diff options
| author | Ulrich Drepper <drepper@redhat.com> | 1999-05-26 23:37:38 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 1999-05-26 23:37:38 +0000 |
| commit | 958f238f3619373d3dbc106d3cda3c467b3419b1 (patch) | |
| tree | 9d15d47658aeaae08ee7e5e5e9d4a63d034caa49 | |
| parent | 475e390e80a950a8746dc0b88341742dc99014e4 (diff) | |
| download | glibc-958f238f3619373d3dbc106d3cda3c467b3419b1.tar.gz | |
Update.
1999-05-26 Ulrich Drepper <drepper@cygnus.com>
* config.h.in: Add __LINUX_KERNEL_VERSION.
* configure.in: Recognize --enable-kernel.
* sysdeps/unix/sysv/linux/configure.in: Check for correct kernel
headers if --enable-kernel is given and set __LINUX_KERNEL_VERSION
appropriately.
* sysdeps/unix/sysv/linux/init-first.c: If minimal kernel version is
given perform runtime test.
* sysdeps/unix/sysv/linux/kernel-features.h: New file.
* sysdeps/unix/sysv/linux/getcwd.c: Elide compatibility code if
minimal supported kernel is known to have the feature.
* sysdeps/unix/sysv/linux/poll.c: Likewise.
* sysdeps/unix/sysv/linux/pread.c: Likewise.
* sysdeps/unix/sysv/linux/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/seteuid.c: Likewise.
* sysdeps/unix/sysv/linux/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/sigprocmask.c: Likewise.
* sysdeps/unix/sysv/linux/sigsuspend.c: Likewise.
* sysdeps/unix/sysv/linux/testrtsig.h: Likewise.
* sysdeps/unix/sysv/linux/i386/chown.c: Likewise.
* sysdeps/unix/sysv/linux/i386/pread.c: Likewise.
* sysdeps/unix/sysv/linux/i386/pread64.c: Likewise.
* sysdeps/unix/sysv/linux/i386/pwrite.c: Likewise.
* sysdeps/unix/sysv/linux/i386/pwrite64.c: Likewise.
* sysdeps/unix/sysv/linux/sysctl.c: Add __sysctl alias.
26 files changed, 745 insertions, 263 deletions
@@ -1,3 +1,34 @@ +1999-05-26 Ulrich Drepper <drepper@cygnus.com> + + * config.h.in: Add __LINUX_KERNEL_VERSION. + * configure.in: Recognize --enable-kernel. + * sysdeps/unix/sysv/linux/configure.in: Check for correct kernel + headers if --enable-kernel is given and set __LINUX_KERNEL_VERSION + appropriately. + * sysdeps/unix/sysv/linux/init-first.c: If minimal kernel version is + given perform runtime test. + + * sysdeps/unix/sysv/linux/kernel-features.h: New file. + * sysdeps/unix/sysv/linux/getcwd.c: Elide compatibility code if + minimal supported kernel is known to have the feature. + * sysdeps/unix/sysv/linux/poll.c: Likewise. + * sysdeps/unix/sysv/linux/pread.c: Likewise. + * sysdeps/unix/sysv/linux/pread64.c: Likewise. + * sysdeps/unix/sysv/linux/pwrite.c: Likewise. + * sysdeps/unix/sysv/linux/pwrite64.c: Likewise. + * sysdeps/unix/sysv/linux/seteuid.c: Likewise. + * sysdeps/unix/sysv/linux/sigaction.c: Likewise. + * sysdeps/unix/sysv/linux/sigprocmask.c: Likewise. + * sysdeps/unix/sysv/linux/sigsuspend.c: Likewise. + * sysdeps/unix/sysv/linux/testrtsig.h: Likewise. + * sysdeps/unix/sysv/linux/i386/chown.c: Likewise. + * sysdeps/unix/sysv/linux/i386/pread.c: Likewise. + * sysdeps/unix/sysv/linux/i386/pread64.c: Likewise. + * sysdeps/unix/sysv/linux/i386/pwrite.c: Likewise. + * sysdeps/unix/sysv/linux/i386/pwrite64.c: Likewise. + + * sysdeps/unix/sysv/linux/sysctl.c: Add __sysctl alias. + 1999-05-25 Ulrich Drepper <drepper@cygnus.com> * sysdeps/posix/getcwd.c (__getcwd): Fix potential memory leaks. diff --git a/config.h.in b/config.h.in index dc1d5bc846..05826b6f6f 100644 --- a/config.h.in +++ b/config.h.in @@ -77,6 +77,9 @@ # define internal_function __attribute__ ((regparm (3), stdcall)) #endif +/* Linux specific: minimum supported kernel version. */ +#undef __LINUX_KERNEL_VERSION + /* */ @@ -12,7 +12,7 @@ # Guess values for system-dependent variables and create Makefiles. -# Generated automatically using autoconf version 2.13 +# Generated automatically using autoconf version 2.14.1 # Copyright (C) 1992, 93, 94, 95, 96 Free Software Foundation, Inc. # # This configure script is free software; the Free Software Foundation @@ -63,6 +63,9 @@ ac_help="$ac_help ac_help="$ac_help --disable-force-install don't force installation of files from this package, even if they are older than the installed files" +ac_help="$ac_help + --enable-kernel=VERSION compile for copmatibility with kernel not older + than VERSION" # Initialize some variables set by options. # The variables have the same names as the options, with @@ -385,7 +388,7 @@ EOF verbose=yes ;; -version | --version | --versio | --versi | --vers) - echo "configure generated by autoconf version 2.13" + echo "configure generated by autoconf version 2.14.1" exit 0 ;; -with-* | --with-*) @@ -545,7 +548,7 @@ done if test -r "$cache_file"; then echo "loading cache $cache_file" - . $cache_file + test -f "$cache_file" && . $cache_file else echo "creating cache $cache_file" > $cache_file @@ -597,9 +600,9 @@ done if test -z "$ac_aux_dir"; then { echo "configure: error: can not find install-sh or install.sh in scripts $srcdir/scripts" 1>&2; exit 1; } fi -ac_config_guess=$ac_aux_dir/config.guess -ac_config_sub=$ac_aux_dir/config.sub -ac_configure=$ac_aux_dir/configure # This should be Cygnus configure. +ac_config_guess="$SHELL $ac_aux_dir/config.guess" +ac_config_sub="$SHELL $ac_aux_dir/config.sub" +ac_configure="$SHELL $ac_aux_dir/configure" # This should be Cygnus configure. # This will get text that should go into config.make. @@ -793,32 +796,53 @@ fi - -# Make sure we can run config.sub. -if ${CONFIG_SHELL-/bin/sh} $ac_config_sub sun4 >/dev/null 2>&1; then : -else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } +# Check whether --enable-kernel or --disable-kernel was given. +if test "${enable_kernel+set}" = set; then + enableval="$enable_kernel" + minimum_kernel=$enableval fi + + echo $ac_n "checking host system type""... $ac_c" 1>&6 -echo "configure:804: checking host system type" >&5 +echo "configure:809: checking host system type" >&5 +if test "x$ac_cv_host" = "x" || (test "x$host" != "xNONE" && test "x$host" != "x$ac_cv_host_alias"); then + +# Make sure we can run config.sub. + if $ac_config_sub sun4 >/dev/null 2>&1; then : + else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } + fi -host_alias=$host -case "$host_alias" in -NONE) - case $nonopt in + ac_cv_host_alias=$host + case "$ac_cv_host_alias" in NONE) - if host_alias=`${CONFIG_SHELL-/bin/sh} $ac_config_guess`; then : - else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; } - fi ;; - *) host_alias=$nonopt ;; - esac ;; -esac + case $nonopt in + NONE) + if ac_cv_host_alias=`$ac_config_guess`; then : + else { echo "configure: error: can not guess host type; you must specify one" 1>&2; exit 1; } + fi ;; + *) ac_cv_host_alias=$nonopt ;; + esac ;; + esac + + ac_cv_host=`$ac_config_sub $ac_cv_host_alias` + ac_cv_host_cpu=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` + ac_cv_host_vendor=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` + ac_cv_host_os=`echo $ac_cv_host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` +else + echo $ac_n "(cached) $ac_c" 1>&6 +fi + +echo "$ac_t""$ac_cv_host" 1>&6 + +host=$ac_cv_host +host_alias=$ac_cv_host_alias +host_cpu=$ac_cv_host_cpu +host_vendor=$ac_cv_host_vendor +host_os=$ac_cv_host_os + + -host=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $host_alias` -host_cpu=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` -host_vendor=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` -host_os=`echo $host | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` -echo "$ac_t""$host" 1>&6 # The way shlib-versions is used to generate soversions.mk uses a @@ -925,7 +949,7 @@ fi # This can take a while to compute. sysdep_dir=$srcdir/sysdeps echo $ac_n "checking sysdep dirs""... $ac_c" 1>&6 -echo "configure:929: checking sysdep dirs" >&5 +echo "configure:953: checking sysdep dirs" >&5 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1. os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`" @@ -1127,9 +1151,9 @@ echo "$ac_t""$default_sysnames" 1>&6 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff" # ./install, which can be erroneously created by make from ./install.sh. echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6 -echo "configure:1131: checking for a BSD compatible install" >&5 +echo "configure:1155: checking for a BSD compatible install" >&5 if test -z "$INSTALL"; then -if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then +if eval "test \"\${ac_cv_path_install+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS=":" @@ -1147,6 +1171,10 @@ else grep dspmsg $ac_dir/$ac_prog >/dev/null 2>&1; then # AIX install. It has an incompatible calling convention. : + elif test $ac_prog = install && + grep pwplus $ac_dir/$ac_prog >/dev/null 2>&1; then + # program-specific install script used by HP pwplus--don't use. + : else ac_cv_path_install="$ac_dir/$ac_prog -c" break 2 @@ -1175,7 +1203,7 @@ echo "$ac_t""$INSTALL" 1>&6 # It thinks the first close brace ends the variable substitution. test -z "$INSTALL_PROGRAM" && INSTALL_PROGRAM='${INSTALL}' -test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL_PROGRAM}' +test -z "$INSTALL_SCRIPT" && INSTALL_SCRIPT='${INSTALL}' test -z "$INSTALL_DATA" && INSTALL_DATA='${INSTALL} -m 644' @@ -1184,8 +1212,8 @@ if test "$INSTALL" = "${srcdir}/install-sh -c"; then INSTALL='\$(..)./install-sh -c' fi echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6 -echo "configure:1188: checking whether ln -s works" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then +echo "configure:1216: checking whether ln -s works" >&5 +if eval "test \"\${ac_cv_prog_LN_S+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else rm -f conftestdata @@ -1206,23 +1234,45 @@ fi # These programs are version sensitive. + echo $ac_n "checking build system type""... $ac_c" 1>&6 -echo "configure:1211: checking build system type" >&5 - -build_alias=$build -case "$build_alias" in -NONE) - case $nonopt in - NONE) build_alias=$host_alias ;; - *) build_alias=$nonopt ;; - esac ;; -esac +echo "configure:1240: checking build system type" >&5 +if test "x$ac_cv_build" = "x" || (test "x$build" != "xNONE" && test "x$build" != "x$ac_cv_build_alias"); then + +# Make sure we can run config.sub. + if $ac_config_sub sun4 >/dev/null 2>&1; then : + else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } + fi + + ac_cv_build_alias=$build + case "$ac_cv_build_alias" in + NONE) + case $nonopt in + NONE) + ac_cv_build_alias=$host_alias ;; + + *) ac_cv_build_alias=$nonopt ;; + esac ;; + esac + + ac_cv_build=`$ac_config_sub $ac_cv_build_alias` + ac_cv_build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` + ac_cv_build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` + ac_cv_build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` +else + echo $ac_n "(cached) $ac_c" 1>&6 +fi + +echo "$ac_t""$ac_cv_build" 1>&6 + +build=$ac_cv_build +build_alias=$ac_cv_build_alias +build_cpu=$ac_cv_build_cpu +build_vendor=$ac_cv_build_vendor +build_os=$ac_cv_build_os + + -build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias` -build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` -build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` -build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` -echo "$ac_t""$build" 1>&6 if test $host != $build; then ac_tool_prefix=${host_alias}- @@ -1235,8 +1285,8 @@ do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1239: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then +echo "configure:1289: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_CC+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$CC"; then @@ -1269,7 +1319,7 @@ if test -z "$CC"; then else # Found it, now check the version. echo $ac_n "checking version of $CC""... $ac_c" 1>&6 -echo "configure:1273: checking version of $CC" >&5 +echo "configure:1323: checking version of $CC" >&5 ac_prog_version=`$CC -v 2>&1 | sed -n 's/^.*version \([egcygnustp-]*[0-9.]*\).*$/\1/p'` case $ac_prog_version in '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; @@ -1289,8 +1339,8 @@ do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1293: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_MAKE'+set}'`\" = set"; then +echo "configure:1343: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_MAKE+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$MAKE"; then @@ -1323,7 +1373,7 @@ if test -z "$MAKE"; then else # Found it, now check the version. echo $ac_n "checking version of $MAKE""... $ac_c" 1>&6 -echo "configure:1327: checking version of $MAKE" >&5 +echo "configure:1377: checking version of $MAKE" >&5 ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*version \([0-9][0-9.]*\), by.*$/\1/p'` case $ac_prog_version in '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; @@ -1344,8 +1394,8 @@ do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1348: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_MSGFMT'+set}'`\" = set"; then +echo "configure:1398: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_MSGFMT+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$MSGFMT"; then @@ -1378,7 +1428,7 @@ if test -z "$MSGFMT"; then else # Found it, now check the version. echo $ac_n "checking version of $MSGFMT""... $ac_c" 1>&6 -echo "configure:1382: checking version of $MSGFMT" >&5 +echo "configure:1432: checking version of $MSGFMT" >&5 ac_prog_version=`$MSGFMT --version 2>&1 | sed -n 's/^.*GNU gettext.* \([0-9]*\.[0-9.]*\).*$/\1/p'` case $ac_prog_version in '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; @@ -1398,8 +1448,8 @@ do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1402: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_MAKEINFO'+set}'`\" = set"; then +echo "configure:1452: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_MAKEINFO+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$MAKEINFO"; then @@ -1432,7 +1482,7 @@ if test -z "$MAKEINFO"; then else # Found it, now check the version. echo $ac_n "checking version of $MAKEINFO""... $ac_c" 1>&6 -echo "configure:1436: checking version of $MAKEINFO" >&5 +echo "configure:1486: checking version of $MAKEINFO" >&5 ac_prog_version=`$MAKEINFO --version 2>&1 | sed -n 's/^.*GNU texinfo.* \([0-9][0-9.]*\).*$/\1/p'` case $ac_prog_version in '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;; @@ -1461,8 +1511,8 @@ test -n "$aux_missing" && echo "configure: warning: echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6 -echo "configure:1465: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_cc_works'+set}'`\" = set"; then +echo "configure:1515: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5 +if eval "test \"\${ac_cv_prog_cc_works+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else @@ -1475,12 +1525,12 @@ cross_compiling=$ac_cv_prog_cc_cross cat > conftest.$ac_ext << EOF -#line 1479 "configure" +#line 1529 "configure" #include "confdefs.h" main(){return(0);} EOF -if { (eval echo configure:1484: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then +if { (eval echo configure:1534: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then ac_cv_prog_cc_works=yes # If we can't run a trivial program, we are probably using a cross compiler. if (./conftest; exit) 2>/dev/null; then @@ -1511,8 +1561,8 @@ else cross_linkable=yes fi echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6 -echo "configure:1515: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_cc_cross'+set}'`\" = set"; then +echo "configure:1565: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5 +if eval "test \"\${ac_cv_prog_cc_cross+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else : @@ -1523,8 +1573,8 @@ echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6 cross_compiling=$ac_cv_prog_cc_cross echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6 -echo "configure:1527: checking whether we are using GNU C" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then +echo "configure:1577: checking whether we are using GNU C" >&5 +if eval "test \"\${ac_cv_prog_gcc+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<EOF @@ -1532,7 +1582,7 @@ else yes; #endif EOF -if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1536: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then +if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1586: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then ac_cv_prog_gcc=yes else ac_cv_prog_gcc=no @@ -1544,23 +1594,45 @@ if test $ac_cv_prog_gcc != yes; then { echo "configure: error: GNU libc must be compiled using GNU CC" 1>&2; exit 1; } fi + echo $ac_n "checking build system type""... $ac_c" 1>&6 -echo "configure:1549: checking build system type" >&5 - -build_alias=$build -case "$build_alias" in -NONE) - case $nonopt in - NONE) build_alias=$host_alias ;; - *) build_alias=$nonopt ;; - esac ;; -esac +echo "configure:1600: checking build system type" >&5 +if test "x$ac_cv_build" = "x" || (test "x$build" != "xNONE" && test "x$build" != "x$ac_cv_build_alias"); then + +# Make sure we can run config.sub. + if $ac_config_sub sun4 >/dev/null 2>&1; then : + else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; } + fi + + ac_cv_build_alias=$build + case "$ac_cv_build_alias" in + NONE) + case $nonopt in + NONE) + ac_cv_build_alias=$host_alias ;; + + *) ac_cv_build_alias=$nonopt ;; + esac ;; + esac + + ac_cv_build=`$ac_config_sub $ac_cv_build_alias` + ac_cv_build_cpu=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` + ac_cv_build_vendor=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` + ac_cv_build_os=`echo $ac_cv_build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` +else + echo $ac_n "(cached) $ac_c" 1>&6 +fi + +echo "$ac_t""$ac_cv_build" 1>&6 + +build=$ac_cv_build +build_alias=$ac_cv_build_alias +build_cpu=$ac_cv_build_cpu +build_vendor=$ac_cv_build_vendor +build_os=$ac_cv_build_os + + -build=`${CONFIG_SHELL-/bin/sh} $ac_config_sub $build_alias` -build_cpu=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\1/'` -build_vendor=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\2/'` -build_os=`echo $build | sed 's/^\([^-]*\)-\([^-]*\)-\(.*\)$/\3/'` -echo "$ac_t""$build" 1>&6 if test $host != $build; then for ac_prog in gcc cc @@ -1568,8 +1640,8 @@ do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1572: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_BUILD_CC'+set}'`\" = set"; then +echo "configure:1644: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_BUILD_CC+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$BUILD_CC"; then @@ -1600,13 +1672,13 @@ done fi echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6 -echo "configure:1604: checking how to run the C preprocessor" >&5 +echo "configure:1676: checking how to run the C preprocessor" >&5 # On Suns, sometimes $CPP names a directory. if test -n "$CPP" && test -d "$CPP"; then CPP= fi if test -z "$CPP"; then -if eval "test \"`echo '$''{'ac_cv_prog_CPP'+set}'`\" = set"; then +if eval "test \"\${ac_cv_prog_CPP+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else # This must be in double quotes, not single quotes, because CPP may get @@ -1615,13 +1687,13 @@ else # On the NeXT, cc -E runs the code through the compiler's parser, # not just through cpp. cat > conftest.$ac_ext <<EOF -#line 1619 "configure" +#line 1691 "configure" #include "confdefs.h" #include <assert.h> Syntax Error EOF ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out" -{ (eval echo configure:1625: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } +{ (eval echo configure:1697: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"` if test -z "$ac_err"; then : @@ -1632,13 +1704,13 @@ else rm -rf conftest* CPP="${CC-cc} -E -traditional-cpp" cat > conftest.$ac_ext <<EOF -#line 1636 "configure" +#line 1708 "configure" #include "confdefs.h" #include <assert.h> Syntax Error EOF ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out" -{ (eval echo configure:1642: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } +{ (eval echo configure:1714: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"` if test -z "$ac_err"; then : @@ -1649,13 +1721,13 @@ else rm -rf conftest* CPP="${CC-cc} -nologo -E" cat > conftest.$ac_ext <<EOF -#line 1653 "configure" +#line 1725 "configure" #include "confdefs.h" #include <assert.h> Syntax Error EOF ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out" -{ (eval echo configure:1659: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } +{ (eval echo configure:1731: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; } ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"` if test -z "$ac_err"; then : @@ -1698,8 +1770,8 @@ if test $RANLIB = ranlib; then # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args. set dummy ${ac_tool_prefix}ranlib; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1702: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then +echo "configure:1774: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_RANLIB+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$RANLIB"; then @@ -1730,8 +1802,8 @@ if test -n "$ac_tool_prefix"; then # Extract the first word of "ranlib", so it can be a program name with args. set dummy ranlib; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1734: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then +echo "configure:1806: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_RANLIB+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$RANLIB"; then @@ -1767,8 +1839,8 @@ fi # Determine whether we are using GNU binutils. echo $ac_n "checking whether $AS is GNU as""... $ac_c" 1>&6 -echo "configure:1771: checking whether $AS is GNU as" >&5 -if eval "test \"`echo '$''{'libc_cv_prog_as_gnu'+set}'`\" = set"; then +echo "configure:1843: checking whether $AS is GNU as" >&5 +if eval "test \"\${libc_cv_prog_as_gnu+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else # Most GNU programs take a -v and spit out some text including @@ -1786,8 +1858,8 @@ rm -f a.out gnu_as=$libc_cv_prog_as_gnu echo $ac_n "checking whether $LD is GNU ld""... $ac_c" 1>&6 -echo "configure:1790: checking whether $LD is GNU ld" >&5 -if eval "test \"`echo '$''{'libc_cv_prog_ld_gnu'+set}'`\" = set"; then +echo "configure:1862: checking whether $LD is GNU ld" >&5 +if eval "test \"\${libc_cv_prog_ld_gnu+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else # Most GNU programs take a -v and spit out some text including @@ -1806,8 +1878,8 @@ gnu_ld=$libc_cv_prog_ld_gnu # Extract the first word of "${ac_tool_prefix}mig", so it can be a program name with args. set dummy ${ac_tool_prefix}mig; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1810: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_MIG'+set}'`\" = set"; then +echo "configure:1882: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_MIG+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$MIG"; then @@ -1847,8 +1919,8 @@ fi # check if ranlib is necessary echo $ac_n "checking whether ranlib is necessary""... $ac_c" 1>&6 -echo "configure:1851: checking whether ranlib is necessary" >&5 -if eval "test \"`echo '$''{'libc_cv_ranlib_necessary'+set}'`\" = set"; then +echo "configure:1923: checking whether ranlib is necessary" >&5 +if eval "test \"\${libc_cv_ranlib_necessary+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<EOF @@ -1881,7 +1953,7 @@ fi # - two terminals occur directly after each other # - the path contains an element with a dot in it echo $ac_n "checking LD_LIBRARY_PATH variable""... $ac_c" 1>&6 -echo "configure:1885: checking LD_LIBRARY_PATH variable" >&5 +echo "configure:1957: checking LD_LIBRARY_PATH variable" >&5 case ${LD_LIBRARY_PATH} in [:\;]* | *[:\;] | *[:\;][:\;]* | *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* ) ld_library_path_setting="contains current directory" @@ -1901,8 +1973,8 @@ fi # Extract the first word of "bash", so it can be a program name with args. set dummy bash; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1905: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_path_BASH'+set}'`\" = set"; then +echo "configure:1977: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_path_BASH+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else case "$BASH" in @@ -1947,8 +2019,8 @@ if test "$BASH" = no; then # Extract the first word of "ksh", so it can be a program name with args. set dummy ksh; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:1951: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_path_KSH'+set}'`\" = set"; then +echo "configure:2023: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_path_KSH+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else case "$KSH" in @@ -1997,8 +2069,8 @@ do # Extract the first word of "$ac_prog", so it can be a program name with args. set dummy $ac_prog; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:2001: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_prog_AWK'+set}'`\" = set"; then +echo "configure:2073: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_prog_AWK+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test -n "$AWK"; then @@ -2029,8 +2101,8 @@ done # Extract the first word of "perl", so it can be a program name with args. set dummy perl; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:2033: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_path_PERL'+set}'`\" = set"; then +echo "configure:2105: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_path_PERL+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else case "$PERL" in @@ -2066,8 +2138,8 @@ fi # Extract the first word of "install-info", so it can be a program name with args. set dummy install-info; ac_word=$2 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6 -echo "configure:2070: checking for $ac_word" >&5 -if eval "test \"`echo '$''{'ac_cv_path_INSTALL_INFO'+set}'`\" = set"; then +echo "configure:2142: checking for $ac_word" >&5 +if eval "test \"\${ac_cv_path_INSTALL_INFO+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else case "$INSTALL_INFO" in @@ -2102,8 +2174,8 @@ fi if test "$INSTALL_INFO" != "no"; then echo $ac_n "checking for old Debian install-info""... $ac_c" 1>&6 -echo "configure:2106: checking for old Debian install-info" >&5 -if eval "test \"`echo '$''{'libc_cv_old_debian_install_info'+set}'`\" = set"; then +echo "configure:2178: checking for old Debian install-info" >&5 +if eval "test \"\${libc_cv_old_debian_install_info+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else mkdir conftest.d @@ -2135,8 +2207,8 @@ fi echo $ac_n "checking for signed size_t type""... $ac_c" 1>&6 -echo "configure:2139: checking for signed size_t type" >&5 -if eval "test \"`echo '$''{'libc_cv_signed_size_t'+set}'`\" = set"; then +echo "configure:2211: checking for signed size_t type" >&5 +if eval "test \"\${libc_cv_signed_size_t+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else echo '#include <stddef.h> @@ -2159,12 +2231,12 @@ EOF fi echo $ac_n "checking for libc-friendly stddef.h""... $ac_c" 1>&6 -echo "configure:2163: checking for libc-friendly stddef.h" >&5 -if eval "test \"`echo '$''{'libc_cv_friendly_stddef'+set}'`\" = set"; then +echo "configure:2235: checking for libc-friendly stddef.h" >&5 +if eval "test \"\${libc_cv_friendly_stddef+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <<EOF -#line 2168 "configure" +#line 2240 "configure" #include "confdefs.h" #define __need_size_t #define __need_wchar_t @@ -2179,7 +2251,7 @@ size_t size; wchar_t wchar; if (&size == NULL || &wchar == NULL) abort (); ; return 0; } EOF -if { (eval echo configure:2183: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then +if { (eval echo configure:2255: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* libc_cv_friendly_stddef=yes else @@ -2198,8 +2270,8 @@ override stddef.h = # The installed <stddef.h> seems to be libc-friendly." fi echo $ac_n "checking whether we need to use -P to assemble .S files""... $ac_c" 1>&6 -echo "configure:2202: checking whether we need to use -P to assemble .S files" >&5 -if eval "test \"`echo '$''{'libc_cv_need_minus_P'+set}'`\" = set"; then +echo "configure:2274: checking whether we need to use -P to assemble .S files" >&5 +if eval "test \"\${libc_cv_need_minus_P+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.S <<EOF @@ -2221,8 +2293,8 @@ asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives." fi echo $ac_n "checking for assembler global-symbol directive""... $ac_c" 1>&6 -echo "configure:2225: checking for assembler global-symbol directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_global_directive'+set}'`\" = set"; then +echo "configure:2297: checking for assembler global-symbol directive" >&5 +if eval "test \"\${libc_cv_asm_global_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else libc_cv_asm_global_directive=UNKNOWN @@ -2251,8 +2323,8 @@ EOF fi echo $ac_n "checking for .set assembler directive""... $ac_c" 1>&6 -echo "configure:2255: checking for .set assembler directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_set_directive'+set}'`\" = set"; then +echo "configure:2327: checking for .set assembler directive" >&5 +if eval "test \"\${libc_cv_asm_set_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.s <<EOF @@ -2285,8 +2357,8 @@ EOF fi echo $ac_n "checking for .symver assembler directive""... $ac_c" 1>&6 -echo "configure:2289: checking for .symver assembler directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_symver_directive'+set}'`\" = set"; then +echo "configure:2361: checking for .symver assembler directive" >&5 +if eval "test \"\${libc_cv_asm_symver_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.s <<EOF @@ -2304,8 +2376,8 @@ fi echo "$ac_t""$libc_cv_asm_symver_directive" 1>&6 echo $ac_n "checking for ld --version-script""... $ac_c" 1>&6 -echo "configure:2308: checking for ld --version-script" >&5 -if eval "test \"`echo '$''{'libc_cv_ld_version_script_option'+set}'`\" = set"; then +echo "configure:2380: checking for ld --version-script" >&5 +if eval "test \"\${libc_cv_ld_version_script_option+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else if test $libc_cv_asm_symver_directive = yes; then @@ -2327,7 +2399,7 @@ EOF if { ac_try='${CC-cc} $CFLAGS -shared -o conftest.so conftest.o -nostartfiles -nostdlib -Wl,--version-script,conftest.map - 1>&5'; { (eval echo configure:2331: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; + 1>&5'; { (eval echo configure:2403: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_ld_version_script_option=yes else @@ -2365,15 +2437,15 @@ if test $VERSIONING = no; then fi if test $elf = yes; then echo $ac_n "checking for .previous assembler directive""... $ac_c" 1>&6 -echo "configure:2369: checking for .previous assembler directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_previous_directive'+set}'`\" = set"; then +echo "configure:2441: checking for .previous assembler directive" >&5 +if eval "test \"\${libc_cv_asm_previous_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.s <<EOF .section foo_section .previous EOF - if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2377: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2449: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_asm_previous_directive=yes else libc_cv_asm_previous_directive=no @@ -2389,15 +2461,15 @@ EOF else echo $ac_n "checking for .popsection assembler directive""... $ac_c" 1>&6 -echo "configure:2393: checking for .popsection assembler directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_popsection_directive'+set}'`\" = set"; then +echo "configure:2465: checking for .popsection assembler directive" >&5 +if eval "test \"\${libc_cv_asm_popsection_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.s <<EOF .pushsection foo_section .popsection EOF - if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2401: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2473: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_asm_popsection_directive=yes else libc_cv_asm_popsection_directive=no @@ -2417,12 +2489,12 @@ fi if test $elf != yes; then echo $ac_n "checking for .init and .fini sections""... $ac_c" 1>&6 -echo "configure:2421: checking for .init and .fini sections" >&5 -if eval "test \"`echo '$''{'libc_cv_have_initfini'+set}'`\" = set"; then +echo "configure:2493: checking for .init and .fini sections" >&5 +if eval "test \"\${libc_cv_have_initfini+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <<EOF -#line 2426 "configure" +#line 2498 "configure" #include "confdefs.h" int main() { @@ -2431,7 +2503,7 @@ asm (".section .init"); asm (".text"); ; return 0; } EOF -if { (eval echo configure:2435: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then +if { (eval echo configure:2507: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* libc_cv_have_initfini=yes else @@ -2459,19 +2531,19 @@ if test $elf = yes; then else if test $ac_cv_prog_cc_works = yes; then echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6 -echo "configure:2463: checking for _ prefix on C symbol names" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then +echo "configure:2535: checking for _ prefix on C symbol names" >&5 +if eval "test \"\${libc_cv_asm_underscores+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <<EOF -#line 2468 "configure" +#line 2540 "configure" #include "confdefs.h" asm ("_glibc_foobar:"); int main() { glibc_foobar (); ; return 0; } EOF -if { (eval echo configure:2475: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then +if { (eval echo configure:2547: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then rm -rf conftest* libc_cv_asm_underscores=yes else @@ -2486,17 +2558,17 @@ fi echo "$ac_t""$libc_cv_asm_underscores" 1>&6 else echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6 -echo "configure:2490: checking for _ prefix on C symbol names" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then +echo "configure:2562: checking for _ prefix on C symbol names" >&5 +if eval "test \"\${libc_cv_asm_underscores+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <<EOF -#line 2495 "configure" +#line 2567 "configure" #include "confdefs.h" void underscore_test(void) { return; } EOF -if { (eval echo configure:2500: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then +if { (eval echo configure:2572: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then if grep _underscore_test conftest* >/dev/null; then rm -f conftest* libc_cv_asm_underscores=yes @@ -2528,8 +2600,8 @@ if test $elf = yes; then fi echo $ac_n "checking for assembler .weak directive""... $ac_c" 1>&6 -echo "configure:2532: checking for assembler .weak directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_weak_directive'+set}'`\" = set"; then +echo "configure:2604: checking for assembler .weak directive" >&5 +if eval "test \"\${libc_cv_asm_weak_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.s <<EOF @@ -2551,8 +2623,8 @@ echo "$ac_t""$libc_cv_asm_weak_directive" 1>&6 if test $libc_cv_asm_weak_directive = no; then echo $ac_n "checking for assembler .weakext directive""... $ac_c" 1>&6 -echo "configure:2555: checking for assembler .weakext directive" >&5 -if eval "test \"`echo '$''{'libc_cv_asm_weakext_directive'+set}'`\" = set"; then +echo "configure:2627: checking for assembler .weakext directive" >&5 +if eval "test \"\${libc_cv_asm_weakext_directive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.s <<EOF @@ -2589,8 +2661,8 @@ EOF fi echo $ac_n "checking for ld --no-whole-archive""... $ac_c" 1>&6 -echo "configure:2593: checking for ld --no-whole-archive" >&5 -if eval "test \"`echo '$''{'libc_cv_ld_no_whole_archive'+set}'`\" = set"; then +echo "configure:2665: checking for ld --no-whole-archive" >&5 +if eval "test \"\${libc_cv_ld_no_whole_archive+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<\EOF @@ -2600,7 +2672,7 @@ __throw () {} EOF if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles -Wl,--no-whole-archive - -o conftest conftest.c 1>&5'; { (eval echo configure:2604: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + -o conftest conftest.c 1>&5'; { (eval echo configure:2676: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_ld_no_whole_archive=yes else libc_cv_ld_no_whole_archive=no @@ -2614,8 +2686,8 @@ if test $libc_cv_ld_no_whole_archive = yes; then fi echo $ac_n "checking for gcc -fexceptions""... $ac_c" 1>&6 -echo "configure:2618: checking for gcc -fexceptions" >&5 -if eval "test \"`echo '$''{'libc_cv_gcc_exceptions'+set}'`\" = set"; then +echo "configure:2690: checking for gcc -fexceptions" >&5 +if eval "test \"\${libc_cv_gcc_exceptions+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<\EOF @@ -2625,7 +2697,7 @@ __throw () {} EOF if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles -fexceptions - -o conftest conftest.c 1>&5'; { (eval echo configure:2629: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + -o conftest conftest.c 1>&5'; { (eval echo configure:2701: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_gcc_exceptions=yes else libc_cv_gcc_exceptions=no @@ -2640,14 +2712,14 @@ fi if test "$base_machine" = alpha ; then echo $ac_n "checking for function ..ng prefix""... $ac_c" 1>&6 -echo "configure:2644: checking for function ..ng prefix" >&5 -if eval "test \"`echo '$''{'libc_cv_gcc_alpha_ng_prefix'+set}'`\" = set"; then +echo "configure:2716: checking for function ..ng prefix" >&5 +if eval "test \"\${libc_cv_gcc_alpha_ng_prefix+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<\EOF foo () { } EOF -if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2651: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; +if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2723: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_gcc_alpha_ng_prefix=yes else @@ -2674,19 +2746,19 @@ if test "$host_cpu" = powerpc ; then # Check for a bug present in at least versions 2.8.x of GCC # and versions 1.0.x of EGCS. echo $ac_n "checking whether clobbering cr0 causes problems""... $ac_c" 1>&6 -echo "configure:2678: checking whether clobbering cr0 causes problems" >&5 -if eval "test \"`echo '$''{'libc_cv_c_asmcr0_bug'+set}'`\" = set"; then +echo "configure:2750: checking whether clobbering cr0 causes problems" >&5 +if eval "test \"\${libc_cv_c_asmcr0_bug+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <<EOF -#line 2683 "configure" +#line 2755 "configure" #include "confdefs.h" int tester(int x) { asm ("" : : : "cc"); return x & 123; } int main() { ; return 0; } EOF -if { (eval echo configure:2690: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then +if { (eval echo configure:2762: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then rm -rf conftest* libc_cv_c_asmcr0_bug='no' else @@ -2708,12 +2780,12 @@ fi fi echo $ac_n "checking for DWARF2 unwind info support""... $ac_c" 1>&6 -echo "configure:2712: checking for DWARF2 unwind info support" >&5 -if eval "test \"`echo '$''{'libc_cv_gcc_dwarf2_unwind_info'+set}'`\" = set"; then +echo "configure:2784: checking for DWARF2 unwind info support" >&5 +if eval "test \"\${libc_cv_gcc_dwarf2_unwind_info+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<EOF -#line 2717 "configure" +#line 2789 "configure" static char __EH_FRAME_BEGIN__; _start () { @@ -2740,7 +2812,7 @@ __bzero () {} EOF if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame_info -nostdlib -nostartfiles - -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2744: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2816: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_gcc_dwarf2_unwind_info=static else libc_cv_gcc_dwarf2_unwind_info=no @@ -2748,7 +2820,7 @@ fi if test $libc_cv_gcc_dwarf2_unwind_info = no; then if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame -nostdlib -nostartfiles - -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2752: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2824: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_gcc_dwarf2_unwind_info=yes else libc_cv_gcc_dwarf2_unwind_info=no @@ -2778,12 +2850,12 @@ EOF esac echo $ac_n "checking for __builtin_expect""... $ac_c" 1>&6 -echo "configure:2782: checking for __builtin_expect" >&5 -if eval "test \"`echo '$''{'libc_cv_gcc_builtin_expect'+set}'`\" = set"; then +echo "configure:2854: checking for __builtin_expect" >&5 +if eval "test \"\${libc_cv_gcc_builtin_expect+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.c <<EOF -#line 2787 "configure" +#line 2859 "configure" int foo (int a) { a = __builtin_expect (a, 10); @@ -2791,7 +2863,7 @@ int foo (int a) } EOF if { ac_try='${CC-cc} $CFLAGS -nostdlib -nostartfiles - -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2795: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then + -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2867: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then libc_cv_gcc_builtin_expect=yes else libc_cv_gcc_builtin_expect=no @@ -2852,8 +2924,8 @@ if test "$uname" = "sysdeps/generic"; then fi echo $ac_n "checking OS release for uname""... $ac_c" 1>&6 -echo "configure:2856: checking OS release for uname" >&5 -if eval "test \"`echo '$''{'libc_cv_uname_release'+set}'`\" = set"; then +echo "configure:2928: checking OS release for uname" >&5 +if eval "test \"\${libc_cv_uname_release+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else kernel_release=`echo "$kernel_id" | sed 's/^[^0-9.]*\([0-9.]*\).*$/\1/'` @@ -2874,8 +2946,8 @@ echo "$ac_t""$libc_cv_uname_release" 1>&6 uname_release="$libc_cv_uname_release" echo $ac_n "checking OS version for uname""... $ac_c" 1>&6 -echo "configure:2878: checking OS version for uname" >&5 -if eval "test \"`echo '$''{'libc_cv_uname_version'+set}'`\" = set"; then +echo "configure:2950: checking OS version for uname" >&5 +if eval "test \"\${libc_cv_uname_version+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else kernel_version=`echo "$kernel_id" | sed 's/^[^#]*#\([0-9]*\).*$/\1/'` @@ -2896,7 +2968,7 @@ else fi echo $ac_n "checking stdio selection""... $ac_c" 1>&6 -echo "configure:2900: checking stdio selection" >&5 +echo "configure:2972: checking stdio selection" >&5 case $stdio in libio) cat >> confdefs.h <<\EOF @@ -2910,7 +2982,7 @@ echo "$ac_t""$stdio" 1>&6 # Test for old glibc 2.0.x headers so that they can be removed properly # Search only in includedir. echo $ac_n "checking for old glibc 2.0.x headers""... $ac_c" 1>&6 -echo "configure:2914: checking for old glibc 2.0.x headers" >&5 +echo "configure:2986: checking for old glibc 2.0.x headers" >&5 if eval test -f "${includedir}/elfclass.h" -a -f "${includedir}/fcntlbits.h" then old_glibc_headers=yes @@ -2964,8 +3036,8 @@ if test $shared = default; then fi echo $ac_n "checking whether -fPIC is default""... $ac_c" 1>&6 -echo "configure:2968: checking whether -fPIC is default" >&5 -if eval "test \"`echo '$''{'pic_default'+set}'`\" = set"; then +echo "configure:3040: checking whether -fPIC is default" >&5 +if eval "test \"\${pic_default+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else pic_default=yes @@ -3098,7 +3170,7 @@ do echo "running \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion" exec \${CONFIG_SHELL-/bin/sh} $0 $ac_configure_args --no-create --no-recursion ;; -version | --version | --versio | --versi | --vers | --ver | --ve | --v) - echo "$CONFIG_STATUS generated by autoconf version 2.13" + echo "$CONFIG_STATUS generated by autoconf version 2.14.1" exit 0 ;; -help | --help | --hel | --he | --h) echo "\$ac_cs_usage"; exit 0 ;; @@ -3475,7 +3547,7 @@ exit 0 EOF chmod +x $CONFIG_STATUS rm -fr confdefs* $ac_clean_files -test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1 +test "$no_create" = yes || $SHELL $CONFIG_STATUS || exit 1 if test "$no_recursion" != yes; then @@ -3539,7 +3611,7 @@ if test "$no_recursion" != yes; then # Check for guested configure; otherwise get Cygnus style configure. if test -f $ac_sub_srcdir/configure; then - ac_sub_configure=$ac_sub_srcdir/configure + ac_sub_configure="$SHELL $ac_sub_srcdir/configure" elif test -f $ac_sub_srcdir/configure.in; then ac_sub_configure=$ac_configure else @@ -3561,9 +3633,9 @@ if test "$no_recursion" != yes; then *) INSTALL="$ac_dots$ac_given_INSTALL" ;; esac - echo "running ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir" + echo "running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir" # The eval makes quoting arguments work. - if eval ${CONFIG_SHELL-/bin/sh} $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir + if eval $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_sub_srcdir then : else { echo "configure: error: $ac_sub_configure failed for $ac_config_dir" 1>&2; exit 1; } diff --git a/configure.in b/configure.in index ffc68f1f83..179b1adfa6 100644 --- a/configure.in +++ b/configure.in @@ -133,6 +133,13 @@ AC_ARG_ENABLE(force-install, force_install=$enableval, force_install=yes) AC_SUBST(force_install) +dnl On some platforms we allow dropping compatibility with all kernel +dnl versions. +AC_ARG_ENABLE(kernel, +[ --enable-kernel=VERSION compile for copmatibility with kernel not older + than VERSION], + minimum_kernel=$enableval) + AC_CANONICAL_HOST # The way shlib-versions is used to generate soversions.mk uses a diff --git a/sysdeps/unix/sysv/linux/configure b/sysdeps/unix/sysv/linux/configure index bf5e797d31..f5d994b1c7 100644 --- a/sysdeps/unix/sysv/linux/configure +++ b/sysdeps/unix/sysv/linux/configure @@ -13,7 +13,7 @@ if test -n "$sysheaders"; then fi echo $ac_n "checking installed Linux kernel header files""... $ac_c" 1>&6 echo "configure:16: checking installed Linux kernel header files" >&5 -if eval "test \"`echo '$''{'libc_cv_linux2010'+set}'`\" = set"; then +if eval "test \"\${libc_cv_linux2010+set}\" = set"; then echo $ac_n "(cached) $ac_c" 1>&6 else cat > conftest.$ac_ext <<EOF @@ -49,6 +49,35 @@ make sure that file was built correctly when installing the kernel header files. To use kernel headers not from /usr/include/linux, use the configure option --with-headers." 1>&2; exit 1; } fi + +# If the user gave a minimal version number test whether the available +# kernel headers are young enough. +if test -n "$minimum_kernel"; then + echo $ac_n "checking for kernel header at least $minimum_kernel""... $ac_c" 1>&6 +echo "configure:58: checking for kernel header at least $minimum_kernel" >&5 + decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\(\([0-9]*\)\|\).*/(\1 * 65536 + \2 * 256 + \3)/'`; + cat > conftest.$ac_ext <<EOF +#include <linux/version.h> +int main() { +#if LINUX_VERSION_CODE < $decnum +eat flaming death +#endif +; return 0; } +EOF + if { (eval echo configure:30: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + cat >> confdefs.h <<EOF +#define __LINUX_KERNEL_VERSION $decnum +EOF + + echo "$ac_t""ok" 1>&6 + else + echo "$ac_t""too old!" 1>&6 + { echo "configure: error: *** The available kernel headers are not at least as old as the requested +*** compatible kernel version" 1>&2; exit 1; } + fi + rm -f conftest* +fi + if test -n "$sysheaders"; then CFLAGS=$OLD_CFLAGS fi @@ -135,7 +164,7 @@ if test $host = $build; then ac_prefix=$ac_default_prefix fi echo $ac_n "checking for symlinks in ${ac_prefix}/include""... $ac_c" 1>&6 -echo "configure:131: checking for symlinks in ${ac_prefix}/include" >&5 +echo "configure:168: checking for symlinks in ${ac_prefix}/include" >&5 ac_message= if test -L ${ac_prefix}/include/net; then ac_message="$ac_message diff --git a/sysdeps/unix/sysv/linux/configure.in b/sysdeps/unix/sysv/linux/configure.in index 2c425c5f25..021b4731eb 100644 --- a/sysdeps/unix/sysv/linux/configure.in +++ b/sysdeps/unix/sysv/linux/configure.in @@ -34,6 +34,33 @@ make sure that file was built correctly when installing the kernel header files. To use kernel headers not from /usr/include/linux, use the configure option --with-headers.]) fi + +# If the user gave a minimal version number test whether the available +# kernel headers are young enough. +if test -n "$minimum_kernel"; then + AC_MSG_CHECKING(for kernel header at least $minimum_kernel) +changequote(,)dnl + decnum=`echo "$minimum_kernel.0.0.0" | sed 's/\([0-9]*\)\.\([0-9]*\)\.\(\([0-9]*\)\|\).*/(\1 * 65536 + \2 * 256 + \3)/'`; +changequote([,])dnl + cat > conftest.$ac_ext <<EOF +#include <linux/version.h> +int main() { +#if LINUX_VERSION_CODE < $decnum +eat flaming death +#endif +; return 0; } +EOF + if { (eval echo configure:30: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then + AC_DEFINE_UNQUOTED(__LINUX_KERNEL_VERSION, $decnum) + AC_MSG_RESULT(ok) + else + AC_MSG_RESULT(too old!) + AC_MSG_ERROR([*** The available kernel headers are not at least as old as the requested +*** compatible kernel version]) + fi + rm -f conftest* +fi + if test -n "$sysheaders"; then CFLAGS=$OLD_CFLAGS fi diff --git a/sysdeps/unix/sysv/linux/getcwd.c b/sysdeps/unix/sysv/linux/getcwd.c index fe28e2d894..cc7b987f9b 100644 --- a/sysdeps/unix/sysv/linux/getcwd.c +++ b/sysdeps/unix/sysv/linux/getcwd.c @@ -18,6 +18,7 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <assert.h> #include <errno.h> #include <limits.h> #include <stdlib.h> @@ -26,7 +27,19 @@ #include <sysdep.h> #include <sys/syscall.h> +#include "kernel-features.h" + +#if __ASSUME_GETCWD_SYSCALL > 0 +/* Kernel 2.1.92 introduced a third way to get the current working + directory: a syscall. We've got to be careful that even when + compiling under 2.1.92+ the libc still runs under older kernels. */ +extern int __syscall_getcwd (char *buf, unsigned long size); +# define no_syscall_getcwd 0 +# define have_new_dcache 1 +/* This is a trick since we don't define generic_getcwd. */ +# define generic_getcwd getcwd +#else /* The "proc" filesystem provides an easy method to retrieve the value. For each process, the corresponding directory contains a symbolic link named `cwd'. Reading the content of this link immediate gives us the @@ -34,16 +47,17 @@ the proc filesystem mounted. Use the POSIX implementation in this case. */ static char *generic_getcwd (char *buf, size_t size) internal_function; -#ifdef __NR_getcwd +# if __NR_getcwd /* Kernel 2.1.92 introduced a third way to get the current working directory: a syscall. We've got to be careful that even when compiling under 2.1.92+ the libc still runs under older kernels. */ extern int __syscall_getcwd (char *buf, unsigned long size); static int no_syscall_getcwd; static int have_new_dcache; -#else -# define no_syscall_getcwd 1 +# else +# define no_syscall_getcwd 1 static int have_new_dcache = 1; +# endif #endif char * @@ -80,7 +94,7 @@ __getcwd (char *buf, size_t size) save_errno = errno; -#ifdef __NR_getcwd +#if defined __NR_getcwd || __LINUX_GETCWD_SYSCALL > 0 if (!no_syscall_getcwd) { int retval; @@ -98,6 +112,16 @@ __getcwd (char *buf, size_t size) return buf; } +# if __ASSUME_GETCWD_SYSCALL + /* It should never happen that the `getcwd' syscall failed because + the buffer is too small if we allocated the buffer outself. */ + assert (errno != ERANGE || buf != NULL); + + if (buf == NULL) + free (path); + + return NULL; +# else if (errno == ENOSYS) { no_syscall_getcwd = 1; @@ -111,6 +135,7 @@ __getcwd (char *buf, size_t size) } __set_errno (save_errno); +# endif } #endif @@ -136,14 +161,18 @@ __getcwd (char *buf, size_t size) } return buf; } +#ifndef have_new_dcache else have_new_dcache = 0; +#endif } +#if __ASSUME_GETCWD_SYSCALL == 0 /* Set to have_new_dcache only if error indicates that proc doesn't exist. */ if (errno != EACCES && errno != ENAMETOOLONG) have_new_dcache = 0; +#endif /* Something went wrong. Restore the error number and use the generic version. */ @@ -165,7 +194,9 @@ __getcwd (char *buf, size_t size) } weak_alias (__getcwd, getcwd) +#if __ASSUME_GETCWD_SYSCALL == 0 /* Get the code for the generic version. */ -#define GETCWD_RETURN_TYPE static char * internal_function -#define __getcwd generic_getcwd -#include <sysdeps/posix/getcwd.c> +# define GETCWD_RETURN_TYPE static char * internal_function +# define __getcwd generic_getcwd +# include <sysdeps/posix/getcwd.c> +#endif diff --git a/sysdeps/unix/sysv/linux/i386/chown.c b/sysdeps/unix/sysv/linux/i386/chown.c index 3776a4490c..9ab03e3a7c 100644 --- a/sysdeps/unix/sysv/linux/i386/chown.c +++ b/sysdeps/unix/sysv/linux/i386/chown.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -22,6 +22,8 @@ #include <sysdep.h> #include <sys/syscall.h> +#include <kernel-features.h> + /* In Linux 2.1.x the chown functions have been changed. A new function lchown was introduced. The new chown now follows symlinks - the old chown and the @@ -34,14 +36,15 @@ extern int __syscall_chown (const char *__file, uid_t __owner, gid_t __group); -#ifdef __NR_lchown +#if defined __NR_lchown || __ASSUME_LCHOWN_SYSCALL > 0 /* Running under Linux > 2.1.80. */ -static int __libc_old_chown; int __real_chown (const char *file, uid_t owner, gid_t group) { +# if __ASSUME_LCHOWN_SYSCALL == 0 + static int __libc_old_chown; int result; if (!__libc_old_chown) @@ -57,11 +60,14 @@ __real_chown (const char *file, uid_t owner, gid_t group) } return __lchown (file, owner, group); +# else + return INLINE_SYSCALL (chown, 3, file, owner, group); +# endif } #endif -#ifndef __NR_lchown +#if !defined __NR_lchown && __ASSUME_LCHOWN_SYSCALL == 0 /* Compiling under older kernels. */ int __chown_is_lchown (const char *file, uid_t owner, gid_t group) diff --git a/sysdeps/unix/sysv/linux/i386/pread.c b/sysdeps/unix/sysv/linux/i386/pread.c index 4c2f18d3f2..5745648306 100644 --- a/sysdeps/unix/sysv/linux/i386/pread.c +++ b/sysdeps/unix/sysv/linux/i386/pread.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,10 +23,14 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pread +#include <kernel-features.h> +#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 + +# if __ASSUME_PREAD_SYSCALL == 0 static ssize_t __emulate_pread (int fd, void *buf, size_t count, off_t offset) internal_function; +# endif ssize_t @@ -40,16 +44,21 @@ __pread (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pread, 5, fd, buf, count, offset, 0); +# if __ASSUME_PREAD_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pread (fd, buf, count, offset); +# endif return result; } weak_alias (__pread, pread) -#define __pread(fd, buf, count, offset) \ +# define __pread(fd, buf, count, offset) \ static internal_function __emulate_pread (fd, buf, count, offset) #endif -#include <sysdeps/posix/pread.c> + +#if __ASSUME_PREAD_SYSCALL == 0 +# include <sysdeps/posix/pread.c> +#endif diff --git a/sysdeps/unix/sysv/linux/i386/pread64.c b/sysdeps/unix/sysv/linux/i386/pread64.c index 8cfb3c0a43..aa0c54d385 100644 --- a/sysdeps/unix/sysv/linux/i386/pread64.c +++ b/sysdeps/unix/sysv/linux/i386/pread64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,13 +23,14 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pread +#include <kernel-features.h> -extern ssize_t __syscall_pread64 (int fd, void *buf, size_t count, - off_t offset_hi, off_t offset_lo); +#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 +# if __ASSUME_PREAD_SYSCALL == 0 static ssize_t __emulate_pread64 (int fd, void *buf, size_t count, off64_t offset) internal_function; +# endif ssize_t @@ -45,16 +46,21 @@ __pread64 (fd, buf, count, offset) result = INLINE_SYSCALL (pread, 5, fd, buf, count, (off_t) (offset & 0xffffffff), (off_t) (offset >> 32)); +# if __ASSUME_PREAD_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pread64 (fd, buf, count, offset); +# endif return result; } weak_alias (__pread64, pread64) -#define __pread64(fd, buf, count, offset) \ +# define __pread64(fd, buf, count, offset) \ static internal_function __emulate_pread64 (fd, buf, count, offset) #endif -#include <sysdeps/posix/pread64.c> + +#if __ASSUME_PREAD_SYSCALL == 0 +# include <sysdeps/posix/pread64.c> +#endif diff --git a/sysdeps/unix/sysv/linux/i386/pwrite.c b/sysdeps/unix/sysv/linux/i386/pwrite.c index a1fc99f156..90eee5b4e1 100644 --- a/sysdeps/unix/sysv/linux/i386/pwrite.c +++ b/sysdeps/unix/sysv/linux/i386/pwrite.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,10 +23,14 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pwrite +#include <kernel-features.h> +#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0 + +# if __ASSUME_PWRITE_SYSCALL == 0 static ssize_t __emulate_pwrite (int fd, const void *buf, size_t count, off_t offset) internal_function; +# endif ssize_t @@ -40,16 +44,21 @@ __pwrite (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pwrite, 5, fd, buf, count, offset, 0); +# if __ASSUME_PWRITE_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pwrite (fd, buf, count, offset); +# endif return result; } weak_alias (__pwrite, pwrite) -#define __pwrite(fd, buf, count, offset) \ +# define __pwrite(fd, buf, count, offset) \ static internal_function __emulate_pwrite (fd, buf, count, offset) #endif -#include <sysdeps/posix/pwrite.c> + +#if __ASSUME_PWRITE_SYSCALL == 0 +# include <sysdeps/posix/pwrite.c> +#endif diff --git a/sysdeps/unix/sysv/linux/i386/pwrite64.c b/sysdeps/unix/sysv/linux/i386/pwrite64.c index 7a5d665de3..500cd7cef3 100644 --- a/sysdeps/unix/sysv/linux/i386/pwrite64.c +++ b/sysdeps/unix/sysv/linux/i386/pwrite64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,10 +23,14 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pwrite +#include <kernel-features.h> +#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0 + +# if __ASSUME_PWRITE_SYSCALL == 0 static ssize_t __emulate_pwrite64 (int fd, const void *buf, size_t count, off64_t offset) internal_function; +# endif ssize_t @@ -42,16 +46,21 @@ __pwrite64 (fd, buf, count, offset) result = INLINE_SYSCALL (pwrite, 5, fd, buf, count, (off_t) (offset & 0xffffffff), (off_t) (offset >> 32)); +# if __ASSUME_PWRITE_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pwrite64 (fd, buf, count, offset); +# endif return result; } weak_alias (__pwrite64, pwrite64) -#define __pwrite64(fd, buf, count, offset) \ +# define __pwrite64(fd, buf, count, offset) \ static internal_function __emulate_pwrite64 (fd, buf, count, offset) #endif -#include <sysdeps/posix/pwrite64.c> + +#if __ASSUME_PWRITE_SYSCALL == 0 +# include <sysdeps/posix/pwrite64.c> +#endif diff --git a/sysdeps/unix/sysv/linux/init-first.c b/sysdeps/unix/sysv/linux/init-first.c index 01395baf75..b8ee2bdf14 100644 --- a/sysdeps/unix/sysv/linux/init-first.c +++ b/sysdeps/unix/sysv/linux/init-first.c @@ -1,5 +1,5 @@ /* Initialization code run first thing by the ELF startup code. Linux version. - Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc. + Copyright (C) 1995, 1996, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -17,12 +17,17 @@ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ +#include <stdio.h> +#include <fcntl.h> #include <unistd.h> #include <sysdep.h> #include <fpu_control.h> #include <linux/personality.h> #include <init-first.h> +#include <sys/param.h> +#include <sys/sysctl.h> #include <sys/types.h> +#include "kernel-features.h" extern void __libc_init_secure (void); extern void __libc_init (int, char **, char **); @@ -31,6 +36,10 @@ extern void __libc_global_ctors (void); /* The function is called from assembly stubs the compiler can't see. */ static void init (int, char **, char **) __attribute__ ((unused)); +/* The function we use to get the kernel revision. */ +extern int __sysctl (int *name, int nlen, void *oldval, size_t *oldlenp, + void *newval, size_t newlen); + extern int _dl_starting_up; weak_extern (_dl_starting_up) @@ -56,6 +65,69 @@ init (int argc, char **argv, char **envp) /* We must not call `personality' twice. */ if (!__libc_multiple_libcs) { + /* Test whether the kernel is new enough. This test is only + performed if the library is not compiled to run on all + kernels. */ + if (__LINUX_KERNEL_VERSION > 0) + { + static const int sysctl_args[] = { CTL_KERN, KERN_OSRELEASE }; + char buf[64]; + size_t reslen = sizeof (buf); + unsigned int version; + int parts; + char *cp; + + /* Try reading the number using `sysctl' first. */ + if (__sysctl ((int *) sysctl_args, + sizeof (sysctl_args) / sizeof (sysctl_args[0]), + buf, &reslen, NULL, 0) < 0) + { + /* This was not successful. Now try reading the /proc + filesystem. */ + int fd = __open ("/proc/sys/kernel/osrelease", O_RDONLY); + if (fd == -1 + || (reslen = __read (fd, buf, sizeof (buf))) <= 0) + /* This also didn't work. We give up since we cannot + make sure the library can actually work. */ + __libc_fatal ("FATAL: cannot determine library version\n"); + + __close (fd); + } + buf[MIN (reslen, sizeof (buf) - 1)] = '\0'; + + /* Now convert it into a number. The string consists of at most + three parts. */ + version = 0; + parts = 0; + cp = buf; + while ((*cp >= '0') && (*cp <= '9')) + { + unsigned int here = *cp++ - '0'; + + while ((*cp >= '0') && (*cp <= '9')) + { + here *= 10; + here += *cp++ - '0'; + } + + ++parts; + version <<= 8; + version |= here; + + if (*cp++ != '.') + /* Another part following? */ + break; + } + + if (parts < 3) + version <<= 8 * (3 - parts); + + /* Now we can test with the required version. */ + if (version < __LINUX_KERNEL_VERSION) + /* Not sufficent. */ + __libc_fatal ("FATAL: kernel too old\n"); + } + /* The `personality' system call takes one argument that chooses the "personality", i.e. the set of system calls and such. We must make this call first thing to disable emulation of some diff --git a/sysdeps/unix/sysv/linux/kernel-features.h b/sysdeps/unix/sysv/linux/kernel-features.h new file mode 100644 index 0000000000..6813853ccc --- /dev/null +++ b/sysdeps/unix/sysv/linux/kernel-features.h @@ -0,0 +1,74 @@ +/* Set flags signalling availability of kernel features based on given + kernel version number. + Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +/* This file must not contain any C code. At least it must be protected + to allow using the file also in assembler files. */ + +/* XXX For testing. */ +#define __LINUX_KERNEL_VERSION 131584 + +#ifndef __LINUX_KERNEL_VERSION +/* We assume the worst; all kernels should be supported. */ +# define __LINUX_KERNEL_VERSION 0 +#endif + +/* We assume for __LINUX_KERNEL_VERSION the same encoding used in + linux/version.h. I.e., the major, minor, and subminor all get a + byte with the major number being in the highest byte. This means + we can do numeric comparisons. + + In the following we will define certain symbols depending on + whether the describes kernel feature is available in the kernel + version given by __LINUX_KERNEL_VERSION. We are not always exactly + recording the correct versions in which the features were + introduced. If somebody cares these values can afterwards be + corrected. Most of the numbers here are set corresponding to + 2.2.0. */ + +/* `getcwd' system call. */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_GETCWD_SYSCALL 1 +#endif + +/* Real-time signal became usable in 2.1.70. */ +#if __LINUX_KERNEL_VERSION >= 131398 +# define __ASSUME_REALTIME_SIGNALS 1 +#endif + +/* When were the `pread'/`pwrite' syscalls introduced? */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_PREAD_SYSCALL 1 +# define __ASSUME_PWRITE_SYSCALL 1 +#endif + +/* When was `poll' introduced? */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_POLL_SYSCALL 1 +#endif + +/* The `lchown' syscall was introduced in 2.1.80. */ +#if __LINUX_KERNEL_VERSION >= 131408 +# define __ASSUME_LCHOWN_SYSCALL 1 +#endif + +/* When did the `setresuid' sysall became available? */ +#if __LINUX_KERNEL_VERSION >= 131584 +# define __ASSUME_SETRESUID_SYSCALL 1 +#endif diff --git a/sysdeps/unix/sysv/linux/poll.c b/sysdeps/unix/sysv/linux/poll.c index e7df3b7774..16433e53e7 100644 --- a/sysdeps/unix/sysv/linux/poll.c +++ b/sysdeps/unix/sysv/linux/poll.c @@ -22,13 +22,18 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_poll + +#include "kernel-features.h" + +#if defined __NR_poll || __ASSUME_POLL_SYSCALL > 0 extern int __syscall_poll __P ((struct pollfd *fds, unsigned int nfds, int timeout)); +# if __ASSUME_POLL_SYSCALL == 0 static int __emulate_poll __P ((struct pollfd *fds, unsigned long int nfds, int timeout)) internal_function; +# endif /* The real implementation. */ int @@ -37,6 +42,7 @@ __poll (fds, nfds, timeout) unsigned long int nfds; int timeout; { +# if __ASSUME_POLL_SYSCALL == 0 static int must_emulate; if (!must_emulate) @@ -52,6 +58,9 @@ __poll (fds, nfds, timeout) } return __emulate_poll (fds, nfds, timeout); +# else + return INLINE_SYSCALL (poll, 3, fds, nfds, timeout); +# endif } weak_alias (__poll, poll) @@ -59,4 +68,7 @@ weak_alias (__poll, poll) # define __poll(fds, nfds, timeout) \ static internal_function __emulate_poll (fds, nfds, timeout) #endif -#include <sysdeps/unix/bsd/poll.c> + +#if __ASSUME_POLL_SYSCALL == 0 +# include <sysdeps/unix/bsd/poll.c> +#endif diff --git a/sysdeps/unix/sysv/linux/pread.c b/sysdeps/unix/sysv/linux/pread.c index a9461cab2e..cae3d62a5d 100644 --- a/sysdeps/unix/sysv/linux/pread.c +++ b/sysdeps/unix/sysv/linux/pread.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,13 +23,17 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pread +#include "kernel-features.h" + +#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 extern ssize_t __syscall_pread (int fd, void *buf, size_t count, off_t offset_hi, off_t offset_lo); +# if __ASSUME_PREAD_SYSCALL == 0 static ssize_t __emulate_pread (int fd, void *buf, size_t count, off_t offset) internal_function; +# endif ssize_t @@ -43,16 +47,21 @@ __pread (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pread, 5, fd, buf, count, 0, offset); +# if __ASSUME_PREAD_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pread (fd, buf, count, offset); +# endif return result; } weak_alias (__pread, pread) -#define __pread(fd, buf, count, offset) \ +# define __pread(fd, buf, count, offset) \ static internal_function __emulate_pread (fd, buf, count, offset) #endif -#include <sysdeps/posix/pread.c> + +#if __ASSUME_PREAD_SYSCALL == 0 +# include <sysdeps/posix/pread.c> +#endif diff --git a/sysdeps/unix/sysv/linux/pread64.c b/sysdeps/unix/sysv/linux/pread64.c index b8e117770f..fc4f7f24a0 100644 --- a/sysdeps/unix/sysv/linux/pread64.c +++ b/sysdeps/unix/sysv/linux/pread64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,13 +23,17 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pread +#include "kernel-features.h" + +#if defined __NR_pread || __ASSUME_PREAD_SYSCALL > 0 extern ssize_t __syscall_pread (int fd, void *buf, size_t count, off_t offset_hi, off_t offset_lo); +# if __ASSUME_PREAD_SYSCALL == 0 static ssize_t __emulate_pread64 (int fd, void *buf, size_t count, off64_t offset) internal_function; +# endif ssize_t @@ -44,16 +48,21 @@ __pread64 (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pread, 5, fd, buf, count, (off_t) (offset >> 32), (off_t) (offset & 0xffffffff)); +# if __ASSUME_PREAD_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pread64 (fd, buf, count, offset); +# endif return result; } weak_alias (__pread64, pread64) -#define __pread64(fd, buf, count, offset) \ +# define __pread64(fd, buf, count, offset) \ static internal_function __emulate_pread64 (fd, buf, count, offset) #endif -#include <sysdeps/posix/pread64.c> + +# if __ASSUME_PREAD_SYSCALL == 0 +# include <sysdeps/posix/pread64.c> +#endif diff --git a/sysdeps/unix/sysv/linux/pwrite.c b/sysdeps/unix/sysv/linux/pwrite.c index cd7b8adaa1..fd4ec8896d 100644 --- a/sysdeps/unix/sysv/linux/pwrite.c +++ b/sysdeps/unix/sysv/linux/pwrite.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,13 +23,17 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pwrite +#include "kernel-features.h" + +#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0 extern ssize_t __syscall_pwrite (int fd, const void *buf, size_t count, off_t offset_hi, off_t offset_lo); +# if __ASSUME_PWRITE_SYSCALL == 0 static ssize_t __emulate_pwrite (int fd, const void *buf, size_t count, off_t offset) internal_function; +# endif ssize_t @@ -43,16 +47,21 @@ __pwrite (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pwrite, 5, fd, buf, count, 0, offset); +# if __ASSUME_PWRITE_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pwrite (fd, buf, count, offset); +# endif return result; } weak_alias (__pwrite, pwrite) -#define __pwrite(fd, buf, count, offset) \ +# define __pwrite(fd, buf, count, offset) \ static internal_function __emulate_pwrite (fd, buf, count, offset) #endif -#include <sysdeps/posix/pwrite.c> + +#if __ASSUME_PWRITE_SYSCALL == 0 +# include <sysdeps/posix/pwrite.c> +#endif diff --git a/sysdeps/unix/sysv/linux/pwrite64.c b/sysdeps/unix/sysv/linux/pwrite64.c index b6ebba154b..cc92de1d76 100644 --- a/sysdeps/unix/sysv/linux/pwrite64.c +++ b/sysdeps/unix/sysv/linux/pwrite64.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1997, 1998 Free Software Foundation, Inc. +/* Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -23,13 +23,17 @@ #include <sysdep.h> #include <sys/syscall.h> -#ifdef __NR_pwrite +#include "kernel-features.h" + +#if defined __NR_pwrite || __ASSUME_PWRITE_SYSCALL > 0 extern ssize_t __syscall_pwrite64 (int fd, const void *buf, size_t count, off_t offset_hi, off_t offset_lo); +# if __ASSUME_PWRITE_SYSCALL == 0 static ssize_t __emulate_pwrite64 (int fd, const void *buf, size_t count, off64_t offset) internal_function; +# endif ssize_t @@ -44,16 +48,21 @@ __pwrite64 (fd, buf, count, offset) /* First try the syscall. */ result = INLINE_SYSCALL (pwrite, 5, fd, buf, count, (off_t) (offset >> 32), (off_t) (offset & 0xffffffff)); +# if __ASSUME_PWRITE_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use the emulation. */ result = __emulate_pwrite64 (fd, buf, count, offset); +# endif return result; } weak_alias (__pwrite64, pwrite64) -#define __pwrite64(fd, buf, count, offset) \ +# define __pwrite64(fd, buf, count, offset) \ static internal_function __emulate_pwrite64 (fd, buf, count, offset) #endif -#include <sysdeps/posix/pwrite64.c> + +#if __ASSUME_PWRITE_SYSCALL == 0 +# include <sysdeps/posix/pwrite64.c> +#endif diff --git a/sysdeps/unix/sysv/linux/seteuid.c b/sysdeps/unix/sysv/linux/seteuid.c index 20840dbfc0..15687e36e4 100644 --- a/sysdeps/unix/sysv/linux/seteuid.c +++ b/sysdeps/unix/sysv/linux/seteuid.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -21,7 +21,9 @@ #include <sys/types.h> #include <unistd.h> -#ifdef __NR_setresuid +#include "kernel-features.h" + +#if defined __NR_setresuid || __ASSUME_SETRESUID_SYSCALL > 0 extern int __setresuid (uid_t ruid, uid_t euid, uid_t suid); @@ -38,11 +40,13 @@ seteuid (uid_t uid) /* First try the syscall. */ result = __setresuid (-1, uid, -1); +# if __ASSUME_SETRESUID_SYSCALL == 0 if (result == -1 && errno == ENOSYS) /* No system call available. Use emulation. This may not work since `setreuid' also sets the saved user ID when UID is not equal to the real user ID, making it impossible to switch back. */ result = __setreuid (-1, uid); +# endif return result; } diff --git a/sysdeps/unix/sysv/linux/sigaction.c b/sysdeps/unix/sysv/linux/sigaction.c index a5580cc0e6..40f9bbc252 100644 --- a/sysdeps/unix/sysv/linux/sigaction.c +++ b/sysdeps/unix/sysv/linux/sigaction.c @@ -23,20 +23,27 @@ #include <sysdep.h> #include <sys/syscall.h> +#include "kernel-features.h" + /* The difference here is that the sigaction structure used in the kernel is not the same as we use in the libc. Therefore we must translate it here. */ #include <kernel_sigaction.h> +#if __ASSUME_REALTIME_SIGNALS == 0 +/* The variable is shared between all wrappers around signal handling + functions which have RT equivalents. This is the definition. */ +int __libc_missing_rt_sigs; + extern int __syscall_sigaction (int, const struct old_kernel_sigaction *, struct old_kernel_sigaction *); +# define rtsignals_guaranteed 0 +#else +# define rtsignals_guaranteed 1 +#endif extern int __syscall_rt_sigaction (int, const struct kernel_sigaction *, struct kernel_sigaction *, size_t); -/* The variable is shared between all wrappers around signal handling - functions which have RT equivalents. This is the definition. */ -int __libc_missing_rt_sigs; - /* If ACT is not NULL, change the action for SIG to *ACT. If OACT is not NULL, put the old action for SIG in *OACT. */ @@ -49,12 +56,18 @@ __sigaction (sig, act, oact) struct old_kernel_sigaction k_sigact, k_osigact; int result; -#ifdef __NR_rt_sigaction +#if defiend __NR_rt_sigaction || __ASSUME_REALTIME_SIGNALS > 0 /* First try the RT signals. */ +# if __ASSUME_REALTIME_SIGNALS == 0 if (!__libc_missing_rt_sigs) +# endif { struct kernel_sigaction kact, koact; + /* Save the current error value for later. We need not do this + if we are guaranteed to have realtime signals. */ +# if __ASSUME_REALTIME_SIGNALS == 0 int saved_errno = errno; +# endif if (act) { @@ -71,7 +84,9 @@ __sigaction (sig, act, oact) result = INLINE_SYSCALL (rt_sigaction, 4, sig, act ? &kact : NULL, oact ? &koact : NULL, _NSIG / 8); +# if __ASSUME_REALTIME_SIGNALS == 0 if (result >= 0 || errno != ENOSYS) +# endif { if (oact && result >= 0) { @@ -85,19 +100,22 @@ __sigaction (sig, act, oact) return result; } +# if __ASSUME_REALTIME_SIGNALS == 0 __set_errno (saved_errno); __libc_missing_rt_sigs = 1; +# endif } #endif +#if __ASSUME_REALTIME_SIGNALS == 0 if (act) { k_sigact.k_sa_handler = act->sa_handler; k_sigact.sa_mask = act->sa_mask.__val[0]; k_sigact.sa_flags = act->sa_flags; -#ifdef HAVE_SA_RESTORER +# ifdef HAVE_SA_RESTORER k_sigact.sa_restorer = act->sa_restorer; -#endif +# endif } result = INLINE_SYSCALL (sigaction, 3, sig, act ? &k_sigact : NULL, oact ? &k_osigact : NULL); @@ -106,11 +124,12 @@ __sigaction (sig, act, oact) oact->sa_handler = k_osigact.k_sa_handler; oact->sa_mask.__val[0] = k_osigact.sa_mask; oact->sa_flags = k_osigact.sa_flags; -#ifdef HAVE_SA_RESTORER +# ifdef HAVE_SA_RESTORER oact->sa_restorer = k_osigact.sa_restorer; -#endif +# endif } return result; +#endif } weak_alias (__sigaction, sigaction) diff --git a/sysdeps/unix/sysv/linux/sigpending.c b/sysdeps/unix/sysv/linux/sigpending.c index c41c4f266a..932314520c 100644 --- a/sysdeps/unix/sysv/linux/sigpending.c +++ b/sysdeps/unix/sysv/linux/sigpending.c @@ -23,6 +23,8 @@ #include <sysdep.h> #include <sys/syscall.h> +#include "kernel-features.h" + extern int __syscall_sigpending (sigset_t *); extern int __syscall_rt_sigpending (sigset_t *, size_t); @@ -38,7 +40,10 @@ int sigpending (set) sigset_t *set; { -#ifdef __NR_rt_pending +#if __ASSUME_REALTIME_SIGNALS > 0 + return INLINE_SYSCALL (rt_sigpending, 2, set, _NSIG / 8); +#else +# ifdef __NR_rt_pending /* First try the RT signals. */ if (!__libc_missing_rt_sigs) { @@ -53,7 +58,8 @@ sigpending (set) __set_errno (saved_errno); __libc_missing_rt_sigs = 1; } -#endif +# endif return INLINE_SYSCALL (sigpending, 1, set); +#endif } diff --git a/sysdeps/unix/sysv/linux/sigprocmask.c b/sysdeps/unix/sysv/linux/sigprocmask.c index 5e72c9892d..3e0719aa7f 100644 --- a/sysdeps/unix/sysv/linux/sigprocmask.c +++ b/sysdeps/unix/sysv/linux/sigprocmask.c @@ -23,6 +23,9 @@ #include <sysdep.h> #include <sys/syscall.h> +#include "kernel-features.h" + + extern int __syscall_sigprocmask (int, const sigset_t *, sigset_t *); extern int __syscall_rt_sigprocmask (int, const sigset_t *, sigset_t *, size_t); @@ -39,7 +42,10 @@ __sigprocmask (how, set, oset) const sigset_t *set; sigset_t *oset; { -#ifdef __NR_rt_sigprocmask +#if __ASSUME_REALTIME_SIGNALS > 0 + return INLINE_SYSCALL (rt_sigprocmask, 4, how, set, oset, _NSIG / 8); +#else +# ifdef __NR_rt_sigprocmask /* First try the RT signals. */ if (!__libc_missing_rt_sigs) { @@ -55,8 +61,9 @@ __sigprocmask (how, set, oset) __set_errno (saved_errno); __libc_missing_rt_sigs = 1; } -#endif +# endif return INLINE_SYSCALL (sigprocmask, 3, how, set, oset); +#endif } weak_alias (__sigprocmask, sigprocmask) diff --git a/sysdeps/unix/sysv/linux/sigsuspend.c b/sysdeps/unix/sysv/linux/sigsuspend.c index 1d0dba0270..da743396b8 100644 --- a/sysdeps/unix/sysv/linux/sigsuspend.c +++ b/sysdeps/unix/sysv/linux/sigsuspend.c @@ -23,6 +23,8 @@ #include <sysdep.h> #include <sys/syscall.h> +#include "kernel-features.h" + extern int __syscall_sigsuspend (int, unsigned long int, unsigned long int); extern int __syscall_rt_sigsuspend (const sigset_t *, size_t); @@ -38,7 +40,10 @@ int __sigsuspend (set) const sigset_t *set; { -#ifdef __NR_rt_sigsuspend +#if __ASSUME_REALTIME_SIGNALS + return INLINE_SYSCALL (rt_sigsuspend, 2, set, _NSIG / 8); +#else +# ifdef __NR_rt_sigsuspend /* First try the RT signals. */ if (!__libc_missing_rt_sigs) { @@ -53,8 +58,9 @@ __sigsuspend (set) __set_errno (saved_errno); __libc_missing_rt_sigs = 1; } -#endif +# endif return INLINE_SYSCALL (sigsuspend, 3, 0, 0, set->__val[0]); +#endif } weak_alias (__sigsuspend, sigsuspend) diff --git a/sysdeps/unix/sysv/linux/sysctl.c b/sysdeps/unix/sysv/linux/sysctl.c index 1ab3c79bed..b131820a30 100644 --- a/sysdeps/unix/sysv/linux/sysctl.c +++ b/sysdeps/unix/sysv/linux/sysctl.c @@ -1,5 +1,5 @@ /* Read or write system information. Linux version. - Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc. + Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -26,8 +26,8 @@ extern int __syscall__sysctl (struct __sysctl_args *args); int -sysctl (int *name, int nlen, void *oldval, size_t *oldlenp, - void *newval, size_t newlen) +__sysctl (int *name, int nlen, void *oldval, size_t *oldlenp, + void *newval, size_t newlen) { struct __sysctl_args args = { @@ -41,3 +41,4 @@ sysctl (int *name, int nlen, void *oldval, size_t *oldlenp, return INLINE_SYSCALL (_sysctl, 1, &args); } +weak_alias (__sysctl, sysctl) diff --git a/sysdeps/unix/sysv/linux/testrtsig.h b/sysdeps/unix/sysv/linux/testrtsig.h index 7c41877e66..72d4e5a3d2 100644 --- a/sysdeps/unix/sysv/linux/testrtsig.h +++ b/sysdeps/unix/sysv/linux/testrtsig.h @@ -1,5 +1,5 @@ /* Test whether RT signals are really available. - Copyright (C) 1997 Free Software Foundation, Inc. + Copyright (C) 1997, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -21,10 +21,16 @@ #include <string.h> #include <sys/utsname.h> +#include "kernel-features.h" + static int kernel_has_rtsig (void) { +#if __ASSUME_REALTIME_SIGNALS + return 1; +#else struct utsname name; return uname (&name) == 0 && __strverscmp (name.release, "2.1.70") >= 0; +#endif } |