Split dlopen.buildlink3.mk into two files: dlopen.buildlink3.mk, which

is included by packages that use dlopen(), and dlopen.builtin.mk,
which checks for the presence of built-in dl*() functions.  On Darwin,
including dlopen.buildlink3.mk will cause the devel/dlcompat package
to be used if the base system lacks a dlcompat library.

1 files changed, 79 insertions, 0 deletions

diff --git a/mk/dlopen.builtin.mk b/mk/dlopen.builtin.mk
new file mode 100644
index 00000000000..09600d6b6d2
--- /dev/null
+++ b/mk/dlopen.builtin.mk
@@ -0,0 +1,79 @@
+# $NetBSD: dlopen.builtin.mk,v 1.1 2004/11/26 07:05:19 jlam Exp $
+
+.for _lib_ in dl
+.  if !defined(_BLNK_LIB_FOUND.${_lib_})
+_BLNK_LIB_FOUND.${_lib_}!=	\
+	if ${TEST} "`${ECHO} /usr/lib/lib${_lib_}.*`" = "/usr/lib/lib${_lib_}.*"; then \
+		${ECHO} "no";						\
+	elif ${TEST} "`${ECHO} /lib/lib${_lib_}.*`" = "/lib/lib${_lib_}.*"; then \
+		${ECHO} "no";						\
+	else								\
+		${ECHO} "yes";						\
+	fi
+BUILDLINK_VARS+=	_BLNK_LIB_FOUND.${_lib_}
+.  endif
+.endfor
+.undef _lib_
+
+.if !defined(IS_BUILTIN.dl)
+IS_BUILTIN.dl=		no
+.  if exists(/usr/include/dlfcn.h)
+IS_BUILTIN.dl=		yes
+.  endif
+BUILDLINK_VARS+=	IS_BUILTIN.dl
+.endif	# IS_BUILTIN.pthread
+
+.if !defined(USE_BUILTIN.dl)
+USE_BUILTIN.dl=		${IS_BUILTIN.dl}
+.  if ${OPSYS} == "Darwin"
+USE_BUILTIN.dl=		no	# Darwin uses devel/dlcompat
+.  endif
+.endif
+
+CHECK_BUILTIN.dl?=	no
+.if !empty(CHECK_BUILTIN.dl:M[nN][oO])
+
+.  if !empty(USE_BUILTIN.dl:M[yY][eE][sS])
+BUILDLINK_PREFIX.dl=	/usr
+.    if !empty(_BLNK_LIB_FOUND.dl:M[yY][eE][sS])
+BUILDLINK_LIBS.dl=	-ldl
+.    endif
+#
+# The following platforms require pthreads to be linked into the
+# application if it uses dlopen() or else the applications will core
+# dump when they dlopen a shared module that _is_ linked with pthread
+# support.
+#
+_DLOPEN_REQUIRE_PTHREAD_PLATFORMS=					\
+	NetBSD-2.[0-9]-* NetBSD-2.[0-8][0-9]*-* NetBSD-2.9[0-8]*-*	\
+	NetBSD-2.99.[0-9]-* NetBSD-2.99.10-*
+
+_DLOPEN_REQUIRE_PTHREADS?=	no
+.    for _pattern_ in ${_DLOPEN_REQUIRE_PTHREAD_PLATFORMS}
+.      if !empty(MACHINE_PLATFORM:M${_pattern_})
+.        if !empty(PREFER_NATIVE_PTHREADS:M[yY][eE][sS])
+_DLOPEN_REQUIRE_PTHREADS=	yes
+.        endif
+.      endif
+.    endfor
+#
+# DLOPEN_REQUIRE_PTHREADS is a user- and package-settable yes/no variable
+#	whose value decides whether pthread.buildlink3.mk is automatically
+#	included or not.  Its default value depends on whether native
+#	pthreads exist.
+#
+# Including pthread.buildlink3.mk is deferred until bsd.pkg.mk.
+#
+.    if defined(DLOPEN_REQUIRE_PTHREADS)
+_DLOPEN_REQUIRE_PTHREADS:=      ${DLOPEN_REQUIRE_PTHREADS}
+.    else
+DLOPEN_REQUIRE_PTHREADS=        ${_DLOPEN_REQUIRE_PTHREADS}
+.    endif
+.    if !empty(_DLOPEN_REQUIRE_PTHREADS:M[yY][eE][sS])
+BUILDLINK_CFLAGS.dl+=	${PTHREAD_CFLAGS}
+BUILDLINK_LDFLAGS.dl+=	${PTHREAD_LDFLAGS}
+BUILDLINK_LIBS.dl+=	${PTHREAD_LIBS}
+.    endif
+.  endif # USE_BUILTIN.dl == yes
+
+.endif	# CHECK_BUILTIN.dl