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#!@@SH@@
# $NetBSD: cpuflags.sh,v 1.7 2009/01/28 23:30:50 abs Exp $
PATH=/sbin:/usr/sbin:/bin:/usr/bin:$PATH
# cd to the directory containing the binary, so we can usefully check for
# include files from there
case "$0" in
/*) cd $(dirname $0);;
*) cd $(dirname $PWD/$0);;
esac
include()
{
file=$1
if [ -f ./$file ] ; then
file=./$file
else
file=@PREFIX@/share/cpuflags/$file
fi
verbose . $file
. $file
}
verbose()
{
[ -n "$opt_v" ] && echo $* >&2
return 0
}
UNAME=$(uname)
if [ "$1" = -v ] ; then
shift
opt_v=1
fi
if [ -n "$1" ]; then
CC=$1
else
CC=gcc
fi
# Each UNAME subr_ file is expected to set AWK & SED, and to provide the
# following methods:
# extract_hw_details: Must be called before determine_arch/determine_features
# determine_arch: Returns cpu arch
# determine_features: Returns cpu features
# display_hw_details: Human readable output for current machine
#
include subr_${UNAME}
# This provides gcc_ser(), gcc_ver() and gcc_fixup_arch_flags()
#
include subr_gcc
# native arch
M_ARCH_NATIVE='-march=native'
# Determine the flags for this OS/machine
extract_hw_details
if [ $(gcc_ser $CC) -gt 4002 ] ; then
ARCH="$M_ARCH_NATIVE"
else
ARCH=$(determine_arch)
fi
FEATURES=$(determine_features)
test "x$ARCH" != "x$M_ARCH_NATIVE" && # gcc have not autodetection
case "$hw_machine_arch" in # all known x86 mnemonics
i386|i486|i586|i686|x86_64|amd64|i86pc)
include subr_x86 # this provides flags_fixup_x86arch()
l_arch=$(flags_fixup_x86arch "$ARCH" "$FEATURES")
test -n "$l_arch" && ARCH="-march=$l_arch"
esac
# Fixup any flags which are too new for our gcc version
#
CPUFLAGS=$(gcc_fixup_arch_flags $CC $ARCH $FEATURES)
CPUFLAGS=$(echo $CPUFLAGS)
if [ -n "$opt_v" ] ; then
if [ -n "$NOARCH" ] ; then
ARCH="No flags for this architecture"
fi
if [ -z "$ARCH" ]; then
ARCH=Unknown
fi
cat <<END
ARCH : $ARCH
FEATURES : $FEATURES
CPUFLAGS : $CPUFLAGS
GCC version : $(gcc_ver $CC)
END
display_hw_details
exit;
fi
if [ -z "$ARCH" -a -z "$NOARCH" ] ; then
echo 'Unknown machine - please send cpuflags details to abs@absd.org' >&2
display_hw_details >&2
fi
echo $CPUFLAGS
exit 0
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