mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-08 12:08:46 +00:00
456e1f6a69
it is set. llvm-svn: 209742
110 lines
3.2 KiB
Plaintext
110 lines
3.2 KiB
Plaintext
#
|
|
# Get the linker version string.
|
|
#
|
|
# This macro is specific to LLVM.
|
|
#
|
|
AC_DEFUN([AC_LINK_GET_VERSION],
|
|
[AC_CACHE_CHECK([for linker version],[llvm_cv_link_version],
|
|
[
|
|
version_string="$(${LD:-ld} -v 2>&1 | head -1)"
|
|
|
|
# Check for ld64.
|
|
if (echo "$version_string" | grep -q "ld64"); then
|
|
llvm_cv_link_version=$(echo "$version_string" | sed -e "s#.*ld64-\([^ ]*\)\( (.*)\)\{0,1\}#\1#")
|
|
else
|
|
llvm_cv_link_version=$(echo "$version_string" | sed -e "s#[^0-9]*\([0-9.]*\).*#\1#")
|
|
fi
|
|
])
|
|
AC_DEFINE_UNQUOTED([HOST_LINK_VERSION],"$llvm_cv_link_version",
|
|
[Linker version detected at compile time.])
|
|
])
|
|
|
|
#
|
|
# Determine if the system can handle the -R option being passed to the linker.
|
|
#
|
|
# This macro is specific to LLVM.
|
|
#
|
|
AC_DEFUN([AC_LINK_USE_R],
|
|
[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r],
|
|
[ AC_LANG_PUSH([C])
|
|
oldcflags="$CFLAGS"
|
|
CFLAGS="$CFLAGS -Wl,-R."
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
|
|
[llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no])
|
|
CFLAGS="$oldcflags"
|
|
AC_LANG_POP([C])
|
|
])
|
|
if test "$llvm_cv_link_use_r" = yes ; then
|
|
AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.])
|
|
fi
|
|
])
|
|
|
|
#
|
|
# Determine if the system can handle the -rdynamic option being passed
|
|
# to the compiler.
|
|
#
|
|
# This macro is specific to LLVM.
|
|
#
|
|
AC_DEFUN([AC_LINK_EXPORT_DYNAMIC],
|
|
[AC_CACHE_CHECK([for compiler -rdynamic option],
|
|
[llvm_cv_link_use_export_dynamic],
|
|
[ AC_LANG_PUSH([C])
|
|
oldcflags="$CFLAGS"
|
|
CFLAGS="$CFLAGS -rdynamic"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
|
|
[llvm_cv_link_use_export_dynamic=yes],[llvm_cv_link_use_export_dynamic=no])
|
|
CFLAGS="$oldcflags"
|
|
AC_LANG_POP([C])
|
|
])
|
|
if test "$llvm_cv_link_use_export_dynamic" = yes ; then
|
|
AC_DEFINE([HAVE_LINK_EXPORT_DYNAMIC],[1],[Define if you can use -rdynamic.])
|
|
fi
|
|
])
|
|
|
|
#
|
|
# Determine if the system can handle the --version-script option being
|
|
# passed to the linker.
|
|
#
|
|
# This macro is specific to LLVM.
|
|
#
|
|
AC_DEFUN([AC_LINK_VERSION_SCRIPT],
|
|
[AC_CACHE_CHECK([for compiler -Wl,--version-script option],
|
|
[llvm_cv_link_use_version_script],
|
|
[ AC_LANG_PUSH([C])
|
|
oldcflags="$CFLAGS"
|
|
|
|
# The following code is from the autoconf manual,
|
|
# "11.13: Limitations of Usual Tools".
|
|
# Create a temporary directory $tmp in $TMPDIR (default /tmp).
|
|
# Use mktemp if possible; otherwise fall back on mkdir,
|
|
# with $RANDOM to make collisions less likely.
|
|
: ${TMPDIR=/tmp}
|
|
{
|
|
tmp=`
|
|
(umask 077 && mktemp -d "$TMPDIR/fooXXXXXX") 2>/dev/null
|
|
` &&
|
|
test -n "$tmp" && test -d "$tmp"
|
|
} || {
|
|
tmp=$TMPDIR/foo$$-$RANDOM
|
|
(umask 077 && mkdir "$tmp")
|
|
} || exit $?
|
|
|
|
echo "{" > "$tmp/export.map"
|
|
echo " global: main;" >> "$tmp/export.map"
|
|
echo " local: *;" >> "$tmp/export.map"
|
|
echo "};" >> "$tmp/export.map"
|
|
|
|
CFLAGS="$CFLAGS -Wl,--version-script=$tmp/export.map"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],
|
|
[llvm_cv_link_use_version_script=yes],[llvm_cv_link_use_version_script=no])
|
|
rm "$tmp/export.map"
|
|
rmdir "$tmp"
|
|
CFLAGS="$oldcflags"
|
|
AC_LANG_POP([C])
|
|
])
|
|
if test "$llvm_cv_link_use_version_script" = yes ; then
|
|
AC_SUBST(HAVE_LINK_VERSION_SCRIPT,1)
|
|
fi
|
|
])
|
|
|