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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:58:51 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 14:58:51 +0000 |
| commit | cbffab246997fb5a06211dfb706b54e5ae5bb59f (patch) | |
| tree | 0573c5d96f58d74d76a49c0f2a70398e389a36d3 /m4/dpkg-linker.m4 | |
| parent | Initial commit. (diff) | |
| download | dpkg-cbffab246997fb5a06211dfb706b54e5ae5bb59f.tar.xz dpkg-cbffab246997fb5a06211dfb706b54e5ae5bb59f.zip | |
Adding upstream version 1.21.22.upstream/1.21.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'm4/dpkg-linker.m4')
| -rw-r--r-- | m4/dpkg-linker.m4 | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/m4/dpkg-linker.m4 b/m4/dpkg-linker.m4 new file mode 100644 index 0000000..d3abb30 --- /dev/null +++ b/m4/dpkg-linker.m4 @@ -0,0 +1,65 @@ +# serial 1 +# Copyright © 2004 Scott James Remnant <scott@netsplit.com>. +# Copyright © 2010, 2014, 2016 Guillem Jover <guillem@debian.org> + +# DPKG_LINKER_OPTIMIZATIONS +# ------------------------- +# Add configure option to disable linker optimizations. +AC_DEFUN([DPKG_LINKER_OPTIMIZATIONS], [ + AC_ARG_ENABLE([linker-optimizations], + [AS_HELP_STRING([--disable-linker-optimizations], + [Disable (detected) linker optimizations])], + [], [enable_linker_optimizations=yes]) + + AS_IF([test "x$enable_linker_optimizations" = "xno"], [ + LDFLAGS=$(echo "$LDFLAGS" | $SED -e "s/ -Wl,-O[[0-9]]*\b//g") + ], [ + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -Wl,-O1" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([[]], [[]]) + ], [], [ + LDFLAGS="$save_LDFLAGS" + ]) + ]) +]) + +# DPKG_LINKER_AS_NEEDED +# --------------------- +AC_DEFUN([DPKG_LINKER_AS_NEEDED], [ + AC_CACHE_CHECK([for --as-needed linker flag], [dpkg_cv_linker_as_needed], [ + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -Wl,--as-needed" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([], []) + ], [ + dpkg_cv_linker_as_needed=yes + ], [ + dpkg_cv_linker_as_needed=no + ]) + LDFLAGS="$save_LDFLAGS" + ]) + AM_CONDITIONAL([HAVE_LINKER_AS_NEEDED], + [test "x$dpkg_cv_linker_as_needed" = "xyes"]) +]) + +# DPKG_LINKER_VERSION_SCRIPT +# -------------------------- +AC_DEFUN([DPKG_LINKER_VERSION_SCRIPT], [ + AC_CACHE_CHECK([for --version-script linker flag], [dpkg_cv_version_script], [ + echo "{ global: symbol; local: *; };" >conftest.map + save_LDFLAGS=$LDFLAGS + LDFLAGS="$LDFLAGS -Wl,--version-script=conftest.map" + AC_LINK_IFELSE([ + AC_LANG_PROGRAM([], []) + ], [ + dpkg_cv_version_script=yes + ], [ + dpkg_cv_version_script=no + ]) + LDFLAGS="$save_LDFLAGS" + rm -f conftest.map + ]) + AM_CONDITIONAL([HAVE_LINKER_VERSION_SCRIPT], + [test "x$dpkg_cv_version_script" = "xyes"]) +]) |