From 2772b3db795ff963a6dc9fade6e561b6e23dea9a Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= Date: Mon, 25 Feb 2013 23:31:12 +0100 Subject: [PATCH] build-sys: must link with -fstack-protector MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit It is needed to give that flag to the linker as well, but latest libtool 2.4.2 still swallows that argument, so let's pass it with libtool -Wc argument. qemu-1.4.0/stubs/arch-query-cpu-def.c:6: undefined reference to `__stack_chk_guard' Signed-off-by: Marc-André Lureau Reviewed-by: Alon Levy (cherry picked from commit 37746c5eacf309fa019ea0fa45f776c36c561457) Conflicts: configure --- configure | 8 +++++++- rules.mak | 1 + 2 files changed, 8 insertions(+), 1 deletion(-) diff --git a/configure b/configure index 2996e1d..e8633c5 100755 --- a/configure +++ b/configure @@ -1197,7 +1197,7 @@ fi gcc_flags="-Wold-style-declaration -Wold-style-definition -Wtype-limits" gcc_flags="-Wformat-security -Wformat-y2k -Winit-self -Wignored-qualifiers $gcc_flags" gcc_flags="-Wmissing-include-dirs -Wempty-body -Wnested-externs $gcc_flags" -gcc_flags="-fstack-protector-all -Wendif-labels $gcc_flags" +gcc_flags="-Wendif-labels $gcc_flags" gcc_flags="-Wno-initializer-overrides $gcc_flags" # Note that we do not add -Werror to gcc_flags here, because that would # enable it for all configure tests. If a configure test failed due @@ -1216,6 +1216,11 @@ for flag in $gcc_flags; do fi done +if compile_prog "-Werror -fstack-protector-all" "" ; then + QEMU_CFLAGS="$QEMU_CFLAGS -fstack-protector-all" + LIBTOOLFLAGS="$LIBTOOLFLAGS -Wc,-fstack-protector-all" +fi + # Workaround for http://gcc.gnu.org/PR55489. Happens with -fPIE/-fPIC and # large functions that use global variables. The bug is in all releases of # GCC, but it became particularly acute in 4.6.x and 4.7.x. It is fixed in @@ -3832,6 +3837,7 @@ fi echo "LDFLAGS=$LDFLAGS" >> $config_host_mak echo "ARLIBS_BEGIN=$arlibs_begin" >> $config_host_mak echo "ARLIBS_END=$arlibs_end" >> $config_host_mak +echo "LIBTOOLFLAGS=$LIBTOOLFLAGS" >> $config_host_mak echo "LIBS+=$LIBS" >> $config_host_mak echo "LIBS_TOOLS+=$libs_tools" >> $config_host_mak echo "EXESUF=$EXESUF" >> $config_host_mak diff --git a/rules.mak b/rules.mak index edc2552..36aba2d 100644 --- a/rules.mak +++ b/rules.mak @@ -36,6 +36,7 @@ LINK = $(call quiet-command,\ $(if $(filter %.lo %.la,$^),$(LIBTOOL) --mode=link --tag=CC \ )$(CC) $(QEMU_CFLAGS) $(CFLAGS) $(LDFLAGS) -o $@ \ $(sort $(filter %.o, $1)) $(filter-out %.o, $1) $(version-obj-y) \ + $(if $(filter %.lo %.la,$^),$(LIBTOOLFLAGS)) \ $(LIBS),$(if $(filter %.lo %.la,$^),"lt LINK ", " LINK ")"$(TARGET_DIR)$@") endif