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58 lines
1.8 KiB
58 lines
1.8 KiB
#
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# Copyright 2007 Google Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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# GGL_CHECK_STACK_PROTECTOR([ACTION-IF-OK], [ACTION-IF-NOT-OK])
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# Check if c compiler supports -fstack-protector and -fstack-protector-all
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# options.
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AC_DEFUN([GGL_CHECK_STACK_PROTECTOR], [
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ggl_check_stack_protector_save_CXXFLAGS="$CXXFLAGS"
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ggl_check_stack_protector_save_CFLAGS="$CFLAGS"
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AC_MSG_CHECKING([if -fstack-protector and -fstack-protector-all are supported.])
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CXXFLAGS="$CXXFLAGS -fstack-protector"
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CFLAGS="$CFLAGS -fstack-protector"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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int main() {
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return 0;
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}
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])],
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[ggl_check_stack_protector_ok=yes],
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[ggl_check_stack_protector_ok=no])
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CXXFLAGS="$ggl_check_stack_protector_save_CXXFLAGS -fstack-protector-all"
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CFLAGS="$ggl_check_stack_protector_save_CFLAGS -fstack-protector-all"
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([
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int main() {
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return 0;
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}
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])],
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[ggl_check_stack_protector_all_ok=yes],
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[ggl_check_stack_protector_all_ok=no])
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if test "x$ggl_check_stack_protector_ok" = "xyes" -a \
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"x$ggl_check_stack_protector_all_ok" = "xyes"; then
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AC_MSG_RESULT([yes])
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ifelse([$1], , :, [$1])
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else
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AC_MSG_RESULT([no])
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ifelse([$2], , :, [$2])
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fi
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CXXFLAGS="$ggl_check_stack_protector_save_CXXFLAGS"
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CFLAGS="$ggl_check_stack_protector_save_CFLAGS"
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]) # GGL_CHECK_STACK_PROTECTOR
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