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authorKay Sievers <kay@vrfy.org>2013-11-21 21:56:18 +0100
committerKay Sievers <kay@vrfy.org>2013-11-21 21:56:18 +0100
commitb850b06e1efcc7e27cfd785759a3a913ac9ed196 (patch)
treecb8203931639a9b77af4f9ff893ae2e50bdcb7ba
parent92b315dfb482626ca6c98b67cd862e4af483a499 (diff)
build-sys: enable gcc Link Time Optimization when optimization is enabled
-rw-r--r--configure.ac4
1 files changed, 4 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 7794541964..c0656f4fb3 100644
--- a/configure.ac
+++ b/configure.ac
@@ -156,6 +156,10 @@ CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
-fdata-sections \
-fstack-protector \
--param=ssp-buffer-size=4])
+AS_CASE([$CFLAGS], [*-O[[12345\ ]]*],
+ [CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
+ -flto])],
+ [AC_MSG_RESULT([skipping -flto, optimization not enabled])])
AC_SUBST([OUR_CFLAGS], "$with_cflags $address_sanitizer_cflags")
AS_CASE([$CFLAGS], [*-O[[12345\ ]]*],