[Buildroot] [PATCH] musl: work around gcc 4.9.x bug
Gustavo Zacarias
gustavo at zacarias.com.ar
Thu Jul 17 12:43:57 UTC 2014
MUSL doesn't build happily with gcc 4.9.0/1 so work around the bug when
appropiate as suggested by upstream.
Signed-off-by: Gustavo Zacarias <gustavo at zacarias.com.ar>
---
package/musl/musl.mk | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/package/musl/musl.mk b/package/musl/musl.mk
index 2278799..f15e797 100644
--- a/package/musl/musl.mk
+++ b/package/musl/musl.mk
@@ -18,6 +18,12 @@ MUSL_ADD_TOOLCHAIN_DEPENDENCY = NO
MUSL_INSTALL_STAGING = YES
+# gcc constant folding bug with weak aliases workaround
+# See http://www.openwall.com/lists/musl/2014/05/15/1
+ifeq ($(BR2_GCC_VERSION_4_9_X),y)
+MUSL_EXTRA_CFLAGS += -fno-toplevel-reorder
+endif
+
# We need to run the musl configure script prior to building the
# gcc-intermediate, so that we can call the install-headers step and
# get the crt<X>.o built. However, we need to call it again after
@@ -29,7 +35,7 @@ MUSL_INSTALL_STAGING = YES
define MUSL_CONFIGURE_CALL
(cd $(@D); \
$(TARGET_CONFIGURE_OPTS) \
- CFLAGS="$(filter-out -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64,$(TARGET_CFLAGS))" \
+ CFLAGS="$(filter-out -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64,$(TARGET_CFLAGS)) $(MUSL_EXTRA_CFLAGS)" \
CPPFLAGS="$(filter-out -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64,$(TARGET_CPPFLAGS))" \
./configure \
--target=$(GNU_TARGET_NAME) \
--
1.8.5.5
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