[Buildroot] [PATCH v2, 1/1] package/opencv3: fix build due to gcc bug 68485
Fabrice Fontaine
fontaine.fabrice at gmail.com
Fri May 31 16:26:45 UTC 2019
With Microblaze Gcc version <= 9.x the build fails due to gcc bug 68485:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=68485. The bug show up when
building opencv3 with optimization but not when building with -O0. To
work around this, if BR2_TOOLCHAIN_HAS_GCC_BUG_68458=y, we force using
-O0.
Fixes:
- http://autobuild.buildroot.org/results/c78eac84d1c5a6702e7759cd5364da1c3e399b4b
Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
Changes v1 -> v2 (after review of Giulio Benetti):
- Improve commit log
package/opencv3/opencv3.mk | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/package/opencv3/opencv3.mk b/package/opencv3/opencv3.mk
index 292ce81432..49b29d9f1e 100644
--- a/package/opencv3/opencv3.mk
+++ b/package/opencv3/opencv3.mk
@@ -23,6 +23,10 @@ ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_64735),y)
OPENCV3_CXXFLAGS += -DCV__EXCEPTION_PTR=0
endif
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
+OPENCV3_CXXFLAGS += -O0
+endif
+
# OpenCV component options
OPENCV3_CONF_OPTS += \
-DCMAKE_CXX_FLAGS="$(OPENCV3_CXXFLAGS)" \
--
2.20.1
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