[Buildroot] [PATCH 1/1] package/opencv3: fix build due to gcc bug 68485

[Fabrice Fontaine]

Fixes:
 - http://autobuild.buildroot.org/results/c78eac84d1c5a6702e7759cd5364da1c3e399b4b

Signed-off-by: Fabrice Fontaine <fontaine.fabrice at gmail.com>
---
 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