[Buildroot] [PATCH] package/apitrace: fix build failure due to gcc bug 68485 and 85180

[Giulio Benetti <giulio.benetti@benettiengineering.com>]

The apitrace package exhibits gcc bug 68485 when built for the
Microblaze architecture with optimization enabled, which causes a build
failure. This is mainly due to 3rd party brotli embedded in apitrace
that already has been fixed in Buildroot as single package. After fixing
this bug, gcc bug 81580 showed off.

So, as done for other packages in Buildroot, work around this gcc bug by
setting optimization to -O0 if BR2_TOOLCHAIN_HAS_GCC_BUG_68485=y. And do
the same if BR2_TOOLCHAIN_HAS_GCC_BUG_85180=y as already done for other
packages.

Fixes:
http://autobuild.buildroot.net/results/a46/a46626cc50f07f41d831614306f556d346d31429/

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
---
 package/apitrace/apitrace.mk | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/package/apitrace/apitrace.mk b/package/apitrace/apitrace.mk
index e6f8a2b1c5..922c933f25 100644
--- a/package/apitrace/apitrace.mk
+++ b/package/apitrace/apitrace.mk
@@ -21,4 +21,20 @@ endif
 # Gui was never tested, so we prefer to explicitly disable it
 APITRACE_CONF_OPTS += -DENABLE_GUI=false
 
+APITRACE_CFLAGS = $(TARGET_CFLAGS)
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_68485),y)
+APITRACE_CFLAGS += -O0
+endif
+
+APITRACE_CONF_OPTS += -DCMAKE_C_FLAGS="$(APITRACE_CFLAGS)"
+
+APITRACE_CXXFLAGS = $(TARGET_CXXFLAGS)
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
+APITRACE_CXXFLAGS += -O0
+endif
+
+APITRACE_CONF_OPTS += -DCMAKE_CXX_FLAGS="$(APITRACE_CXXFLAGS)"
+
 $(eval $(cmake-package))
-- 
2.20.1