[Buildroot] [PATCH 2/2] package/boost: work around gcc bug 85180

Giulio Benetti giulio.benetti at micronovasrl.com
Tue Jun 4 15:49:55 UTC 2019


With Microblaze Gcc version < 8.x the build hangs due to gcc bug
85180: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85180. The bug
shows up when building boost with optimization but not when building
with -O0. To work around this, if BR2_TOOLCHAIN_HAS_GCC_BUG_85180=y we
force using -O0.

Signed-off-by: Giulio Benetti <giulio.benetti at micronovasrl.com>
---
 package/boost/boost.mk | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/package/boost/boost.mk b/package/boost/boost.mk
index a2d8395fd4..04869ed685 100644
--- a/package/boost/boost.mk
+++ b/package/boost/boost.mk
@@ -50,6 +50,10 @@ BOOST_WITHOUT_FLAGS += $(if $(BR2_PACKAGE_BOOST_WAVE),,wave)
 
 BOOST_TARGET_CXXFLAGS = $(TARGET_CXXFLAGS)
 
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
+BOOST_TARGET_CXXFLAGS += -O0
+endif
+
 BOOST_FLAGS = --with-toolset=gcc
 
 ifeq ($(BR2_PACKAGE_ICU),y)
-- 
2.17.1



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