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package/grpc: work around gcc bug 85180

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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 grpc with optimization but not when building
with -O0. To work around this, if BR2_TOOLCHAIN_HAS_GCC_BUG_85180=y we
force using -O0. Doing this let's optimize already present
CFLAGS/CXXFLAGS tweaking by introducing GRPC_CFLAGS and GRPC_CXXFLAGS
variable.

Fixes:
http://autobuild.buildroot.net/results/6f3/6f301904002cdd50dc3a66fe782b04a05b116319/

Signed-off-by: Giulio Benetti <giulio.benetti@benettiengineering.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
This commit is contained in:
Giulio Benetti 2019-10-28 12:50:10 +01:00 committed by Arnout Vandecappelle (Essensium/Mind)
parent 83d7f5dfd1
commit 716f8b34c5
1 changed files with 14 additions and 3 deletions
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17
package/grpc/grpc.mk
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@ -33,14 +33,25 @@ ifeq ($(BR2_TOOLCHAIN_HAS_LIBATOMIC),y)
GRPC_CONF_OPTS += -DCMAKE_EXE_LINKER_FLAGS=-latomic
endif
GRPC_CFLAGS = $(TARGET_CFLAGS)
GRPC_CXXFLAGS = $(TARGET_CXXFLAGS)
# Set GPR_DISABLE_WRAPPED_MEMCPY otherwise build will fail on x86_64 with uclibc
# because grpc tries to link with memcpy@GLIBC_2.2.5
ifeq ($(BR2_x86_64):$(BR2_TOOLCHAIN_USES_GLIBC),y:)
GRPC_CONF_OPTS += \
-DCMAKE_C_FLAGS="$(TARGET_CFLAGS) -DGPR_DISABLE_WRAPPED_MEMCPY" \
-DCMAKE_CXX_FLAGS="$(TARGET_CXXFLAGS) -DGPR_DISABLE_WRAPPED_MEMCPY"
GRPC_CFLAGS += -DGPR_DISABLE_WRAPPED_MEMCPY
GRPC_CXXFLAGS += -DGPR_DISABLE_WRAPPED_MEMCPY
endif
ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
GRPC_CFLAGS += -O0
GRPC_CXXFLAGS += -O0
endif
GRPC_CONF_OPTS += \
-DCMAKE_C_FLAGS="$(GRPC_CFLAGS)" \
-DCMAKE_CXX_FLAGS="$(GRPC_CXXFLAGS)"
HOST_GRPC_CONF_OPTS = \
-D_gRPC_CARES_LIBRARIES=cares \
-DgRPC_CARES_PROVIDER=none \