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authorGravatar Michael Nosthoff <buildroot@heine.tech>2020-09-15 18:11:07 +0200
committerGravatar Yann E. MORIN <yann.morin.1998@free.fr>2020-09-19 10:17:33 +0200
commit19dfe7f6e78e4a0d30464ecec23576a4774ee02b (patch)
treeed1c85344776c9fbe147d9be86bd1e18ee139625
parent060275b6834423bfa76452328264618a4f77e47e (diff)
downloadbuildroot-19dfe7f6e78e4a0d30464ecec23576a4774ee02b.tar.gz
buildroot-19dfe7f6e78e4a0d30464ecec23576a4774ee02b.tar.bz2
package/grpc: fix build on ubuntu gcc 4.8
gcc 4.8 on ubuntu 14.04 does some broken optimization at link-time which causes grpc to create a grpc_cpp_plugin which quits because of a failing assertion. The created plugin is itself used during compilation which lets the build fail. With the added -Wl,--no-as-needed flag the LTO is disabled and grpc compiles successfully. fixes: - http://autobuild.buildroot.net/results/b554f6f2fb66892273f7520ad6e36923557b229e - http://autobuild.buildroot.net/results/3ebb2880b9b3fd5154979016391dde897e2c039c - http://autobuild.buildroot.net/results/c2078e821e0728fe980be2c849c25d82e791a4c2 Signed-off-by: Michael Nosthoff <buildroot@heine.tech> [yann.morin.1998@free.fr: rewrap the comment] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
-rw-r--r--package/grpc/grpc.mk8
1 files changed, 8 insertions, 0 deletions
diff --git a/package/grpc/grpc.mk b/package/grpc/grpc.mk
index 2114f98e40..613f45dacc 100644
--- a/package/grpc/grpc.mk
+++ b/package/grpc/grpc.mk
@@ -72,5 +72,13 @@ HOST_GRPC_CONF_OPTS = \
-DgRPC_ZLIB_PROVIDER=package \
-DgRPC_ABSL_PROVIDER=package
+# With gcc 4.8 (at least on ubuntu) there is a bug in LTO which breaks
+# the linkage of the grpc_cpp_plugin with libprotobuf and pthread. This
+# additional flag fixes this.
+ifeq ($(BR2_HOST_GCC_AT_LEAST_4_9),)
+HOST_GRPC_CONF_OPTS += \
+ -DCMAKE_EXE_LINKER_FLAGS="$(HOST_LDFLAGS) -Wl,--no-as-needed"
+endif
+
$(eval $(cmake-package))
$(eval $(host-cmake-package))