package/glibmm: work around gcc bug 85180

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 glibmm with optimization but not when building
with -O0. To work around this, if BR2_TOOLCHAIN_HAS_GCC_BUG_85180=y,
we force using -O0.

Fixes:

  http://autobuild.buildroot.net/results/e196d77626b877dc3454d21febe20a04877c02a9/

Signed-off-by: Giulio Benetti <giulio.benetti@micronovasrl.com>
[Thomas: tweak CXXFLAGS logic, improve commit log]
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>

diff --git a/package/glibmm/glibmm.mk b/package/glibmm/glibmm.mk
index 71f1dfd36f31d29eb6c89ff79dbdb372305edd1f..a0abb7a49df45daa5e53311a33db3f596cfa5bd0 100644 (file)
--- a/package/glibmm/glibmm.mk
+++ b/package/glibmm/glibmm.mk
@@ -13,4 +13,12 @@ GLIBMM_SITE = http://ftp.gnome.org/pub/gnome/sources/glibmm/$(GLIBMM_VERSION_MAJ
 GLIBMM_INSTALL_STAGING = YES
 GLIBMM_DEPENDENCIES = libglib2 libsigc host-pkgconf
 
+GLIBMM_CXXFLAGS = $(TARGET_CXXFLAGS)
+
+ifeq ($(BR2_TOOLCHAIN_HAS_GCC_BUG_85180),y)
+GLIBMM_CXXFLAGS += -O0
+endif
+
+GLIBMM_CONF_ENV += CXXFLAGS="$(TARGET_CXXFLAGS)"
+
 $(eval $(autotools-package))