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Pass CXXFLAGS as CXXFLAGS_FOR_BUILD to stage1.
Fixes build failure when CXXFLAGS contains
TARGET-specific flags.
Tested on x86_64-pc-linux-gnu host as:
# CFLAGS='-O2 -mfpu=neon-vfpv4' CXXFLAGS='-O2 -mfpu=neon-vfpv4' \
armv7a-unknown-linux-gnueabihf-emerge -v1 sys-devel/gcc --quiet-build=n
Fix by Peter Levine.
https://bugs.gentoo.org/581406
--- a/Makefile.in
+++ b/Makefile.in
@@ -176,6 +176,7 @@
# built for the build system to override those in BASE_FLAGS_TO_PASS.
EXTRA_BUILD_FLAGS = \
CFLAGS="$(CFLAGS_FOR_BUILD)" \
+ CXXFLAGS="$(CXXFLAGS_FOR_BUILD)" \
LDFLAGS="$(LDFLAGS_FOR_BUILD)"
# This is the list of directories to built for the host system.
@@ -842,6 +843,7 @@
"CC_FOR_BUILD=$(CC_FOR_BUILD)" \
"CFLAGS_FOR_BUILD=$(CFLAGS_FOR_BUILD)" \
"CXX_FOR_BUILD=$(CXX_FOR_BUILD)" \
+ "CXXFLAGS_FOR_BUILD=$(CXXFLAGS_FOR_BUILD)" \
"EXPECT=$(EXPECT)" \
"FLEX=$(FLEX)" \
"INSTALL=$(INSTALL)" \
--- a/Makefile.tpl
+++ b/Makefile.tpl
@@ -179,6 +179,7 @@
# built for the build system to override those in BASE_FLAGS_TO_PASS.
EXTRA_BUILD_FLAGS = \
CFLAGS="$(CFLAGS_FOR_BUILD)" \
+ CXXFLAGS="$(CXXFLAGS_FOR_BUILD)" \
LDFLAGS="$(LDFLAGS_FOR_BUILD)"
# This is the list of directories to built for the host system.
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