crossgcc: Fix compilation on Clang systems
Most cross compilers fail to compile on systems with Clang being the
default compiler (OS X and some BSDs). Clang dislikes some of GCC's
autogenerated code. We also missed switching CFLAGS to CXXFLAGS when GCC
switched to C++ compilation per default.
Change-Id: I87caa1a15982c431048aa79748ea7ef655a9a3a1
Signed-off-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-on: https://review.coreboot.org/14232
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index 525b574..96e4c19 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -18,8 +18,8 @@
cd $(dirname $0)
-CROSSGCC_DATE="March 21st, 2016"
-CROSSGCC_VERSION="1.37"
+CROSSGCC_DATE="April 3rd, 2016"
+CROSSGCC_VERSION="1.38"
# default settings
PACKAGE=GCC
@@ -453,13 +453,20 @@
build_GCC() {
+ # Work around crazy code generator in GCC that confuses CLANG.
+ $CC --version | grep clang &>/dev/null &&
+ HOSTCFLAGS="$HOSTCFLAGS -fbracket-depth=1024"
+
# GCC does not honor HOSTCFLAGS at all. CFLAGS are used for
# both target and host object files.
# There's a work-around called CFLAGS_FOR_BUILD and CFLAGS_FOR_TARGET
# but it does not seem to work properly. At least the host library
# libiberty is not compiled with CFLAGS_FOR_BUILD.
+ # Also set the CXX version of the flags because GCC is now compiled
+ # using C++.
CC="$CC" CFLAGS_FOR_TARGET="-O2 -Dinhibit_libc" CFLAGS="$HOSTCFLAGS" \
- CFLAGS_FOR_BUILD="$HOSTCFLAGS" ../gcc-${GCC_VERSION}/configure \
+ CFLAGS_FOR_BUILD="$HOSTCFLAGS" CXXFLAGS="$HOSTCFLAGS" \
+ CXXFLAGS_FOR_BUILD="$HOSTCFLAGS" ../gcc-${GCC_VERSION}/configure \
--prefix=$TARGETDIR --libexecdir=$TARGETDIR/lib \
--target=${TARGETARCH} --disable-werror --disable-shared \
--enable-lto --enable-plugins --enable-gold --enable-ld=default \