2 files changed, 63 insertions, 0 deletions
diff --git a/build/unix/build-gcc/PR64905.patch b/build/unix/build-gcc/PR64905.patch
new file mode 100644
index 000000000..b86c99b9f
--- /dev/null
+++ b/build/unix/build-gcc/PR64905.patch
@@ -0,0 +1,11 @@
+--- trunk/gcc/lra-eliminations.c	2015/02/04 20:00:48	220415
++++ trunk/gcc/lra-eliminations.c	2015/02/04 20:02:21	220416
+@@ -182,6 +182,8 @@
+   if (! value
+       && ep->from == FRAME_POINTER_REGNUM && ep->to == STACK_POINTER_REGNUM)
+     frame_pointer_needed = 1;
++  if (!frame_pointer_needed)
++    REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) = 0;
+ }
+ 
+ /* Map: eliminable "from" register -> its current elimination,
diff --git a/build/unix/build-gcc/build-gcc.sh b/build/unix/build-gcc/build-gcc.sh
new file mode 100755
index 000000000..df3bc5dfd
--- /dev/null
+++ b/build/unix/build-gcc/build-gcc.sh
@@ -0,0 +1,52 @@
+#!/bin/bash
+
+gcc_version=4.8.5
+binutils_version=2.25.1
+this_path=$(readlink -f $(dirname $0))
+make_flags='-j12'
+
+root_dir="$1"
+if [ -z "$root_dir" -o ! -d "$root_dir" ]; then
+  root_dir=$(mktemp -d)
+fi
+cd $root_dir
+
+if test -z $TMPDIR; then
+  TMPDIR=/tmp/
+fi
+
+wget -c -P $TMPDIR ftp://ftp.gnu.org/gnu/binutils/binutils-$binutils_version.tar.bz2 || exit 1
+tar xjf $TMPDIR/binutils-$binutils_version.tar.bz2
+mkdir binutils-objdir
+cd binutils-objdir
+# gold is disabled because we don't use it on automation, and also we ran into
+# some issues with it using this script in build-clang.py.
+../binutils-$binutils_version/configure --prefix /tools/gcc/ --disable-gold --enable-plugins --disable-nls || exit 1
+make $make_flags || exit 1
+make install $make_flags DESTDIR=$root_dir || exit 1
+cd ..
+
+case "$gcc_version" in
+*-*)
+  wget -c -P $TMPDIR ftp://gcc.gnu.org/pub/gcc/snapshots/$gcc_version/gcc-$gcc_version.tar.bz2 || exit 1
+  ;;
+*)
+  wget -c -P $TMPDIR ftp://ftp.gnu.org/gnu/gcc/gcc-$gcc_version/gcc-$gcc_version.tar.bz2 || exit 1
+  ;;
+esac
+tar xjf $TMPDIR/gcc-$gcc_version.tar.bz2
+cd gcc-$gcc_version
+
+./contrib/download_prerequisites
+
+patch -p1 < "${this_path}/PR64905.patch" || exit 1
+
+cd ..
+mkdir gcc-objdir
+cd gcc-objdir
+../gcc-$gcc_version/configure --prefix=/tools/gcc --enable-languages=c,c++  --disable-nls --disable-gnu-unique-object --enable-__cxa_atexit --with-arch-32=pentiumpro || exit 1
+make $make_flags || exit 1
+make $make_flags install DESTDIR=$root_dir || exit 1
+
+cd $root_dir/tools
+tar caf $root_dir/gcc.tar.xz gcc/