From 590d8b3f0739303158fe902fe5bd3766adeafdb4 Mon Sep 17 00:00:00 2001
From: David Welch <dwelch@dwelch.com>
Date: Mon, 28 May 2012 15:19:01 -0400
Subject: [PATCH] adding gnu toolchain build script, to build your own cross
 compiler

---
 buildgcc/README    | 13 +++++++++++++
 buildgcc/build_gcc | 39 +++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)
 create mode 100644 buildgcc/README
 create mode 100755 buildgcc/build_gcc

diff --git a/buildgcc/README b/buildgcc/README
new file mode 100644
index 0000000..21829ac
--- /dev/null
+++ b/buildgcc/README
@@ -0,0 +1,13 @@
+
+A script for building your own gnu toolchain for ARM.
+
+Derived directly from the same script at the mpx project at opencores.org
+
+Keep or change the PREFIX in the script to a path where you want the
+binary to end up.
+
+sudo ./build_gcc
+
+then put whatever you had in your prefix/bin in the path.  The default
+gnuarm would mean /gnuarm/bin goes in the PATH.
+
diff --git a/buildgcc/build_gcc b/buildgcc/build_gcc
new file mode 100755
index 0000000..b90c012
--- /dev/null
+++ b/buildgcc/build_gcc
@@ -0,0 +1,39 @@
+
+# Usage
+# sudo ./build_gcc
+
+# Setup vars
+export TARGET=arm-none-eabi
+export PREFIX=/gnuarm
+export PATH=$PATH:$PREFIX/bin
+
+rm -rf build-*
+rm -rf gcc-*
+rm -rf binutils-*
+
+# Get archives
+wget http://ftp.gnu.org/gnu/binutils/binutils-2.22.tar.bz2
+wget http://ftp.gnu.org/gnu/gcc/gcc-4.7.0/gcc-4.7.0.tar.bz2
+
+# Extract archives
+bzip2 -dc binutils-2.22.tar.bz2 | tar -xf -
+bzip2 -dc gcc-4.7.0.tar.bz2 | tar -xf -
+
+# Build binutils
+mkdir build-binutils
+cd build-binutils
+../binutils-2.22/configure --target=$TARGET --prefix=$PREFIX
+make all
+make install
+
+# Build GCC
+mkdir ../build-gcc
+cd ../build-gcc
+../gcc-4.7.0/configure --target=$TARGET --prefix=$PREFIX --without-headers --with-newlib  --with-gnu-as --with-gnu-ld
+make all-gcc
+make install-gcc
+
+# Build libgcc.a
+make all-target-libgcc CFLAGS_FOR_TARGET="-g -O2"
+make install-target-libgcc
+