bootstrap the musl-libc gcc cross compiler and use it to build everything except coreboot

bootstrap

@@ -0,0 +1,25 @@
+#!/bin/sh
+# Download and build the musl-libc cross compiler.
+# This should be worked around eventually to use the coreboot
+# cross compile suite that we've already built, but for now
+# we'll download yet another copy of gcc...
+
+PWD="`dirname $0`"
+
+die() { echo >&2 "$@"; exit 1; }
+
+if [ -d build/musl-cross ]; then
+	die "cross compiler already built?"
+fi
+
+cd build
+hg clone https://bitbucket.org/GregorR/musl-cross \
+	|| die "clone failed"
+
+cd musl-cross
+patch -p1 < ../../patches/musl-cross.patch \
+	|| die "patch of configuration failed!"
+
+export CC_BASE_PREFIX="$PWD/crossgcc"
+./build.sh \
+	|| die "compiler build failed!"

modules/linux

@@ -11,7 +11,15 @@ linux-4.9_hash := 029098dcffab74875e086ae970e3828456838da6e0ba22ce3f64ef764f3d7f
 
 linux_hash := $(linux-$(linux_version)_hash)
 
-linux_configure := $(MAKE) oldconfig
+linux_configure := \
+	$(MAKE) \
+		CROSS_COMPILE=$(pwd)/crossgcc/x86_64-linux-musl/bin/x86_64-linux-musl- \
+		oldconfig \
+
 linux_output := arch/x86/boot/bzImage
 linux_config := linux.config
-linux_target := -j 8 bzImage
+
+linux_target := \
+	CROSS_COMPILE=$(pwd)/crossgcc/x86_64-linux-musl/bin/x86_64-linux-musl- \
+	-j 8 \
+	bzImage

modules/musl

@@ -18,7 +18,13 @@ musl_output := $(INSTALL)/bin/musl-gcc
 musl_configure := ./configure \
 	--prefix="$(INSTALL)" \
 	--syslibdir="/lib" \
+	--enable-gcc-wrapper \
+	--enable-shared \
+	CC=$(HOME)/heads/crossgcc/x86_64-linux-musl/bin/x86_64-musl-linux-gcc
+
+
 
 musl_target := -j 8 install
+#musl_target :=  install
 
 musl_depends := kernel-headers

patches/musl-cross.patch

@@ -0,0 +1,40 @@
+diff -r c004067a7b34 config.sh
+--- a/config.sh	Sun Oct 02 20:51:04 2016 -0400
++++ b/config.sh	Fri Jan 27 17:47:25 2017 -0500
+@@ -1,13 +1,15 @@
+ # ARCH will be auto-detected as the host if not specified
+ #ARCH=i486
+-#ARCH=x86_64
++ARCH=x86_64
+ #ARCH=powerpc
+ #ARCH=arm
+ #ARCH=microblaze
+ #ARCH=mips
+ #ARCH=mipsel
+ 
+-CC_BASE_PREFIX=/opt/cross
++if [ -z "$CC_BASE_PREFIX" ]; then
++	CC_BASE_PREFIX=$HOME/heads/install
++fi
+ 
+ # If you use arm, you may need more fine-tuning:
+ # arm hardfloat v7
+@@ -24,3 +26,6 @@
+ 
+ # Enable this to build the bootstrap gcc (thrown away) without optimization, to reduce build time
+ GCC_STAGE1_NOOPT=1
++
++# Build GMP, MPFR and MPC
++GCC_BUILTIN_PREREQS=yes
+diff -r c004067a7b34 defs.sh
+--- a/defs.sh	Sun Oct 02 20:51:04 2016 -0400
++++ b/defs.sh	Fri Jan 27 17:47:25 2017 -0500
+@@ -46,7 +46,7 @@
+ 
+ # musl can optionally be checked out from GIT, in which case MUSL_VERSION must
+ # be set to a git tag and MUSL_GIT set to yes in config.sh
+-MUSL_DEFAULT_VERSION=1.1.12
++MUSL_DEFAULT_VERSION=1.1.15
+ MUSL_GIT_VERSION=615629bd6fcd6ddb69ad762e679f088c7bd878e2
+ MUSL_GIT_REPO='git://repo.or.cz/musl.git'
+ MUSL_VERSION="$MUSL_DEFAULT_VERSION"