From 3008bb6945adcd78654ebdae73f1fbd4796f13c9 Mon Sep 17 00:00:00 2001
From: Trammell Hudson <trammell.hudson@twosigma.com>
Date: Tue, 31 Jan 2017 12:45:42 -0500
Subject: [PATCH] Make musl-cross a normal Heads module.

This merges pull request #99 by @blackwellops and removes
the ./bootstrap script since the musl-cross can be built as
part of the normal dependency tree.
---
 README.md          |  4 +---
 bootstrap          | 28 ----------------------------
 modules/musl       |  2 +-
 modules/musl-cross | 14 ++++++++++++++
 4 files changed, 16 insertions(+), 32 deletions(-)
 delete mode 100755 bootstrap
 create mode 100644 modules/musl-cross

diff --git a/README.md b/README.md
index 708381dc..2dd7cc09 100644
--- a/README.md
+++ b/README.md
@@ -28,9 +28,7 @@ Building heads
 In order to build reproducible firmware images, Heads builds a specific
 version of gcc and uses it to compile the Linux kernel and various tools
 that go into the initrd.  Unfortunately this means the first step is a
-little slow...  After cloning the tree, cd into it and run `./bootstrap`
-to download and build binutils, gcc and all of their dependencies into
-`./crossgcc/`.
+little slow since it will clone the `musl-cross` tree and build gcc... 
 
 Once that is done, the top level `Makefile` will handle most of the
 remaining details -- it downloads the various packages, verifies the
diff --git a/bootstrap b/bootstrap
deleted file mode 100755
index 267d084d..00000000
--- a/bootstrap
+++ /dev/null
@@ -1,28 +0,0 @@
-#!/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...
-
-DIRNAME="`dirname $0`"
-BASE="`cd "$DIRNAME" ; /bin/pwd `"
-
-die() { echo >&2 "$@"; exit 1; }
-
-if [ ! -d build/musl-cross ]; then
-	cd build
-	git clone https://github.com/GregorR/musl-cross.git \
-		|| die "clone failed"
-
-	cd musl-cross
-	patch -p1 < ../../patches/musl-cross.patch \
-		|| die "patch of configuration failed!"
-else
-	cd build/musl-cross
-fi
-
-export CC_BASE_PREFIX="$BASE/crossgcc"
-echo "export CC_BASE_PREFIX='$CC_BASE_PREFIX'"
-
-./build.sh \
-	|| die "compiler build failed!"
diff --git a/modules/musl b/modules/musl
index 8f51310c..b34a540c 100644
--- a/modules/musl
+++ b/modules/musl
@@ -27,4 +27,4 @@ musl_configure := ./configure \
 musl_target := -j 8 install
 #musl_target :=  install
 
-musl_depends := kernel-headers
+musl_depends := kernel-headers musl-cross
diff --git a/modules/musl-cross b/modules/musl-cross
new file mode 100644
index 00000000..a1814dfe
--- /dev/null
+++ b/modules/musl-cross
@@ -0,0 +1,14 @@
+modules += musl-cross
+
+musl-cross_version := git
+musl-cross_dir := musl-cross-$(musl-cross_version)
+musl-cross_repo := https://github.com/GregorR/musl-cross
+
+musl-cross_output := $(pwd)/crossgcc/x86_64-linux-musl/bin/x86_64-linux-musl-gcc
+
+musl-cross_configure := \
+	echo > Makefile -n \
+	'$(musl-cross_output):\n\tCC_BASE_PREFIX="$(pwd)/crossgcc" ./build.sh'
+
+musl-cross_target :=
+