From 4d065df37636a39a35abb414162d9ad98c6228ff Mon Sep 17 00:00:00 2001
From: Pavol Rusnak <stick@gk2.sk>
Date: Tue, 9 Jan 2018 21:44:42 +0100
Subject: [PATCH] build: add possibility to build ARM toolchain from source

---
 Dockerfile            | 15 +++++++++++----
 Dockerfile.gcc_source | 41 +++++++++++++++++++++++++++++++++++++++++
 build-docker.sh       |  7 +++++++
 3 files changed, 59 insertions(+), 4 deletions(-)
 create mode 100644 Dockerfile.gcc_source

diff --git a/Dockerfile b/Dockerfile
index 18b21a3b..3788ad73 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,14 +5,21 @@ FROM debian:9
 # install build tools and dependencies
 
 RUN apt-get update && apt-get install -y \
-    build-essential wget git python3-pip \
-    gcc-multilib
+    build-essential wget git python3-pip gcc-multilib
 
-# download and setup toolchain
+# download toolchain
 
 ENV TOOLCHAIN_SHORTVER=7-2017q4
 ENV TOOLCHAIN_LONGVER=gcc-arm-none-eabi-7-2017-q4-major
-RUN cd /opt && wget https://developer.arm.com/-/media/Files/downloads/gnu-rm/$TOOLCHAIN_SHORTVER/$TOOLCHAIN_LONGVER-linux.tar.bz2 && tar xfj $TOOLCHAIN_LONGVER-linux.tar.bz2
+ENV TOOLCHAIN_FLAVOR=linux
+ENV TOOLCHAIN_URL=https://developer.arm.com/-/media/Files/downloads/gnu-rm/$TOOLCHAIN_SHORTVER/$TOOLCHAIN_LONGVER-$TOOLCHAIN_FLAVOR.tar.bz2
+
+# extract toolchain
+
+RUN cd /opt && wget $TOOLCHAIN_URL && tar xfj $TOOLCHAIN_LONGVER-$TOOLCHAIN_FLAVOR.tar.bz2
+
+# setup toolchain
+
 ENV PATH=/opt/$TOOLCHAIN_LONGVER/bin:$PATH
 
 # install python tools
diff --git a/Dockerfile.gcc_source b/Dockerfile.gcc_source
new file mode 100644
index 00000000..4a77d013
--- /dev/null
+++ b/Dockerfile.gcc_source
@@ -0,0 +1,41 @@
+# initialize from the image
+
+FROM debian:9
+
+# install build tools and dependencies
+
+RUN apt-get update && apt-get install -y \
+    build-essential wget git python3-pip gcc-multilib \
+    autoconf autogen bison dejagnu flex flip gawk git gperf gzip nsis openssh-client p7zip-full perl python-dev libisl-dev tcl tofrodos zip
+
+# download toolchain
+
+ENV TOOLCHAIN_SHORTVER=7-2017q4
+ENV TOOLCHAIN_LONGVER=gcc-arm-none-eabi-7-2017-q4-major
+ENV TOOLCHAIN_FLAVOR=src
+ENV TOOLCHAIN_URL=https://developer.arm.com/-/media/Files/downloads/gnu-rm/$TOOLCHAIN_SHORTVER/$TOOLCHAIN_LONGVER-$TOOLCHAIN_FLAVOR.tar.bz2
+
+# extract toolchain
+
+RUN cd /opt && wget $TOOLCHAIN_URL && tar xfj $TOOLCHAIN_LONGVER-$TOOLCHAIN_FLAVOR.tar.bz2
+
+# build toolchain
+
+RUN cd /opt/$TOOLCHAIN_LONGVER && ./install-sources.sh --skip_steps=mingw32,manual
+RUN cd /opt/$TOOLCHAIN_LONGVER && ./build-prerequisites.sh  --skip_steps=mingw32,manual
+RUN cd /opt/$TOOLCHAIN_LONGVER && ./build-toolchain.sh  --skip_steps=mingw32,manual
+
+# setup toolchain
+
+ENV PATH=/opt/$TOOLCHAIN_LONGVER/bin:$PATH
+
+# install python tools
+
+RUN pip3 install click pyblake2 scons
+RUN pip3 install --no-deps git+https://github.com/trezor/python-trezor.git@master
+
+# workarounds for weird default install
+
+RUN ln -s python3 /usr/bin/python
+RUN ln -s dist-packages /usr/local/lib/python3.5/site-packages
+ENV LC_ALL=C.UTF-8 LANG=C.UTF-8
diff --git a/build-docker.sh b/build-docker.sh
index 3dc664a0..c4e8a829 100755
--- a/build-docker.sh
+++ b/build-docker.sh
@@ -5,6 +5,13 @@ IMAGE=trezor-core-build
 TAG=${1:-master}
 
 docker build -t $IMAGE .
+
+# use the following line instead of the above line
+# if you want to compile ARM toolchain from source
+# warning: very long compilation time!
+
+# docker build -t $IMAGE -f Dockerfile.gcc_source .
+
 docker run -t -v $(pwd)/build-docker:/build:z $IMAGE /bin/sh -c "\
 	git clone https://github.com/trezor/trezor-core && \
 	cd trezor-core && \