From 9141e87e24ae5928ab096dc3d1fe40be4dd5a6ef Mon Sep 17 00:00:00 2001
From: Frederik Carlier <frederik.carlier@quamotion.mobi>
Date: Wed, 3 Apr 2019 18:59:32 +0200
Subject: [PATCH] Add 32-bit arm (armhf) support

---
 .travis.yml                 |  8 ++++++++
 CMakeLists.arm.txt          |  6 ++++++
 Dockerfile.debian-arm       | 14 ++++++++++++++
 Dockerfile.ubuntu.16.04-arm | 17 +++++++++++++++++
 build.libgit2.sh            |  4 ++++
 5 files changed, 49 insertions(+)
 create mode 100644 CMakeLists.arm.txt
 create mode 100644 Dockerfile.debian-arm
 create mode 100644 Dockerfile.ubuntu.16.04-arm

diff --git a/.travis.yml b/.travis.yml
index 359cc59a..d2836741 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,6 +9,10 @@ matrix:
       dist: trusty
       sudo: required
       env: RID=linux-x64
+    - os: linux
+      dist: trusty
+      sudo: required
+      env: RID=ubuntu.16.04-arm
     - os: linux
       dist: trusty
       sudo: required
@@ -25,6 +29,10 @@ matrix:
       dist: trusty
       sudo: required
       env: RID=debian.9-x64
+    - os: linux
+      dist: trusty
+      sudo: required
+      env: RID=debian-arm
     - os: linux
       dist: trusty
       sudo: required
diff --git a/CMakeLists.arm.txt b/CMakeLists.arm.txt
new file mode 100644
index 00000000..4b11f14a
--- /dev/null
+++ b/CMakeLists.arm.txt
@@ -0,0 +1,6 @@
+SET(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_PROCESSOR arm)
+set(TARGET_ABI "linux-gnueabihf")
+
+SET(CMAKE_C_COMPILER   ${CMAKE_SYSTEM_PROCESSOR}-${TARGET_ABI}-gcc)
+SET(CMAKE_CXX_COMPILER ${CMAKE_SYSTEM_PROCESSOR}-${TARGET_ABI}-g++)
diff --git a/Dockerfile.debian-arm b/Dockerfile.debian-arm
new file mode 100644
index 00000000..7b13bf24
--- /dev/null
+++ b/Dockerfile.debian-arm
@@ -0,0 +1,14 @@
+FROM debian:9
+
+WORKDIR /nativebinaries
+COPY . /nativebinaries/
+
+RUN dpkg --add-architecture armhf
+
+RUN apt update \
+&& apt -y install cmake pkg-config \
+   crossbuild-essential-armhf \
+#   pkg-config-arm-linux-gnueabi \
+   libssl-dev:armhf
+
+CMD ["/bin/bash", "-c", "./build.libgit2.sh"]
diff --git a/Dockerfile.ubuntu.16.04-arm b/Dockerfile.ubuntu.16.04-arm
new file mode 100644
index 00000000..a07b559b
--- /dev/null
+++ b/Dockerfile.ubuntu.16.04-arm
@@ -0,0 +1,17 @@
+FROM ubuntu:16.04
+
+WORKDIR /nativebinaries
+COPY . /nativebinaries/
+
+RUN dpkg --add-architecture armhf \
+&& sed -i 's/deb/deb [arch=amd64]/g' /etc/apt/sources.list \
+&& echo "deb [arch=armhf] http://ports.ubuntu.com/ubuntu-ports xenial main universe" > /etc/apt/sources.list.d/armhf.list \
+&& echo "deb [arch=armhf] http://ports.ubuntu.com/ubuntu-ports xenial-updates main universe" > /etc/apt/sources.list.d/armhf-updates.list
+
+RUN apt update \
+&& apt -y install cmake pkg-config \
+   crossbuild-essential-armhf \
+   pkg-config-arm-linux-gnueabi \
+   libssl-dev:armhf
+
+CMD ["/bin/bash", "-c", "./build.libgit2.sh"]
diff --git a/build.libgit2.sh b/build.libgit2.sh
index 85f4c65c..cf3e2b44 100755
--- a/build.libgit2.sh
+++ b/build.libgit2.sh
@@ -9,6 +9,10 @@ pushd libgit2/build
 
 export _BINPATH=`pwd`
 
+if [[ $RID == *arm ]]; then
+	export TOOLCHAIN_FILE=/nativebinaries/CMakeLists.arm.txt
+fi
+
 if [[ $RID == *arm64 ]]; then
 	export TOOLCHAIN_FILE=/nativebinaries/CMakeLists.arm64.txt
 fi