Add cross compilation scripts

.gitignore

@@ -1,24 +1,2 @@
-# Compiled Object files, Static and Dynamic libs (Shared Objects)
-*.o
-*.a
-*.so
-
-# Folders
-_obj
-_test
-
-# Architecture specific extensions/prefixes
-*.[568vq]
-[568vq].out
-
-*.cgo1.go
-*.cgo2.c
-_cgo_defun.c
-_cgo_gotypes.go
-_cgo_export.*
-
-_testmain.go
-
-*.exe
-*.test
-*.prof
+.DS_Store
+/dist

Dockerfile

@@ -1,19 +1,39 @@
-FROM alpine:edge
+FROM golang:1.5.1
 
-ENV GOPATH /go
-ENV PATH /go/bin:$PATH
+ENV CGO_ENABLED 1
 
-# install build dependencies
-RUN echo "http://dl-4.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories && \
-	apk add -U --no-progress alpine-sdk go go-tools
+# i386 cross compilation
+RUN dpkg --add-architecture i386 && \
+	apt-get update && \
+	apt-get install -y libc6-dev-i386 && \
+	rm -rf /var/lib/apt/lists/*
+
+# osx cross compilation
+# ref: https://github.com/karalabe/xgo/blob/master/docker/base/Dockerfile
+ENV OSX_SDK_FILE MacOSX10.9.sdk.tar.xz
+ENV OSX_SDK_SHA256 ac7ccfd8dee95d9811ce50cdc154c8ec7181c51652b5a434445475af62c4fedb
+RUN cd /opt && \
+	git clone https://github.com/tpoechtrager/osxcross.git && \
+	cd osxcross && \
+	sed -i -e 's|-march=native||g' ./build_clang.sh ./wrapper/build.sh && \
+	apt-get update && \
+	./tools/get_dependencies.sh && \
+	rm -rf /var/lib/apt/lists/* && \
+	curl -fSL -o ./tarballs/$OSX_SDK_FILE \
+		https://s3.amazonaws.com/andrew-osx-sdks/$OSX_SDK_FILE && \
+	echo "$OSX_SDK_SHA256 ./tarballs/$OSX_SDK_FILE" | sha256sum -c - && \
+	UNATTENDED=1 OSX_VERSION_MIN=10.6 ./build.sh
+ENV PATH /opt/osxcross/target/bin:$PATH
+
+# development dependencies
 RUN go get \
 	github.com/golang/lint/golint \
 	github.com/kisielk/errcheck \
 	golang.org/x/tools/cmd/vet
 
 # copy source files
-COPY . /go/src/github.com/adrianmacneil/dbmate
-WORKDIR /go/src/github.com/adrianmacneil/dbmate
+COPY . $GOPATH/src/github.com/adrianmacneil/dbmate
+WORKDIR $GOPATH/src/github.com/adrianmacneil/dbmate
 
 # build
 RUN go get -d -t -v

Dockerfile.build

@@ -0,0 +1,32 @@
+# this container is used for compiling dbmate against multiple targets
+FROM golang:1.5.1
+
+ENV CGO_ENABLED 1
+
+# i386 cross compilation
+RUN dpkg --add-architecture i386 && \
+	apt-get update && \
+	apt-get install -y libc6-dev-i386 && \
+	rm -rf /var/lib/apt/lists/*
+
+# osx cross compilation
+# ref: https://github.com/karalabe/xgo/blob/master/docker/base/Dockerfile
+ENV OSX_SDK_VERSION 10.9
+RUN cd /opt && \
+	git clone https://github.com/tpoechtrager/osxcross.git && \
+	cd osxcross && \
+	sed -i -e 's|-march=native||g' ./build_clang.sh ./wrapper/build.sh && \
+	apt-get update && \
+	./tools/get_dependencies.sh && \
+	rm -rf /var/lib/apt/lists/* && \
+	curl -fSL -o ./tarballs/MacOSX${OSX_SDK_VERSION}.sdk.tar.xz \
+		https://s3.amazonaws.com/andrew-osx-sdks/MacOSX${OSX_SDK_VERSION}.sdk.tar.xz && \
+	UNATTENDED=1 OSX_VERSION_MIN=10.6 ./build.sh
+ENV PATH /opt/osxcross/target/bin:$PATH
+
+# copy source files
+COPY . $GOPATH/src/github.com/adrianmacneil/dbmate
+WORKDIR $GOPATH/src/github.com/adrianmacneil/dbmate
+
+# fetch dependencies
+RUN go get -d -t -v

Makefile

@@ -1,8 +1,8 @@
 DOCKER := docker-compose run dbmate
 
-all: build lint test
+all: container lint test build
 
-build:
+container:
 	docker-compose build
 
 lint:
@@ -12,3 +12,6 @@ lint:
 
 test:
 	$(DOCKER) go test -v
+
+build:
+	docker-compose run dbmate ./build.sh

build.sh

@@ -0,0 +1,18 @@
+#!/bin/sh
+# this script is intended to run inside the docker container
+# e.g. docker-compose run dbmate ./build.sh
+
+set -ex
+
+BUILD_FLAGS="-ldflags -s"
+
+rm -rf dist
+
+GOOS=linux GOARCH=386 go build $BUILD_FLAGS \
+  -o dist/dbmate-linux-i386
+GOOS=linux GOARCH=amd64 go build $BUILD_FLAGS \
+  -o dist/dbmate-linux-amd64
+GOOS=darwin GOARCH=386 CC=o32-clang CXX=o32-clang++ go build $BUILD_FLAGS \
+  -o dist/dbmate-osx-i386
+GOOS=darwin GOARCH=amd64 CC=o64-clang CXX=o64-clang++ go build $BUILD_FLAGS \
+  -o dist/dbmate-osx-amd64