Configure travis to perform a 32-bit build

- Build targeting 32-bit with travis
- Code in `before_install`/`after_success` was moved to travis.sh since it
  provides greater flexibility for detecting the build matrix environment. This
  improves the build speed since we now install only what's necessary.
- Now clint has a dedicated travis worker

5 files changed, 60 insertions, 69 deletions

diff --git a/.travis.yml b/.travis.yml
index b0f2279fbb..25ab961ec4 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,11 +1,8 @@
 language: c
-compiler:
-  - clang
-  - gcc
-before_install:
-  - ./scripts/clint.sh
-  - sudo ./scripts/travis-setup.sh 
+env:
+  - TRAVIS_BUILD_TYPE=clang/asan
+  - TRAVIS_BUILD_TYPE=gcc/ia32
+  - TRAVIS_BUILD_TYPE=gcc/unittest
+  - TRAVIS_BUILD_TYPE=clint
 script:
   - ./scripts/travis.sh
-after_success:
-  - coveralls --encoding iso-8859-1
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4e88157c7b..cd7e6936e4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,11 @@
 cmake_minimum_required (VERSION 2.8.7)
 project (NEOVIM)
 
+set(CMAKE_SYSTEM_PROCESSOR i386)
+set(CMAKE_SYSTEM_LIBRARY_PATH /lib32 /usr/lib32 /usr/local/lib32)
+set(FIND_LIBRARY_USE_LIB64_PATHS OFF)
+set(CMAKE_IGNORE_PATH /lib /usr/lib /usr/local/lib)
+
 # Point CMake at any custom modules we may ship
 set(CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
 
diff --git a/cmake/i386-linux-gnu.toolchain.cmake b/cmake/i386-linux-gnu.toolchain.cmake
new file mode 100644
index 0000000000..5b3e02d18d
--- /dev/null
+++ b/cmake/i386-linux-gnu.toolchain.cmake
@@ -0,0 +1,5 @@
+set(CMAKE_SYSTEM_PROCESSOR i386)
+set(CMAKE_SYSTEM_NAME Linux)
+set(CMAKE_SYSTEM_VERSION gnu)
+set(CMAKE_C_COMPILER gcc)
+set(CMAKE_C_COMPILER_ARG1 "-m32")
diff --git a/scripts/travis-setup.sh b/scripts/travis-setup.sh
deleted file mode 100755
index 1520777841..0000000000
--- a/scripts/travis-setup.sh
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/sh -e
-
-# Despite the logs, CC isn't being exported at before_install time in Travis.
-# So the following check cannot be used to avoid the download.
-# [ "$CC" != "clang" ] && exit
-
-echo "Downloading clang 3.4..."
-mkdir /usr/local/clang-3.4
-wget -q -O - http://llvm.org/releases/3.4/clang+llvm-3.4-x86_64-unknown-ubuntu12.04.tar.xz |
-	unxz -c | tar xf - --strip-components=1 -C /usr/local/clang-3.4
-
-
-# The section below is still around, in case we want to try the llvm.org/apt/
-# repository again.
-
-# Set to true to enable using the clang stable builds hosted at
-# http://llvm.org/apt/.
-#
-# Note: there have been issues with this repository.  Several days in a row
-# there have been problems running from broken a source repository (causing us
-# to remove them from the .list file), to the toolchain being packaged
-# incorrectly (most likely due to a change in version number--3.4.0 -> 3.4.1).
-# Use with care.
-# USE_CLANG_34=true
-
-# if [ -n "$USE_CLANG_34" ]; then
-# 	add-apt-repository -y ppa:ubuntu-toolchain-r/ppa
-# 	wget -O - http://llvm.org/apt/llvm-snapshot.gpg.key | apt-key add -
-
-# 	cat > /etc/apt/sources.list.d/clang.list << "EOF"
-# # deb http://llvm.org/apt/precise/ llvm-toolchain-precise main
-# # deb-src http://llvm.org/apt/precise/ llvm-toolchain-precise main
-# # 3.4
-# deb http://llvm.org/apt/precise/ llvm-toolchain-precise-3.4 main
-# # deb-src http://llvm.org/apt/precise/ llvm-toolchain-precise-3.4 main
-# # Common
-# deb http://ppa.launchpad.net/ubuntu-toolchain-r/test/ubuntu precise main
-# EOF
-# fi
-
-# apt-get -qq update
-
-# [ -n "$USE_CLANG_34" ] &&
-# 	apt-get -qq -y --no-install-recommends install clang-3.4 lldb-3.4
-
-pip install cpp-coveralls --use-mirrors
-
-# install prebuilt dependencies
-cd /opt
-sudo git clone --depth=1 git://github.com/tarruda/neovim-deps
diff --git a/scripts/travis.sh b/scripts/travis.sh
index ec8ae435af..849d458b5a 100755
--- a/scripts/travis.sh
+++ b/scripts/travis.sh
@@ -17,11 +17,20 @@ check_and_report() {
 	)
 }
 
-# setup environment for using the /opt/neovim-deps prefix
-export PATH="/opt/neovim-deps/bin:$PATH"
-export PKG_CONFIG_PATH="/opt/neovim-deps/lib/pkgconfig"
-export DEPS_CMAKE_FLAGS="-DUSE_BUNDLED_LIBUV=OFF -DUSE_BUNDLED_LUAJIT=OFF -DUSE_BUNDLED_MSGPACK=OFF -DUSE_BUNDLED_LUAROCKS=OFF"
-eval $(/opt/neovim-deps/bin/luarocks path)
+set_environment() {
+	local prefix="$1"
+	eval $($prefix/bin/luarocks path)
+	export PATH="$prefix/bin:$PATH"
+	export PKG_CONFIG_PATH="$prefix/lib/pkgconfig"
+	export DEPS_CMAKE_FLAGS="-DUSE_BUNDLED_LIBUV=OFF -DUSE_BUNDLED_LUAJIT=OFF -DUSE_BUNDLED_MSGPACK=OFF -DUSE_BUNDLED_LUAROCKS=OFF"
+}
+
+# install prebuilt dependencies
+if [ ! -d /opt/neovim-deps ]; then
+	cd /opt
+	sudo git clone --depth=1 git://github.com/tarruda/neovim-deps
+	cd -
+fi
 
 # Travis reports back that it has 32-cores via /proc/cpuinfo, but it's not
 # what we really have available.  According to their documentation, it only has
@@ -31,7 +40,19 @@ eval $(/opt/neovim-deps/bin/luarocks path)
 # for more information.
 MAKE_CMD="make -j2"
 
-if [ "$CC" = "clang" ]; then
+if [ "$TRAVIS_BUILD_TYPE" = "clang/asan" ]; then
+	if [ ! -d /usr/local/clang-3.4 ]; then
+		echo "Downloading clang 3.4..."
+		sudo sh <<- "EOF"
+		mkdir /usr/local/clang-3.4
+		wget -q -O - http://llvm.org/releases/3.4/clang+llvm-3.4-x86_64-unknown-ubuntu12.04.tar.xz |
+		unxz -c | tar xf - --strip-components=1 -C /usr/local/clang-3.4
+		EOF
+	fi
+	sudo pip install cpp-coveralls --use-mirrors
+
+	export CC=clang
+	set_environment /opt/neovim-deps
 	if test -f /usr/local/clang-3.4/bin/clang; then
 		USE_CLANG_34=true
 		export CC=/usr/local/clang-3.4/bin/clang
@@ -56,7 +77,7 @@ if [ "$CC" = "clang" ]; then
 		export ASAN_OPTIONS="detect_leaks=1:"
 	else
 		symbolizer=/usr/local/clang-3.3/bin/llvm-symbolizer
-        fi
+	fi
 
 	export SANITIZE=1
 	export ASAN_SYMBOLIZER_PATH=$symbolizer
@@ -74,10 +95,23 @@ if [ "$CC" = "clang" ]; then
 		exit 1
 	fi
 	check_and_report
+	coveralls --encoding iso-8859-1
 	$MAKE_CMD install
-else
+elif [ "$TRAVIS_BUILD_TYPE" = "gcc/unittest" ]; then
+	sudo pip install cpp-coveralls --use-mirrors
+	export CC=gcc
+	set_environment /opt/neovim-deps
 	export SKIP_EXEC=1
-	$MAKE_CMD CMAKE_EXTRA_FLAGS="-DBUSTED_OUTPUT_TYPE=TAP -DUSE_GCOV=ON"
-	$MAKE_CMD cmake CMAKE_EXTRA_FLAGS="-DUSE_GCOV=ON"
-	$MAKE_CMD unittest
+	$MAKE_CMD CMAKE_EXTRA_FLAGS="-DBUSTED_OUTPUT_TYPE=TAP -DUSE_GCOV=ON" unittest
+	coveralls --encoding iso-8859-1
+elif [ "$TRAVIS_BUILD_TYPE" = "gcc/ia32" ]; then
+	set_environment /opt/neovim-deps/32
+	sudo apt-get update
+	sudo apt-get install gcc-multilib g++-multilib libncurses5:i386
+	sudo ln -s /lib/i386-linux-gnu/libtinfo.so.5  /lib/i386-linux-gnu/libtinfo.so
+	sudo ln -s /lib/i386-linux-gnu/libncurses.so.5.9  /lib/i386-linux-gnu/libcurses.so
+	$MAKE_CMD CMAKE_EXTRA_FLAGS="-DBUSTED_OUTPUT_TYPE=TAP -DCMAKE_TOOLCHAIN_FILE=cmake/i386-linux-gnu.toolchain.cmake" unittest
+	$MAKE_CMD test
+elif [ "$TRAVIS_BUILD_TYPE" = "clint" ]; then
+	./scripts/clint.sh
 fi