From 0a6dcaaee091353387e1b46aebe4c402ff53a36c Mon Sep 17 00:00:00 2001
From: Casey Carter <Casey@Carter.net>
Date: Fri, 30 Sep 2016 14:25:42 -0700
Subject: [PATCH] [Travis CI] Enhance the build matrix:

* Linux Clang+libc++ 3.6/7/8 Debug/Release
* Linux GCC 5/6 Debug/Release
* OSX Xcode 7/8 Debug/Release
---
 .travis.yml | 158 ++++++++++++++++++++++++++++++++++++++++------------
 1 file changed, 122 insertions(+), 36 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 88d270d..5f9fffa 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,70 +3,156 @@
 language: cpp
 sudo: false
 
+cache:
+  directories:
+    - ${TRAVIS_BUILD_DIR}/deps/cmake
+    - ${TRAVIS_BUILD_DIR}/deps/llvm-3.5.2/install
+    - ${TRAVIS_BUILD_DIR}/deps/llvm-3.6.2/install
+    - ${TRAVIS_BUILD_DIR}/deps/llvm-3.7.1/install
+    - ${TRAVIS_BUILD_DIR}/deps/llvm-3.8.1/install
+    - ${TRAVIS_BUILD_DIR}/deps/llvm-3.9.0/install
+
 matrix:
   include:
 
-# FIXME: Get libc++ working properly with clang on Travis-ci
-#    # 1/ Linux Clang Builds
-#    - os: linux
-#      compiler: clang
-#      addons: &clang37
-#        apt:
-#          sources: ['llvm-toolchain-precise-3.7', 'ubuntu-toolchain-r-test']
-#          packages: ['clang-3.7']
-#      env: COMPILER='clang++-3.7'
-#
-#    - os: linux
-#      compiler: clang
-#      addons: &clang38
-#        apt:
-#          sources: ['llvm-toolchain-precise-3.8', 'ubuntu-toolchain-r-test']
-#          packages: ['clang-3.8']
-#      env: COMPILER='clang++-3.8'
+    # 1/ Linux Clang Builds
+    - os: linux
+      env: CLANG_VERSION=3.6 BUILD_TYPE=Debug
+      addons: &clang36
+        apt:
+          packages:
+            - clang-3.6
+            - g++-5
+          sources: &sources
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.6
+    - os: linux
+      env: CLANG_VERSION=3.6 BUILD_TYPE=Release
+      addons: *clang36
+    - os: linux
+      env: CLANG_VERSION=3.7 BUILD_TYPE=Debug
+      addons: &clang37
+        apt:
+          packages:
+            - clang-3.7
+            - g++-5
+          sources: &sources
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.7
+    - os: linux
+      env: CLANG_VERSION=3.7 BUILD_TYPE=Release
+      addons: *clang37
+    - os: linux
+      env: CLANG_VERSION=3.8 BUILD_TYPE=Debug
+      addons: &clang38
+        apt:
+          packages:
+            - clang-3.8
+            - g++-5
+          sources: &sources
+            - ubuntu-toolchain-r-test
+            - llvm-toolchain-precise-3.8
+    - os: linux
+      env: CLANG_VERSION=3.8 BUILD_TYPE=Release
+      addons: *clang38
 
     # 2/ Linux GCC Builds
     - os: linux
-      compiler: gcc
+      env: GCC_VERSION=5 BUILD_TYPE=Debug
       addons: &gcc5
         apt:
-          sources: ['ubuntu-toolchain-r-test']
-          packages: ['g++-5']
-      env: COMPILER='g++-5'
-
+          packages: g++-5
+          sources: *sources
+    - os: linux
+      env: GCC_VERSION=5 BUILD_TYPE=Release
+      addons: *gcc5
     - os: linux
-      compiler: gcc
+      env: GCC_VERSION=6 BUILD_TYPE=Debug
       addons: &gcc6
         apt:
-          sources: ['ubuntu-toolchain-r-test']
-          packages: ['g++-6']
-      env: COMPILER='g++-6'
+          packages: g++-6
+          sources: *sources
+    - os: linux
+      env: GCC_VERSION=6 BUILD_TYPE=Release
+      addons: *gcc6
 
     # 3/ OSX Clang Builds
     - os: osx
+      env: BUILD_TYPE=Debug
       osx_image: xcode7
       compiler: clang
-      env: COMPILER='clang++'
 
     - os: osx
+      env: BUILD_TYPE=Release
+      osx_image: xcode7
+      compiler: clang
+
+    - os: osx
+      env: BUILD_TYPE=Debug
+      osx_image: xcode8
+      compiler: clang
+
+    - os: osx
+      env: BUILD_TYPE=Release
       osx_image: xcode8
       compiler: clang
-      env: COMPILER='clang++'
 
 install:
+  - if [[ -n "$CLANG_VERSION" ]]; then export CXX=clang++-$CLANG_VERSION CC=clang-$CLANG_VERSION; fi
+  - if [[ -n "$GCC_VERSION" ]]; then export CXX=g++-$GCC_VERSION CC=gcc-$GCC_VERSION; fi
+  - export JOBS=2
   - DEPS_DIR="${TRAVIS_BUILD_DIR}/deps"
-  - mkdir ${DEPS_DIR} && cd ${DEPS_DIR}
+  - mkdir -p ${DEPS_DIR} && cd ${DEPS_DIR}
+
+  ############################################################################
+  # Install a recent CMake (unless already installed on OS X)
+  ############################################################################
   - |
     if [[ "${TRAVIS_OS_NAME}" == "linux" ]]; then
-      CMAKE_URL="http://www.cmake.org/files/v3.3/cmake-3.3.2-Linux-x86_64.tar.gz"
-      mkdir cmake && travis_retry wget --no-check-certificate --quiet -O - ${CMAKE_URL} | tar --strip-components=1 -xz -C cmake
-      export PATH=${DEPS_DIR}/cmake/bin:${PATH}
-    elif [[ "${TRAVIS_OS_NAME}" == "osx" ]]; then
-      which cmake || brew install cmake
+      if [[ -z "$(ls -A ${DEPS_DIR}/cmake/bin)" ]]; then
+        CMAKE_URL="https://cmake.org/files/v3.6/cmake-3.6.2-Linux-x86_64.tar.gz"
+        mkdir -p cmake && travis_retry wget --no-check-certificate --quiet -O - "${CMAKE_URL}" | tar --strip-components=1 -xz -C cmake
+      fi
+      export PATH="${DEPS_DIR}/cmake/bin:${PATH}"
+    else
+      if ! brew ls --version cmake &>/dev/null; then brew install cmake; fi
+    fi
+
+  ############################################################################
+  # [linux]: Install the right version of libc++
+  ############################################################################
+  - |
+    if [[ -n "$CLANG_VERSION" && "${TRAVIS_OS_NAME}" == "linux" && "${STDLIB}" != "libstdc++" ]]; then
+      if [[ "$CLANG_VERSION" == "3.5" ]]; then LLVM_VERSION="3.5.2"; fi
+      if [[ "$CLANG_VERSION" == "3.6" ]]; then LLVM_VERSION="3.6.2"; fi
+      if [[ "$CLANG_VERSION" == "3.7" ]]; then LLVM_VERSION="3.7.1"; fi
+      if [[ "$CLANG_VERSION" == "3.8" ]]; then LLVM_VERSION="3.8.1"; fi
+      if [[ "$CLANG_VERSION" == "3.9" ]]; then LLVM_VERSION="3.9.0"; fi
+      LLVM_ROOT="${DEPS_DIR}/llvm-${LLVM_VERSION}"
+      LLVM_URL="http://llvm.org/releases/${LLVM_VERSION}/llvm-${LLVM_VERSION}.src.tar.xz"
+      LIBCXX_URL="http://llvm.org/releases/${LLVM_VERSION}/libcxx-${LLVM_VERSION}.src.tar.xz"
+      LIBCXXABI_URL="http://llvm.org/releases/${LLVM_VERSION}/libcxxabi-${LLVM_VERSION}.src.tar.xz"
+      if [[ -z "$(ls -A ${LLVM_ROOT}/install/include)" ]]; then
+        mkdir -p "${LLVM_ROOT}" "${LLVM_ROOT}/build" "${LLVM_ROOT}/projects/libcxx" "${LLVM_ROOT}/projects/libcxxabi"
+        travis_retry wget --quiet -O - "${LLVM_URL}" | tar --strip-components=1 -xJ -C "${LLVM_ROOT}"
+        travis_retry wget --quiet -O - "${LIBCXX_URL}" | tar --strip-components=1 -xJ -C "${LLVM_ROOT}/projects/libcxx"
+        travis_retry wget --quiet -O - "${LIBCXXABI_URL}" | tar --strip-components=1 -xJ -C "${LLVM_ROOT}/projects/libcxxabi"
+        (cd "${LLVM_ROOT}/build" && cmake .. -DCMAKE_CXX_COMPILER="$CXX" -DCMAKE_C_COMPILER="$CC" -DCMAKE_INSTALL_PREFIX="${LLVM_ROOT}/install" -DCMAKE_BUILD_TYPE=$BUILD_TYPE)
+        (cd "${LLVM_ROOT}/build/projects/libcxx" && make install -j$JOBS)
+        (cd "${LLVM_ROOT}/build/projects/libcxxabi" && make install -j$JOBS)
+      fi
+      export CXXFLAGS="-I ${LLVM_ROOT}/install/include/c++/v1"
+      export LDFLAGS="-L ${LLVM_ROOT}/install/lib -lc++ -lc++abi"
+      export LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:${LLVM_ROOT}/install/lib"
     fi
+
   - cd ${TRAVIS_BUILD_DIR}
 
-before_script: export CXX=${COMPILER}
+before_script:
+  - cmake . -Bbuild -DCMAKE_CXX_COMPILER="$CXX" -DCMAKE_C_COMPILER="$CC" -DCMAKE_BUILD_TYPE=$BUILD_TYPE
+  - cmake --build build -- -j$JOBS
 
 script:
-  - ./scripts/build.py --tests
+  - cd build
+  - ctest --output-on-failure -j$JOBS