Merge pull request #45 from xoviat/ccache

MRG: enable use of ccache

Enable use of ccache with environment variable toggle.

.travis.yml

@@ -12,6 +12,11 @@ matrix:
       dist: trusty
       env:
         - TEST_BUILDS=1
+    - os: linux
+      dist: trusty
+      env:
+        - TEST_BUILDS=1
+        - USE_CCACHE=1
     - os: osx
       osx_image: xcode6.4
       env:
@@ -53,6 +58,11 @@ matrix:
       env:
         - PYTHON_VERSION=3.6.1
         - VENV=venv
+    - os: osx
+      env:
+        - PYTHON_VERSION=3.6.1
+        - VENV=venv
+        - USE_CCACHE=1
     - os: osx
       env:
         - PYTHON_VERSION=pypy-2.6

docker_build_wrap.sh

@@ -7,6 +7,10 @@
 #   BUILD_DEPENDS  (may be used by config.sh, can be empty)
 set -e
 
+if [ "$USE_CCACHE" == "1" ]; then
+    activate_ccache
+fi
+
 # Unicode width, default 32
 UNICODE_WIDTH=${UNICODE_WIDTH:-32}
 

manylinux_utils.sh

@@ -49,3 +49,25 @@ function repair_wheelhouse {
     done
     chmod -R a+rwX $out_dir
 }
+
+function activate_ccache {
+    # Link up the correct location for ccache
+    ln -s /parent-home/.ccache $HOME/.ccache
+
+    # Now install ccache
+    yum install -y ccache
+
+    # Create fake compilers and prepend them to the PATH
+    # Note that yum is supposed to create these for us,
+    # but I had trouble finding them
+    local ccache_dir=/usr/lib/ccache/compilers
+    mkdir -p $ccache_dir
+    ln -s /usr/bin/ccache $CCACHE_DIR/gcc
+    ln -s /usr/bin/ccache $CCACHE_DIR/g++
+    ln -s /usr/bin/ccache $CCACHE_DIR/cc
+    ln -s /usr/bin/ccache $CCACHE_DIR/c++
+    export PATH=$CCACHE_DIR:$PATH
+
+    # Prove to the developer that ccache is activated
+    which gcc
+}

osx_utils.sh

@@ -267,6 +267,9 @@ function set_py_vars {
 }
 
 function get_macpython_environment {
+    if [ "$USE_CCACHE" == "1" ]; then
+        activate_ccache
+    fi
     # Set up MacPython environment
     # Parameters:
     #     $version : [implementation-]major[.minor[.patch]]
@@ -333,3 +336,14 @@ function install_pkg_config {
     # https://github.com/matthew-brett/multibuild/issues/24#issue-221951587
     command -v pkg-config > /dev/null 2>&1 || brew install pkg-config
 }
+
+function activate_ccache {
+    brew update
+    brew install ccache
+    export PATH=/usr/local/opt/ccache/libexec:$PATH
+    export CCACHE_MAXSIZE=200M
+    export CCACHE_CPP2=1
+
+    # Prove to the developer that ccache is activated
+    which clang
+}

travis_linux_steps.sh

@@ -87,9 +87,11 @@ function build_multilinux {
         -e WHEEL_SDIR="$WHEEL_SDIR" \
         -e MANYLINUX_URL="$MANYLINUX_URL" \
         -e BUILD_DEPENDS="$BUILD_DEPENDS" \
+        -e USE_CCACHE="$USE_CCACHE" \
         -e REPO_DIR="$repo_dir" \
         -e PLAT="$PLAT" \
         -v $PWD:/io \
+        -v $HOME:/parent-home \
         $docker_image /io/$MULTIBUILD_DIR/docker_build_wrap.sh
 }