Re: [Qemu-devel] [PATCH v2 13/21] travis: improve ccache use

["Alex Bennée" <alex.bennee@linaro.org>]

Philippe Mathieu-Daudé <f4bug@amsat.org> writes:

> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>

Can you expand the commit message to breifly explain what all these
extra settings change. What is CCACHE_SLOPINESS and ccache -s doing?

> ---
>  .travis.yml | 14 ++++++++++++--
>  1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/.travis.yml b/.travis.yml
> index a7512f3ab0..96ddc16cfd 100644
> --- a/.travis.yml
> +++ b/.travis.yml
> @@ -68,6 +68,8 @@ env:
>        # be kind with Travis free plan, restrict to at most 4 cores
>      - PARALLEL_JOBS="$(($(test ${HW_CORES} -gt ${VM_CORES} && echo ${VM_CORES} || echo ${HW_CORES}) + 1))"
>      - HOMEBREW_MAKE_JOBS="${PARALLEL_JOBS}"
> +    # ccache
> +    - CCACHE_SLOPPINESS="file_macro,time_macros"
>      # tests
>      - TEST_CMD="make -j${PARALLEL_JOBS} check"
>    matrix:
> @@ -82,14 +84,21 @@ git:
>    submodules: false
>  before_install:
>    - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew update ; fi
> -  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install libffi gettext glib pixman ; fi
> +  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then brew install libffi gettext glib pixman ccache ; fi
>    - git submodule update --init --recursive
>  before_script:
> +  # https://docs.travis-ci.com/user/caching#ccache-on-os-x
> +  - if [ "$TRAVIS_OS_NAME" == "osx" ]; then export PATH=/usr/local/opt/ccache/libexec:$PATH ; fi
> +  - if [ "$CC" == "clang" ]; then export CCACHE_CPP2=1 ; fi
> +  - if [ -x "$(command -v ccache 2>/dev/null)" ]; then export CC="ccache ${CC}"; ccache -s -M 0 -z; fi
>    - echo "Using ${PARALLEL_JOBS} parallel jobs"
> +  - export HOST_CC="${CC}"
>    - ./configure ${CONFIG}
>  script:
> -  - make -j${PARALLEL_JOBS}
> +  - make -j${PARALLEL_JOBS} && ccache -s
>    - ${TEST_CMD}
> +before_cache:
> +  - ccache -s
>  matrix:
>    include:
>      # Test with CLang for compile portability
> @@ -112,6 +121,7 @@ matrix:
>             TEST_CMD=""
>        compiler: gcc
>      - env: CONFIG=""
> +           CCACHE_SLOPPINESS="file_macro,time_macros,include_file_ctime,include_file_mtime"
>        os: osx
>        compiler: clang
>      # Plain Trusty System Build


--
Alex Bennée