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.travis.yml: Improve ccache use

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Per https://ccache.dev/manual/latest.html:

  By default, ccache tries to give as few false cache hits as
  possible. However, in certain situations it’s possible that
  you know things that ccache can’t take for granted.

  [The CCACHE_SLOPINESS environment variable] makes it possible
  to tell ccache to relax some checks in order to increase the
  hit rate.

We can relax the ctime/mtime header checks:

  - include_file_ctime

    By default, ccache also will not cache a file if it
    includes a header whose ctime is too new. This option
    disables that check.

  - include_file_mtime

    By default, ccache will not cache a file if it includes
    a header whose mtime is too new. This option disables
    that check.

We also add a call to clear the cache statistics before running
the build, and display them when the build finishes.

See https://docs.travis-ci.com/user/caching/#ccache-cache

Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
This commit is contained in:
Philippe Mathieu-Daudé 2019-09-03 15:26:44 +02:00 committed by Alex Bennée
parent c1073e44b4
commit bcfbf0d56e
1 changed files with 6 additions and 0 deletions
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6
.travis.yml
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@ -70,6 +70,9 @@ env:
- TEST_CMD="make check -j3 V=1"
# This is broadly a list of "mainline" softmmu targets which have support across the major distros
- MAIN_SOFTMMU_TARGETS="aarch64-softmmu,arm-softmmu,i386-softmmu,mips-softmmu,mips64-softmmu,ppc64-softmmu,riscv64-softmmu,s390x-softmmu,x86_64-softmmu"
- CCACHE_SLOPPINESS="include_file_ctime,include_file_mtime"
- CCACHE_MAXSIZE=1G
git:
# we want to do this ourselves
@ -77,10 +80,13 @@ git:
before_script:
- command -v ccache && ccache --zero-stats
- mkdir -p ${BUILD_DIR} && cd ${BUILD_DIR}
- ${SRC_DIR}/configure ${BASE_CONFIG} ${CONFIG} || { cat config.log && exit 1; }
script:
- make -j3 && travis_retry ${TEST_CMD}
after_script:
- command -v ccache && ccache --show-stats
matrix: