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e96d0200ca
Fixed race issues when parallel build: ccache: error: /path/to/ccache/i586-poky-linux/mmc-utils/ccache.conf: No such file or directory ccache: error: /path/to/ccache/i586-poky-linux/mmc-utils/ccache.conf: No such file or directory This is because we set CCACHE_DIR for earch recipe, and ccache will create a ccache.conf for each CCACHE_DIR when CCACHE_CONFIGPATH is not set, but there might be a race issue in parallel build: ccache gcc file1.c ccache gcc file2.c If the two ccache processes use fopen(path, "w") to create ccache.conf at the same time, the error would happen. Set CCACHE_CONFIGPATH to meta/conf/ccache.conf can fix the problem, and we can add other configs to the file when needed. And also set cache_dir_levels to 1 (default is 2) since each recipe has a cache dir, thus we don't have too many files in one dir. (From OE-Core rev: 2abbc4d0cd571e82ed6188d3b2d84b4cd6be25e8) Signed-off-by: Robert Yang <liezhi.yang@windriver.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
67 lines
2.0 KiB
Plaintext
67 lines
2.0 KiB
Plaintext
#
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# Usage:
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# - Enable ccache
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# Add the following line to a conffile such as conf/local.conf:
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# INHERIT += "ccache"
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#
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# - Disable ccache for a recipe
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# Add the following line to the recipe if it can't be built with ccache:
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# CCACHE_DISABLE = '1'
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#
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# - Share ccache files between different builds
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# Set CCACHE_TOP_DIR to a shared dir
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# CCACHE_TOP_DIR = /path/to/shared_ccache/
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#
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# - TO debug ccahe
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# export CCACHE_DEBUG = "1"
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# export CCACHE_LOGFILE = "${CCACHE_DIR}/logfile.log"
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# And also set PARALLEL_MAKE = "-j 1" to get make the log in order
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#
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# Set it to a shared location for different builds, so that cache files can
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# be shared between different builds.
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CCACHE_TOP_DIR ?= "${TMPDIR}/ccache"
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# ccahe removes CCACHE_BASEDIR from file path, so that hashes will be the same
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# in different builds.
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export CCACHE_BASEDIR ?= "${TMPDIR}"
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# Used for sharing cache files after compiler is rebuilt
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export CCACHE_COMPILERCHECK ?= "%compiler% -dumpspecs"
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export CCACHE_CONFIGPATH ?= "${COREBASE}/meta/conf/ccache.conf"
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export CCACHE_DIR ?= "${CCACHE_TOP_DIR}/${MULTIMACH_TARGET_SYS}/${PN}"
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# We need to stop ccache considering the current directory or the
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# debug-prefix-map target directory to be significant when calculating
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# its hash. Without this the cache would be invalidated every time
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# ${PV} or ${PR} change.
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export CCACHE_NOHASHDIR ?= "1"
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python() {
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"""
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Enable ccache for the recipe
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"""
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pn = d.getVar('PN')
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# quilt-native doesn't need ccache since no c files
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if not (pn in ('ccache-native', 'quilt-native') or
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bb.utils.to_boolean(d.getVar('CCACHE_DISABLE'))):
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d.appendVar('DEPENDS', ' ccache-native')
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d.setVar('CCACHE', 'ccache ')
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}
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addtask cleanccache after do_clean
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python do_cleanccache() {
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import shutil
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ccache_dir = d.getVar('CCACHE_DIR')
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if os.path.exists(ccache_dir):
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bb.note("Removing %s" % ccache_dir)
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shutil.rmtree(ccache_dir)
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else:
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bb.note("%s doesn't exist" % ccache_dir)
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}
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addtask cleanall after do_cleanccache
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do_cleanccache[nostamp] = "1"
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