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- #
- # Usage:
- # - Enable ccache
- # Add the following line to a conffile such as conf/local.conf:
- # INHERIT += "ccache"
- #
- # - Disable ccache for a recipe
- # Add the following line to the recipe if it can't be built with ccache:
- # CCACHE_DISABLE = '1'
- #
- # - Share ccache files between different builds
- # Set CCACHE_TOP_DIR to a shared dir
- # CCACHE_TOP_DIR = /path/to/shared_ccache/
- #
- # - TO debug ccahe
- # export CCACHE_DEBUG = "1"
- # export CCACHE_LOGFILE = "${CCACHE_DIR}/logfile.log"
- # And also set PARALLEL_MAKE = "-j 1" to get make the log in order
- #
- # Set it to a shared location for different builds, so that cache files can
- # be shared between different builds.
- CCACHE_TOP_DIR ?= "${TMPDIR}/ccache"
- # ccahe removes CCACHE_BASEDIR from file path, so that hashes will be the same
- # in different builds.
- export CCACHE_BASEDIR ?= "${TMPDIR}"
- # Used for sharing cache files after compiler is rebuilt
- export CCACHE_COMPILERCHECK ?= "%compiler% -dumpspecs"
- export CCACHE_CONFIGPATH ?= "${COREBASE}/meta/conf/ccache.conf"
- export CCACHE_DIR ?= "${CCACHE_TOP_DIR}/${MULTIMACH_TARGET_SYS}/${PN}"
- # We need to stop ccache considering the current directory or the
- # debug-prefix-map target directory to be significant when calculating
- # its hash. Without this the cache would be invalidated every time
- # ${PV} or ${PR} change.
- export CCACHE_NOHASHDIR ?= "1"
- python() {
- """
- Enable ccache for the recipe
- """
- pn = d.getVar('PN')
- # quilt-native doesn't need ccache since no c files
- if not (pn in ('ccache-native', 'quilt-native') or
- bb.utils.to_boolean(d.getVar('CCACHE_DISABLE'))):
- d.appendVar('DEPENDS', ' ccache-native')
- d.setVar('CCACHE', 'ccache ')
- }
- addtask cleanccache after do_clean
- python do_cleanccache() {
- import shutil
- ccache_dir = d.getVar('CCACHE_DIR')
- if os.path.exists(ccache_dir):
- bb.note("Removing %s" % ccache_dir)
- shutil.rmtree(ccache_dir)
- else:
- bb.note("%s doesn't exist" % ccache_dir)
- }
- addtask cleanall after do_cleanccache
- do_cleanccache[nostamp] = "1"
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