1# 2# Usage: 3# - Enable ccache 4# Add the following line to a conffile such as conf/local.conf: 5# INHERIT += "ccache" 6# 7# - Disable ccache for a recipe 8# Add the following line to the recipe if it can't be built with ccache: 9# CCACHE_DISABLE = '1' 10# 11# - Share ccache files between different builds 12# Set CCACHE_TOP_DIR to a shared dir 13# CCACHE_TOP_DIR = /path/to/shared_ccache/ 14# 15# - TO debug ccahe 16# export CCACHE_DEBUG = "1" 17# export CCACHE_LOGFILE = "${CCACHE_DIR}/logfile.log" 18# And also set PARALLEL_MAKE = "-j 1" to get make the log in order 19# 20 21# Set it to a shared location for different builds, so that cache files can 22# be shared between different builds. 23CCACHE_TOP_DIR ?= "${TMPDIR}/ccache" 24 25# ccahe removes CCACHE_BASEDIR from file path, so that hashes will be the same 26# in different builds. 27export CCACHE_BASEDIR ?= "${TMPDIR}" 28 29# Used for sharing cache files after compiler is rebuilt 30export CCACHE_COMPILERCHECK ?= "%compiler% -dumpspecs" 31 32export CCACHE_CONFIGPATH ?= "${COREBASE}/meta/conf/ccache.conf" 33 34export CCACHE_DIR ?= "${CCACHE_TOP_DIR}/${MULTIMACH_TARGET_SYS}/${PN}" 35 36# We need to stop ccache considering the current directory or the 37# debug-prefix-map target directory to be significant when calculating 38# its hash. Without this the cache would be invalidated every time 39# ${PV} or ${PR} change. 40export CCACHE_NOHASHDIR ?= "1" 41 42python() { 43 """ 44 Enable ccache for the recipe 45 """ 46 pn = d.getVar('PN') 47 # quilt-native doesn't need ccache since no c files 48 if not (pn in ('ccache-native', 'quilt-native') or 49 bb.utils.to_boolean(d.getVar('CCACHE_DISABLE'))): 50 d.appendVar('DEPENDS', ' ccache-native') 51 d.setVar('CCACHE', 'ccache ') 52} 53 54addtask cleanccache after do_clean 55python do_cleanccache() { 56 import shutil 57 58 ccache_dir = d.getVar('CCACHE_DIR') 59 if os.path.exists(ccache_dir): 60 bb.note("Removing %s" % ccache_dir) 61 shutil.rmtree(ccache_dir) 62 else: 63 bb.note("%s doesn't exist" % ccache_dir) 64} 65addtask cleanall after do_cleanccache 66do_cleanccache[nostamp] = "1" 67