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ccache: Separate out into its own class 

Currently, ccache is used if it is present. When building from scratch it gives
no performance improvement and creates a ton of empty directories even when its
not in use.

This change moves ccache support to a bbclass file which the user can choose to
enable. This should make builds more determinstic and make it easier/clearer
to the end user when its being used and when it is not.

(From OE-Core rev: 2acf8da4f13c175ea818b9514677b7059de1e3e2)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie 2012-05-29 13:29:44 +01:00
parent a92ff3ad42
commit 0299499770
4 changed files with 9 additions and 5 deletions
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2
meta/classes/base.bbclass
View File

@ -271,7 +271,7 @@ python base_eventhandler() {
}
addtask configure after do_patch
do_configure[dirs] = "${CCACHE_DIR} ${S} ${B}"
do_configure[dirs] = "${S} ${B}"
do_configure[deptask] = "do_populate_sysroot"
base_do_configure() {
:

5
meta/classes/ccache.bbclass Normal file
View File

@ -0,0 +1,5 @@
CCACHE = "${@bb.which(d.getVar('PATH', True), 'ccache') and 'ccache '}"
export CCACHE_DIR = "${TMPDIR}/ccache/${MULTIMACH_HOST_SYS}/${PN}"
do_configure[dirs] =+ "${CCACHE_DIR}"
do_kernel_configme[dirs] =+ "${CCACHE_DIR}"

2
meta/classes/kernel-yocto.bbclass
View File

@ -161,7 +161,7 @@ do_kernel_checkout[dirs] = "${S}"
addtask kernel_checkout before do_patch after do_unpack
do_kernel_configme[dirs] = "${CCACHE_DIR} ${S} ${B}"
do_kernel_configme[dirs] = "${S} ${B}"
do_kernel_configme() {
echo "[INFO] doing kernel configme"

5
meta/conf/bitbake.conf
View File

@ -409,10 +409,9 @@ export PATH
# Build utility info.
##################################################################
CCACHE = "${@bb.which(d.getVar('PATH', True), 'ccache') and 'ccache '}"
CCACHE ??= ""
TOOLCHAIN_OPTIONS = " --sysroot=${STAGING_DIR_TARGET}"
export CCACHE_DIR = "${TMPDIR}/ccache/${MULTIMACH_HOST_SYS}/${PN}"
export CC = "${CCACHE}${HOST_PREFIX}gcc ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
export CXX = "${CCACHE}${HOST_PREFIX}g++ ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
export F77 = "${CCACHE}${HOST_PREFIX}g77 ${HOST_CC_ARCH}${TOOLCHAIN_OPTIONS}"
@ -746,7 +745,7 @@ BB_CONSOLELOG ?= "${TMPDIR}/cooker.log.${DATETIME}"
# Setup our default hash policy
BB_SIGNATURE_HANDLER ?= "OEBasic"
BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM USER FILESPATH STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE PRSERV_HOST PRSERV_PORT PRSERV_DUMPDIR PRSERV_DUMPFILE PRSERV_LOCKDOWN PARALLEL_MAKE CCACHE_DIR EXTERNAL_TOOLCHAIN"
BB_HASHBASE_WHITELIST ?= "TMPDIR FILE PATH PWD BB_TASKHASH BBPATH DL_DIR SSTATE_DIR THISDIR FILESEXTRAPATHS FILE_DIRNAME HOME LOGNAME SHELL TERM USER FILESPATH STAGING_DIR_HOST STAGING_DIR_TARGET COREBASE PRSERV_HOST PRSERV_PORT PRSERV_DUMPDIR PRSERV_DUMPFILE PRSERV_LOCKDOWN PARALLEL_MAKE CCACHE_DIR EXTERNAL_TOOLCHAIN CCACHE"
BB_HASHCONFIG_WHITELIST ?= "${BB_HASHBASE_WHITELIST} DATE TIME SESSION_MANAGER DBUS_SESSION_BUS_ADDRESS SSH_AGENT_PID XDG_SESSION_COOKIE SSH_AUTH_SOCK XAUTHORITY"
MLPREFIX ??= ""