[OE-core] [PATCH 1/2 V3] bitbake.conf: add STAMPS_DIR for constructing STAMP

[Robert Yang]

Add STAMPS_DIR for constructing STAMP, the defination of STAMP is:

STAMP = "${TMPDIR}/stamps/${MULTIMACH_TARGET_SYS}/${PF}

We can only change the TMPDIR if we want to change the STAMP's location,
but the cache would be regenerated if TMPDIR changed, so add
STAMPS_DIR for constructing it, and add it to the BB_ENV_EXTRAWHITE,
this is very usefull for the "bitbake -S", since then it can be run by:

STAMPS_DIR=<path> bitbake -S <recipe>

which will avoid putting the stamps to ${TMPDIR}/stamps.

BTW, break the too long BB_ENV_EXTRAWHITE into several lines.

[YOCTO #1659]

Signed-off-by: Robert Yang <liezhi.yang at windriver.com>
---
 meta/conf/bitbake.conf       |    3 ++-
 scripts/oe-buildenv-internal |    5 ++++-
 2 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 8074684..653ba98 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -332,7 +332,8 @@ GITDIR = "${CO_DIR}/git2"
 BZRDIR = "${CO_DIR}/bzr"
 HGDIR = "${CO_DIR}/hg"
 
-STAMP = "${TMPDIR}/stamps/${MULTIMACH_TARGET_SYS}/${PF}"
+STAMPS_DIR ?= "${TMPDIR}/stamps"
+STAMP = "${STAMPS_DIR}/${MULTIMACH_TARGET_SYS}/${PF}"
 WORKDIR = "${TMPDIR}/work/${MULTIMACH_TARGET_SYS}/${PF}"
 T = "${WORKDIR}/temp"
 D = "${WORKDIR}/image"
diff --git a/scripts/oe-buildenv-internal b/scripts/oe-buildenv-internal
index 32c0ba0..098d474 100755
--- a/scripts/oe-buildenv-internal
+++ b/scripts/oe-buildenv-internal
@@ -75,4 +75,7 @@ unset BITBAKEDIR
 # Used by the runqemu script
 export BUILDDIR
 export PATH
-export BB_ENV_EXTRAWHITE="MACHINE DISTRO TCMODE TCLIBC http_proxy ftp_proxy https_proxy all_proxy ALL_PROXY no_proxy SSH_AGENT_PID SSH_AUTH_SOCK BB_SRCREV_POLICY SDKMACHINE BB_NUMBER_THREADS PARALLEL_MAKE GIT_PROXY_COMMAND GIT_PROXY_IGNORE SOCKS5_PASSWD SOCKS5_USER SCREENDIR"
+export BB_ENV_EXTRAWHITE="MACHINE DISTRO TCMODE TCLIBC http_proxy ftp_proxy
+    https_proxy all_proxy ALL_PROXY no_proxy SSH_AGENT_PID SSH_AUTH_SOCK BB_SRCREV_POLICY
+    SDKMACHINE BB_NUMBER_THREADS PARALLEL_MAKE GIT_PROXY_COMMAND GIT_PROXY_IGNORE
+    SOCKS5_PASSWD SOCKS5_USER SCREENDIR STAMPS_DIR"
-- 
1.7.1