[PATCH] bitbake.conf/gcc: Add clean masks for stamp files

[Richard Purdie <richard.purdie@linuxfoundation.org>]

This takes advantage of new bitbake functionality to clean up stale stamp
files when creating new stamp files.

[YOCTO #2961]

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 9c51630..b3d3f52 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}/${PF}"
+STAMP = "${TMPDIR}/stamps/${MULTIMACH_TARGET_SYS}/${PN}-${EXTENDPE}${PV}-${PR}"
+STAMPCLEAN = "${TMPDIR}/stamps/${MULTIMACH_TARGET_SYS}/${PN}-*-*"
 WORKDIR = "${TMPDIR}/work/${MULTIMACH_TARGET_SYS}/${PF}"
 T = "${WORKDIR}/temp"
 D = "${WORKDIR}/image"
diff --git a/meta/recipes-devtools/gcc/gcc-common.inc b/meta/recipes-devtools/gcc/gcc-common.inc
index 72180db..4ef2a1b 100644
--- a/meta/recipes-devtools/gcc/gcc-common.inc
+++ b/meta/recipes-devtools/gcc/gcc-common.inc
@@ -63,6 +63,10 @@ SS = "${TMPDIR}/stamps/work-shared/gcc-${PV}-${PR}"
 do_fetch[stamp-base] = "${SS}"
 do_unpack[stamp-base] = "${SS}"
 do_patch[stamp-base] = "${SS}"
+SSCLEAN = "${TMPDIR}/stamps/work-shared/gcc-*-*"
+do_fetch[stamp-base-clean] = "${SSCLEAN}"
+do_unpack[stamp-base-clean] = "${SSCLEAN}"
+do_patch[stamp-base-clean] = "${SSCLEAN}"
 
 # SW means Shared Work directory
 SW = "${TMPDIR}/work-shared/gcc-${PV}-${PR}"