[oe-commits] Paul Eggleton : classes/cml1: ensure -c menuconfig forces a rebuild next time

[git at git.openembedded.org]

Module: openembedded-core.git
Branch: master
Commit: 9bf6b60e1599cf5dd87089d42584583cdfd6807a
URL:    http://git.openembedded.org/?p=openembedded-core.git&a=commit;h=9bf6b60e1599cf5dd87089d42584583cdfd6807a

Author: Paul Eggleton <paul.eggleton at linux.intel.com>
Date:   Mon Jun 18 16:50:50 2012 +0100

classes/cml1: ensure -c menuconfig forces a rebuild next time

Ensure the following results in the kernel being rebuilt, repackaged and
re-deployed in the final step:

bitbake virtual/kernel
bitbake -c menuconfig virtual/kernel
[ make changes to the kernel configuration and save ]
bitbake virtual/kernel

If there are no changes to the configuration saved, the rebuild will not
be triggered.

Note that this relies on a function recently added to BitBake and
requires full hashing (i.e. BB_SIGNATURE_HANDLER must be set to a
signature handler that inherits from BasicHash) - if this is not the
case or the function is not available in the version of BitBake being
used this change will do nothing.

Fixes [YOCTO #2256].

Signed-off-by: Paul Eggleton <paul.eggleton at linux.intel.com>

---

 meta/classes/cml1.bbclass |   16 ++++++++++++++++
 1 files changed, 16 insertions(+), 0 deletions(-)

diff --git a/meta/classes/cml1.bbclass b/meta/classes/cml1.bbclass
index bd25311..fd80c18 100644
--- a/meta/classes/cml1.bbclass
+++ b/meta/classes/cml1.bbclass
@@ -15,7 +15,23 @@ HOSTLDFLAGS = "${BUILD_LDFLAGS}"
 HOST_LOADLIBES = "-lncurses"
 
 python do_menuconfig() {
+        try:
+            mtime = os.path.getmtime(".config")
+        except OSError:
+            mtime = 0
+
         oe_terminal("${SHELL} -c \"make menuconfig; echo 'Pausing for 5 seconds'; sleep 5\"", '${PN} Configuration', d)
+
+        # FIXME this check can be removed when the minimum bitbake version has been bumped
+        if hasattr(bb.build, 'write_taint'):
+            try:
+                newmtime = os.path.getmtime(".config")
+            except OSError:
+                newmtime = 0
+
+            if newmtime > mtime:
+                bb.note("Configuration changed, recompile will be forced")
+                bb.build.write_taint('do_compile', d)
 }
 do_menuconfig[depends] += "ncurses-native:do_populate_sysroot"
 do_menuconfig[nostamp] = "1"