For the experiment, I wanted to see whether I could achieve no task
signature change when building nativesdk-glibc for two different
MACHINEs, but I found that the do_install sigdata for
nativesdk-linux-libc-headers changed. We're installing the
linux-libc-headers for the build machine, so it seems to make sense to
take control of the TARGET_CC_KERNEL_ARCH:
diff --git a/meta/classes/nativesdk.bbclass
b/meta/classes/nativesdk.bbclass
index 32c3aa32ad..655439dd73 100644
--- a/meta/classes/nativesdk.bbclass
+++ b/meta/classes/nativesdk.bbclass
@@ -47,6 +47,7 @@ TARGET_VENDOR = "${SDK_VENDOR}"
TARGET_OS = "${SDK_OS}"
TARGET_PREFIX = "${SDK_PREFIX}"
TARGET_CC_ARCH = "${SDK_CC_ARCH}"
+TARGET_CC_KERNEL_ARCH = "${SDK_CC_ARCH}"
TARGET_LD_ARCH = "${SDK_LD_ARCH}"
Which leaves me with:
basehash changed from 42ed3480096bb7ea53b60dc876da0613 to
38ea60bdac041673f2c491d7bbabe17c
Variable MACHINE value changed from 'qemuarm' to 'qemux86-64'
runtaskdeps changed:
linux-libc-headers/linux-libc-headers_4.18.bb.do_compile:virtual:nativesdk
with hash cbb186fe33cd69cb0b06384e4d50a244
changed to
linux-libc-headers/linux-libc-headers_4.18.bb.do_compile:virtual:nativesdk
with hash 4d34d6981b79d0fccc768566bf2fa533
Hash for dependent task
linux-libc-headers/linux-libc-headers_4.18.bb.do_compile:virtual:nativesdk
changed from cbb186fe33cd69cb0b06384e4d50a244 to
4d34d6981b79d0fccc768566bf2fa533
The configure and compile tasks for linux-libc-headers are both set to
noexec. For the experiment, I added an empty do_configure task, with
this result on the do_configure sigdata:
basehash changed from f13c2a2066fa48f0ccac35c085537c71 to
bb13f2b1b1e7e6666376f3fb5a8ec888
Variable MACHINE value changed from 'qemux86-64' to 'qemuarm'
What to do? Why is the MACHINE variable included in the task signature
(it is unset in run.do_configure)? Adding it to BB_HASHBASE_WHITELIST
had no effect. What am I missing here?
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