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When BR2_OPTIMIZE_0, -O0 is passed in compiler CFLAGS. This means no code optimization will be performed. kexec code uses a trick to detect unaligned accesses at link time which needs at least dead-code-removal to work. See put/get_unaligned() macros in kexec/kexec.h. This code was re-enabled in upstream commit [1]. This commit sets at least -O1 (which include the sufficient dead-code-removal) when BR2_OPTIMIZE_0=y, to fix those issues. Fixes: - http://autobuild.buildroot.org/results/8f8/8f8532f1dfbd71e52c51c00118934af9fa45e7cb - http://autobuild.buildroot.org/results/528/528fd7baf9b0ad5549d22ec8e0623c5fa1f2d117 - http://autobuild.buildroot.org/results/499/499115439680adfb4b40042468e5bbb65d91ce6c - ...and many others [1] https://git.kernel.org/pub/scm/utils/kernel/kexec/kexec-tools.git/commit/?id=0723defb5308ac7fce296f8b596bff4df6803f01 Signed-off-by: Julien Olivain <ju.o@free.fr> Signed-off-by: Arnout Vandecappelle <arnout@mind.be> (cherry picked from commit a411588b582ad6a0c8573ec9f59f737473d69bee) Signed-off-by: Peter Korsgaard <peter@korsgaard.com> |
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| .. | ||
| 0001-Fix-building-on-x86_64-with-binutils-2-41.patch | ||
| Config.in | ||
| kexec.hash | ||
| kexec.mk | ||