fd6410c6f9
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>
48 lines
1.3 KiB
Makefile
48 lines
1.3 KiB
Makefile
################################################################################
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#
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# kexec
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#
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################################################################################
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KEXEC_VERSION = 2.0.28
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KEXEC_SOURCE = kexec-tools-$(KEXEC_VERSION).tar.xz
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KEXEC_SITE = $(BR2_KERNEL_MIRROR)/linux/utils/kernel/kexec
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KEXEC_LICENSE = GPL-2.0
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KEXEC_LICENSE_FILES = COPYING
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KEXEC_CPE_ID_PRODUCT = kexec-tools
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KEXEC_CPE_ID_VENDOR = kexec-tools_project
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KEXEC_SELINUX_MODULES = kdump
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# Makefile expects $STRIP -o to work, so needed for !BR2_STRIP_strip
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KEXEC_MAKE_OPTS = STRIP="$(TARGET_CROSS)strip"
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# kexec requires at least -O1 optimization level. Its code uses a
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# trick to detect unaligned accesses at link time which needs at least
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# dead-code-removal to work. See put/get_unaligned() macros in
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# kexec/kexec.h
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ifeq ($(BR2_OPTIMIZE_0),y)
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KEXEC_CONF_ENV += CFLAGS="$(TARGET_CFLAGS) -O1"
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endif
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ifeq ($(BR2_PACKAGE_KEXEC_ZLIB),y)
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KEXEC_CONF_OPTS += --with-zlib
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KEXEC_DEPENDENCIES += zlib
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else
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KEXEC_CONF_OPTS += --without-zlib
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endif
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ifeq ($(BR2_PACKAGE_XZ),y)
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KEXEC_CONF_OPTS += --with-lzma
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KEXEC_DEPENDENCIES += xz
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else
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KEXEC_CONF_OPTS += --without-lzma
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endif
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define KEXEC_REMOVE_LIB_TOOLS
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rm -rf $(TARGET_DIR)/usr/lib/kexec-tools
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endef
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KEXEC_POST_INSTALL_TARGET_HOOKS += KEXEC_REMOVE_LIB_TOOLS
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$(eval $(autotools-package))
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