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Message-ID: <20101025225055.GA6840@redhat.com> Date: Mon, 25 Oct 2010 18:50:55 -0400 From: Dave Jones <davej@...hat.com> To: Linux Kernel <linux-kernel@...r.kernel.org> Subject: conflicting options in makefile ? While diagnosing a ccache problem, I noticed the following command line being used.. [2010-10-25T18:45:16.715078 25689] Executing /usr/bin/cc -D__KERNEL__ -Wall -Wundef -Wstrict-prototypes -Wno-trigraphs -fno-strict-aliasing -fno-common -Werror-implicit-function-declaration -Wno-format-security -fno-delete-null-pointer-checks -Os -m64 -mtune=generic -mno-red-zone -mcmodel=kernel -funit-at-a-time -maccumulate-outgoing-args -fstack-protector -DCONFIG_AS_CFI=1 -DCONFIG_AS_CFI_SIGNAL_FRAME=1 -DCONFIG_AS_CFI_SECTIONS=1 -DCONFIG_AS_FXSAVEQ=1 -pipe -Wno-sign-compare -fno-asynchronous-unwind-tables -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -Wframe-larger-than=2048 -fno-omit-frame-pointer -fno-optimize-sibling-calls -g -femit-struct-debug-baseonly -pg -Wdeclaration-after-statement -Wno-pointer-sign -fno-strict-overflow -fconserve-stack -DCC_HAVE_ASM_GOTO -fno-unit-at-a-time -c -xc /dev/null -o .25644.tmp Note that we pass -funit-at-a-time and -fno-unit-at-a-time. Looking at arch/x86/Makefile, there's a test that adds the -fno-unit-at-a-time. if gcc is < 4.0 (I'm using 4.5) What's happening here? Dave -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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