Messages in this thread | | | Date | Fri, 29 Sep 2017 13:00:56 -0700 | From | Guenter Roeck <> | Subject | Problems compiling with KCFLAGS="-frecord-gcc-switches" |
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Hi Josh,
when trying to compile an image with KCFLAGS="-frecord-gcc-switches", I get the folllowing build warning/error.
make allmodconfig KCFLAGS="-frecord-gcc-switches" make arch/x86/kvm/emulate.o ./tools/objtool/objtool check --no-unreachable "arch/x86/kvm/emulate.o"
arch/x86/kvm/emulate.o: warning: objtool: .GCC.command.line+0x0: special: can't find new instruction
Building a full image aborts with:
WARNING: arch/x86/kvm/kvm.o(__ex_table+0x4c): Section mismatch in reference from the (unknown reference) (unknown) to the variable .GCC.command.line:kvm_fastop_exception FATAL: The relocation at __ex_table+0x4c references section ".GCC.command.line" which is not executable, IOW the kernel will fault if it ever tries to jump to it. Something is seriously wrong and should be fixed. make[2]: *** [arch/x86/kvm/kvm.o] Error 1
Any idea what might cause this problem ?
Thanks, Guenter
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