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SubjectRe: gcc-5: error: -gz is not supported in this configuration
On 2020-06-09, Nick Desaulniers wrote:
>On Tue, Jun 9, 2020 at 6:12 AM kernel test robot <lkp@intel.com> wrote:
>>
>> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head: abfbb29297c27e3f101f348dc9e467b0fe70f919
>> commit: 10e68b02c861ccf2b3adb59d3f0c10dc6b5e3ace Makefile: support compressed debug info
>> date: 12 days ago
>> config: x86_64-randconfig-r032-20200609 (attached as .config)
>> compiler: gcc-5 (Ubuntu 5.5.0-12ubuntu1) 5.5.0 20171010
>> reproduce (this is a W=1 build):
>> git checkout 10e68b02c861ccf2b3adb59d3f0c10dc6b5e3ace
>> # save the attached .config to linux build tree
>> make W=1 ARCH=x86_64
>>
>> If you fix the issue, kindly add following tag as appropriate
>> Reported-by: kernel test robot <lkp@intel.com>
>>
>> All errors (new ones prefixed by >>, old ones prefixed by <<):
>>
>> >> gcc-5: error: -gz is not supported in this configuration
>
>Hmm...I wonder if the feature detection is incomplete? I suspect it's
>possible to not depend on zlib.
>
>> make[2]: *** [scripts/Makefile.build:277: scripts/mod/empty.o] Error 1
>> make[2]: Target '__build' not remade because of errors.
>> make[1]: *** [Makefile:1169: prepare0] Error 2
>> make[1]: Target 'prepare' not remade because of errors.
>> make: *** [Makefile:185: __sub-make] Error 2

The output of gcc-5 -v --version on that machine may help. The
convoluted gcc_cv_ld_compress_de logic in gcc/configure.ac may be
related, but I can't find any mistake that our
CONFIG_DEBUG_INFO_COMPRESSED conditions may make.

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