Re: [PATCH v6 2/2] Kbuild: implement support for DWARF v5

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On Fri, Jan 29, 2021 at 01:05:56PM -0800, Nick Desaulniers wrote:
> > Wasn't that fixed in GAS?
> > https://sourceware.org/bugzilla/show_bug.cgi?id=27195
> 
> $ make LLVM=1 -j72 defconfig
> $ ./scripts/config -e DEBUG_INFO -e DEBUG_INFO_DWARF5
> $ make LLVM=1 -j72
> ...
> /tmp/init-d50d89.s: Assembler messages:
> /tmp/init-d50d89.s:10: Error: file number less than one
> /tmp/init-d50d89.s:11: Error: junk at end of line, first unrecognized
> character is `m'
> 
> which is https://sourceware.org/bugzilla/show_bug.cgi?id=25611.
> 
> $ as --version | head -n1
> GNU assembler (GNU Binutils for Debian) 2.35.1
> 
> Maybe GAS should not need to be told -gdwarf-5 to parse these?  Then
> we would not need to pass -Wa,-gdwarf-5 via clang with
> -no-integrated-as.

That is what sw#27195 is about, just try current binutils 2.35, 2.36 or
trunk branches.

	Jakub




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