linux-kernel - Re: [PATCH] kbuild: support byacc as alternative YACC to bison

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Message-ID: <CAK7LNASG4GzaU6SR=ThfJpjrqmC53xmcSMAWqppciWbx3jMgdw@mail.gmail.com>
Date:   Tue, 29 Oct 2019 10:56:05 +0900
From:   Masahiro Yamada <yamada.masahiro@...ionext.com>
To:     Ethan Sommer <e5ten.arch@...il.com>
Cc:     Michal Marek <michal.lkml@...kovi.net>,
        Nathan Chancellor <natechancellor@...il.com>,
        Sedat Dilek <sedat.dilek@...il.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] kbuild: support byacc as alternative YACC to bison

Hi Ethan,

On Tue, Oct 29, 2019 at 10:41 AM Ethan Sommer <e5ten.arch@...il.com> wrote:
>
> > I applied this patch, and tried the latest byacc,
> > but I still cannot build kconfig probably because
> > %destructor is not supported.
> > byacc does not seem to work anyway.
>
> Hi Masahiro, because I hadn't built it in a while I completely forgot
> that to support %destructor byacc needs to be built with
> --enable-btyacc, should I update the commit message to include that
> detail?

OK, I was able to build kconfig with --enable-btyacc.

byacc still cannot build scripts/dtc/dtc-parser.y
Thought?

dtc is not compiled for x86.
Please try ARCH=arm.


masahiro@pug:~/ref/linux$ make ARCH=arm
CROSS_COMPILE=arm-linux-gnueabihf- YACC=/home/masahiro/bin/yacc
scripts/kconfig/conf  --syncconfig Kconfig
  SYSHDR  arch/arm/include/generated/uapi/asm/unistd-common.h
  SYSHDR  arch/arm/include/generated/uapi/asm/unistd-oabi.h
  SYSHDR  arch/arm/include/generated/uapi/asm/unistd-eabi.h
  HOSTCC  scripts/dtc/dtc.o
  HOSTCC  scripts/dtc/flattree.o
  HOSTCC  scripts/dtc/fstree.o
  HOSTCC  scripts/dtc/data.o
  HOSTCC  scripts/dtc/livetree.o
  HOSTCC  scripts/dtc/treesource.o
  HOSTCC  scripts/dtc/srcpos.o
  HOSTCC  scripts/dtc/checks.o
  HOSTCC  scripts/dtc/util.o
  LEX     scripts/dtc/dtc-lexer.lex.c
  YACC    scripts/dtc/dtc-parser.tab.[ch]
/home/masahiro/bin/yacc: e - line 120 of "scripts/dtc/dtc-parser.y",
syntax error
ERROR(&@2, "Header flags don't match earlier ones");
       ^
make[1]: *** [scripts/Makefile.host;17: scripts/dtc/dtc-parser.tab.h] Error 1
make[1]: *** Deleting file 'scripts/dtc/dtc-parser.tab.h'
make[1]: *** [scripts/dtc/dtc-parser.tab.h] Deleting file
'scripts/dtc/dtc-parser.tab.c'
make: *** [Makefile;1260: scripts_dtc] Error 2




-- 
Best Regards
Masahiro Yamada