[Bug general/29158] New: 0.187 fails to build with gcc-10: #error "Please include config.h first."

[Bug general/29158] New: 0.187 fails to build with gcc-10: #error "Please include config.h first."

[yuri at tsoft dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

            Bug ID: 29158
           Summary: 0.187 fails to build with gcc-10: #error "Please
                    include config.h first."
           Product: elfutils
           Version: unspecified
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: general
          Assignee: unassigned at sourceware dot org
          Reporter: yuri at tsoft dot com
                CC: elfutils-devel at sourceware dot org
  Target Milestone: ---

In file included from color.c:34:
/usr/local/share/gnulib/lib/argp.h:583:3: error: #error "Please include
config.h first."
  583 |  #error "Please include config.h first."
      |   ^~~~~
/usr/local/share/gnulib/lib/argp.h:585:1: error: unknown type name
'_GL_INLINE_HEADER_BEGIN'
  585 | _GL_INLINE_HEADER_BEGIN
      | ^~~~~~~~~~~~~~~~~~~~~~~
/usr/local/share/gnulib/lib/argp.h:616:9: error: expected ';' before 'void'
  616 | ARGP_EI void
      |         ^~~~
/usr/local/share/gnulib/lib/argp.h:622:9: error: expected ';' before 'int'
  622 | ARGP_EI int
      |         ^~~
/usr/local/share/gnulib/lib/argp.h:634:9: error: expected ';' before 'int'
  634 | ARGP_EI int
      |         ^~~
/usr/local/share/gnulib/lib/argp.h:645:22: error: expected ';' before 'struct'
  645 | _GL_INLINE_HEADER_END
      |                      ^
      |                      ;



OS: FreeBSD 13

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mark at klomp dot org

--- Comment #1 from Mark Wielaard <mark at klomp dot org> ---
Normally glibc provides argp.
I think this means you integrated gnulib argp incorrectly.
How do you configure and what does config.log say about argp?

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[yuri at tsoft dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #2 from yuri at tsoft dot com ---
configure arguments:
> --program-prefix=eu- --disable-debuginfod --enable-nls --prefix=/usr/local

configure output:
> checking for library containing argp_parse... none required

config.log file: https://people.freebsd.org/~yuri/elfutils-config.log

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[yuri at tsoft dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #3 from yuri at tsoft dot com ---
Also:
* the problem only exists with gcc, and not with clang-12.
* 0.179 didn't have such problem, so this is a regression.

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #4 from Mark Wielaard <mark at klomp dot org> ---
You might want to ask someone who knows about how freebsd provides argp to see
if they understand why your CFLAGS seem to contain
-I/usr/local/share/gnulib/lib and your LDFLAGS contain
/usr/local/lib/libargp.so. That seems to confuse the build.

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[yuri at tsoft dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #5 from yuri at tsoft dot com ---
The port adds -I/usr/local/share/gnulib/lib and
LDFLAGS=/usr/local/lib/libargp.so - otherwise it doesn't find argp.

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #6 from Mark Wielaard <mark at klomp dot org> ---
Sorry you have to ask whoever added -I/usr/local/share/gnulib/lib to CFLAGS how
that is supposed to work. Obviously the argp.h header found there isn't usable
as is. Normally people build against glibc or argp-standalone.

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[yuri at tsoft dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #7 from yuri at tsoft dot com ---
(In reply to Mark Wielaard from comment #6)
> Sorry you have to ask whoever added -I/usr/local/share/gnulib/lib to CFLAGS
> how that is supposed to work. Obviously the argp.h header found there isn't
> usable as is. Normally people build against glibc or argp-standalone.

I added these flags to solve build failures.

This works when built with clang.

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[yuri at tsoft dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

--- Comment #8 from yuri at tsoft dot com ---
It might be that clang-built and gcc-built code is just compatible.
Not sure if this is the case here.

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[Bug general/29158] 0.187 fails to build with gcc-10: #error "Please include config.h first."

[mark at klomp dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=29158

Mark Wielaard <mark at klomp dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |WONTFIX
             Status|UNCONFIRMED                 |RESOLVED

--- Comment #9 from Mark Wielaard <mark at klomp dot org> ---
This is not an elfutils problem, but an issue with the argp replacement
configure/flags used.

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