NetBSD Problem Report #59658

From gson@gson.org  Wed Sep 17 18:28:12 2025
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Date: Wed, 17 Sep 2025 21:28:08 +0300 (EEST)
From: gson@gson.org (Andreas Gustafsson)
Reply-To: gson@gson.org (Andreas Gustafsson)
To: gnats-bugs@NetBSD.org
Subject: Building lang/gcc12 fails on NetBSD/macppc
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>Number:         59658
>Category:       pkg
>Synopsis:       Building lang/gcc12 fails on NetBSD/macppc
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 17 18:30:00 +0000 2025
>Originator:     Andreas Gustafsson
>Release:        NetBSD-current, source date 2025.09.15.17.32.01
>Organization:

>Environment:
System: NetBSD
Architecture: powerpc
Machine: macppc
>Description:

Building the pkgsrc-current lang/gcc12 package on
NetBSD-current/macppc fails like this:

  [...]
  Running configure in multilib subdirs soft-float
  pwd: /usr/pkgsrc/lang/gcc12/work/build/powerpc--netbsd
  [...]
  checking whether we are cross compiling... configure: error: in `/usr/pkgsrc/lang/gcc12/work/build/powerpc--netbsd/soft-float/libgcc':
  configure: error: cannot run C compiled programs.
  If you meant to cross compile, use `--host'.
  See `config.log' for more details
  gmake[2]: *** [Makefile:22318: configure-stage1-target-libgcc] Error 1
  gmake[2]: Leaving directory '/usr/pkgsrc/lang/gcc12/work/build'
  gmake[1]: *** [Makefile:28487: stage1-bubble] Error 2
  gmake[1]: Leaving directory '/usr/pkgsrc/lang/gcc12/work/build'
  gmake: *** [Makefile:1076: all] Error 2
  *** Error code 2

  Stop.
  make[1]: stopped making "install" in /usr/pkgsrc/lang/gcc12
  *** Error code 1

Here is a simplified version of the failing autoconf test:

  $ cat conftest.c
  #include <stdio.h>
  int main() {
      fopen("conftest.out", "w");
      return 0;
  }
  $ /usr/pkgsrc/lang/gcc12/work/build/./gcc/xgcc -B/usr/pkgsrc/lang/gcc12/work/build/./gcc/ -B/usr/pkg/gcc12/powerpc--netbsd/bin/ -B/usr/pkg/gcc12/powerpc--netbsd/lib/ -isystem /usr/pkg/gcc12/powerpc--netbsd/include -isystem /usr/pkg/gcc12/powerpc--netbsd/sys-include -fno-checking  -msoft-float -fPIC -mstrict-align -o conftest -g -O2 -I/usr/include  -Wl,-zrelro conftest.c
  $ ./conftest
  [3]   Abort trap              ./conftest

If I run the conftest program from gdb, it doesn't crash.

If I remove the -fPIC, it doesn't crash.

>How-To-Repeat:

>Fix:

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