bug#53780: Automake failing with conditional AC_CONFIG_FILES

[Mike Frysinger]

On 04 Feb 2022 17:12, Valio Valtokari wrote:
> I have a project that supports multiple platforms (windows and linux as of
> right now). To implement testing functionality I use a library that I
> haven't configured for windows in my project yet. As such, my configure.ac
> has these lines:
> 
> AC_CONFIG_FILES([Makefile:src/Makefile])
> AM_COND_IF([OS_LINUX], [
>     PKG_CHECK_MODULES([CHECK], [check>=0.9])
>     AC_CONFIG_FILES([tests/Makefile])
> ], [])
> 
> This seemingly causes automake to crash with:
> 
> automake-1.16: error: Makefile:src/Makefile in @other_input_files
> automake-1.16: @other_input_files = (Makefile:src/Makefile)
> automake-1.16: Please contact <bug-automake@gnu.org>.
>  at /usr/share/automake-1.16/Automake/Channels.pm line 655.
>         Automake::Channels::msg("automake", "", "Makefile:src/Makefile in
> \@other_input_files\x{a}\@other_input_file"...) called at
> /usr/share/automake-1.16/Automake/ChannelDefs.pm line 226
>         Automake::ChannelDefs::prog_error("Makefile:src/Makefile in
> \@other_input_files\x{a}\@other_input_file"...) called at
> /usr/bin/automake-1.16 line 4311
>         Automake::handle_configure("tests/Makefile.am",
> "tests/Makefile.in", "tests/Makefile", "tests/Makefile.in") called at
> /usr/bin/automake-1.16 line 7950
>         Automake::generate_makefile("tests/Makefile.am",
> "tests/Makefile.in") called at /usr/bin/automake-1.16 line 8257
>         Automake::handle_makefile("tests/Makefile.in") called at
> /usr/bin/automake-1.16 line 8269
>         Automake::handle_makefiles_serial() called at
> /usr/bin/automake-1.16 line 8401
> autoreconf: error: automake failed with exit status: 255
> 
> I'm running on msys2. Any help would be appreciated.

can you link to the project/source ?  the snippet you posted isn't complete,
and adding a few more lines doesn't cause automake crash for me.
-mike

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