Re: Bug#593838: autoconf: macro AX_CFLAGS_GCC_OPTION does not work with equation argument (as '-std=c99')

[Ralf Wildenhues]

tags + upstream
thanks

[ http://bugs.debian.org/593838 ]

Hi Jerome,

* Jerome BENOIT wrote on Sat, Aug 21, 2010 at 02:58:28PM CEST:
> Version: 2.67-2

> AX_CFLAGS_GCC_OPTION(-std=c99)
> 
> produces a boggus configure script.

Confirmed with upstream git Autoconf:

cat >configure.ac <<\END
AC_INIT
AX_CFLAGS_GCC_OPTION(-std=c99)
END
aclocal -I /path/to/autoconf-archive/m4
autoconf
./configure

[...]
checking CFLAGS for gcc -std=c99... ./configure: line 2493: 
ax_cv_cflags_gcc_option__std_c99=no, unknown: command not found
./configure: line 2516: ax_cv_cflags_gcc_option__std_c99=-std=c99: command not 
found

> Because it appeared that the trouble comes
> from the equal (`=`) I guess it is an autoconf
> issue: line as
> 
> AX_CFLAGS_GCC_OPTION(-Wno-unused-function)
> 
> works well.
> 
> Note that with the previous version of autoconf (2.65-4) everything
> was fine. As a matter of fact, I suspect that the issue may be
> related to bug #593546 , but I can not confirm this part of the story.

Related yes, but #593546 is about '*' and this is about '='.

Thanks for the report,
Ralf