Re: [bug-gnulib] regex problems

[Sam Steingold]

> * Bruno Haible <address@hidden> [2005-08-03 22:42:04 +0200]:
>
> Sam Steingold wrote:
>> when trying to upgrade to the latest gnulib regexp, I encountered the
>> following problems:
>>
>> 1. g++ cannot compile regexp:
>>
>> ./regex.h:569: error: expected primary-expression before "__restrict__"
>> ./regex.h:569: error: expected `]' before "__restrict__"
>> ./regex.h:569: error: expected `,' or `...' before "__restrict__"
>
> This patch should work. No version of g++ in the 3.2.*, 3.3.*, 3.4.*,
> 4.0.[01] series supports the [__restrict] syntax.
>
> *** regex.h   7 Jul 2005 08:08:39 -0000       1.25
> --- regex.h   3 Aug 2005 20:36:47 -0000
> ***************
> *** 552,560 ****
>   #  endif
>   # endif
>   #endif
> ! /* gcc 3.1 and up support the [restrict] syntax.  */
>   #ifndef __restrict_arr
> ! # if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
>   #  define __restrict_arr __restrict
>   # else
>   #  define __restrict_arr
> --- 552,560 ----
>   #  endif
>   # endif
>   #endif
> ! /* gcc 3.1 and up support the [restrict] syntax, but g++ doesn't.  */
>   #ifndef __restrict_arr
> ! # if (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)) && !defined 
> __cplusplus
>   #  define __restrict_arr __restrict
>   # else
>   #  define __restrict_arr

will you check this into the gnulib CVS?

>> 2. autoconf does not recognize AC_CHECK_HEADERS_ONCE even though I put
>>    onceonly.m4 right next to the files that use it in my m4 directory:
>>
>> configure:5675: error: possibly undefined macro: AC_CHECK_HEADERS_ONCE
>>       If this token and others are legitimate, please use m4_pattern_allow.
>>       See the Autoconf documentation.
>> configure:5676: error: possibly undefined macro: AC_CHECK_FUNCS_ONCE
>
> Does the definition of AC_CHECK_HEADERS_ONCE also find its way into
> the aclocal.m4 file? (Remember that autoconf doesn't look at a
> directory of m4 files; it looks at an aclocal.m4 file in the current
> directory.) If yes, the cause is likely to be over-quoting in a .m4 or
> configure.ac file.

no, aclocal.m4 does not have the definition.
(aclocal is generated by a rule in Makefile.devel:

src/autoconf/aclocal.m4 : $(wildcard src/m4/*.m4) $(addsuffix .in,$(CONFIGURES))
        egrep '(AC_INIT|AC_PREREQ)' src/configure.in > configure.ac
        cat $(addsuffix .in,$(CONFIGURES)) | egrep -v 
'(AC_INIT|AC_CONFIG_HEADER|AC_OUTPUT|AC_CONFIG_FILE.*(Makefile|link\.sh)|_CANONICAL_|AC_PREREQ)'
 >> configure.ac
        echo AC_OUTPUT >> configure.ac
        aclocal -I `pwd`/src/m4 --output=src/autoconf/aclocal.m4
        $(RM) configure.ac

)

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
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