Re: solaris 10 autoconf check 54 failure

[Ralf Wildenhues]

Hi  D'Arcy,

* D'Arcy A MacIsaac wrote on Wed, Mar 08, 2006 at 09:36:28AM CET:
> during the make check on step 54 I get this:
> 
>  54: AC_PROG_CPP without warnings                 FAILED (c.at:166)
> 
> Attached is the testsuite.log.

Thanks for reporting this.  I can confirm this on Solaris 10, even with
CVS Autoconf.  The issue is that /lib/cpp is found as preprocessor, it
does not understand the `#error' directive, but `#error' is used in
system headers:
$ echo '#include <stdio.h>' | /lib/cpp - >/dev/null; echo $?
"/usr/include/sys/isa_defs.h", line 500: undefined control
2
$ sed -n 500p /usr/include/sys/isa_defs.h
#error "ISA not supported"

I think it's only the test that needs adjusted though, not the Autoconf
macros: they correctly choose `cc -E' as preprocessor, which does
understand `#error':

$ echo '#include <stdio.h>' | cc -E - >/dev/null; echo $?
0

Cheers,
Ralf


> ## ------------------------ ##
> ## Summary of the failures. ##
> ## ------------------------ ##
> Failed tests:
> GNU Autoconf 2.59 test suite test groups:
> 
>  NUM: FILENAME:LINE      TEST-GROUP-NAME
>       KEYWORDS
> 
>   54: c.at:142           AC_PROG_CPP without warnings

> ## ---------------------- ##
> ## Detailed failed tests. ##
> ## ---------------------- ##
> 
> 54. c.at:142: testing ...
> c.at:145: /lib/cpp </dev/null || exit 77
*snip*

> checking how to run the C preprocessor... ./mycpp
> checking for egrep... egrep
> checking for ANSI C header files... yes
> checking for sys/types.h... yes
> checking for sys/stat.h... yes
> checking for stdlib.h... yes
> checking for string.h... yes
> checking for memory.h... yes
> checking for strings.h... yes
> checking for inttypes.h... yes
> checking for stdint.h... yes
> checking for unistd.h... yes
> checking stdio.h usability... yes
> checking stdio.h presence... no
> checking for stdio.h... no
> checking autoconf_io.h usability... no
> checking autoconf_io.h presence... no
> checking for autoconf_io.h... no
> configure: creating ./config.status
> config.status: creating config.h
> c.at:161: cat state-ls.after
> No differences encountered
> No differences encountered
> c.at:166: sed '/#/!d
> /INTTYPES/d
> /MEMORY/d
> /PACKAGE_/d
> /STDC_HEADERS/d
> /STDINT/d
> /STDLIB/d
> /STRING/d
> /SYS_STAT/d
> /SYS_TYPES/d
> /UNISTD/d' config.h
> No differences encountered
> --- - Tue Mar  7 06:09:02 2006
> +++ /usr/tmp/local/autoconf/016/autoconf-2.59/tests/testsuite.dir/at-stdout   
> Tue Mar  7 06:09:02 2006
> @@ -1,3 +1,3 @@
>  /* #undef HAVE_AUTOCONF_IO_H */
> -#define HAVE_STDIO_H 1
> +/* #undef HAVE_STDIO_H */
>  
> 54. c.at:142: 54. AC_PROG_CPP without warnings (c.at:142): FAILED (c.at:166)