autoconf help needed

autoconf help needed

[Steve Kargl]

I'm currently writing gfortran intrinsic procedures to
achieve backwards compatibility with g77.  I know very
little about autoconf (and friends), so I'm seeking advice.

I need to test that struct stat has the 3 members
st_blksize, st_rdev, and st_blocks.  I know my
code needs for example

#if HAVE_ST_BLKSIZE
  sarray[11] = buf.st_blksize;
#else
  sarray[11] = -1;
#endif

but I don't know how to make configure properly set
HAVE_ST_BLKSIZE.

-- 
Steve

Re: autoconf help needed

[Aaron W. LaFramboise]

Steve Kargl wrote:

> I need to test that struct stat has the 3 members
> st_blksize, st_rdev, and st_blocks.  I know my
> code needs for example

See "Particular Structure Checks" and "Generic Structure Checks" in the
Autoconf manual, availible at
<http://www.gnu.org/software/autoconf/manual/autoconf-2.57/html_mono/autoconf.html#SEC56>.
 All you need to do is put the required macros in configure.ac, then
regenerate configure with autoconf and config.h with autoheader.

Hope this helps,

Aaron W. LaFramboise

Re: autoconf help needed

[Arnaud Desitter]

----- Original Message ----- 
From: "Steve Kargl" <sgk@troutmask.apl.washington.edu>
Newsgroups: gmane.comp.gcc.devel
Sent: Wednesday, November 17, 2004 7:58 PM
Subject: autoconf help needed


> I'm currently writing gfortran intrinsic procedures to
> achieve backwards compatibility with g77.  I know very
> little about autoconf (and friends), so I'm seeking advice.
> 
> I need to test that struct stat has the 3 members
> st_blksize, st_rdev, and st_blocks.  I know my
> code needs for example
> 
> #if HAVE_ST_BLKSIZE
>  sarray[11] = buf.st_blksize;
> #else
>  sarray[11] = -1;
> #endif
> 
> but I don't know how to make configure properly set
> HAVE_ST_BLKSIZE.

Try:
AC_CHECK_MEMBERS([struct stat.st_blksize])

which will define HAVE_STRUCT_STAT_ST_BLKSIZE

Regards,