Re: HOWTO check for headers and libs in various directories?

[Daniele Arena]

Hi Vaclav,

I had the same problem with MySQL and other external packages, and I
couldn't find anything really appropriate. The smartest thing I could do
was to hack configure.in in this way:

<snip>
dnl
dnl MySQL include directory
dnl

AC_ARG_WITH(mysqlinc, 
        [  --with-mysqlinc=DIR        DIR=path of MySQL include 
dir[$ac_default_prefix/mysql/include]],
        if test [ x$withval != x ] -a [ -d $withval ]; then
          mysqlincdir=$withval
        else
          echo "Please specify a suitable MySQL include directory: 
--with-mysqlinc=DIR"; exit 1
        fi ,
        mysqlincdir=$ac_default_prefix/mysql/include)

AC_CHECK_FILE($mysqlincdir/mysql.h, , 
              echo "MySQL include directory does not contain mysql.h !";
              echo "Please specify a suitable MySQL include directory:
--with-mysqlinc=DIR"; exit 1)

AC_SUBST(mysqlincdir)

</snip>

And the same for "mysqllib" (but there I
AC_CHECK_FILE($mysqlincdir/libmysqlclient.a)). 

This way you need to specify "configure --with-mysqlinc=...
--with-mysqllib=..." (it's better to wrap it in a script).

If you are pretty sure that MySQL will be installed as
$something/include/mysql and $something/lib/mysql, then you might only
need one of these to look for $something and say "configure
--with-mysql=...". But I have a host where the installation is
/usr/local/mysql/include and /usr/local/mysql/lib, so out of luck there...

Anyway, I don't consider myself very smart, nor very experienced with
autoconf, so if anyone else out there has solved the problem in a more
elegant way, please let me(us!) know...

Cheers,

Daniele.

On Mon, 8 Jan 2001, Vaclav Haisman wrote:

> 
> Hi,
> 
> I need to write autoconf test that would search for mysql.h in some
> directories and then put that directory into INCLUDES, I also want
> similar thing for libmysqlclient, but I didn't find any suitable macro in
> documentation. Could you please give me some hints how to do that?
> 
> Vaclav Haisman
> 
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