Passing make flags to a dependency

[Michael C. Shultz]

On Sunday 06 February 2005 12:05 pm, you wrote:
> Thanks Mike,
>
> On Sun, Feb 06, 2005 at 11:01:07AM -0800, Michael C. Shultz wrote:
> > This is going to be a can of worms for you to automate, here are a
> > few reasons why:
> >
> > What if apache2 is all ready installed without SSL turned on?
> > What if the user wants other features besides SSL?
> >
> > Suggestion:  Test for a library that will only exist if apache2 has
> > been installed with WITH_SSL_MODULES=yes and if that library is
> > missing then have your port refuse to build with a message that
> > apache2 must be built with WITH_SSL_MODULES=yes.
>
> This is a good point.  I could change the scope of this dependency to
> be "SSL would be a good idea".   Going on that, is there a way that I
> could specify that SSL be turned on if apache2 does get built by my
> port, else give a warning that it's a Good Idea and/or bug out?
>
> -m

Here are a few ideas:

in your ports/{catagory}/{portname}/Makefile

post-configure:
	if test -e ${PREFIX}/lib/{library of apache SSL file}
	then
		cd ${PORTSDIR}/www/apache2;make clean;make WITH_SSL_MODULES=yes	\ 
install clean
	fi

Or if you do it in configure.ac

If the test for apache2's library fails you do the following to run a 
command:

if test "x$target_os" ="FreeBSD"; then
AC_CONFIG_COMMANDS_PRE(cd ${PORTSDIR}/www/apache2;make clean;make \ 
WITH_SSL_MODULES=yes  install clean)
else
 ### display a message about adding apache##
fi

How to test for libraries in configure.ac is going to require some 
research on your part, the advantage to doing it here is then your
port is linux/other UNIX's friendly and you keep the FreeBSD Makefile
simple. 

NOTE: These scripts are off of the top of my head and are guaranteed not 
to work, they are meant only to show you how to approach the problem.

-Mike