Re: Optional GTK?

[Mick]

On Sun, 13 Sep 2009 21:21:06 -0400
"Patrick M. Rutkowski" <address@hidden> wrote:

> If I were to run something like AM_PATH_GTK_2_0 in my configure.ac,
> which checks for the presence of GTK, what would I do if GTK wasn't
> found?
> 
> This might be the case on OS X, or on a KDE system.
> 
> I can potentially compile this library of mine with the GTK features
> just left out, there's a lot more to the library that can still be
> useful
> 
> But how do I do that?
> 
> A) Is it possible to get automake to just NOT COMPILE the gtk related
> *.c files based on the autoconf results?
> or
> B) Do I take the gtk related *.c files and wrap them in big "#ifdef
> USE_GTK / #endif" wrappers?
> 
> Is there a standard answer?
> 
> -Patrick

you would use something like:
AC_ARG_ENABLE(gtk_v2,
  [  --disable-gtk_v2        disable gtk v2.0.x support])

if test "x${GTK_CFLAGS}" != "x"; then
        if test "x$enable_gtk_v2" != "xno"; then
                echo yes
        fi
        if test "$enable_threads" != "no"; then
                GTK_LIBS=`pkg-config --libs gtk+-2.0 gthread-2.0
2> /dev/null` else
                GTK_LIBS=`pkg-config --libs gtk+-2.0 2> /dev/null`
        fi
        CFLAGS="${CFLAGS} ${GTK_CFLAGS}"
        LIBS="${LIBS} ${GTK_LIBS}"
        AC_DEFINE([USE_GTK2],[],[])
else
        if test "x$enable_gtk_v2" != "xno"; then
                echo no
        fi
        AM_PATH_GTK(1.2.0, ,
            AC_MSG_WARN(Cannot find GTK: Is gtk-config in path?),
                        gthread)
            AC_MSG_ERROR(Cannot find GTK: Is gtk-config in path?),
gthread)

in configure.in, can't remember what else but I hope this helps

Mik