Re: [Tuxmath-devel] tuxmath fails to compile without sdlttf

[David B. <dav...@gm...>]

Hi Volker,

That helps a lot - I just want to make sure I understand correctly.

> This is not a question of pkg-config. It is a question of Autoconf.
> If you collect some helper variables during the checks in configure.ac,
> you can simply include those variables in your *.pc.in file. (something
> like @DEP_PKGS@, @DEP_LIBS@)

Thanks - so I've created the following:
T4K_COMMON_DEP_PKGS - for needed libs that have *.pc files
T4K_COMMON_DEP_LIBS - for needed libs without *.pc files
T4K_COMMON_DEP_LIBS_PRIVATE - for secondary dependencies incurred by
libs without *.pc files.

So the t4k_common.pc.in is now very simple (see below).

For now, I've just hard-coded the previous values into these variables
within configure.ac to be sure the substitution is working as
intended, so the build isn't yet any smarter than before.  So, if I
make sure these variables correctly track the configure options (e.g.
SDL_Pango vs. SDL_ttf, SDL_net vs no network support, etc.), this
should work as intended, if I understand correctly.

Thanks a ton -

David


t4k_common.pc.in: ----------------------------------------------------

# Process with configure script to generate t4k_common.pc file for pkg-config
# NOTE: we rely heavily on substituted output variables from Autoconf
# or Cmake to generate a t4k_common.pc that reflects conditional build
# with optional libraries.

prefix=@prefix@
exec_prefix=@exec_prefix@
libdir=@libdir@
includedir=@includedir@

Name: @PACKAGE_NAME@
Description: Tux4Kids common routines
Version: @VERSION@

# List needed libs that have *.pc files in "Requires:"
Requires: @T4K_COMMON_DEP_PKGS@
# List libs "by hand" that don't have .pc files:
Libs: -l@PACKAGE_TARNAME@ -L${libdir} @T4K_COMMON_DEP_LIBS@
Cflags: -I${includedir}

# List secondary dependencies of libs that don't have *.pc files
# (needed for static linking)
Libs.private: @T4K_COMMON_DEP_LIBS_PRIVATE@