[MacPorts] #16056: poppler -- new version -- more variants

[MacPorts]

#16056: poppler -- new version -- more variants
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  Reporter:  jens.traube at t-online.de  |       Owner:  macports-tickets at lists.macosforge.org
      Type:  enhancement              |      Status:  new                                  
  Priority:  Normal                   |   Milestone:  Port Enhancements                    
 Component:  ports                    |     Version:  1.6.0                                
Resolution:                           |    Keywords:  pdf, qt4                             
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Comment (by jens.traube at t-online.de):

 Replying to [comment:3 rhwood at macports.org]:
 > This seems like an excessively complex solution to a simple issue that
 may not be an issue...
 >
 > Some notes:
 >
 > Abiword going forward is going to be requiring gtk and all that entails.
 I would simply remove the abiword variant and make libxml2 a  dependency
 in all cases (libxml2 is small with only a couple of dependencies).
 >
 > Since poppler is not (as far as I can tell) dependent on X11 unless gtk
 or qt are, I would simply remove the dependencies on XFree86 and xrender
 from the port.
 >
 > I would make the variants all separate, so that instead of installing
 '''poppler +qt4Splash''', I would install '''poppler +qt4 +Splash''' this
 will make the portfile maintainer's life much simpler.

 You are right about variant "abiword". Anybody, who have port "abiword"
 installed (from source), must have installed port "ImageMagick" and its
 dependencies (XFree86, freetype, fontconfig, libiconv, expat, zlib,
 libpng, jpeg, tiff, and libxml2).

 But about the dependencies on XFree86 you are wrong. I installed all
 variants (except qt3Splash) to test them and to check the dynamic
 libraries. I used the command line tool "otool" with option "-L" to get a
 list of the needed libraries. The variants "glibSplash" and "glibCairo"
 depend on ports "XFree86" and "xrender". The ports "gtk2", "pango", and
 "cairo" are all dependent on XFree86, but these three ports can be build
 without x11, there is a variant "no_x11". I checked this and compiled
 these ports without x11 bindings, and then compiled poppler again with
 variant "quartz". Then library "libpoppler-glib.3.0.0.dylib" is not
 dependend on XFree86 and xrender.

 These dependencies are indirect. For instance, in the source files of
 poppler you can not find any inclusion of a header file <expat.h> or
 <iconv.h>. I checked this: grep -lrE ".*<expat[.]h>.*" ./
 Nevertheless, poppler depends on port "expat" and "libiconv" (any
 variant).

 To your last argument: This was my first attempt to enhance the portfile.
 I had at first these "atomic" variants "qt3", "qt4", "glib", "splash",
 "cairo". But these variants cannot combined freely, there is no
 installation "poppler+splash+cairo". If you choose a frontend qt4 or glib,
 you must also choose a backend "splash" or "cairo", they are logically
 dependend. Therefore I revised the portfile and invented these "molecule"
 variants.

-- 
Ticket URL: <http://trac.macports.org/ticket/16056#comment:4>
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