[MacPorts] #39567: pslib stealth dependence on libraries from /usr/local/lib (affects gnudatalanguage)

[MacPorts]

#39567: pslib stealth dependence on libraries from /usr/local/lib (affects
gnudatalanguage)
-------------------------+--------------------------------
 Reporter:  gnwiii@…     |      Owner:  macports-tickets@…
     Type:  enhancement  |     Status:  new
 Priority:  Normal       |  Milestone:
Component:  ports        |    Version:  2.1.3
 Keywords:               |       Port:  pslib
-------------------------+--------------------------------
 This is mainly an attempt to record a potential issue for gnudatalanguage
 users.

 The {{{configure}}} script for pslib searches for graphics libraries in
 {{{/usr}}} and {{{/usr/local}}}:

 {{{
                 for i in ${withval} /usr /usr/local ; do
                         if test -r $i/include/png.h ; then
                                 PNG_LIBDIR=-L$i/lib
                                 PNG_INCLUDEDIR=-I$i/include
                                 PNG_PREFIX=$i
                                 break
                         fi
 }}}

 As a result, systems that have one or more of the graphics libraries
 mentioned in the info file will use the versions from
 {{{/usr/local/lib}}}.
 I don't know if gnudatalanguage actually uses the parts of pslib that
 depend on these libraries, but if the user updates the libraries in
 {{{/usr/local/lib}}} then gnudatalanguage may get a startup error.

 To avoid this macports versions of the graphics libraries in the Portfile:

 {{{
 configure.args-append     --with-png=${prefix} \
                           --with-jpeg=${prefix} \
                           --with-gif=${prefix} \
                           --with-tiff=${prefix}
 }}}

 Note that the gif support is not actually used because the macports
 library files the configure tests.  Also, documentation won't be built
 because configure looks for an obsolete {{{docbook_to_man}}} utility.

 It may also be necessary to provide:

 {{{
 pre-build {
     build.args             LIBS=-lintl
 }
 }}}


 Without this, some systems give runtime errors for missing
 {{{_libintl_setlocale_}}}.  I'm not sure pslib should be calling
 setlocale as that is normally a responsibilty of the calling program.

 CCing the gnudatalanguage maintainer as pslib doesn't appear to be used
 elsewhere and shows "nomaintainer".

-- 
Ticket URL: <https://trac.macports.org/ticket/39567>
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