[MacPorts] #50275: MyPaint-devel: Libs entry of libmypaint.pc is corrupted/malformed

[MacPorts]

#50275: MyPaint-devel: Libs entry of libmypaint.pc is corrupted/malformed
----------------------+---------------------------
 Reporter:  devans@…  |      Owner:  ryandesign@…
     Type:  defect    |     Status:  new
 Priority:  Normal    |  Milestone:
Component:  ports     |    Version:
 Keywords:            |       Port:  MyPaint-devel
----------------------+---------------------------
 Recent builds from the gimp git repository have a mandatory dependency on
 libmypaint >= 1.1.  However, building with MyPaint-devel fails as follows:
 {{{
 libtool: link: /usr/bin/clang -pipe -Os -arch x86_64 -Wall -Wdeclaration-
 after-statement -Wmissing-prototypes -Werror=missing-prototypes -Wstrict-
 prototypes -Wmissing-declarations -Winit-self -Wpointer-arith -Wold-style-
 definition -Wmissing-format-attribute -Wformat-security -Wtype-limits
 -fno-common -fdiagnostics-show-option -Wreturn-type -Wl,-u
 -Wl,_gimp_vectors_undo_get_type -Wl,-u -Wl,_gimp_vectors_mod_undo_get_type
 -Wl,-u -Wl,_gimp_param_spec_duplicate -Wl,-u -Wl,_gimp_operations_init
 -Wl,-u -Wl,_xcf_init -Wl,-u -Wl,_internal_procs_init -Wl,-u
 -Wl,_gimp_plug_in_manager_restore -Wl,-u -Wl,_gimp_pdb_compat_param_spec
 -Wl,-headerpad_max_install_names -arch x86_64 -o .libs/gimp-console-2.9
 gimp_console_2.9-app.o gimp_console_2.9-errors.o
 gimp_console_2.9-language.o gimp_console_2.9-sanity.o
 gimp_console_2.9-signals.o gimp_console_2.9-tests.o
 gimp_console_2.9-unique.o gimp_console_2.9-units.o
 gimp_console_2.9-version.o gimp_console_2.9-gimp-debug.o gimp_console_2.9
 -gimp-log.o gimp_console_2.9-main.o  -L/opt/local/lib xcf/libappxcf.a pdb
 /libappinternal-procs.a pdb/libapppdb.a plug-in/libappplug-in.a
 vectors/libappvectors.a core/libappcore.a file/libappfile.a
 text/libapptext.a paint/libapppaint.a operations/libappoperations.a
 gegl/libappgegl.a config/libappconfig.a
 ../libgimpconfig/.libs/libgimpconfig-2.0.dylib
 ../libgimpmath/.libs/libgimpmath-2.0.dylib
 ../libgimpthumb/.libs/libgimpthumb-2.0.dylib
 ../libgimpcolor/.libs/libgimpcolor-2.0.dylib
 ../libgimpmodule/.libs/libgimpmodule-2.0.dylib
 /opt/local/var/macports/build/_opt_macports_trunk_dports_graphics_gimp2-devel/gimp2-devel/work
 /gimp-
 3e18b3bbfb2cea3711993027ac814af1d625fe28/libgimpconfig/.libs/libgimpconfig-2.0.dylib
 /opt/local/var/macports/build/_opt_macports_trunk_dports_graphics_gimp2-devel/gimp2-devel/work
 /gimp-
 3e18b3bbfb2cea3711993027ac814af1d625fe28/libgimpcolor/.libs/libgimpcolor-2.0.dylib
 /opt/local/var/macports/build/_opt_macports_trunk_dports_graphics_gimp2-devel/gimp2-devel/work
 /gimp-
 3e18b3bbfb2cea3711993027ac814af1d625fe28/libgimpmath/.libs/libgimpmath-2.0.dylib
 /opt/local/var/macports/build/_opt_macports_trunk_dports_graphics_gimp2-devel/gimp2-devel/work
 /gimp-
 3e18b3bbfb2cea3711993027ac814af1d625fe28/libgimpbase/.libs/libgimpbase-2.0.dylib
 ../libgimpbase/.libs/libgimpbase-2.0.dylib -lgdk_pixbuf-2.0
 -lpangocairo-1.0 -lpangoft2-1.0 -lpango-1.0 -lfontconfig -lfreetype
 -lharfbuzz -lcairo -lgegl-0.3 -lgegl-npd-0.3 -lgmodule-2.0 -ljson-glib-1.0
 -lgio-2.0 -lbabl-0.1 -lgexiv2 -lexiv2 -lgobject-2.0 -lglib-2.0 -llcms2 -lz
 -lmypaint -lm-lintl -ljson-c -lintl -lm -ljpeg -framework Cocoa
 ld: library not found for -lm-lintl
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 }}}

 This error can be seen to be coming from a corrupted/malformed Libs: entry
 in MyPaint-devel's libmypaint.pc:
 {{{
 $ pkg-config --libs libmypaint
 -L/opt/local/lib -lmypaint -lm-lintl -ljson-c
 $ grep Libs: /opt/local/lib/pkgconfig/libmypaint.pc
 Libs: -L${libdir} -lmypaint -lm-lintl
 }}}

 The template from which this is generated appears to be
 ${worksrcpath}/brushlib/pkgconfig.pc.in which initially contains the line
 {{{
 $ grep Libs: pkgconfig.pc.in
 Libs: -L${libdir} -l at LIBNAME@ @LIBS@ @LINKFLAGS@
 }}}

 So it appears that the expansion of @LIBS@ is the culprit, although how
 scons does this is beyond me at this point.

 Since this is now a mandatory dependency, further updates to gimp2-devel,
 gimp3-devel are blocked until this can be fixed.  See also #48278.

 Thanks in advance for any help you can provide.

-- 
Ticket URL: <https://trac.macports.org/ticket/50275>
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