[MacPorts] #42702: glibtool drops dylibs at link time

[MacPorts]

#42702: glibtool drops dylibs at link time
------------------------+---------------------------------
 Reporter:  jeremyhu@…  |      Owner:  ram@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.2.1
 Keywords:              |       Port:  glibtool webkit-gtk
------------------------+---------------------------------
 VLC fails to build with opencv support because opencv's pkg-config file
 lists paths to dylibs rather than -l<lib> arguments.  This should work
 just fine, but glibtool doesn't like it.  It just drops the dylibs on the
 floor when creating the command line to envoke:

 {{{
 /opt/local/bin/glibtool  --tag=CXX   --mode=link /usr/bin/clang++   -pipe
 -Os -arch x86_64 -stdlib=libc++ -D_INTL_REDIRECT_MACROS
 -I/opt/local/var/macports/build
 /_Users_jeremy_src_macports_trunk_dports_multimedia_VLC-devel/VLC-
 devel/work/VLC-devel-2.1.99/contrib/include -Wall -Wextra -Wsign-compare
 -Wundef -Wpointer-arith -Wvolatile-register-var -fvisibility=hidden
 -ffast-math -funroll-loops -fomit-frame-pointer -avoid-version -module
 -export-symbols-regex ^vlc_entry -shrext .dylib -no-undefined
 ../../compat/libcompat.la ../../src/libvlccore.la  -rpath
 '/opt/local/lib/vlc/plugins/video_filter'  -L/opt/local/lib
 -Wl,-headerpad_max_install_names -arch x86_64
 -Wl,-headerpad_max_install_names -L/opt/local/var/macports/build
 /_Users_jeremy_src_macports_trunk_dports_multimedia_VLC-devel/VLC-
 devel/work/VLC-devel-2.1.99/contrib/lib -o libopencv_example_plugin.la
 libopencv_example_plugin_la-opencv_example.lo
 /opt/local/lib/libopencv_calib3d.dylib
 /opt/local/lib/libopencv_contrib.dylib /opt/local/lib/libopencv_core.dylib
 /opt/local/lib/libopencv_features2d.dylib
 /opt/local/lib/libopencv_flann.dylib /opt/local/lib/libopencv_gpu.dylib
 /opt/local/lib/libopencv_highgui.dylib
 /opt/local/lib/libopencv_imgproc.dylib
 /opt/local/lib/libopencv_legacy.dylib /opt/local/lib/libopencv_ml.dylib
 /opt/local/lib/libopencv_nonfree.dylib
 /opt/local/lib/libopencv_objdetect.dylib
 /opt/local/lib/libopencv_photo.dylib
 /opt/local/lib/libopencv_stitching.dylib
 /opt/local/lib/libopencv_superres.dylib /opt/local/lib/libopencv_ts.a
 /opt/local/lib/libopencv_video.dylib
 /opt/local/lib/libopencv_videostab.dylib

 *** Warning: Linking the shared library libopencv_example_plugin.la
 against the
 *** static library /opt/local/lib/libopencv_ts.a is not portable!
 glibtool: link: rm -fr  .libs/libopencv_example_plugin.exp
 glibtool: link: /usr/bin/nm  .libs/libopencv_example_plugin_la-
 opencv_example.o   | sed -n -e 's/^.*[    ]\([BCDEGRST][BCDEGRST]*\)[
 ][      ]*_\([_A-Za-z][_A-Za-z0-9]*\)$/\1 _\2 \2/p' | sed '/ __gnu_lto/d'
 | /usr/bin/sed 's/.* //' | sort | uniq >
 .libs/libopencv_example_plugin.exp
 glibtool: link: /usr/bin/grep -E -e "^vlc_entry"
 ".libs/libopencv_example_plugin.exp" >
 ".libs/libopencv_example_plugin.expT"
 glibtool: link: mv -f ".libs/libopencv_example_plugin.expT"
 ".libs/libopencv_example_plugin.exp"
 glibtool: link: sed -e 's,^,_,' < .libs/libopencv_example_plugin.exp >
 .libs/libopencv_example_plugin-symbols.expsym
 glibtool: link: /usr/bin/clang++  -o .libs/libopencv_example_plugin.dylib
 -bundle  .libs/libopencv_example_plugin_la-opencv_example.o
 ../../compat/.libs/libcompat.a -L/opt/local/lib
 -L/opt/local/var/macports/build
 /_Users_jeremy_src_macports_trunk_dports_multimedia_VLC-devel/VLC-
 devel/work/VLC-devel-2.1.99/contrib/lib ../../src/.libs/libvlccore.dylib
 -lintl -lidn -liconv -lm /opt/local/lib/libopencv_ts.a  -Os -arch x86_64
 -stdlib=libc++ -Wl,-headerpad_max_install_names -arch x86_64
 -Wl,-headerpad_max_install_names   -Wl,-exported_symbols_list,.libs
 /libopencv_example_plugin-symbols.expsym
 Undefined symbols for architecture x86_64:
   "_cvClearMemStorage", referenced from:
       Filter(filter_t*, picture_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvCreateMemStorage", referenced from:
       OpenFilter(vlc_object_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvGetSeqElem", referenced from:
       Filter(filter_t*, picture_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvHaarDetectObjects", referenced from:
       Filter(filter_t*, picture_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvLoad", referenced from:
       OpenFilter(vlc_object_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvRectangle", referenced from:
       Filter(filter_t*, picture_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvReleaseHaarClassifierCascade", referenced from:
       CloseFilter(vlc_object_t*) in libopencv_example_plugin_la-
 opencv_example.o
   "_cvReleaseMemStorage", referenced from:
       CloseFilter(vlc_object_t*) in libopencv_example_plugin_la-
 opencv_example.o
 ld: symbol(s) not found for architecture x86_64
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/42702>
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