gd2 @2.1.0: ld: library not found for -lvpx

[pachecomarc@…]

gnuplot @4.6.3_2+aquaterm+luaterm+pangocairo+x11: fails to build on osx 10.8.4 with this error:

Error: org.macports.build for port gnuplot returned: command execution failed
Please see the log file for port gnuplot for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_math_gnuplot/gnuplot/main.log
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port gnuplot failed

:info:build /usr/bin/clang++  -pipe -Os -arch x86_64  -L/opt/local/lib -Wl,-headerpad_max_install_names -arch x86_64 -L/opt/local/lib -L/opt/local/lib -Wl,-headerpad_max_install_names -L/opt/local/lib -L/opt/local/lib -o gnuplot alloc.o axis.o binary.o breaders.o color.o command.o contour.o datafile.o dynarray.o eval.o fit.o gadgets.o getcolor.o graph3d.o graphics.o help.o hidden3d.o history.o internal.o interpol.o matrix.o misc.o mouse.o parse.o plot.o plot2d.o plot3d.o pm3d.o readline.o save.o scanner.o set.o show.o specfun.o standard.o stats.o stdfn.o tables.o tabulate.o term.o time.o unset.o util.o util3d.o variable.o version.o  gp_cairo.o gp_cairo_helpers.o    -lreadline  -lncurses  -lz -lgd -lgd -ljpeg -lz -L/opt/local/lib -lpng15 -L/opt/local/lib -lfreetype -L/opt/local/lib -lfontconfig -lfontconfig -L/opt/local/lib -lXpm -lX11 -L/opt/local/lib -lvpx -liconv -ljpeg -lpdf -L/opt/local/lib -llua -lm     -framework Foundation -framework AquaTerm -F/opt/local/Library/Frameworks -L/opt/local/lib -lz -lpangocairo-1.0 -lcairo -lpangoft2-1.0 -lpango-1.0 -lm -lgobject-2.0 -lfreetype -lfontconfig -lglib-2.0 -lintl 
:info:build ld: library not found for -lvpx
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[3]: *** [gnuplot] Error 1

I have attached the log file.

[pachecomarc@…]

Build log file

[larryv (Lawrence Velázquez)]

In the future, please Cc relevant port maintainers (port info --maintainers).

:info:build /usr/bin/clang++  -pipe -Os -arch x86_64  -L/opt/local/lib -Wl,-headerpad_max_install_names -arch x86_64 -L/opt/local/lib -L/opt/local/lib -Wl,-headerpad_max_install_names -L/opt/local/lib -L/opt/local/lib -o gnuplot alloc.o axis.o binary.o breaders.o color.o command.o contour.o datafile.o dynarray.o eval.o fit.o gadgets.o getcolor.o graph3d.o graphics.o help.o hidden3d.o history.o internal.o interpol.o matrix.o misc.o mouse.o parse.o plot.o plot2d.o plot3d.o pm3d.o readline.o save.o scanner.o set.o show.o specfun.o standard.o stats.o stdfn.o tables.o tabulate.o term.o time.o unset.o util.o util3d.o variable.o version.o  gp_cairo.o gp_cairo_helpers.o    -lreadline  -lncurses  -lz -lgd -lgd -ljpeg -lz -L/opt/local/lib -lpng15 -L/opt/local/lib -lfreetype -L/opt/local/lib -lfontconfig -lfontconfig -L/opt/local/lib -lXpm -lX11 -L/opt/local/lib -lvpx -liconv -ljpeg -lpdf -L/opt/local/lib -llua -lm     -framework Foundation -framework AquaTerm -F/opt/local/Library/Frameworks -L/opt/local/lib -lz -lpangocairo-1.0 -lcairo -lpangoft2-1.0 -lpango-1.0 -lm -lgobject-2.0 -lfreetype -lfontconfig -lglib-2.0 -lintl 
:info:build ld: library not found for -lvpx
:info:build clang: error: linker command failed with exit code 1 (use -v to see invocation)
:info:build make[3]: *** [gnuplot] Error 1

[mojca (Mojca Miklavec)]

What do

gdlib-config --libs

and

port contents libvpx | grep lib

return on your computer? I didn't update gd2 yet, but here it returns

-lgd -ljpeg -lz -L/opt/local/lib -lpng15 -L/opt/local/lib -lfreetype -L/opt/local/lib -lfontconfig -lfontconfig -L/opt/local/lib -lXpm -lX11 -L/opt/local/lib -lvpx -L/opt/local/lib -ltiff -liconv

and

  /opt/local/lib/libvpx.a
  /opt/local/lib/pkgconfig/vpx.pc

which is apparently sufficient for the linking to be successful.

I believe this is an issue with gd2 or libvpx, not with gnuplot. Gnuplot just uses whatever gdlib-config --libs returns.