[MacPorts] #51844: qt4-mac link error lc++ not found

[MacPorts]

#51844: qt4-mac link error lc++ not found
------------------------------------+--------------------------------
 Reporter:  kenneth.f.cunningham@…  |      Owner:  macports-tickets@…
     Type:  defect                  |     Status:  new
 Priority:  Normal                  |  Milestone:
Component:  ports                   |    Version:  2.3.4
 Keywords:                          |       Port:  qt4-mac
------------------------------------+--------------------------------
 MacOSX 10.6.8, is setup using
 <https://trac.macports.org/wiki/LibcxxOnOlderSystems>.

 Installing qt4-mac fails with error -lc++ not found. Log attached.

 Trying link manually, with verbose setting:

 {{{

 $ pwd
 /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt4-mac/qt4-mac/work
 /qt-everywhere-opensource-src-4.8.7/src/tools/moc
 $ /opt/local/bin/clang++-mp-3.7 -v -L/opt/local/lib
 -Wl,-headerpad_max_install_names -stdlib=libc++ -arch x86_64
 -Wl,-syslibroot,/Xcode3/SDKs/MacOSX10.6.sdk -Xarch_x86_64 -mmacosx-
 version-min=10.6 -Xarch_x86_64 -mmacosx-version-min=10.6 -o
 ../../../bin/moc release-shared/moc.o release-shared/preprocessor.o
 release-shared/generator.o release-shared/parser.o release-shared/token.o
 release-shared/main.o
 -L/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt4-mac/qt4-mac/work
 /qt-everywhere-opensource-src-4.8.7/src/tools/bootstrap -lbootstrap
 -framework CoreServices -framework ApplicationServices -lz -lz
 clang version 3.7.1 (tags/RELEASE_371/final)
 Target: x86_64-apple-darwin10.8.0
 Thread model: posix
  "/opt/local/libexec/llvm-3.7/bin/ld" -demangle -dynamic -arch x86_64
 -macosx_version_min 10.6.0 -o ../../../bin/moc -lcrt1.10.6.o
 -L/opt/local/lib
 -L/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_aqua_qt4-mac/qt4-mac/work
 /qt-everywhere-opensource-src-4.8.7/src/tools/bootstrap
 -headerpad_max_install_names -syslibroot /Xcode3/SDKs/MacOSX10.6.sdk
 release-shared/moc.o release-shared/preprocessor.o release-
 shared/generator.o release-shared/parser.o release-shared/token.o release-
 shared/main.o -lbootstrap -framework CoreServices -framework
 ApplicationServices -lz -lz -lc++ -lSystem
 /opt/local/libexec/llvm-3.7/bin/../lib/clang/3.7.1/lib/darwin/libclang_rt.osx.a
 ld: library not found for -lc++
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)

 }}}

 libc++ is present in /usr/local, and other ports seem to install OK.

 {{{
 $ pwd
 /usr/lib
 $ ls -la libc*
 -rwxr-xr-x  1 root  admin  1186580 12 Jan  2016 libc++.1.dylib
 lrwxr-xr-x  1 root  admin       14 12 Jan  2016 libc++.dylib ->
 libc++.1.dylib
 -rwxr-xr-x  1 root  admin   431040 24 Nov  2015 libc++abi.dylib
 lrwxr-xr-x  1 root  wheel       15 25 Feb  2015 libc.dylib ->
 libSystem.dylib
 }}}

 might be related to this ticket <https://trac.macports.org/ticket/50481>
 but seems different, as "-stdlib=libc++" seems to be present in the
 command line above.

 My macports.conf relevant part:
 {{{

 # $Id: macports.conf.in 117120 2014-02-17 00:55:33Z jmr at macports.org $

 cxx_stdlib         libc++
 buildfromsource    always
 delete_la_files    yes
 default_compilers  macports-clang-3.7 macports-clang-3.4 macports-
 clang-3.3 gcc-4.2 apple-gcc-4.2 gcc-4.0
 build_arch         x86_64
 }}}

 Thanks.

-- 
Ticket URL: <https://trac.macports.org/ticket/51844>
MacPorts <https://www.macports.org/>
Ports system for OS X