[MacPorts] #48331: x265 fails to install due to CMAKE_CXX_COMPILER_ID being unset

[MacPorts]

#48331: x265 fails to install due to CMAKE_CXX_COMPILER_ID being unset
------------------------+-------------------------
 Reporter:  jeremyhu@…  |      Owner:  michaelld@…
     Type:  defect      |     Status:  new
 Priority:  Normal      |  Milestone:
Component:  ports       |    Version:  2.3.3
 Keywords:              |       Port:  cmake
------------------------+-------------------------
 {{{
 $ sudo port -v -s upgrade ffmpeg
 --->  Computing dependencies for x265.
 --->  Configuring x265
 -- cmake version 3.2.3
 -- Detected x86 target processor
 -- Could NOT find NUMA (missing:  NUMA_ROOT_DIR NUMA_INCLUDE_DIR
 NUMA_LIBRARY)
 CMake Error at CMakeLists.txt:101 (if):
   if given arguments:

     "STREQUAL" "Clang"

   Unknown arguments specified


 -- Configuring incomplete, errors occurred!
 See also
 "/opt/local/var/macports/build/_Users_jeremy_src_macports_trunk_dports_multimedia_x265/x265/work/build/CMakeFiles/CMakeOutput.log".
 See also
 "/opt/local/var/macports/build/_Users_jeremy_src_macports_trunk_dports_multimedia_x265/x265/work/build/CMakeFiles/CMakeError.log".
 Command failed:  cd
 "/opt/local/var/macports/build/_Users_jeremy_src_macports_trunk_dports_multimedia_x265/x265/work/build"
 && /opt/local/bin/cmake -DCMAKE_INSTALL_PREFIX=/opt/local
 -DCMAKE_OSX_ARCHITECTURES="x86_64;i386" -DCMAKE_VERBOSE_MAKEFILE=ON
 -DCMAKE_COLOR_MAKEFILE=ON -DCMAKE_BUILD_TYPE=Release
 -DCMAKE_BUILD_WITH_INSTALL_RPATH=ON -DCMAKE_INSTALL_RPATH=/opt/local/lib
 -DCMAKE_INSTALL_NAME_DIR=/opt/local/lib
 -DCMAKE_SYSTEM_PREFIX_PATH="/opt/local;/usr"
 -DCMAKE_MODULE_PATH=/opt/local/share/cmake/Modules
 -DCMAKE_FIND_FRAMEWORK=LAST -Wno-dev -DCMAKE_C_FLAGS_RELEASE="-DNDEBUG"
 -DCMAKE_CXX_FLAGS_RELEASE="-DNDEBUG" -DCMAKE_OSX_DEPLOYMENT_TARGET="10.5"
 -DCMAKE_OSX_SYSROOT="/"
 /opt/local/var/macports/build/_Users_jeremy_src_macports_trunk_dports_multimedia_x265/x265/work/x265_1.7/source
 Exit code: 1
 Error: Failed to configure x265: configure failure: command execution
 failed
 Error: See
 /opt/local/var/macports/logs/_Users_jeremy_src_macports_trunk_dports_multimedia_x265/x265/main.log
 for details.
 Error: Problem while installing x265
 Error: Follow http://guide.macports.org/#project.tickets to report a bug.
 }}}


 CMakeLists.txt is doing:

 {{{
 if(${CMAKE_CXX_COMPILER_ID} STREQUAL "Clang")
     set(CLANG 1)
 endif()
 }}}

 So it seems that cmake isn't setting CMAKE_CXX_COMPILER_ID for some
 reason.

 This was seen on Leopard using:
 {{{
 default_compilers  macports-clang-3.4 macports-clang-3.3 gcc-4.2 apple-
 gcc-4.2 gcc-4.0
 cxx_stdlib         libstdc++
 delete_la_files    yes
 }}}

 And it was also seen on Yosemite with Xcode 7.  I suspect cmake is perhaps
 failing to parse --version output for some reason.  Eg for the Leopard
 case:

 {{{
 $ /opt/local/bin/clang++-mp-3.4 --version
 clang version 3.4.2 (tags/RELEASE_34/dot2-final)
 Target: x86_64-apple-darwin9.8.0
 Thread model: posix
 }}}

-- 
Ticket URL: <https://trac.macports.org/ticket/48331>
MacPorts <https://www.macports.org/>
Ports system for OS X