[MacPorts] #53184: A cxx11-compatible clang compiler on 10.5 PPC ?Some progress...

[MacPorts]

#53184: A cxx11-compatible clang compiler on 10.5 PPC ?Some progress...
---------------------+-----------------------------
  Reporter:  kencu   |      Owner:
      Type:  defect  |     Status:  new
  Priority:  Normal  |  Milestone:
 Component:  ports   |    Version:
Resolution:          |   Keywords:  leopard powerpc
      Port:          |
---------------------+-----------------------------

Comment (by kencu):

 building clang-3.8 with gcc6 also works, with one small error in the lipo
 script:
 {{{
 projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.10.4.dir/build
 make[2]: Entering directory
 `/opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build'
 [ 14%] Generating
 ../../../../lib/clang/3.8.1/lib/darwin/libclang_rt.10.4.a
 cd
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/projects
 /compiler-rt/lib/builtins && /opt/local/bin/cmake -E make_directory
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/./lib/clang/3.8.1/lib/darwin
 cd
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/projects
 /compiler-rt/lib/builtins && lipo -output
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/./lib/clang/3.8.1/lib/darwin/libclang_rt.10.4.a
 -create -arch i386
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/lib/libclang_rt.builtins_i386_10.4.a
 -arch x86_64
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/lib/libclang_rt.builtins_x86_64_10.4.a
 fatal error: lipo: specifed architecture type (i386) for file
 (/opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/lib/libclang_rt.builtins_i386_10.4.a)
 does not match its cputype (18) and cpusubtype (0) (should be cputype (7)
 and cpusubtype (3))
 make[2]: *** [lib/clang/3.8.1/lib/darwin/libclang_rt.10.4.a] Error 1
 make[2]: Leaving directory
 `/opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build'
 make[1]: *** [projects/compiler-
 rt/lib/builtins/CMakeFiles/clang_rt.10.4.dir/all] Error 2
 make[1]: *** Waiting for unfinished jobs....
 [ 14%] Building CXX object tools/clang/utils/TableGen/CMakeFiles/obj
 .clang-tblgen.dir/ClangCommentCommandInfoEmitter.cpp.o
 }}}
 This probably is due to an assumption in the script that the build is on
 Intel, because this file is actually ppc code
 `libclang_rt.builtins_i386_10.4.a` and this is worked around quite easily
 by going into this folder:
 {{{
 cd
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/projects
 /compiler-rt/lib/builtins
 }}}
 And executing this slightly altered line:

 {{{
 sudo lipo -output
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/./lib/clang/3.8.1/lib/darwin/libclang_rt.10.4.a
 -create -arch ppc
 /opt/local/var/macports/build/_opt_peggedports_lang_llvm-3.8/clang-3.8/work/build/lib/libclang_rt.builtins_i386_10.4.a
 }}}

 That then gives you a completed installation of clang-3.8. llvm-3.8 also
 builds nicely through to completion using gcc6, so in the end we have
 success:
 {{{
 $ clang --version
 clang version 3.8.1 (tags/RELEASE_381/final)
 Target: powerpc-apple-darwin9.8.0
 Thread model: posix
 InstalledDir: /opt/local/libexec/llvm-3.8/bin
 }}}


 We then have two clang compilers, 3.7 and 3.8, that work without
 segfaulting on 10.5 PPC. This was successful at building a fairly complex
 cxx11 port, aria2:
 {{{
 $ port -v installed aria2
 The following ports are currently installed:
   aria2 @1.31.0_0 (active) platform='darwin 9' archs='ppc'
 date='2017-05-14T18:21:11-0700'
 }}}
 which has proper linking against libc++:
 {{{
 $ otool -L /opt/local/bin/aria2c
 /opt/local/bin/aria2c:
 /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
 (compatibility version 150.0.0, current version 476.19.0)
         /opt/local/lib/libz.1.dylib (compatibility version 1.0.0, current
 version 1.2.11)
         /opt/local/lib/libxml2.2.dylib (compatibility version 12.0.0,
 current version 12.4.0)
         /opt/local/lib/libgnutls.30.dylib (compatibility version 45.0.0,
 current version 45.2.0)
         /opt/local/lib/libnettle.6.dylib (compatibility version 6.0.0,
 current version 6.1.0)
         /opt/local/lib/libgmp.10.dylib (compatibility version 14.0.0,
 current version 14.2.0)
         /opt/local/lib/libintl.8.dylib (compatibility version 10.0.0,
 current version 10.5.0)
         /System/Library/Frameworks/Security.framework/Versions/A/Security
 (compatibility version 1.0.0, current version 26935.0.0)
         /usr/lib/libc++.1.dylib (compatibility version 1.0.0, current
 version 3.9.0)
         /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current
 version 111.1.7)
         /usr/lib/libgcc_s.1.dylib (compatibility version 1.0.0, current
 version 697.0.0)
         /usr/lib/libc++abi.dylib (compatibility version 1.0.0, current
 version 3.9.0)
 }}}
 which runs, finds it's libraries, and appears to work normally so far,
 with limited testing:

 {{{
 $ aria2c
 Specify at least one URL.
 Usage: aria2c [OPTIONS] [URI | MAGNET | TORRENT_FILE | METALINK_FILE]...
 See 'aria2c -h'.
 }}}

--
Ticket URL: <https://trac.macports.org/ticket/53184#comment:5>
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