[MacPorts] #59717: clang >= 3.4: Unable to build/bootstrap on Intel Tiger

[MacPorts]

#59717: clang >= 3.4: Unable to build/bootstrap on Intel Tiger
-------------------------------------------------+-------------------------
  Reporter:  dgelessus                           |      Owner:  (none)
      Type:  defect                              |     Status:  new
  Priority:  Normal                              |  Milestone:
 Component:  ports                               |    Version:
Resolution:                                      |   Keywords:  tiger i386
      Port:  libcxx llvm-3.4 clang-3.4 llvm-3.7  |
  clang-3.7                                      |
-------------------------------------------------+-------------------------

Comment (by dgelessus):

 > The MacPorts-specific part adds acceptance for the macports-libstdc++
 flag, and changes some header lookup dirs, but does not actually function
 without the llvm support, of course, even if it accepts the flag.

 Ah, I already expected something like that. At least the patch works well
 enough on the older versions that the accidental clang-3.4 -stdlib
 =macports-libstdc++ call runs without errors.

 For reference, #59584 is the MacPorts base ticket for this issue.

 I let my clang-3.7 build run overnight (llvm-3.7 already built
 successfully). Most of the build ran without problems, but now I'm getting
 this error in the compiler-rt build:

 {{{
 llvm[3]: Copying runtime library darwin/eprintf to build dir
 cp /opt/local/var/macports/build/_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/tools/clang/runtime/compiler-
 rt/clang_darwin/eprintf/libcompiler_rt.a /opt/local/var/macports/build
 /_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/Release+Debug/lib/clang/3.7.1/lib/darwin/libclang_rt.eprintf.a
 llvm[3]: Copying runtime library darwin/10.4 to build dir
 cp /opt/local/var/macports/build/_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/tools/clang/runtime/compiler-
 rt/clang_darwin/10.4/libcompiler_rt.a /opt/local/var/macports/build
 /_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/Release+Debug/lib/clang/3.7.1/lib/darwin/libclang_rt.10.4.a
 cp: /opt/local/var/macports/build/_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/tools/clang/runtime/compiler-
 rt/clang_darwin/eprintf/libcompiler_rt.a: No such file or directory
 gmake[3]: *** [Makefile:241: /opt/local/var/macports/build
 /_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/Release+Debug/lib/clang/3.7.1/lib/darwin/libclang_rt.eprintf.a]
 Error 1
 gmake[3]: *** Waiting for unfinished jobs....
 cp: /opt/local/var/macports/build/_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/tools/clang/runtime/compiler-
 rt/clang_darwin/10.4/libcompiler_rt.a: No such file or directory
 gmake[3]: *** [Makefile:241: /opt/local/var/macports/build
 /_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/Release+Debug/lib/clang/3.7.1/lib/darwin/libclang_rt.10.4.a]
 Error 1
 rm /opt/local/var/macports/build/_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/Release+Debug/lib/clang/3.7.1/lib/darwin/.dir
 /opt/local/var/macports/build/_Users_Shared_macports-
 ports_lang_llvm-3.7/clang-3.7/work/build/Release+Debug/lib/clang/3.7.1/lib/macho_embedded/.dir
 }}}

 This issue (or a very similar one) has been reported before as #54836, but
 it doesn't look like it was ever fixed. #59157 is a similar issue, but
 with a different cause (command-line tools vs. full Xcode installation,
 which is not an issue on Tiger). That ticket may be useful as it has a
 detailed analysis of what causes the issue, which might help with finding
 the root cause on Tiger.

-- 
Ticket URL: <https://trac.macports.org/ticket/59717#comment:8>
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