[MacPorts] #42112: clang-3.4 build failure with gcc-4.2 on OS X 10.6.8

[MacPorts]

#42112: clang-3.4 build failure with gcc-4.2 on OS X 10.6.8
--------------------------+-------------------------
  Reporter:  rjvbertin@…  |      Owner:  jeremyhu@…
      Type:  defect       |     Status:  closed
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:  2.2.1
Resolution:  worksforme   |   Keywords:  snowleopard
      Port:  clang-3.4    |
--------------------------+-------------------------

Comment (by rjvbertin@…):

 Update: I've never managed to get clang-3.4 to build with apple's gcc-4.2,
 not even after relaunching the build command multiple times in a row. As I
 had a working version, I let it slip, but I have to come back to that.

 The latest llvm-3.4_1 update caused clang-3.4 to crash during compilation.
 As llvm-3.4 had been upgraded with upgrade outdated, I figured I'd
 reinstall it, ensuring that I'd be building with gcc-4.7 .

 That worked, but now clang-3.4 will not rebuild, not even with macports-
 gcc-4.8 as it did before. The failure is the same as I observed with
 gcc-4.2. Moving into the build directory and invoking make by hand, I see

 ```
 # make V=1
 [...]

 make[4]: Nothing to be done for `all'.
 make[5]: Nothing to be done for `clang_darwin'.
  ARCHIVE:   clang_darwin_embedded/hard_static/armv7:
 /Volumes/Debian/MacPorts/var/macports/build/_Volumes_Debian_MacPorts_var_macports_sources_rsync.macports.org_release_ports_lang_llvm-3.4/clang-3.4/work/llvm-3.4/tools/clang/runtime
 /compiler-rt/clang_darwin_embedded/hard_static/armv7/libcompiler_rt.a
 make[5]: ***
 [/Volumes/Debian/MacPorts/var/macports/build/_Volumes_Debian_MacPorts_var_macports_sources_rsync.macports.org_release_ports_lang_llvm-3.4/clang-3.4/work/llvm-3.4/tools/clang/runtime
 /compiler-rt/clang_darwin_embedded/hard_static/armv7/libcompiler_rt.a]
 Error 1
 make[4]: *** [BuildRuntimeLibraries] Error 2
 make[3]: *** [compiler-rt/.makeall] Error 2
 make[2]: *** [all] Error 1
 make[1]: *** [clang/.makeall] Error 2
 make: *** [all] Error 1
 Exit 2
 ```


 Why is clang trying to build for armv7 - I never asked for that! Is there
 a way to deactivate support for that (and other cross-compiling) as I
 won't ever be using such features?

 Let me know if I should open a new ticket for this.

-- 
Ticket URL: <https://trac.macports.org/ticket/42112#comment:12>
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