[MacPorts] #49764: babl @0.1.14 falls back to clang-3.4 which is not functional on PPC platforms

[MacPorts]

#49764: babl @0.1.14 falls back to clang-3.4 which is not functional on PPC
platforms
--------------------------+----------------------
  Reporter:  braumann@…   |      Owner:  dbevans
      Type:  enhancement  |     Status:  assigned
  Priority:  Normal       |  Milestone:
 Component:  ports        |    Version:
Resolution:               |   Keywords:  powerpc
      Port:  clang34      |
--------------------------+----------------------

Comment (by ken-cunningham-webuse):

 going to help take a stab at this. First the basics. On Leopard PPC,
 standard /opt/local install, no funny configurations, macports defaults.

 have installed
 {{{
 $ port -v installed | grep clang
   clang-3.4 @3.4.2_11+analyzer (active) platform='darwin 9' archs='ppc'
   clang_select @2_0 (active) platform='darwin 9' archs='noarch'

 port -v installed | grep llvm
   cctools @886_6+llvm33 (active) platform='darwin 9' archs='ppc'
   ld64-127 @127.2_7+llvm33 (active) platform='darwin 9' archs='ppc'
   llvm-3.3 @3.3_10 (active) platform='darwin 9' archs='ppc'
   llvm-3.4 @3.4.2_11 (active) platform='darwin 9' archs='ppc'
   llvm_select @2_0 (active) platform='darwin 9' archs='noarch'

 $ port select --list gcc
 Available versions for gcc:
         gcc40
         gcc42 (active)
         llvm-gcc42
         none

 $ls -la /opt/local/bin/gcc
 lrwxr-xr-x  1 root  admin  16 Oct 22 18:33 /opt/local/bin/gcc ->
 /usr/bin/gcc-4.2

 }}}

 simple hello.c test

 {{{
 $ cat hello.c
 #include <stdio.h>

 int main() {
     printf("Hello!\n");
     return 0;
 }
 }}}
 puts out

 {{{

 $ clang -v -arch ppc hello.c -o hello.ppc
 clang version 3.4.2 (tags/RELEASE_34/dot2-final)
 Target: powerpc-apple-darwin9.8.0
 Thread model: posix
 Selected GCC installation:
  "/opt/local/libexec/llvm-3.4/bin/clang" -cc1 -triple powerpc-apple-
 darwin9.8.0 -S -disable-free -disable-llvm-verifier -main-file-name
 hello.c -mrelocation-model static -mdisable-fp-elim -fmath-errno -target-
 linker-version 127.2 -v -resource-dir
 /opt/local/libexec/llvm-3.4/bin/../lib/clang/3.4.2 -fno-dwarf2-cfi-asm
 -fno-dwarf-directory-asm -fno-autolink -fdebug-compilation-dir
 /users/shared/libunwind_test -ferror-limit 19 -fmessage-length 123
 -mstackrealign -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-
 diagnostics -vectorize-slp -o /var/tmp/hello-15e6ee.s -x c hello.c
 clang -cc1 version 3.4.2 based upon LLVM 3.4.2 default target powerpc-
 apple-darwin9.8.0
 ignoring nonexistent directory "/usr/local/include"
 #include "..." search starts here:
 #include <...> search starts here:
  /opt/local/libexec/llvm-3.4/bin/../lib/clang/3.4.2/include
  /usr/include
  /System/Library/Frameworks (framework directory)
  /Library/Frameworks (framework directory)
 End of search list.
  "/opt/local/bin/gcc" -v -c -arch ppc -m32 -o /var/tmp/hello-155d32.o -x
 assembler /var/tmp/hello-15e6ee.s
 Using built-in specs.
 Target: powerpc-apple-darwin9
 Configured with: /var/tmp/gcc_42/gcc_42-5577~1/src/configure --disable-
 checking --prefix=/usr --mandir=/usr/share/man --enable-
 languages=c,objc,c++,obj-c++ --program-transform-
 name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-
 darwin9 --with-gxx-include-dir=/usr/include/c++/4.0.0 --program-prefix=
 --host=powerpc-apple-darwin9 --target=powerpc-apple-darwin9
 Thread model: posix
 gcc version 4.2.1 (Apple Inc. build 5577)
  /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/as -arch ppc -o /var/tmp
 /hello-155d32.o /var/tmp/hello-15e6ee.s
  "/opt/local/bin/gcc" -v -arch ppc -m32 -o hello.ppc /var/tmp/hello-
 155d32.o
 Using built-in specs.
 Target: powerpc-apple-darwin9
 Configured with: /var/tmp/gcc_42/gcc_42-5577~1/src/configure --disable-
 checking --prefix=/usr --mandir=/usr/share/man --enable-
 languages=c,objc,c++,obj-c++ --program-transform-
 name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-
 darwin9 --with-gxx-include-dir=/usr/include/c++/4.0.0 --program-prefix=
 --host=powerpc-apple-darwin9 --target=powerpc-apple-darwin9
 Thread model: posix
 gcc version 4.2.1 (Apple Inc. build 5577)
  /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/collect2 -dynamic -arch ppc
 -macosx_version_min 10.5.8 -weak_reference_mismatches non-weak -o
 hello.ppc -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin9/4.2.1
 -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1 -L/usr/lib/gcc/powerpc-apple-
 darwin9/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1/../../../powerpc-
 apple-darwin9/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1/../../..
 /var/tmp/hello-155d32.o -lgcc_s.10.5 -lgcc -lSystemStubs -lSystem
 }}}

 and works

 {{{
 $ ./hello.ppc
 Hello!
 }}}

 So we have a working clang-3.4 that can compile c code. If I understand
 correctly what is going on here, clang is compiling c code to an assembly
 language file
 {{{
  "/opt/local/libexec/llvm-3.4/bin/clang" -cc1 -triple powerpc-apple-
 darwin9.8.0 -S -disable-free -disable-llvm-verifier -main-file-name
 hello.c -mrelocation-model static -mdisable-fp-elim -fmath-errno -target-
 linker-version 127.2 -v -resource-dir
 /opt/local/libexec/llvm-3.4/bin/../lib/clang/3.4.2 -fno-dwarf2-cfi-asm
 -fno-dwarf-directory-asm -fno-autolink -fdebug-compilation-dir
 /users/shared/libunwind_test -ferror-limit 19 -fmessage-length 123
 -mstackrealign -fobjc-runtime=gcc -fdiagnostics-show-option -fcolor-
 diagnostics -vectorize-slp -o /var/tmp/hello-15e6ee.s -x c hello.c
 }}}
 and then gcc-4.2 is taking it from there, and using gcc's assembler
 {{{
 /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/as -arch ppc -o /var/tmp
 /hello-155d32.o /var/tmp/hello-15e6ee.s
 }}}
 and then gcc's linker
 {{{
 /usr/libexec/gcc/powerpc-apple-darwin9/4.2.1/collect2 -dynamic -arch ppc
 -macosx_version_min 10.5.8 -weak_reference_mismatches non-weak -o
 hello.ppc -lcrt1.10.5.o -L/usr/lib/powerpc-apple-darwin9/4.2.1
 -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1 -L/usr/lib/gcc/powerpc-apple-
 darwin9/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1/../../../powerpc-
 apple-darwin9/4.2.1 -L/usr/lib/gcc/powerpc-apple-darwin9/4.2.1/../../..
 /var/tmp/hello-155d32.o -lgcc_s.10.5 -lgcc -lSystemStubs -lSystem
 }}}

 to give us a working binary

--
Ticket URL: <https://trac.macports.org/ticket/49764#comment:24>
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