Missing ali files when compiling on Mac OS

[Alex A <aan12003@gmail.com>]

What is causing this error? 
test.adb is a hello world program.



Output error: 

    gnatmake -d -P/Users/u0/Downloads/test.gpr
    Adding linker switches for"test.adb".
       Adding -g
    TMPDIR = "/private/var/folders/fn/srvkxbdj3bz60q952680ngj40000gn/T"
    Created configuration file "/private/var/folders/fn/srvkxbdj3bz60q952680ngj40000gn/T/GNAT-TEMP-000001.TMP"
      "test.ali" being checked ...
      -> "test.ali" missing.
    gcc -c -g -gnatf -g -gnat12 -I- -gnatA /Users/u0/Downloads/src/test.adb
    End of compilation
    gnatmake: "/Users/u0/Downloads/src/test.adb" compilation error
    
    [2015-02-09 19:39:13] process exited with status 4, elapsed time: 00.77s

---

gcc -v

    Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
    Apple LLVM version 6.0 (clang-600.0.56) (based on LLVM 3.5svn)
    Target: x86_64-apple-darwin14.1.0
    Thread model: posix

---
gnatmake --version

    GNATMAKE GPL 2014 (20140331)
    Copyright (C) 1995-2014, Free Software Foundation, Inc.


---
which gcc 
    /usr/bin/gcc
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