brew doctor

$ brew doctor
Unbrewed static libraries were found in /usr/local/lib.

If you didn't put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
    /usr/local/lib/libc-client.a

brew install

==> Downloading http://www.hpl.hp.com/personal/Hans_Boehm/gc/gc_source/gc-7.2alpha6.tar.gz
File already downloaded in /Users/alex/Library/Caches/Homebrew
/usr/bin/tar xf /Users/alex/Library/Caches/Homebrew/bdw-gc-7.2alpha6.tar.gz
==> Patching
/usr/bin/patch -f -p1 -i 001-homebrew.diff
patching file libatomic_ops/src/atomic_ops/sysdeps/gcc/x86.h
patching file libatomic_ops/src/atomic_ops/sysdeps/gcc/x86_64.h
patching file Makefile.in
==> ./configure --disable-debug --disable-dependency-tracking --prefix=/usr/local/Cellar/bdw-gc/7.2alpha6 --enable-cplusplus
./configure --disable-debug --disable-dependency-tracking --prefix=/usr/local/Cellar/bdw-gc/7.2alpha6 --enable-cplusplus
checking build system type... x86_64-apple-darwin11.3.0
checking host system type... x86_64-apple-darwin11.3.0
checking target system type... x86_64-apple-darwin11.3.0
checking GC version numbers... major=7 minor=2 alpha=6
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking whether to enable maintainer-specific portions of Makefiles... no
checking for style of include used by make... GNU
checking for gcc... /usr/bin/clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /usr/bin/clang accepts -g... yes
checking for /usr/bin/clang option to accept ISO C89... none needed
checking dependency style of /usr/bin/clang... none
checking whether /usr/bin/clang and cc understand -c and -o together... yes
checking whether we are using the GNU C++ compiler... yes
checking whether /usr/bin/clang++ accepts -g... yes
checking dependency style of /usr/bin/clang++... none
checking dependency style of /usr/bin/clang... none
checking for ar... ar
checking for ranlib... ranlib
checking for thread model used by GCC... posix
checking for inline... inline
checking for pthread_self in -lpthread... yes
configure: WARNING: "Explicit GC_INIT() calls may be required."
checking for xlc... no
checking whether to build shared libraries... yes
checking which machine-dependent code should be used... 
checking how to print strings... printf
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by /usr/bin/clang... /usr/bin/clang
checking if the linker (/usr/bin/clang) is GNU ld... no
checking for BSD- or MS-compatible name lister (nm)... /usr/bin/nm
checking the name lister (/usr/bin/nm) interface... BSD nm
checking whether ln -s works... yes
checking the maximum length of command line arguments... 196608
checking whether the shell understands some XSI constructs... yes
checking whether the shell understands "+="... yes
checking how to convert x86_64-apple-darwin11.3.0 file names to x86_64-apple-darwin11.3.0 format... func_convert_file_noop
checking how to convert x86_64-apple-darwin11.3.0 file names to toolchain format... func_convert_file_noop
checking for /usr/bin/clang option to reload object files... -r
checking for objdump... no
checking how to recognize dependent libraries... pass_all
checking for dlltool... no
checking how to associate runtime and link libraries... printf %s\n
checking for archiver @FILE support... no
checking for strip... strip
checking for ranlib... (cached) ranlib
checking command to parse /usr/bin/nm output from /usr/bin/clang object... ok
checking for sysroot... no
checking for mt... no
checking if : is a manifest tool... no
checking for dsymutil... dsymutil
checking for nmedit... nmedit
checking for lipo... lipo
checking for otool... otool
checking for otool64... no
checking for -single_module linker flag... yes
checking for -exported_symbols_list linker flag... yes
checking for -force_load linker flag... yes
checking how to run the C preprocessor... /usr/bin/clang -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for dlfcn.h... yes
checking for objdir... .libs
checking if /usr/bin/clang supports -fno-rtti -fno-exceptions... yes
checking for /usr/bin/clang option to produce PIC... -fno-common -DPIC
checking if /usr/bin/clang PIC flag -fno-common -DPIC works... yes
checking if /usr/bin/clang static flag -static works... no
checking if /usr/bin/clang supports -c -o file.o... yes
checking if /usr/bin/clang supports -c -o file.o... (cached) yes
checking whether the /usr/bin/clang linker (/usr/bin/clang) supports shared libraries... yes
checking dynamic linker characteristics... darwin11.3.0 dyld
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking how to run the C++ preprocessor... /usr/bin/clang++ -E
checking for ld used by /usr/bin/clang++... /usr/bin/clang
checking if the linker (/usr/bin/clang) is GNU ld... no
checking whether the /usr/bin/clang++ linker (/usr/bin/clang) supports shared libraries... yes
checking for /usr/bin/clang++ option to produce PIC... -fno-common -DPIC
checking if /usr/bin/clang++ PIC flag -fno-common -DPIC works... yes
checking if /usr/bin/clang++ static flag -static works... no
checking if /usr/bin/clang++ supports -c -o file.o... yes
checking if /usr/bin/clang++ supports -c -o file.o... (cached) yes
checking whether the /usr/bin/clang++ linker (/usr/bin/clang) supports shared libraries... yes
checking dynamic linker characteristics... darwin11.3.0 dyld
checking how to hardcode library paths into programs... immediate
checking sys/dg_sys_info.h usability... no
checking sys/dg_sys_info.h presence... no
checking for sys/dg_sys_info.h... no
checking whether Solaris gcc optimization fix is necessary... no
checking atomic_ops.h usability... no
checking atomic_ops.h presence... no
checking for atomic_ops.h... no
checking which libatomic_ops to use... bundled
configure: creating ./config.status
config.status: creating Makefile
config.status: creating bdw-gc.pc
config.status: creating include/private/config.h
config.status: executing depfiles commands
config.status: executing libtool commands
config.status: executing default commands
=== configuring in libatomic_ops (/private/tmp/homebrew-bdw-gc-7.2alpha6-jJPw/gc-7.2alpha6/libatomic_ops)
configure: running /bin/sh ./configure --disable-option-checking '--prefix=/usr/local/Cellar/bdw-gc/7.2alpha6'  '--disable-debug' '--disable-dependency-tracking' '--enable-cplusplus' 'CC=/usr/bin/clang' 'CFLAGS=-Os -w -pipe -march=native -Qunused-arguments' 'CXX=/usr/bin/clang++' 'CXXFLAGS=-Os -w -pipe -march=native -Qunused-arguments' --cache-file=/dev/null --srcdir=.
checking build system type... x86_64-apple-darwin11.3.0
checking host system type... x86_64-apple-darwin11.3.0
checking target system type... x86_64-apple-darwin11.3.0
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... ./install-sh -c -d
checking for gawk... no
checking for mawk... no
checking for nawk... no
checking for awk... awk
checking whether make sets $(MAKE)... yes
checking for ranlib... ranlib
checking for style of include used by make... GNU
checking for gcc... /usr/bin/clang
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables... 
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /usr/bin/clang accepts -g... yes
checking for /usr/bin/clang option to accept ISO C89... none needed
checking dependency style of /usr/bin/clang... none
checking whether /usr/bin/clang and cc understand -c and -o together... yes
checking dependency style of /usr/bin/clang... none
checking how to run the C preprocessor... /usr/bin/clang -E
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking for stdlib.h... (cached) yes
checking for unistd.h... (cached) yes
checking for sys/param.h... yes
checking for getpagesize... yes
checking for working mmap... yes
checking for ANSI C header files... (cached) yes
checking Determining PIC compiler flag... -fPIC
checking for pthread_self in -lpthread... yes
configure: creating ./config.status
config.status: creating Makefile
config.status: creating src/Makefile
config.status: creating src/atomic_ops/Makefile
config.status: creating src/atomic_ops/sysdeps/Makefile
config.status: creating doc/Makefile
config.status: creating tests/Makefile
config.status: creating src/config.h
config.status: executing depfiles commands
config.status: executing default commands
==> make
make 
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o allchblk.lo allchblk.c
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o alloc.lo alloc.c
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o blacklst.lo blacklst.c
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o checksums.lo checksums.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c blacklst.c  -fno-common -DPIC -o .libs/blacklst.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c alloc.c  -fno-common -DPIC -o .libs/alloc.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c allchblk.c  -fno-common -DPIC -o .libs/allchblk.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c checksums.c  -fno-common -DPIC -o .libs/checksums.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c checksums.c -o checksums.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c blacklst.c -o blacklst.o >/dev/null 2>&1
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o dbg_mlc.lo dbg_mlc.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c allchblk.c -o allchblk.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c dbg_mlc.c  -fno-common -DPIC -o .libs/dbg_mlc.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c alloc.c -o alloc.o >/dev/null 2>&1
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o dyn_load.lo dyn_load.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c dyn_load.c  -fno-common -DPIC -o .libs/dyn_load.o
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o finalize.lo finalize.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c dbg_mlc.c -o dbg_mlc.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c dyn_load.c -o dyn_load.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c finalize.c  -fno-common -DPIC -o .libs/finalize.o
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o gc_dlopen.lo gc_dlopen.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c gc_dlopen.c  -fno-common -DPIC -o .libs/gc_dlopen.o
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o gcj_mlc.lo gcj_mlc.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c gc_dlopen.c -o gc_dlopen.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c gcj_mlc.c  -fno-common -DPIC -o .libs/gcj_mlc.o
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o headers.lo headers.c
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o malloc.lo malloc.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c headers.c  -fno-common -DPIC -o .libs/headers.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c finalize.c -o finalize.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c gcj_mlc.c -o gcj_mlc.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c malloc.c  -fno-common -DPIC -o .libs/malloc.o
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o mallocx.lo mallocx.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c headers.c -o headers.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c malloc.c -o malloc.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c mallocx.c  -fno-common -DPIC -o .libs/mallocx.o
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o mark.lo mark.c
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o mark_rts.lo mark_rts.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c mallocx.c -o mallocx.o >/dev/null 2>&1
/bin/sh ./libtool --tag=CC   --mode=compile /usr/bin/clang -DHAVE_CONFIG_H   -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src  -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c -o misc.lo misc.c
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c mark.c  -fno-common -DPIC -o .libs/mark.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c mark_rts.c  -fno-common -DPIC -o .libs/mark_rts.o
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c misc.c  -fno-common -DPIC -o .libs/misc.o
misc.c:943:7: error: array size is negative
      GC_STATIC_ASSERT((ptr_t)(word)(-1) > (ptr_t)0);
      ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
./include/private/gc_priv.h:2143:51: note: expanded from macro 'GC_STATIC_ASSERT'
# define GC_STATIC_ASSERT(expr) (void)sizeof(char[(expr)? 1 : -1])
                                                  ^~~~~~~~~~~~~~
1 error generated.
make[1]: *** [misc.lo] Error 1
make[1]: *** Waiting for unfinished jobs....
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c mark_rts.c -o mark_rts.o >/dev/null 2>&1
libtool: compile:  /usr/bin/clang -DHAVE_CONFIG_H -I./include -I./include -I./libatomic_ops/src -I./libatomic_ops/src -fexceptions -Os -w -pipe -march=native -Qunused-arguments -c mark.c -o mark.o >/dev/null 2>&1
make: *** [all-recursive] Error 1
==> Exit Status: 2
http://github.com/mxcl/homebrew/blob/master/Library/Formula/bdw-gc.rb#L22
==> Environment
HOMEBREW_VERSION: 0.8.1
HEAD: 4ee175e1912b58a4de814653e2d1a7cc1930fcda
HOMEBREW_PREFIX: /usr/local
HOMEBREW_CELLAR: /usr/local/Cellar
Hardware: quad-core 64-bit sandybridge
OS X: 10.7.3
Kernel Architecture: x86_64
Xcode: 4.2
GCC-4.0: N/A
GCC-4.2: N/A
LLVM: build 2336
Clang: 3.1 build 318
MacPorts or Fink? false
X11 installed? true
System Ruby: 1.8.7-249
/usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
Which Perl:   /Users/alex/perl5/perlbrew/perls/perl-5.14.2/bin/perl
Which Python: /usr/bin/python
Which Ruby:   /usr/bin/ruby => /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby
==> Build Flags
CC: /usr/bin/clang
CXX: /usr/bin/clang++ => /usr/bin/clang
LD: /usr/bin/clang
CFLAGS: -Os -w -pipe -march=native -Qunused-arguments
CXXFLAGS: -Os -w -pipe -march=native -Qunused-arguments
MAKEFLAGS: -j4

Error: Failed executing: make 
If `brew doctor' does not help diagnose the issue, please report the bug:
    https://github.com/mxcl/homebrew/wiki/checklist-before-filing-a-new-issue