emacs failed to build on 10.9 (Mavericks)

gistfile1.txt

# https://github.com/mxcl/homebrew/issues/23741
mkdir: sys: File exists
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libgnu.a(u64.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: file: libgnu.a(u64.o) has no symbols
xml.c:23:10: fatal error: 'libxml/tree.h' file not found
#include <libxml/tree.h>
         ^
1 error generated.
make[1]: *** [xml.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [src] Error 2
Error: emacs did not build