gistfile1.txt

$ make
gcc -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk -mmacosx-version-min=10.5 -headerpad_max_install_names -arch i386 -arch x86_64 -Wall -Wmissing-prototypes -Wpointer-arith -Wdeclaration-after-statement -Wendif-labels -Wmissing-format-attribute -Wformat-security -fno-strict-aliasing -fwrapv  -I. -I. -I/Library/PostgreSQL/9.2/include/postgresql/server -I/Library/PostgreSQL/9.2/include/postgresql/internal -I/usr/local/include/libxml2  -I/usr/local/include/libxml2 -I/usr/local/include  -c -o ip4r_module.o ip4r_module.c
clang: warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk'
clang: warning: no such sysroot directory: '/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.6.sdk'
clang: warning: argument unused during compilation: '-headerpad_max_install_names'
In file included from ip4r_module.c:3:
./ipr.h:3:10: fatal error: 'stdio.h' file not found
#include <stdio.h>
         ^
1 error generated.
make: *** [ip4r_module.o] Error 1