[2012-10-26 18:10:09] env CFLAGS=-I/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/include LDFLAGS=-L/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/lib ./configure --prefix=~/.rvm/usr
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a thread-safe mkdir -p... config/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 gcc... /usr/local/bin/gcc-4.2
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/local/bin/gcc-4.2 accepts -g... yes
checking for /usr/local/bin/gcc-4.2 option to accept ISO C89... none needed
checking for style of include used by make... GNU
checking dependency style of /usr/local/bin/gcc-4.2... gcc3
checking how to run the C preprocessor... /usr/local/Library/ENV/4.3/cpp
configure: error: in `~/.rvm/src/yaml-0.1.4':
configure: error: C preprocessor "/usr/local/Library/ENV/4.3/cpp" fails sanity check
See `config.log' for more details