Compile opencore-amr for iOS，but always "configure: error: C++ compiler cannot create executables" -

Compile opencore-amr for iOS，but always "configure: error: C++ compiler cannot create executables" -

i got source code here

https://github.com/feuvan/opencore-amr-ios

but when run .sh file, "configure: error: c++ compiler cannot create executables"

----------------------------------- ....... checking bsd-compatible install... /opt/local/bin/ginstall -c checking whether build environment sane... yes checking thread-safe mkdir -p... /opt/local/bin/gmkdir -p checking gawk... no checking mawk... no checking nawk... no checking awk... awk checking whether create sets $(make)... yes checking how create ustar tar archive... gnutar checking whether create supports nested variables... yes checking whether enable maintainer-specific portions of makefiles... no checking build scheme type... x86_64-apple-darwin13.4.0 checking host scheme type... x86_64-apple-darwin13.4.0 checking whether c++ compiler works... no configure: error: in `/users/jun/downloads/opencore-amr-ios-master': configure: error: c++ compiler cannot create executables see `config.log' more details -----------------------------------

osx 10.9.4, xcode 6.1 , command line tools

who can help ?

c++ ios configure