Oh man, it’s so much worse than that:
/Users/spiffyzha$ locate libstdc++
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/lib/libstdc++.6.0.9.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/lib/libstdc++.6.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.8.sdk/usr/lib/libstdc++.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/lib/libstdc++.6.0.9.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/lib/libstdc++.6.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/lib/libstdc++.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk/usr/lib/libstdc++.6.0.9.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk/usr/lib/libstdc++.6.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS7.1.sdk/usr/lib/libstdc++.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk/usr/lib/libstdc++.6.0.9.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk/usr/lib/libstdc++.6.dylib
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk/usr/lib/libstdc++.dylib
/opt/local/lib/gcc45/i386/libstdc++.6.dylib
/opt/local/lib/gcc45/libstdc++.6.dylib
/opt/local/lib/gcc45/libstdc++.dylib
/opt/local/lib/gcc48/i386/libstdc++.6.dylib
/opt/local/lib/gcc48/libstdc++.6.dylib
/opt/local/lib/gcc48/libstdc++.dylib
/opt/local/lib/libstdc++.6.dylib
/opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports/cross/mipsel-linux-gcc34/files/300-libstdc++-pic.patch
/opt/local/var/macports/sources/rsync.macports.org/release/tarballs/ports/cross/mipsel-linux-gcc34/files/602-sdk-libstdc++-includes.patch
/usr/gcc-5.1.0/lib/i386/libstdc++.6.dylib
/usr/gcc-5.1.0/lib/i386/libstdc++.a
/usr/gcc-5.1.0/lib/i386/libstdc++.a-gdb.py
/usr/gcc-5.1.0/lib/i386/libstdc++.dylib
/usr/gcc-5.1.0/lib/i386/libstdc++.la
/usr/gcc-5.1.0/lib/libstdc++.6.dylib
/usr/gcc-5.1.0/lib/libstdc++.a
/usr/gcc-5.1.0/lib/libstdc++.a-gdb.py
/usr/gcc-5.1.0/lib/libstdc++.dylib
/usr/gcc-5.1.0/lib/libstdc++.la
/usr/lib/libstdc++.6.0.9.dylib
/usr/lib/libstdc++.6.dylib
/usr/lib/libstdc++.dylib
/usr/llvm-gcc-4.2/lib/gcc/i686-apple-darwin11/4.2.1/libstdc++.dylib
/usr/local/lib/i386/libstdc++.6.dylib
/usr/local/lib/i386/libstdc++.a
/usr/local/lib/i386/libstdc++.a-gdb.py
/usr/local/lib/i386/libstdc++.dylib
/usr/local/lib/i386/libstdc++.la
/usr/local/lib/libstdc++.6.dylib
/usr/local/lib/libstdc++.a
/usr/local/lib/libstdc++.a-gdb.py
/usr/local/lib/libstdc++.dylib
/usr/local/lib/libstdc++.la
Sometimes I wonder how anything manages to get built at all.