When we build the JDK on solaris studio, we use -library=%none for both CFLAGS and LDFLAGS to ensure there are no dependencies to the C++ standard libraries in the resulting binaries. However, it is enough to do it only for LDFLAGS. Instead, CFLAGS could provide a reasonable C++ library such as -library=stlport4 that is already used by the gtest launcher. That way, header files with useful constants and other useful things that do not require linking may be used during the compilation.