http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55821
Tobias Burnus <burnus at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |burnus at gcc dot gnu.org --- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> 2012-12-28 10:21:13 UTC --- Let me try to understand: * The release tar balls contain the pre-build .info files of all front ends and libraries. * Building the source and running "make install" installs the compilers including the .info of all build FEs/libraries but also unconditionally libquadmath's .info file (if it is present), even on systems where libquadmath itself has not been build. Currently, libquadmath is always configured (unless --disable-libquadmath has been used) and the configure script checks whether __float128 is available. Only if it is, the library is build. It uses BUILD_LIBQUADMATH for that purpose. It seems as if libquadmath/Makefile.am has to be modified. However, that might be not as simple, if one believes the comment: ... endif BUILD_LIBQUADMATH # Unconditionally override this target, so that automake's definition # does not wrongly interfere. libquadmath.info: $(STAMP_BUILD_INFO)