http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49149
--- Comment #3 from Zaak <zbeekman at gmail dot com> 2011-08-31 19:49:20 UTC --- When I pass -E some strange behaviour occurs. First of all the code is preprocessed with the c preprocessor and unless the -o flag is passed the output is written to standard out, so this text will get included in the .d dependency definition files which are to be included in the makefile. One can avoid this issue if one passes -o /dev/null or does something clever with sed. A second side effect of -E is that the module dependencies are no longer included in the output which again renders this useless. After passing through the sed command (as outlined in the GNU Make documentation) the last line of modtypes.d went from: modtypes.o types.mod: modtypes.f90 to modtypes.o: modtypes.f90
