http://gcc.gnu.org/bugzilla/show_bug.cgi?id=53155
--- Comment #2 from Marc Glisse <marc.glisse at normalesup dot org> 2012-04-28 21:49:43 UTC --- laptop-mg /tmp/m $ cat Makefile all: $(MAKE) plouf plouf: echo $(MFLAGS) "$(filter -j, $(MFLAGS))" laptop-mg /tmp/m $ make -j make plouf make[1]: Entering directory `/tmp/m' echo -wj "" -wj make[1]: Leaving directory `/tmp/m' version 3.81-8.2