https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66932
--- Comment #3 from Michael McWilliam <pilot.mm at gmail dot com> --- (In reply to Jonathan Wakely from comment #2) > Works for me too, with any version. > > gcc_bug$ which gcc > ~/gcc/4.9.3/bin/gcc > gcc_bug$ cd gas > gas$ ./compile.sh > ^[[3~In file included from ./../include/alloca-conf.h:2:0, > from as.h:2, > from as.c:2: > ./config.h:2:2: warning: #warning "You have included the correct include > file" [-Wcpp] > #warning "You have included the correct include file" > ^ > > > Please provide the output of: echo $CPATH $C_INCLUDE_PATH CPATH is empty C_INCLUDE_PATH is: :/usr/local/atlas/include:/usr/local/atlas/include/atlas:/usr/local/atlas/include:/usr/local/atlas/include/atlas So when I remove the leading : in C_INCLUDE_PATH and delete the duplicated entries, magically it works. So clearly there is an error on my machine on the way environment variables are being set... I will have to fix that... I suppose the problem is a NULL path in the variable leads to undefined behaviour... maybe gcc could be improved to ignore null paths or spit a warning or something?
