Problem with gcc -c parameter and set an outfile

Question

I've a question about GCC and objects file..

In few words when I try to do this command:

gcc -Wall -o obj/config.o -c global.h config/config.c

It's simply returns this fatal error:

gcc: fatal error: cannot specify -o with -c, -S or -E with multiple files

I've tried to search on Google, but I've not found anything about it. Maybe I used wrong keywords... Anyone can help?

things gone wrong also if I use only "-o config.o" – Giuseppe May 30 '19 at 23:41 — Giuseppe, May 30 '19 at 23:41
why are you specifiying the `global.h` (isn't it included?) – thebjorn May 30 '19 at 23:44 — thebjorn, May 30 '19 at 23:44

score 2 · Accepted Answer · answered May 30 '19 at 23:45

2

.h header files don't get directly compiled, only .c source files. Get rid of global.h.

gcc -Wall -o obj/config.o -c config/config.c

answered May 30 '19 at 23:45

John Kugelman

gcc allows direct compilation of `h` files with the default behaviour based on file extension being to generate a precompiled header. (Probably not what OP wants though) – M.M May 31 '19 at 01:21

1 Answers1