I have a program called zone.c that uses the allegro5 library.
I have a makefile that consists of just these two lines.
zone: zone.c
gcc zone.c -o zone $(pkg-config --cflags --libs allegro-5.0 allegro_primitives-5.0)
when I type "make" I get these errors:
/tmp/ccyCx3Hy.o: In function main':
zone.c:(.text+0x14): undefined reference toal_install_system'
zone.c:(.text+0x23): undefined reference to al_create_display'
zone.c:(.text+0x3b): undefined reference toal_map_rgb'
zone.c:(.text+0x70): undefined reference to al_clear_to_color'
zone.c:(.text+0x84): undefined reference toal_map_rgb'
zone.c:(.text+0xd1): undefined reference to al_draw_filled_circle'
zone.c:(.text+0xe5): undefined reference toal_map_rgb'
zone.c:(.text+0x132): undefined reference to al_draw_filled_circle'
zone.c:(.text+0x137): undefined reference toal_flip_display'
zone.c:(.text+0x14f): undefined reference to al_rest'
zone.c:(.text+0x15b): undefined reference toal_destroy_display'
collect2: error: ld returned 1 exit status
make: * [zone] Error 1
But if I just copy out the line "gcc zone.c -o zone $(pkg-config --cflags --libs allegro-5.0 allegro_primitives-5.0)" and run it manually, it compiles fine and the program works.
If I use similar makefiles to compile programmes that don't use allegro5, then make works.
Does anybody have a clue what's going on?
If you want a literal $ in your rule, you have to escape it from make by writing $$ instead:
zone: zone.c
gcc zone.c -o zone $$(pkg-config --cflags --libs allegro-5.0 allegro_primitives-5.0)