add -Wmissing-prototypes

[spectrwm] / linux / Makefile

diff --git a/linux/Makefile b/linux/Makefile
index 79c152fdd182f0e5a160d4f065f4fb0bce208bd4..709fd82faf04ad9be0ac63644131c8e1dfa912ca 100644 (file)
--- a/linux/Makefile
+++ b/linux/Makefile
@@ -1,4 +1,4 @@
-CFLAGS+= -Wall -Wextra -Wshadow -g -D_GNU_SOURCE -I. -I/usr/include/freetype2
+CFLAGS+= -std=c99 -Wall -Wextra -Wmissing-prototypes -Wshadow -g -D_GNU_SOURCE -I. -I/usr/include/freetype2
 CFLAGS+= -DSWM_LIB=\"$(LIBDIR)/libswmhack.so.$(LVERS)\"
 LDADD+= -lX11 -lX11-xcb -lxcb -lxcb-icccm -lxcb-randr -lxcb-keysyms -lxcb-util -lxcb-xtest -lXft -lXcursor