Fix build with musl on alpine.

strdup() and reapath() prototypes were missing

Author: nedko

mod_notionflux/notionflux/Makefile

@@ -13,6 +13,8 @@ SOURCES=notionflux.c
 
 TARGETS=notionflux
 
+CFLAGS += $(POSIX_SOURCE)
+CFLAGS += $(XOPEN_SOURCE)
 CFLAGS += $(C99_SOURCE)
 
 INCLUDES += $(X11_INCLUDES) $(LUA_INCLUDES) $(READLINE_INCLUDES) -I$(TOPDIR)