Improve makefile and compilation flags

Reformatted makefile, removed unneeded macros, made makefile adhere to
POSIX standard, and added compiler standard, optimization, and warning
flags.

1 files changed, 20 insertions, 22 deletions

diff --git a/Makefile b/Makefile
index 8ab5966..dcd1e81 100644
--- a/Makefile
+++ b/Makefile
@@ -1,32 +1,30 @@
 #	$NetBSD: Makefile,v 1.22 2023/06/03 09:09:09 lukem Exp $
 #	@(#)Makefile	8.1 (Berkeley) 5/31/93
 
-PROG=	rogue
-PREFIX=	/usr/local
-BIN_DIR:=$(PREFIX)/bin
-CPPFLAGS+=-DUNIX -DUNIX_SYSV
-SRCS=	hit.c init.c inventory.c level.c machdep.c main.c \
-	message.c monster.c move.c object.c pack.c play.c random.c ring.c \
-	room.c save.c score.c spec_hit.c throw.c trap.c use.c zap.c \
-	pathnames.c
-OBJS=	hit.o init.o inventory.o level.o machdep.o main.o \
-	message.o monster.o move.o object.o pack.o play.o random.o ring.o \
-	room.o save.o score.o spec_hit.o throw.o trap.o use.o zap.o \
-	pathnames.o
-HEADERS=rogue.h pathnames.h
-DPADD=	${LIBCURSES} ${LIBTERMINFO}
-LDADD=	-lcurses -lterminfo
-MAN=	rogue.6
-
-SUBDIR.roff+=USD.doc
-
-COPTS.score.c+=	${CC_WNO_FORMAT_TRUNCATION}
+.POSIX:
+
+PROG = rogue
+PREFIX = /usr/local
+BIN_DIR = $(PREFIX)/bin
+MAN = rogue.6
+
+CC = cc
+CFLAGS = -std=c99 -O2 -Wall -Wextra -Wpedantic
+CPPFLAGS = -DUNIX -DUNIX_SYSV
+LDLIBS = -lcurses
+
+SRCS != find . -name '*.c' -exec basename {} +
+OBJS != echo $(SRCS) | awk '{gsub(/\.c/, ".o"); print}'
+HEADERS != find . -name '*.h' -exec basename {} +
 
 $(PROG): $(OBJS)
-	cc -o $@ -lcurses $(OBJS)
+	cc -o $@ $(LDLIBS) $(OBJS)
 
 $(OBJS): $(HEADERS)
 
+.c.o:
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c $<
+
 .PHONY: install
 install: $(PROG)
 	chmod 755 $(PROG)
@@ -41,4 +39,4 @@ clean:
 	rm -f $(PROG) $(OBJS) tags
 
 tags:
-	ctags -d *.c *.h
+	ctags -d $(SRCS) $(HEADERS)