3 files changed, 14 insertions, 7 deletions
diff --git a/Makefile b/Makefile
index c8ef546..cded8f3 100644
--- a/Makefile
+++ b/Makefile
@@ -3,11 +3,15 @@
 CONFIGFILE = config.mk
 include $(CONFIGFILE)
 
+
 all: loc
 loc.o: loc.c arg.h
 
-loc: loc.o
-	$(CC) -o $@ loc.o $(LDFLAGS)
+.c.o:
+	$(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS)
+
+.o:
+	$(CC) -o $@ $< $(LDFLAGS)
 
 check: loc
 	test "$$(./loc < tests/0)" = 0
@@ -67,7 +71,7 @@ uninstall:
 	-rm -f -- "$(DESTDIR)$(MANPREFIX)/man1/loc.1"
 
 clean:
-	-rm -f -- loc.o loc
+	-rm -f -- *.o *.su loc
 
 .SUFFIXES:
 .SUFFIXES: .o .c
diff --git a/config.mk b/config.mk
index a61c851..aa81003 100644
--- a/config.mk
+++ b/config.mk
@@ -1,6 +1,8 @@
-PREFIX = /usr
+PREFIX    = /usr
 MANPREFIX = $(PREFIX)/share/man
 
+CC = cc
+
 CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700
-CFLAGS   = -std=c99 -Wall -O2 $(CPPFLAGS)
+CFLAGS   = -std=c99 -Wall -O2
 LDFLAGS  = -s
diff --git a/loc.c b/loc.c
index 855ad5b..1f309c8 100644
--- a/loc.c
+++ b/loc.c
@@ -11,6 +11,7 @@
 
 #include "arg.h"
 
+
 char *argv0;
 
 struct result {
@@ -168,7 +169,7 @@ main(int argc, char *argv[])
 		else
 			ret = 1;
 	} else {
-		if (!(res = calloc(argc, sizeof(struct result))))
+		if (!(res = calloc((size_t)argc, sizeof(struct result))))
 			fprintf(stderr, "%s: out of memory\n", argv0), exit(1);
 		for (i = 0; i < argc; i++) {
 			if (!strcmp(argv[i], "-")) {
@@ -182,7 +183,7 @@ main(int argc, char *argv[])
 			if (res[i].n >= 0) {
 				left = strwidth(argv[i]);
 				maxleft = left > maxleft ? left : maxleft;
-				right = zuwidth(res[i].n);
+				right = zuwidth((size_t)res[i].n);
 				maxright = right > maxright ? right : maxright;
 				res[i].width = left + right;
 			}