Add -f (force) flag

1 files changed, 8 insertions, 5 deletions

diff --git a/build.c b/build.c
index 6817b62..8b4e060 100644
--- a/build.c
+++ b/build.c
@@ -32,7 +32,7 @@ main(int argc, char *argv[])
 {
 	char *b, buf[MAXBUF], *cmd[MAXCMDS], *d, *dep, *name, *tgt;
 	FILE *fp;
-	int c, dflag, i, icmd, j;
+	int c, dflag, fflag, i, icmd, j;
 	struct stat sb, ssb;
 
 	/* allocate memory */
@@ -49,12 +49,15 @@ main(int argc, char *argv[])
 
 	/* process arguments */
 	name = argv[0];
-	dflag = 0;
-	while ((c = getopt(argc, argv, "d")) != -1)
+	dflag = fflag = 0;
+	while ((c = getopt(argc, argv, "df")) != -1)
 		switch (c) {
 		case 'd':
 			dflag++;
 			break;
+		case 'f':
+			fflag = 1;
+			break;
 		default:
 			fprintf(stderr, USAGE);
 			return 1;
@@ -112,7 +115,7 @@ main(int argc, char *argv[])
 			continue;
 		}
 
-		if (!*tgt)
+		if (fflag || !*tgt)
 			goto build;
 
 		/* compare source > target */
@@ -155,7 +158,7 @@ build:
 		/* run commands */
 		buf[0] = 0;
 		for (j = 0; j < icmd; j++) {
-			fprintf(stderr, "$ %s\n", cmd[j]);
+			fprintf(stderr, "%s: $ %s\n", argv[i], cmd[j]);
 			strncat(buf, cmd[j], MAXBUF-1);
 			strncat(buf, "\n", MAXBUF-1);
 		}