Add a debugging function that prints a message and appends the

current strerror.

2 files changed, 24 insertions, 0 deletions

diff --git a/usr.bin/make/util.c b/usr.bin/make/util.c
index ba11f4b..e0dbfdc 100644
--- a/usr.bin/make/util.c
+++ b/usr.bin/make/util.c
@@ -86,6 +86,24 @@ Debug(const char *fmt, ...)
 }
 
 /*-
+ * Print a debugging message given its format and append the current
+ * errno description. Terminate with a newline.
+ */
+/* VARARGS */
+void
+DebugM(const char *fmt, ...)
+{
+	va_list	ap;
+	int e = errno;
+
+	va_start(ap, fmt);
+	vfprintf(stderr, fmt, ap);
+	fprintf(stderr, ": %s\n", strerror(e));
+	va_end(ap);
+	fflush(stderr);
+}
+
+/*-
  * Error --
  *	Print an error message given its format.
  *
diff --git a/usr.bin/make/util.h b/usr.bin/make/util.h
index 1d65db0..84fc6b9 100644
--- a/usr.bin/make/util.h
+++ b/usr.bin/make/util.h
@@ -70,11 +70,17 @@ do {						\
 		Debug args ;			\
 	}					\
 } while (0)
+#define	DEBUGM(module, args) do {		\
+	if (DEBUG(module)) {			\
+		DebugM args;			\
+	}					\
+    } while (0)
 
 #define	ISDOT(c) ((c)[0] == '.' && (((c)[1] == '\0') || ((c)[1] == '/')))
 #define	ISDOTDOT(c) ((c)[0] == '.' && ISDOT(&((c)[1])))
 
 void Debug(const char *, ...);
+void DebugM(const char *, ...);
 void Error(const char *, ...);
 void Fatal(const char *, ...) __dead2;
 void Punt(const char *, ...) __dead2;