diff --git a/src/pkg/runtime/Makefile b/src/pkg/runtime/Makefile
index 6571d802d4d..a8e7bc75091 100644
--- a/src/pkg/runtime/Makefile
+++ b/src/pkg/runtime/Makefile
@@ -132,7 +132,7 @@ version.go: mkversion
 	./mkversion >version.go
 
 %.c:	%.goc goc2c
-	./goc2c $< > $@.tmp
+	./goc2c `pwd`/$< > $@.tmp
 	mv -f $@.tmp $@
 
 %.$O:	$(GOARCH)/%.c
diff --git a/src/pkg/runtime/goc2c.c b/src/pkg/runtime/goc2c.c
index 385b885855b..826ceff3ab1 100644
--- a/src/pkg/runtime/goc2c.c
+++ b/src/pkg/runtime/goc2c.c
@@ -28,7 +28,7 @@ static int gcc;
 
 /* File and line number */
 static const char *file;
-static unsigned int lineno;
+static unsigned int lineno = 1;
 
 /* List of names and types.  */
 struct params {