diff --git a/gdtoa/.gitignore b/gdtoa/.gitignore
index 253c5697..e8796544 100644
--- a/gdtoa/.gitignore
+++ b/gdtoa/.gitignore
@@ -1,5 +1,9 @@
+/Makefile.in
+/acconf.h.in
+/aclocal.m4
 /config.guess
 /config.sub
+/configure
 /depcomp
 /install-sh
 /ltmain.sh