diff --git a/configure.ac b/configure.ac
index ab24266fa09..db9440d73a7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -60,10 +60,7 @@ AC_PROG_SED
 AC_PROG_GREP
 AC_PROG_AWK
 
-AC_PROG_CC
 AC_PROG_CC_C99
-AM_PROG_CC_C_O
-AC_PROG_GCC_TRADITIONAL
 
 AC_PATH_PROG([M4], [m4])
 AC_PATH_PROG([XSLTPROC], [xsltproc])