diff --git a/configure.ac b/configure.ac
index e9b49c7..e374ab6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -280,9 +280,6 @@ dnl **********************************************************************
 
 CURL_CHECK_COMPILER
 CURL_SET_COMPILER_BASIC_OPTS
-CURL_SET_COMPILER_DEBUG_OPTS
-CURL_SET_COMPILER_OPTIMIZE_OPTS
-CURL_SET_COMPILER_WARNING_OPTS
 
 if test "$compiler_id" = "INTEL_UNIX_C"; then
   #