diff --git a/m4/fp_settings.m4 b/m4/fp_settings.m4
index 05c30c18bb24319df6341b1fbe5cd69c6ed0c82e..829d03a2e5600267712e26fe63fa77ec395e78f1 100644
--- a/m4/fp_settings.m4
+++ b/m4/fp_settings.m4
@@ -123,19 +123,10 @@ AC_DEFUN([FP_SETTINGS],
     fi
 
     # LLVM backend tools
-    if test -z "$LlcCmd"; then
-        LlcCmd="llc"
-    fi
     SettingsLlcCommand="$LlcCmd"
 
-    if test -z "$OptCmd"; then
-        OptCmd="opt"
-    fi
     SettingsOptCommand="$OptCmd"
 
-    if test -z "$LlvmAsCmd"; then
-        LlvmAsCmd="clang"
-    fi
     SettingsLlvmAsCommand="$LlvmAsCmd"
 
     # Mac-only tools