diff --git a/m4/fp_settings.m4 b/m4/fp_settings.m4
index 59d01f32d3dfd36bc5001b1f1028c90eae8e6bdb..db03c6ee1a76bfacb8012ce75c79f1e237200667 100644
--- a/m4/fp_settings.m4
+++ b/m4/fp_settings.m4
@@ -106,19 +106,10 @@ 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