diff --git a/unix/configure b/unix/configure
index c6c0c459..dc33ee39 100755
--- a/unix/configure
+++ b/unix/configure
@@ -6321,7 +6321,7 @@ fi
 
 # Output.
 
-S9XFLGS="$S9XFLGS $CXXFLAGS $CPPFLAGS $LDFLAGS"
+S9XFLGS="$CXXFLAGS $CPPFLAGS $LDFLAGS $S9XFLGS"
 S9XLIBS="$LIBS $S9XLIBS"
 
 S9XFLGS="`echo \"$S9XFLGS\" | sed -e 's/  */ /g'`"
diff --git a/unix/configure.ac b/unix/configure.ac
index 382a59de..a1fa88a2 100644
--- a/unix/configure.ac
+++ b/unix/configure.ac
@@ -452,7 +452,7 @@ fi
 
 # Output.
 
-S9XFLGS="$S9XFLGS $CXXFLAGS $CPPFLAGS $LDFLAGS"
+S9XFLGS="$CXXFLAGS $CPPFLAGS $LDFLAGS $S9XFLGS"
 S9XLIBS="$LIBS $S9XLIBS"
 
 S9XFLGS="`echo \"$S9XFLGS\" | sed -e 's/  */ /g'`"