--- a/fltk-config.in
+++ b/fltk-config.in
@@ -42,9 +42,8 @@
 
 # flags for C++ compiler:
 ARCHFLAGS="@ARCHFLAGS@"
-CFLAGS="@CFLAGS@ @LARGEFILE@ @PTHREAD_FLAGS@"
-CXXFLAGS="@CXXFLAGS@ @LARGEFILE@ @PTHREAD_FLAGS@"
-LDFLAGS="@LDFLAGS@"
+CFLAGS=" @LARGEFILE@ @PTHREAD_FLAGS@"
+CXXFLAGS=" @LARGEFILE@ @PTHREAD_FLAGS@"
 LDLIBS="@LIBS@"
 OPTIM="@OPTIM@"
 CAIROFLAGS="@CAIROFLAGS@"