This file is part of mingw-cross-env. See doc/index.html for further information. This patch has been taken from: diff -ur fltk-1.3.x-r8659.orig/configure.in fltk-1.3.x-r8659/configure.in --- fltk-1.3.x-r8659.orig/configure.in 2011-03-07 03:54:58.000000000 +1100 +++ fltk-1.3.x-r8659/configure.in 2011-05-24 22:11:40.000000000 +1000 @@ -34,7 +34,7 @@ AC_INIT(src/Fl.cxx) dnl So --with-archflags option is used during "checking size of long" -if test `uname` = Darwin; then +if test `uname` = Darwin && test "x$cross_compiling" = xno ; then if test "x$with_archflags" != x ; then CFLAGS="$CFLAGS $with_archflags" fi