diff --git a/configure b/configure
index f3457ebaa..91336993a 100755
--- a/configure
+++ b/configure
@@ -4209,6 +4209,8 @@ fi
 
 needs_cpp_precomp=no
 
+LUA_CFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN"
+
 case "$host" in
   *alpha-dec-osf*)
     cat >>confdefs.h <<\_ACEOF
@@ -4494,8 +4496,6 @@ fi
     LUA_CFLAGS="-DLUA_USE_MACOSX"
     needs_cpp_precomp=yes
     ;;
-  *)
-   LUA_CFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN"
 esac
 
 
diff --git a/configure.ac b/configure.ac
index 6b9ffdbef..83e42bc63 100644
--- a/configure.ac
+++ b/configure.ac
@@ -104,6 +104,8 @@ AC_PATH_TOOL([STRIP], [strip], [/bin/true])
 
 needs_cpp_precomp=no
 
+LUA_CFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN"
+
 case "$host" in
   *alpha-dec-osf*)
     AC_DEFINE(DEC)
@@ -178,8 +180,6 @@ case "$host" in
     LUA_CFLAGS="-DLUA_USE_MACOSX"
     needs_cpp_precomp=yes
     ;;
-  *)
-   LUA_CFLAGS="-DLUA_USE_POSIX -DLUA_USE_DLOPEN"
 esac
 
 AC_SUBST(LUA_CFLAGS)