1 files changed, 7 insertions, 9 deletions

diff --git a/gl/m4/stddef_h.m4 b/gl/m4/stddef_h.m4
index 1303d2e..abfd203 100644
--- a/gl/m4/stddef_h.m4
+++ b/gl/m4/stddef_h.m4
@@ -1,5 +1,5 @@
-# stddef_h.m4 serial 11
-dnl Copyright (C) 2009-2021 Free Software Foundation, Inc.
+# stddef_h.m4 serial 12
+dnl Copyright (C) 2009-2022 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
@@ -14,7 +14,7 @@ AC_DEFUN_ONCE([gl_STDDEF_H],
   dnl Persuade OpenBSD <stddef.h> to declare max_align_t.
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
 
-  STDDEF_H=
+  GL_GENERATE_STDDEF_H=false
 
   dnl Test whether the type max_align_t exists and whether its alignment
   dnl "is as great as is supported by the implementation in all contexts".
@@ -41,12 +41,12 @@ AC_DEFUN_ONCE([gl_STDDEF_H],
     ])
   if test $gl_cv_type_max_align_t = no; then
     HAVE_MAX_ALIGN_T=0
-    STDDEF_H=stddef.h
+    GL_GENERATE_STDDEF_H=true
   fi
 
   if test $gt_cv_c_wchar_t = no; then
     HAVE_WCHAR_T=0
-    STDDEF_H=stddef.h
+    GL_GENERATE_STDDEF_H=true
   fi
 
   AC_CACHE_CHECK([whether NULL can be used in arbitrary expressions],
@@ -58,12 +58,10 @@ AC_DEFUN_ONCE([gl_STDDEF_H],
       [gl_cv_decl_null_works=no])])
   if test $gl_cv_decl_null_works = no; then
     REPLACE_NULL=1
-    STDDEF_H=stddef.h
+    GL_GENERATE_STDDEF_H=true
   fi
 
-  AC_SUBST([STDDEF_H])
-  AM_CONDITIONAL([GL_GENERATE_STDDEF_H], [test -n "$STDDEF_H"])
-  if test -n "$STDDEF_H"; then
+  if $GL_GENERATE_STDDEF_H; then
     gl_NEXT_HEADERS([stddef.h])
   fi
 ])