1 files changed, 9 insertions, 2 deletions

diff --git a/gl/m4/getprogname.m4 b/gl/m4/getprogname.m4
index b24f4480..d60f3efb 100644
--- a/gl/m4/getprogname.m4
+++ b/gl/m4/getprogname.m4
@@ -1,9 +1,10 @@
 # getprogname.m4
-# serial 8
-dnl Copyright (C) 2016-2024 Free Software Foundation, Inc.
+# serial 9
+dnl Copyright (C) 2016-2026 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.
+dnl This file is offered as-is, without any warranty.
 
 # Check for getprogname or replacements for it
 
@@ -11,6 +12,12 @@ AC_DEFUN([gl_FUNC_GETPROGNAME],
 [
   AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
   AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+  AC_CHECK_HEADERS_ONCE([sys/process.h])
+  if test $ac_cv_header_sys_process_h = yes; then
+    HAVE_SYS_PROCESS_H=1
+  else
+    HAVE_SYS_PROCESS_H=0
+  fi
   gl_CHECK_FUNCS_ANDROID([getprogname], [[#include <stdlib.h>]])
   if test $ac_cv_func_getprogname = no; then
     HAVE_GETPROGNAME=0