1 files changed, 43 insertions, 0 deletions
diff --git a/gnulib-m4/random_r.m4 b/gnulib-m4/random_r.m4
new file mode 100644
index 00000000..6c5457e9
--- /dev/null
+++ b/gnulib-m4/random_r.m4
@@ -0,0 +1,43 @@
+# serial 5
+dnl Copyright (C) 2008-2024 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.
+
+AC_DEFUN([gl_FUNC_RANDOM_R],
+[
+  AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
+  AC_REQUIRE([AC_CANONICAL_HOST])
+
+  AC_CHECK_HEADERS([random.h], [], [], [AC_INCLUDES_DEFAULT])
+  if test $ac_cv_header_random_h = no; then
+    HAVE_RANDOM_H=0
+  fi
+
+  AC_CHECK_TYPES([struct random_data],
+    [], [HAVE_STRUCT_RANDOM_DATA=0],
+    [[#include <stdlib.h>
+      #if HAVE_RANDOM_H
+      # include <random.h>
+      #endif
+    ]])
+
+  dnl On AIX and OSF/1, these functions exist, but with different declarations.
+  dnl Override them all.
+  case "$host_os" in
+    aix* | osf*)
+      REPLACE_RANDOM_R=1
+      ;;
+    *)
+      AC_CHECK_FUNCS([random_r])
+      if test $ac_cv_func_random_r = no; then
+        HAVE_RANDOM_R=0
+      fi
+      ;;
+  esac
+])
+
+# Prerequisites of lib/random_r.c.
+AC_DEFUN([gl_PREREQ_RANDOM_R], [
+  :
+])