>From 3c82739c334a42470f2b3bbbada10138f04813b1 Mon Sep 17 00:00:00 2001
From: Bruno Haible <address@hidden>
Date: Sun, 13 May 2018 15:49:40 +0200
Subject: [PATCH 2/9] random: Fix compilation error on Android.

* m4/random.m4 (gl_FUNC_RANDOM): Use AC_LINK_IFELSE instead of
AC_CHECK_FUNC.
---
 ChangeLog    |  6 ++++++
 m4/random.m4 | 16 +++++++++++++---
 2 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 2c6eab8..908d4ea 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2018-05-13  Bruno Haible  <address@hidden>
 
+	random: Fix compilation error on Android.
+	* m4/random.m4 (gl_FUNC_RANDOM): Use AC_LINK_IFELSE instead of
+	AC_CHECK_FUNC.
+
+2018-05-13  Bruno Haible  <address@hidden>
+
 	grantpt: Fix compilation error on Android.
 	* m4/grantpt.m4 (gl_FUNC_GRANTPT): Use AC_LINK_IFELSE instead of
 	AC_CHECK_FUNC.
diff --git a/m4/random.m4 b/m4/random.m4
index ba9cf3b..dd4d6fe 100644
--- a/m4/random.m4
+++ b/m4/random.m4
@@ -1,4 +1,4 @@
-# random.m4 serial 2
+# random.m4 serial 3
 dnl Copyright (C) 2012-2018 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
@@ -8,8 +8,18 @@ AC_DEFUN([gl_FUNC_RANDOM],
 [
   AC_REQUIRE([gl_STDLIB_H_DEFAULTS])
 
-  AC_CHECK_FUNCS([random])
-  if test $ac_cv_func_random = no; then
+  dnl We can't use AC_CHECK_FUNC here, because random() is defined as a
+  dnl static inline function when compiling for Android 4.4 or older.
+  AC_CACHE_CHECK([for random], [gl_cv_func_random],
+    [AC_LINK_IFELSE(
+       [AC_LANG_PROGRAM(
+          [[#include <stdlib.h>]],
+          [[return random() == 0;]])
+       ],
+       [gl_cv_func_random=yes],
+       [gl_cv_func_random=no])
+    ])
+  if test $gl_cv_func_random = no; then
     HAVE_RANDOM=0
   fi
 
-- 
2.7.4