From da16b33ab98602628d66ed4f434dc6fa76f338c6 Mon Sep 17 00:00:00 2001
From: Maria Matejka <mq@jmq.cz>
Date: Mon, 23 Apr 2018 15:54:20 +0200
Subject: [PATCH] Android: check for extra libs needed for build

---
 aclocal.m4   | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 configure.ac | 14 +++++++++++
 2 files changed, 79 insertions(+)

diff --git a/aclocal.m4 b/aclocal.m4
index 8160e539..dcf1bd8b 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -65,6 +65,71 @@ AC_DEFUN([BIRD_CHECK_MPLS_KERNEL],
   )
 ])
 
+AC_DEFUN([BIRD_CHECK_ANDROID_GLOB],
+[
+  AC_CACHE_CHECK(
+    [for glob.h],
+    [bird_cv_lib_glob],
+    AC_LINK_IFELSE([
+      AC_LANG_PROGRAM(
+        [
+	  #include <glob.h>
+	  #include <stdlib.h>
+	],
+        [ glob(NULL, 0, NULL, NULL); ]
+      )
+    ],
+    [bird_cv_lib_glob=yes],
+      [
+        bird_tmp_libs="$LIBS"
+        LIBS="$LIBS -landroid-glob"
+        AC_LINK_IFELSE([
+          AC_LANG_PROGRAM(
+            [
+	      #include <glob.h>
+	      #include <stdlib.h>
+	    ],
+            [ glob(NULL, 0, NULL, NULL); ]
+          )
+        ],
+        [bird_cv_lib_glob=-landroid-glob],
+        [bird_cv_lib_glob=no]
+        )
+        LIBS="$bird_tmp_libs"
+      ]
+    )
+  )
+])
+
+AC_DEFUN([BIRD_CHECK_ANDROID_LOG],
+[
+  AC_CACHE_CHECK(
+    [for syslog lib flags],
+    [bird_cv_lib_log],
+    AC_LINK_IFELSE([
+      AC_LANG_PROGRAM(
+        [ #include <sys/syslog.h> ],
+        [ syslog(0, ""); ]
+      )
+    ],
+    [bird_cv_lib_log=yes],
+      [
+        bird_tmp_libs="$LIBS"
+        LIBS="$LIBS -llog"
+        AC_LINK_IFELSE([
+          AC_LANG_PROGRAM(
+            [ #include <sys/syslog.h> ],
+            [ syslog(0, ""); ]
+          )
+        ],
+        [bird_cv_lib_log=-llog],
+        [bird_cv_lib_log=no]
+        )
+        LIBS="$bird_tmp_libs"
+      ]
+    )
+  )
+])
 
 AC_DEFUN([BIRD_CHECK_GCC_OPTION],
 [
diff --git a/configure.ac b/configure.ac
index f4de8f93..44184273 100644
--- a/configure.ac
+++ b/configure.ac
@@ -315,6 +315,20 @@ AC_C_BIGENDIAN(
   [AC_MSG_ERROR([Cannot determine CPU endianity.])]
 )
 
+BIRD_CHECK_ANDROID_GLOB
+if test "$bird_cv_lib_glob" = no ; then
+  AC_MSG_ERROR([glob.h not found.])
+elif test "$bird_cv_lib_glob" != yes ; then
+  LIBS="$LIBS $bird_cv_lib_glob"
+fi
+
+BIRD_CHECK_ANDROID_LOG
+if test "$bird_cv_lib_log" = no ; then
+  AC_MSG_ERROR([don't know how to link syslog.])
+elif test "$bird_cv_lib_log" != yes ; then
+  LIBS="$LIBS $bird_cv_lib_log"
+fi
+
 if test "$enable_debug" = yes ; then
   AC_DEFINE([DEBUGGING], [1], [Define to 1 if debugging is enabled])
   LDFLAGS="$LDFLAGS -rdynamic"