From d8a48784795cf71730717717f6b9f75be0b80d16 Mon Sep 17 00:00:00 2001
From: Mike Gabriel <mike.gabriel@das-netzwerkteam.de>
Date: Wed, 2 May 2018 15:12:24 +0200
Subject: Make building tests optional.

---
 Makefile.am  | 7 ++++---
 configure.ac | 3 ++-
 2 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 9477c1c..ce8de5e 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1,7 +1,8 @@
+SUBDIRS = src
 
-SUBDIRS = \
-	src \
-	tests
+if HAVE_GTEST
+SUBDIRS += tests
+endif
 
 DISTCHECK_CONFIGURE_FLAGS = --enable-localinstall
 
diff --git a/configure.ac b/configure.ac
index 05d66b9..6ac02c9 100644
--- a/configure.ac
+++ b/configure.ac
@@ -42,8 +42,9 @@ AC_SUBST(PAMMODULEDIR)
 m4_include([m4/gtest.m4])
 CHECK_GTEST
 if test "x$have_gtest" != "xyes"; then
-   AC_MSG_ERROR([tests were requested but gtest is not installed.])
+   AC_MSG_WARN([tests were requested but gtest is not installed.])
 fi
+AM_CONDITIONAL([HAVE_GTEST], [test "$have_gtest" != "no"])
 
 ###########################
 # gcov coverage reporting
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