From e3dc9a7af6f8f88ff7503bc3a70178e47802868d Mon Sep 17 00:00:00 2001
From: Mariusz Ceier <mceier+wayland@gmail.com>
Date: Mon, 15 Dec 2014 11:33:53 +0100
Subject: [PATCH] tests: C++ compilation test
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This test includes one of wayland headers, which produced
error with C++ compiler. C compiler can't be used for this test,
because it issues only a warning[1] and only when wayland headers
are not installed in system headers path (/usr/include).

[1] wayland-server-protocol.h:201:2: warning: implicit declaration of function ‘wl_resource_post_event’

[daniels: Merged in Marek's follow-up to check for a C++ compiler.]

Signed-off-by: Mariusz Ceier <mceier+wayland@gmail.com>
Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Daniel Stone <daniels@collabora.com>
---
 Makefile.am                |  8 ++++++++
 configure.ac               | 12 ++++++++++++
 tests/cpp-compile-test.cpp |  5 +++++
 3 files changed, 25 insertions(+)
 create mode 100644 tests/cpp-compile-test.cpp

diff --git a/Makefile.am b/Makefile.am
index 1551762..43b741a 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -130,6 +130,10 @@ TESTS =						\
 	resources-test				\
 	message-test
 
+if ENABLE_CPP_TEST
+TESTS += cpp-compile-test
+endif
+
 check_PROGRAMS =				\
 	$(TESTS)				\
 	exec-fd-leak-checker
@@ -181,6 +185,10 @@ resources_test_LDADD = libtest-runner.la
 message_test_SOURCES = tests/message-test.c
 message_test_LDADD = libtest-runner.la
 
+if ENABLE_CPP_TEST
+cpp_compile_test_SOURCES = tests/cpp-compile-test.cpp
+endif
+
 fixed_benchmark_SOURCES = tests/fixed-benchmark.c
 fixed_benchmark_LDADD = libtest-runner.la
 
diff --git a/configure.ac b/configure.ac
index 0249002..e749b00 100644
--- a/configure.ac
+++ b/configure.ac
@@ -26,6 +26,18 @@ AM_SILENT_RULES([yes])
 
 # Check for programs
 AC_PROG_CC
+AC_PROG_CXX
+
+# check if we have C++ compiler. This is hacky workaround,
+# for a reason why it is this way see
+# http://lists.gnu.org/archive/html/bug-autoconf/2010-05/msg00001.html
+have_cpp_compiler=yes
+
+if ! which "$CXX" &>/dev/null; then
+	have_cpp_compiler=no
+fi
+
+AM_CONDITIONAL(ENABLE_CPP_TEST, test "x$have_cpp_compiler" = "xyes")
 
 # Initialize libtool
 LT_PREREQ([2.2])
diff --git a/tests/cpp-compile-test.cpp b/tests/cpp-compile-test.cpp
new file mode 100644
index 0000000..1e84e63
--- /dev/null
+++ b/tests/cpp-compile-test.cpp
@@ -0,0 +1,5 @@
+/* This source should compile fine with C++ compiler */
+#include "wayland-server-protocol.h"
+
+int main() { return 0; }
+
-- 
2.7.4