Merge branch 'c++1y-checks' into use_optional

.travis.yml

@@ -2,10 +2,17 @@ language: cpp
 compiler:
   - gcc
   - clang
+env:
+  - SDL2PP_CSTD=c++11
+  - SDL2PP_CSTD=c++1y
 before_install:
   - sudo add-apt-repository --yes ppa:zoogie/sdl2-snapshots
   - sudo add-apt-repository --yes ppa:ubuntu-toolchain-r/test
   - sudo apt-get update -qq
   - sudo apt-get install -qq cmake libsdl2-dev libsdl2-image-dev g++-4.8
   - if [ "$CXX" = "g++" ]; then export CXX="g++-4.8" CC="gcc-4.8"; fi
-script: cmake . -DSDL2PP_ENABLE_GUI_TEST=OFF -DCMAKE_INSTALL_PREFIX=`pwd`/_prefix -DSDL2PP_WITH_WERROR=YES && make && make test && make install
+script:
+  - cmake . -DSDL2PP_ENABLE_GUI_TEST=OFF -DCMAKE_INSTALL_PREFIX=`pwd`/_prefix -DSDL2PP_WITH_WERROR=YES -DSDL2PP_CSTD=$SDL2PP_CSTD
+  - make
+  - make test
+  - make install

CMakeLists.txt

@@ -16,6 +16,8 @@ SET(SDL2PP_VERSION "${SDL2PP_MAJOR_VERSION}.${SDL2PP_MINOR_VERSION}.${SDL2PP_PAT
 OPTION(SDL2PP_WITH_2_0_4 "Enable new functions available only in SDL2 2.0.4+" OFF)
 OPTION(SDL2PP_WITH_WERROR "Make warnings fatal" OFF)
 
+SET(SDL2PP_CSTD "c++11" CACHE STRING "Used c++ standard")
+
 IF(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
 	OPTION(SDL2PP_WITH_IMAGE "Enable SDL2_image support" ON)
 ELSE(CMAKE_SOURCE_DIR STREQUAL PROJECT_SOURCE_DIR)
@@ -39,7 +41,7 @@ IF(MSVC)
 	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W3")
 	SET(WERROR_FLAG "/WX")
 ELSE(MSVC)
-	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall -Wextra -pedantic")
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=${SDL2PP_CSTD} -Wall -Wextra -pedantic")
 	SET(WERROR_FLAG "-Werror")
 ENDIF(MSVC)
 
@@ -52,6 +54,19 @@ IF(SDL2PP_WITH_WERROR)
 	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WERROR_FLAG}")
 ENDIF(SDL2PP_WITH_WERROR)
 
+# platform checks
+INCLUDE(CheckCompile)
+CHECK_COMPILE(
+	SDL2PP_WITH_EXPERIMENTAL_OPTIONAL
+	${PROJECT_SOURCE_DIR}/cmake/std_experimental_optional_test.cc
+	"Checking for experimental/optional header"
+)
+CHECK_COMPILE(
+	SDL2PP_WITH_DEPRECATED
+	${PROJECT_SOURCE_DIR}/cmake/attribute_deprecated_test.cc
+	"Checking for [[deprecated]] attribute"
+)
+
 # config.h
 CONFIGURE_FILE(
 	SDL2pp/Config.hh.in
@@ -82,6 +97,7 @@ SET(LIBRARY_HEADERS
 	SDL2pp/AudioSpec.hh
 	SDL2pp/ContainerRWops.hh
 	SDL2pp/Exception.hh
+	SDL2pp/Optional.hh
 	SDL2pp/Point.hh
 	SDL2pp/RWops.hh
 	SDL2pp/Rect.hh

SDL2pp/Config.hh.in

@@ -30,5 +30,13 @@
 
 #cmakedefine SDL2PP_WITH_IMAGE
 #cmakedefine SDL2PP_WITH_2_0_4
+#cmakedefine SDL2PP_WITH_EXPERIMENTAL_OPTIONAL
+#cmakedefine SDL2PP_WITH_DEPRECATED
+
+#if defined(SDL2PP_WITH_DEPRECATED)
+#	define SDL2PP_DEPRECATED [[deprecated]]
+#else
+#	define SDL2PP_DEPRECATED
+#endif
 
 #endif

SDL2pp/Optional.hh

@@ -22,7 +22,26 @@
 #ifndef SDL2PP_OPTIONAL_HH
 #define SDL2PP_OPTIONAL_HH
 
-#include <SDL2pp/libcpp_optional.hh>
+#include <SDL2pp/Config.hh>
+
+#if defined(SDL2PP_WITH_EXPERIMENTAL_OPTIONAL)
+
+#	include <experimental/optional>
+
+namespace SDL2pp {
+
+template<typename T>
+using Optional = std::experimental::optional<T>;
+
+using BadOptionalAccess = std::experimental::bad_optional_access;
+
+constexpr std::experimental::nullopt_t NullOpt = std::experimental::nullopt;
+
+}
+
+#else
+
+#	include <SDL2pp/external/libcpp_optional.hh>
 
 namespace SDL2pp {
 
@@ -36,3 +55,5 @@ constexpr sdl2pp_libcpp_optional::nullopt_t NullOpt = sdl2pp_libcpp_optional::nu
 }
 
 #endif
+
+#endif

cmake/CheckCompile.cmake

@@ -0,0 +1,11 @@
+MACRO(CHECK_COMPILE RESULT_VAR SOURCE_FILE DESCRIPTION)
+	SET(SAVED_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
+	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WERROR_FLAG}")
+	TRY_COMPILE(${RESULT_VAR} ${CMAKE_BINARY_DIR} ${SOURCE_FILE})
+	IF(${RESULT_VAR})
+		MESSAGE(STATUS "${DESCRIPTION}: yes")
+	ELSE(${RESULT_VAR})
+		MESSAGE(STATUS "${DESCRIPTION}: no")
+	ENDIF(${RESULT_VAR})
+	SET(CMAKE_CXX_FLAGS "${SAVED_CXX_FLAGS}")
+ENDMACRO(CHECK_COMPILE)

cmake/attribute_deprecated_test.cc

@@ -0,0 +1,7 @@
+[[deprecated]]
+void f() {
+}
+
+int main() {
+	return 0;
+}

cmake/std_experimental_optional_test.cc

@@ -0,0 +1,8 @@
+#include <experimental/optional>
+#include <string>
+
+int main() {
+	std::experimental::optional<std::string> o;
+
+	return !o;
+}