Merge topic 'target_compile_features'

9eaf3755 Export: Populate INTERFACE_COMPILE_FEATURES property.
8ed59fc2 Add target_compile_features command.
4e6ca504 cmTargetPropCommandBase: Change the interface to return bool.
5412dede cmTarget: Transitively evaluate compiler features.
baff4434 cmTarget: Allow populating COMPILE_FEATURES using generator expressions.
f97bf437 Features: Add cxx_auto_type.
03355d6b cmTarget: Add COMPILE_FEATURES target property.
faeddf64 project: Add infrastructure for recording CXX compiler features
913394af cmTarget: Add CXX_STANDARD and CXX_EXTENSION target properties.
8238a6cd Add some COMPILE_OPTIONS for specifying C++ dialect.
892243fc Tests: Require CMake 3.0 for the SystemInformation test.
59b5fdd3 Don't load Clang-CXX from AppleClang-CXX.

3 files changed, 47 insertions, 0 deletions

diff --git a/Tests/CompileFeatures/CMakeLists.txt b/Tests/CompileFeatures/CMakeLists.txt
new file mode 100644
index 0000000..bceb6bb
--- /dev/null
+++ b/Tests/CompileFeatures/CMakeLists.txt
@@ -0,0 +1,36 @@
+
+cmake_minimum_required(VERSION 3.0)
+
+project(CompileFeatures)
+
+macro(run_test feature)
+  if (";${CMAKE_CXX_COMPILE_FEATURES};" MATCHES ${feature})
+    add_library(test_${feature} OBJECT ${feature}.cpp)
+    set_property(TARGET test_${feature}
+      PROPERTY COMPILE_FEATURES "${feature}"
+    )
+  else()
+    message("Not supported: ${feature}")
+  endif()
+endmacro()
+
+foreach(feature ${CMAKE_CXX_KNOWN_FEATURES})
+  run_test(${feature})
+endforeach()
+
+add_executable(CompileFeatures main.cpp)
+set_property(TARGET CompileFeatures
+  PROPERTY COMPILE_FEATURES "cxx_auto_type"
+)
+
+add_executable(GenexCompileFeatures main.cpp)
+set_property(TARGET GenexCompileFeatures
+  PROPERTY COMPILE_FEATURES "$<1:cxx_auto_type>;$<0:not_a_feature>"
+)
+
+add_library(iface INTERFACE)
+set_property(TARGET iface
+  PROPERTY INTERFACE_COMPILE_FEATURES "cxx_auto_type"
+)
+add_executable(IfaceCompileFeatures main.cpp)
+target_link_libraries(IfaceCompileFeatures iface)
diff --git a/Tests/CompileFeatures/cxx_auto_type.cpp b/Tests/CompileFeatures/cxx_auto_type.cpp
new file mode 100644
index 0000000..7dbf04f
--- /dev/null
+++ b/Tests/CompileFeatures/cxx_auto_type.cpp
@@ -0,0 +1,5 @@
+
+void someFunc()
+{
+  auto x = 3.14;
+}
diff --git a/Tests/CompileFeatures/main.cpp b/Tests/CompileFeatures/main.cpp
new file mode 100644
index 0000000..3a8e0fc
--- /dev/null
+++ b/Tests/CompileFeatures/main.cpp
@@ -0,0 +1,6 @@
+
+int main(int,char**)
+{
+  auto value = 0;
+  return value;
+}