Revert topic 'compiler-features-solaris'

Revert commit v3.4.0-rc1~10^2~2 (Features: Disable support for Oracle
SolarisStudio on non-Linux, 2015-09-29) and two follow-up commits.
The support of compile features and language standards on Orcale
SolarisStudio needs more investigation so for CMake 3.4 we should
just act as 3.3 did.

Help/manual/cmake-compile-features.7.rst

@@ -308,4 +308,4 @@ versions specified for each:
 * ``Clang``: Clang compiler versions 2.9 through 3.4.
 * ``GNU``: GNU compiler versions 4.4 through 5.0.
 * ``MSVC``: Microsoft Visual Studio versions 2010 through 2015.
-* ``SunPro``: Oracle SolarisStudio version 12.4 on a Linux host.
+* ``SunPro``: Oracle SolarisStudio version 12.4.

Modules/Compiler/SunPro-CXX.cmake

@@ -31,21 +31,17 @@ set(CMAKE_CXX_CREATE_STATIC_LIBRARY
   "<CMAKE_CXX_COMPILER> -xar -o <TARGET> <OBJECTS> "
   "<CMAKE_RANLIB> <TARGET> ")
 
-if (CMAKE_SYSTEM_NAME STREQUAL Linux)
-  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
-    set(CMAKE_CXX98_STANDARD_COMPILE_OPTION "-std=c++03")
-    set(CMAKE_CXX98_EXTENSION_COMPILE_OPTION "-std=c++03")
-    set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
-    set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=c++11")
-  endif()
+if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
+  set(CMAKE_CXX11_STANDARD_COMPILE_OPTION "-std=c++11")
+  set(CMAKE_CXX11_EXTENSION_COMPILE_OPTION "-std=c++11")
+endif()
 
-  if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
-    if (NOT CMAKE_CXX_COMPILER_FORCED)
-      if (NOT CMAKE_CXX_STANDARD_COMPUTED_DEFAULT)
-        message(FATAL_ERROR "CMAKE_CXX_STANDARD_COMPUTED_DEFAULT should be set for ${CMAKE_CXX_COMPILER_ID} (${CMAKE_CXX_COMPILER}) version ${CMAKE_CXX_COMPILER_VERSION}")
-      endif()
-      set(CMAKE_CXX_STANDARD_DEFAULT ${CMAKE_CXX_STANDARD_COMPUTED_DEFAULT})
+if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
+  if (NOT CMAKE_CXX_COMPILER_FORCED)
+    if (NOT CMAKE_CXX_STANDARD_COMPUTED_DEFAULT)
+      message(FATAL_ERROR "CMAKE_CXX_STANDARD_COMPUTED_DEFAULT should be set for ${CMAKE_CXX_COMPILER_ID} (${CMAKE_CXX_COMPILER}) version ${CMAKE_CXX_COMPILER_VERSION}")
     endif()
+    set(CMAKE_CXX_STANDARD_DEFAULT ${CMAKE_CXX_STANDARD_COMPUTED_DEFAULT})
   endif()
 endif()
 
@@ -55,12 +51,10 @@ macro(cmake_record_cxx_compile_features)
   endmacro()
 
   set(_result 0)
-  if (CMAKE_SYSTEM_NAME STREQUAL Linux)
-    if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
-      _get_solaris_studio_features(${CMAKE_CXX11_STANDARD_COMPILE_OPTION} CMAKE_CXX11_COMPILE_FEATURES)
-      if (_result EQUAL 0)
-        _get_solaris_studio_features("" CMAKE_CXX98_COMPILE_FEATURES)
-      endif()
+  if (NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.13)
+    _get_solaris_studio_features(${CMAKE_CXX11_STANDARD_COMPILE_OPTION} CMAKE_CXX11_COMPILE_FEATURES)
+    if (_result EQUAL 0)
+      _get_solaris_studio_features("" CMAKE_CXX98_COMPILE_FEATURES)
     endif()
   endif()
 endmacro()

Tests/Module/WriteCompilerDetectionHeader/CMakeLists.txt

@@ -25,8 +25,7 @@ if (NOT CMAKE_CXX_COMPILE_FEATURES AND NOT CMAKE_C_COMPILE_FEATURES)
   )
   add_executable(WriteCompilerDetectionHeader "${CMAKE_CURRENT_BINARY_DIR}/dummy.cpp")
 
-  if((UNIX OR NOT CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
-      AND NOT CMAKE_CXX_COMPILER_ID STREQUAL "SunPro")
+  if(UNIX OR NOT CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
     include(CheckCXXSourceCompiles)
     check_cxx_source_compiles("#include \"${CMAKE_CURRENT_BINARY_DIR}/test_compiler_detection.h\"\nint main() { return 0; }\n"
       file_include_works