Initial release

engine/vendor/vst3sdk/cmake/modules/SMTG_DetectPlatform.cmake

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+
+# Detect the platform which cmake builds for.
+#
+# Needed for check_language(CXX)
+include(CheckLanguage)
+# The detected platform var is stored within the internal cache of cmake in order to make it
+# available globally.
+set(SMTG_PLATFORM_DETECTION_COMMENT "The platform which was detected by SMTG")
+
+#------------------------------------------------------------------------
+# Detect the Platform
+#
+macro(smtg_detect_platform)
+    if(APPLE)
+        set(SMTG_MAC TRUE CACHE INTERNAL ${SMTG_PLATFORM_DETECTION_COMMENT})
+    elseif(UNIX OR ANDROID_PLATFORM)
+        set(SMTG_LINUX TRUE CACHE INTERNAL ${SMTG_PLATFORM_DETECTION_COMMENT})
+    elseif(WIN32)
+        set(SMTG_WIN TRUE CACHE INTERNAL ${SMTG_PLATFORM_DETECTION_COMMENT})
+    endif(APPLE)
+endmacro(smtg_detect_platform)
+
+#------------------------------------------------------------------------
+# Check if c++ compiler is available
+# Handling cmake issue: https://gitlab.kitware.com/cmake/cmake/-/issues/20890
+function(smtg_check_language_cxx)
+    message(STATUS "[SMTG] Check C++ compiler")
+    check_language(CXX)
+    if(NOT CMAKE_CXX_COMPILER)
+        if(SMTG_MAC)
+            execute_process(COMMAND xcode-select -p OUTPUT_VARIABLE _xcode ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
+            cmake_path(SET _xcode NORMALIZE "${_xcode}/../..")
+            string(FIND "${_xcode}"  " " _pos)
+            if(_pos GREATER "-1")
+                message(FATAL_ERROR "[SMTG] Spaces in Xcode path are not supported by cmake: \"${_xcode}\"" )
+            endif()
+        endif()
+    endif()
+endfunction()
+
+#------------------------------------------------------------------------
+# Detect the default Xcode Version
+#
+macro(smtg_detect_xcode_version)
+    if(SMTG_MAC)
+        # Check if CXX compiler is available
+        smtg_check_language_cxx()
+        if(NOT DEFINED ENV{XCODE_VERSION})
+            # find out Xcode version if not set by cmake
+            execute_process(COMMAND xcodebuild -version OUTPUT_VARIABLE XCODE_VERSION ERROR_QUIET OUTPUT_STRIP_TRAILING_WHITESPACE)
+            string(REGEX MATCH "Xcode [0-9\\.]+" XCODE_VERSION "${XCODE_VERSION}")
+            string(REGEX REPLACE "Xcode ([0-9\\.]+)" "\\1" XCODE_VERSION "${XCODE_VERSION}")
+        endif()
+        if(XCODE_VERSION VERSION_LESS "9")
+            message(FATAL_ERROR "[SMTG] XCode 9 or newer is required")
+        endif()
+        message(STATUS "[SMTG] Building with Xcode version: ${XCODE_VERSION}")
+        if(NOT DEFINED ENV{SDKROOT})
+            execute_process(COMMAND xcrun --sdk macosx --show-sdk-path OUTPUT_VARIABLE CMAKE_OSX_SYSROOT OUTPUT_STRIP_TRAILING_WHITESPACE)
+        endif()
+    endif(SMTG_MAC)
+endmacro(smtg_detect_xcode_version)