[cmake] use MINGW builtin rather than custom detection

CMake has had the `MINGW` builtin to describe MinGW targets since at
least version 3.2, so it can safely be used. This variable is also set
for the MSYS2 environments, so CLANGARM64 also correctly sets `MINGW`.

Note that this depends on https://github.com/FEX-Emu/jemalloc/pull/11.

Signed-off-by: crueter <crueter@eden-emu.dev>

CMakeLists.txt

@@ -49,15 +49,11 @@ if (NOT HOSTLIBS_DATA_DIRECTORY)
   set(HOSTLIBS_DATA_DIRECTORY "${CMAKE_INSTALL_FULL_LIBDIR}/fex-emu")
 endif()
 
-string(FIND ${CMAKE_BASE_NAME} mingw CONTAINS_MINGW)
-if (NOT CONTAINS_MINGW EQUAL -1)
-  message (STATUS "Mingw build")
-  set (MINGW_BUILD TRUE)
+if (MINGW)
+  message (STATUS "Building for MinGW")
   set (ENABLE_JEMALLOC TRUE)
   set (ENABLE_JEMALLOC_GLIBC_ALLOC FALSE)
-endif()
-
-if (NOT MINGW_BUILD)
+else ()
   message (STATUS "Clang version ${CMAKE_CXX_COMPILER_VERSION}")
   set (CLANG_MINIMUM_VERSION 13.0)
   if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS ${CLANG_MINIMUM_VERSION})
@@ -88,7 +84,7 @@ if (ENABLE_FEXCORE_PROFILER)
     add_definitions(-DTRACY_NO_SAMPLING=1)
     # This pulls in libbacktrace which allocators in global constructors (before FEX can set up its allocator hooks)
     add_definitions(-DTRACY_NO_CALLSTACK=1)
-    if (MINGW_BUILD)
+    if (MINGW)
       message(FATAL_ERROR "Tracy profiler not supported")
     endif()
   else()
@@ -188,7 +184,7 @@ check_cxx_source_compiles(
   HAS_CLANG_PRESERVE_ALL)
 unset(CMAKE_REQUIRED_FLAGS)
 if (HAS_CLANG_PRESERVE_ALL)
-  if (MINGW_BUILD)
+  if (MINGW)
     message(STATUS "Ignoring broken clang::preserve_all support")
     set(HAS_CLANG_PRESERVE_ALL FALSE)
   else()
@@ -277,7 +273,7 @@ if (ENABLE_JEMALLOC_GLIBC_ALLOC)
   # Required for thunks to work.
   # All host native libraries will use this allocator, while *most* other FEX internal allocations will use the other jemalloc allocator.
   add_subdirectory(External/jemalloc_glibc/)
-elseif (NOT MINGW_BUILD)
+elseif (NOT MINGW)
   message (STATUS
     " jemalloc glibc allocator disabled!\n"
     " This is not a recommended configuration!\n"
@@ -288,7 +284,7 @@ endif()
 if (ENABLE_JEMALLOC)
   # The jemalloc subproject that all FEXCore fextl objects allocate through.
   add_subdirectory(External/jemalloc/)
-elseif (NOT MINGW_BUILD)
+elseif (NOT MINGW)
   message (STATUS
     " jemalloc disabled!\n"
     " This is not a recommended configuration!\n"
@@ -518,7 +514,7 @@ add_subdirectory(FEXHeaderUtils/)
 add_subdirectory(CodeEmitter/)
 add_subdirectory(FEXCore/)
 
-if (_M_ARM_64 AND NOT MINGW_BUILD AND NOT BUILD_STEAM_SUPPORT)
+if (_M_ARM_64 AND NOT MINGW AND NOT BUILD_STEAM_SUPPORT)
   # Binfmt_misc files must be installed prior to Source/ installs
   add_subdirectory(Data/binfmts/)
 endif()

FEXCore/Source/CMakeLists.txt

@@ -9,7 +9,7 @@ set (FEXCORE_BASE_SRCS
   Utils/SpinWaitLock.cpp
   )
 
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   list(APPEND FEXCORE_BASE_SRCS
     Utils/Allocator/64BitAllocator.cpp)
 endif()
@@ -108,7 +108,7 @@ if (ENABLE_VIXL_DISASSEMBLER OR ENABLE_VIXL_SIMULATOR)
   list (APPEND LIBS vixl)
 endif()
 
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   list (APPEND LIBS dl)
 else()
   list (APPEND LIBS synchronization)
@@ -291,7 +291,7 @@ AddObject(${PROJECT_NAME}_object OBJECT)
 AddLibrary(${PROJECT_NAME} STATIC)
 AddLibrary(${PROJECT_NAME}_shared SHARED)
 
-if (NOT MINGW_BUILD AND NOT BUILD_STEAM_SUPPORT)
+if (NOT MINGW AND NOT BUILD_STEAM_SUPPORT)
   install(TARGETS ${PROJECT_NAME}_shared
     LIBRARY
       DESTINATION ${CMAKE_INSTALL_LIBDIR}
@@ -310,7 +310,7 @@ if (ENABLE_JEMALLOC_GLIBC_ALLOC)
   target_link_libraries(JemallocLibs INTERFACE FEX_jemalloc_glibc)
 endif()
 
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   # Dummy project to use for host tools.
   # This overrides use of jemalloc in FEXCore with the normal glibc allocator.
   add_library(JemallocDummy STATIC Utils/AllocatorHooks.cpp)

FEXCore/unittests/CMakeLists.txt

@@ -1,4 +1,4 @@
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   add_subdirectory(Emitter/)
   add_subdirectory(APITests/)
 endif()

Source/CMakeLists.txt

@@ -6,6 +6,6 @@ add_compile_options($<$<COMPILE_LANGUAGE:CXX>:-fno-strict-aliasing>)
 add_subdirectory(Common/)
 add_subdirectory(Tools/)
 
-if (MINGW_BUILD)
+if (MINGW)
   add_subdirectory(Windows/)
 endif()

Source/Common/CMakeLists.txt

@@ -11,7 +11,7 @@ set(SRCS
   VolatileMetadata.cpp
   )
 
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   list (APPEND SRCS
     FEXServerClient.cpp
     FileFormatCheck.cpp)

Source/Tools/CMakeLists.txt

@@ -1,6 +1,6 @@
 add_subdirectory(CommonTools)
 
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   if (BUILD_FEXCONFIG)
     find_package(Qt6 COMPONENTS Qml Quick Widgets QUIET)
     if (NOT Qt6_FOUND)

Source/Tools/CommonTools/CMakeLists.txt

@@ -3,7 +3,7 @@ set(SRCS
   DummyHandlers.cpp
   )
 
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   list(APPEND SRCS
   Linux/Utils/ELFContainer.cpp
   )

Source/Tools/TestHarnessRunner/CMakeLists.txt

@@ -1,7 +1,7 @@
 list(APPEND LIBS FEXCore Common JemallocLibs)
 
 set (SRCS TestHarnessRunner.cpp)
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   list(APPEND SRCS TestHarnessRunner/HostRunner.cpp)
   list(APPEND LIBS LinuxEmulation CommonTools)
 endif()

unittests/32Bit_ASM/CMakeLists.txt

@@ -65,7 +65,7 @@ foreach(ASM_SRC ${ASM_SOURCES})
       )
   endif()
 
-  if (NOT MINGW_BUILD)
+  if (NOT MINGW)
     set (LAUNCH_PROGRAM "${CMAKE_BINARY_DIR}/Bin/TestHarnessRunner")
   else()
     set (LAUNCH_PROGRAM "wine" "${CMAKE_BINARY_DIR}/Bin/TestHarnessRunner.exe")
@@ -102,7 +102,7 @@ foreach(ASM_SRC ${ASM_SOURCES})
     set_property(TEST ${TEST_NAME} APPEND PROPERTY DEPENDS "${OUTPUT_CONFIG_NAME}")
     set_property(TEST ${TEST_NAME} APPEND PROPERTY SKIP_RETURN_CODE 125)
     set_property(TEST ${TEST_NAME} APPEND PROPERTY ENVIRONMENT ${FEX_ARGS_LIST})
-    if (MINGW_BUILD)
+    if (MINGW)
       # Ensure the DOS region can be allocated.
       set_property(TEST ${TEST_NAME} APPEND PROPERTY ENVIRONMENT "WINEPRELOADRESERVE=10000-110000")
     endif()

unittests/ASM/CMakeLists.txt

@@ -67,7 +67,7 @@ foreach(ASM_SRC ${ASM_SOURCES})
       )
   endif()
 
-  if (NOT MINGW_BUILD)
+  if (NOT MINGW)
     set (LAUNCH_PROGRAM "${CMAKE_BINARY_DIR}/Bin/TestHarnessRunner")
   else()
     set (LAUNCH_PROGRAM "wine" "${CMAKE_BINARY_DIR}/Bin/TestHarnessRunner.exe")
@@ -109,7 +109,7 @@ foreach(ASM_SRC ${ASM_SOURCES})
     set_property(TEST ${TEST_NAME} APPEND PROPERTY DEPENDS "${OUTPUT_CONFIG_NAME}")
     set_property(TEST ${TEST_NAME} APPEND PROPERTY SKIP_RETURN_CODE 125)
     set_property(TEST ${TEST_NAME} APPEND PROPERTY ENVIRONMENT ${FEX_ARGS_LIST})
-    if (MINGW_BUILD)
+    if (MINGW)
       # Ensure the DOS region can be allocated.
       set_property(TEST ${TEST_NAME} APPEND PROPERTY ENVIRONMENT "WINEPRELOADRESERVE=10000-110000")
     endif()

unittests/CMakeLists.txt

@@ -1,4 +1,4 @@
-if (NOT MINGW_BUILD)
+if (NOT MINGW)
   add_subdirectory(APITests/)
   add_subdirectory(POSIX/)
   add_subdirectory(gvisor-tests/)