[cmake] rename CORE_HOST_IS_TARGET to HOST_CAN_EXECUTE_TARGET

We are now in a time where some platforms/archs can execute "foreign" (x86_64)
arch code locally (Apple via Rosetta, Windows on arm).
Rename CORE_HOST_IS_TARGET to HOST_CAN_EXECUTE_TARGET to allow platforms ArchSetup
to set and therefore execute tests if desired.

4 files changed, 16 insertions, 6 deletions

diff --git a/CMakeLists.txt b/CMakeLists.txt
index e5824f0d20..84e58467f7 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -392,7 +392,7 @@ else()
 endif()
 
 # testing
-if(CORE_HOST_IS_TARGET AND ENABLE_TESTING)
+if(HOST_CAN_EXECUTE_TARGET AND ENABLE_TESTING)
   find_package(Gtest)
 
   copy_files_from_filelist_to_buildtree(${CMAKE_SOURCE_DIR}/cmake/installdata/test-reference-data.txt NO_INSTALL)
diff --git a/cmake/modules/FindTexturePacker.cmake b/cmake/modules/FindTexturePacker.cmake
index 173b74d0ff..ce6311ec3b 100644
--- a/cmake/modules/FindTexturePacker.cmake
+++ b/cmake/modules/FindTexturePacker.cmake
@@ -57,9 +57,9 @@ if(NOT TARGET TexturePacker::TexturePacker::Executable)
       set(INTERNAL_TEXTUREPACKER_INSTALLABLE TRUE)
     endif()
 
-    # Use it during build if build architecture is same as host
-    # (not cross-compiling) and TEXTUREPACKER_EXECUTABLE is not found
-    if(CORE_HOST_IS_TARGET AND NOT TEXTUREPACKER_EXECUTABLE)
+    # Use it during build if build architecture can be executed on host
+    # and TEXTUREPACKER_EXECUTABLE is not found
+    if(HOST_CAN_EXECUTE_TARGET AND NOT TEXTUREPACKER_EXECUTABLE)
       set(INTERNAL_TEXTUREPACKER_EXECUTABLE TRUE)
     endif()
 
diff --git a/cmake/scripts/common/ArchSetup.cmake b/cmake/scripts/common/ArchSetup.cmake
index 52f6276e79..97a09b4433 100644
--- a/cmake/scripts/common/ArchSetup.cmake
+++ b/cmake/scripts/common/ArchSetup.cmake
@@ -59,9 +59,13 @@ endif()
 # this variable is set if we can execute build artefacts on the host system (for example unit tests).
 if(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL CMAKE_SYSTEM_PROCESSOR AND
    CMAKE_HOST_SYSTEM_NAME STREQUAL CMAKE_SYSTEM_NAME)
-  set(CORE_HOST_IS_TARGET TRUE)
+  if(NOT HOST_CAN_EXECUTE_TARGET)
+    set(HOST_CAN_EXECUTE_TARGET TRUE)
+  endif()
 else()
-  set(CORE_HOST_IS_TARGET FALSE)
+  if(NOT HOST_CAN_EXECUTE_TARGET)
+    set(HOST_CAN_EXECUTE_TARGET FALSE)
+  endif()
 endif()
 
 # system specific arch setup
diff --git a/cmake/scripts/osx/ArchSetup.cmake b/cmake/scripts/osx/ArchSetup.cmake
index dd2b9f2936..ec72737894 100644
--- a/cmake/scripts/osx/ArchSetup.cmake
+++ b/cmake/scripts/osx/ArchSetup.cmake
@@ -23,6 +23,12 @@ else()
   endif()
 endif()
 
+# m1 macs can execute x86_64 code via rosetta
+if(CMAKE_HOST_SYSTEM_PROCESSOR STREQUAL "arm64" AND
+   CMAKE_HOST_SYSTEM_NAME STREQUAL "Darwin")
+  set(HOST_CAN_EXECUTE_TARGET TRUE)
+endif()
+
 if(NOT TARBALL_DIR)
   set(TARBALL_DIR "/Users/Shared/xbmc-depends/xbmc-tarballs")
 endif()