macos: drop Intel Mac support, arm64 only

Delete cef_version_mac.h (CEF 66 x86_64 header, never updated for 146).
CMakeLists.txt, common.py, and build_distrib.py all now unconditionally
use cef_version_macarm64.h and the cef*_macarm64 CEF directory on macOS.
The -mmacosx-version-min is hardcoded to 11.0 (ARM64 minimum).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: linesight

CMakeLists.txt

@@ -41,11 +41,7 @@ if(NOT CEF_ROOT)
     if(WIN32)
         set(_cef_glob_pat "${CMAKE_SOURCE_DIR}/build/cef*_win64")
     elseif(APPLE)
-        if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64")
-            set(_cef_glob_pat "${CMAKE_SOURCE_DIR}/build/cef*_macarm64")
-        else()
-            set(_cef_glob_pat "${CMAKE_SOURCE_DIR}/build/cef*_mac64")
-        endif()
+        set(_cef_glob_pat "${CMAKE_SOURCE_DIR}/build/cef*_macarm64")
     else()
         set(_cef_glob_pat "${CMAKE_SOURCE_DIR}/build/cef*_linux64")
     endif()
@@ -75,11 +71,7 @@ set(PYX_STAGE_DIR "${CMAKE_CURRENT_BINARY_DIR}/pyx_stage")
 if(WIN32)
     set(_cef_ver_header "${SRC_DIR}/version/cef_version_win.h")
 elseif(APPLE)
-    if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64")
-        set(_cef_ver_header "${SRC_DIR}/version/cef_version_macarm64.h")
-    else()
-        set(_cef_ver_header "${SRC_DIR}/version/cef_version_mac.h")
-    endif()
+    set(_cef_ver_header "${SRC_DIR}/version/cef_version_macarm64.h")
 else()
     set(_cef_ver_header "${SRC_DIR}/version/cef_version_linux.h")
 endif()
@@ -218,13 +210,8 @@ elseif(APPLE)
         BROWSER_PROCESS
         CEFPYTHON_API_H_FILE="cefpython_api_fixed.h"
     )
-    if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64")
-        set(_macos_ver_min 11.0)
-    else()
-        set(_macos_ver_min 10.9)
-    endif()
     target_link_options(${MODULE_NAME} PRIVATE
-        -mmacosx-version-min=${_macos_ver_min}
+        -mmacosx-version-min=11.0
         -Wl,-search_paths_first -Wl,-dead_strip
         "-F${CEF_ROOT}/bin" "-framework" "Chromium Embedded Framework"
         "-Wl,-rpath,@loader_path/"

src/version/cef_version_mac.h

@@ -116,7 +116,7 @@ def _read_version():
     if sys.platform == "win32":
         name = "cef_version_win.h"
     elif sys.platform == "darwin":
-        name = "cef_version_mac.h"
+        name = "cef_version_macarm64.h"
     else:
         name = "cef_version_linux.h"
     header = os.path.join("src", "version", name)

tools/build_distrib.py

@@ -51,12 +51,8 @@
     OS_POSTFIX2 = "win32" if ARCH32 else "win64"
     CEF_POSTFIX2 = "windows32" if ARCH32 else "windows64"
 elif OS_POSTFIX == "mac":
-    if platform.machine() == "arm64":
-        OS_POSTFIX2 = "macarm64"
-        CEF_POSTFIX2 = "macosarm64"
-    else:
-        OS_POSTFIX2 = "mac32" if ARCH32 else "mac64"
-        CEF_POSTFIX2 = "macosx32" if ARCH32 else "macosx64"
+    OS_POSTFIX2 = "macarm64"
+    CEF_POSTFIX2 = "macosarm64"
 elif OS_POSTFIX == "linux":
     OS_POSTFIX2 = "linux32" if ARCH32 else "linux64"
     CEF_POSTFIX2 = "linux32" if ARCH32 else "linux64"
@@ -474,7 +470,7 @@ def get_version_from_command_line_args(caller_script, ignore_error=False):
 
 def get_cefpython_version():
     """Get CEF version from the 'src/version/' directory."""
-    if OS_POSTFIX == "mac" and platform.machine() == "arm64":
+    if OS_POSTFIX == "mac":
         header_name = "cef_version_macarm64.h"
     else:
         header_name = "cef_version_" + OS_POSTFIX + ".h"