Xcode: Completely disable code signing for compiler id detection

Issue: #17870

Help/manual/cmake-toolchains.7.rst

@@ -564,6 +564,8 @@ code signing.  If the :generator:`Xcode` generator is being used and
 code signing is required or desired, the developmemt team ID can be
 specified via the ``CMAKE_XCODE_ATTRIBUTE_DEVELOPMENT_TEAM`` CMake variable.
 This team ID will then be included in the generated Xcode project.
+By default, CMake avoids the need for code signing during the internal
+configuration phase (i.e compiler ID and feature detection).
 
 .. _`Switching Between Device and Simulator`:
 

Modules/CMakeDetermineCompilerId.cmake

@@ -358,18 +358,6 @@ Id flags: ${testflags} ${CMAKE_${lang}_COMPILER_ID_FLAGS_ALWAYS}
     else()
       set(id_sdkroot "")
     endif()
-    if(CMAKE_XCODE_ATTRIBUTE_DEVELOPMENT_TEAM)
-      set(id_development_team
-        "DEVELOPMENT_TEAM = \"${CMAKE_XCODE_ATTRIBUTE_DEVELOPMENT_TEAM}\";")
-    else()
-      set(id_development_team "")
-    endif()
-    if(DEFINED CMAKE_XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY)
-      set(id_code_sign_identity
-        "CODE_SIGN_IDENTITY = \"${CMAKE_XCODE_ATTRIBUTE_CODE_SIGN_IDENTITY}\";")
-    else()
-      set(id_code_sign_identity "CODE_SIGN_IDENTITY = \"\";")
-    endif()
     configure_file(${CMAKE_ROOT}/Modules/CompilerId/Xcode-3.pbxproj.in
       ${id_dir}/CompilerId${lang}.xcodeproj/project.pbxproj @ONLY)
     unset(_ENV_MACOSX_DEPLOYMENT_TARGET)

Modules/CompilerId/Xcode-3.pbxproj.in

@@ -72,8 +72,7 @@
 		1DEB928608733DD80010E9CD = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				@id_development_team@
-				@id_code_sign_identity@
+				CODE_SIGN_IDENTITY = "";
 				PRODUCT_NAME = CompilerId@id_lang@;
 			};
 			name = Debug;