macOS: GNU toolchain: ensure framework, marked as SYSTEM, can be linked

Fixes: #25263

Source/cmLinkLineComputer.cxx

@@ -192,24 +192,16 @@ std::string cmLinkLineComputer::ComputeRPath(cmComputeLinkInformation& cli)
 }
 
 std::string cmLinkLineComputer::ComputeFrameworkPath(
-  cmComputeLinkInformation& cli, cmValue fwSearchFlag, cmValue sysFwSearchFlag)
+  cmComputeLinkInformation& cli, cmValue fwSearchFlag)
 {
-  if (!fwSearchFlag && !sysFwSearchFlag) {
+  if (!fwSearchFlag) {
     return std::string{};
   }
 
   std::string frameworkPath;
-  auto const& fwDirs = cli.GetFrameworkPaths();
-  for (auto const& fd : fwDirs) {
-    if (sysFwSearchFlag &&
-        cli.GetTarget()->IsSystemIncludeDirectory(fd, cli.GetConfig(),
-                                                  cli.GetLinkLanguage())) {
-      frameworkPath += sysFwSearchFlag;
-    } else {
-      frameworkPath += fwSearchFlag;
-    }
-    frameworkPath += this->ConvertToOutputFormat(fd);
-    frameworkPath += " ";
+  for (auto const& fd : cli.GetFrameworkPaths()) {
+    frameworkPath +=
+      cmStrCat(fwSearchFlag, this->ConvertToOutputFormat(fd), ' ');
   }
   return frameworkPath;
 }

Source/cmLinkLineComputer.h

@@ -44,8 +44,7 @@ public:
                        std::vector<BT<std::string>>& linkPath);
 
   std::string ComputeFrameworkPath(cmComputeLinkInformation& cli,
-                                   cmValue fwSearchFlag,
-                                   cmValue sysFwSearchFlag);
+                                   cmValue fwSearchFlag);
 
   std::string ComputeLinkLibraries(cmComputeLinkInformation& cli,
                                    std::string const& stdLibString);

Source/cmLocalGenerator.cxx

@@ -1850,11 +1850,8 @@ void cmLocalGenerator::OutputLinkLibraries(
   // Append the framework search path flags.
   cmValue fwSearchFlag = this->Makefile->GetDefinition(
     cmStrCat("CMAKE_", linkLanguage, "_FRAMEWORK_SEARCH_FLAG"));
-  cmValue sysFwSearchFlag = this->Makefile->GetDefinition(
-    cmStrCat("CMAKE_", linkLanguage, "_SYSTEM_FRAMEWORK_SEARCH_FLAG"));
 
-  frameworkPath =
-    linkLineComputer->ComputeFrameworkPath(cli, fwSearchFlag, sysFwSearchFlag);
+  frameworkPath = linkLineComputer->ComputeFrameworkPath(cli, fwSearchFlag);
   linkLineComputer->ComputeLinkPath(cli, libPathFlag, libPathTerminator,
                                     linkPath);
   linkLineComputer->ComputeLinkLibraries(cli, stdLibString, linkLibraries);

Tests/RunCMake/CMakeLists.txt

@@ -707,10 +707,11 @@ if(XCODE_VERSION)
   set_property(TEST RunCMake.XcodeProject PROPERTY TIMEOUT ${CMake_TEST_XcodeProject_TIMEOUT})
 endif()
 
-if(CMAKE_C_COMPILER_ID STREQUAL "AppleClang"
+if((CMAKE_C_COMPILER_ID STREQUAL "AppleClang"
     AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 6.0)
-  add_RunCMake_test(Framework)
-  if(NOT DEFINED CMake_TEST_XcFramework)
+  OR (APPLE AND CMAKE_C_COMPILER_ID STREQUAL "GNU" AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 5.0))
+  add_RunCMake_test(Framework -DCMAKE_C_COMPILER_ID=${CMAKE_C_COMPILER_ID})
+  if(CMAKE_C_COMPILER_ID STREQUAL "AppleClang" AND NOT DEFINED CMake_TEST_XcFramework)
     set(CMake_TEST_XcFramework ON)
   endif()
   if(CMake_TEST_XcFramework AND NOT CMAKE_C_COMPILER_VERSION VERSION_LESS 11.0)

Tests/RunCMake/FileAPI/codemodel-v2-data/targets/apple_exe_framework.json

@@ -34,7 +34,7 @@
         "lto": null,
         "commandFragments": [
             {
-                "fragment": "-iframework .+/framework(/(Debug|Release|RelWithDebInfo|MinSizeRel))?\"? -iframework /usr/Frameworks$",
+                "fragment": "-F.+/framework(/(Debug|Release|RelWithDebInfo|MinSizeRel))?\"? -F/usr/Frameworks$",
                 "role": "frameworkPath",
                 "backtrace": null
             },

Tests/RunCMake/Framework/FrameworkSystemIncludeTest.cmake

@@ -8,7 +8,7 @@ set_target_properties(Example::Example PROPERTIES
 )
 
 add_library(testcase FrameworkSystemIncludeTest.c)
-target_compile_options(testcase PRIVATE "-Werror=#pragma-messages")
+target_compile_options(testcase PRIVATE "$<IF:$<C_COMPILER_ID:GNU>,-Werror,-Werror=#pragma-messages>")
 target_link_libraries(testcase PRIVATE Example::Example)
 
 
@@ -20,7 +20,7 @@ set_target_properties(Example::Example2 PROPERTIES
 )
 
 add_library(testcase2 FrameworkSystemIncludeTest.c)
-target_compile_options(testcase2 PRIVATE "-Werror=#pragma-messages")
+target_compile_options(testcase2 PRIVATE "$<IF:$<C_COMPILER_ID:GNU>,-Werror,-Werror=#pragma-messages>")
 target_link_libraries(testcase2 PRIVATE Example::Example2)
 
 
@@ -32,5 +32,5 @@ set_target_properties(Example::Example3 PROPERTIES
 )
 
 add_library(testcase3 FrameworkSystemIncludeTest.c)
-target_compile_options(testcase3 PRIVATE "-Werror=#pragma-messages")
+target_compile_options(testcase3 PRIVATE "$<IF:$<C_COMPILER_ID:GNU>,-Werror,-Werror=#pragma-messages>")
 target_link_libraries(testcase3 PRIVATE Example::Example3)

Tests/RunCMake/Framework/RunCMakeTest.cmake

@@ -15,8 +15,10 @@ function(framework_layout_test Name Toolchain Type)
   run_cmake_command(${Name} ${CMAKE_COMMAND} --build .)
 endfunction()
 
-framework_layout_test(iOSFrameworkLayout-build ios SHARED)
-framework_layout_test(iOSFrameworkLayout-build ios STATIC)
+if (NOT CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  framework_layout_test(iOSFrameworkLayout-build ios SHARED)
+  framework_layout_test(iOSFrameworkLayout-build ios STATIC)
+endif()
 framework_layout_test(OSXFrameworkLayout-build osx SHARED)
 framework_layout_test(OSXFrameworkLayout-build osx STATIC)
 
@@ -36,13 +38,17 @@ function(framework_type_test Toolchain Type UseProperty)
   run_cmake_command(FrameworkType${Type}-build ${CMAKE_COMMAND} --build .)
 endfunction()
 
-framework_type_test(ios SHARED NO)
-framework_type_test(ios STATIC NO)
+if (NOT CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  framework_type_test(ios SHARED NO)
+  framework_type_test(ios STATIC NO)
+endif()
 framework_type_test(osx SHARED NO)
 framework_type_test(osx STATIC NO)
 
-framework_type_test(ios SHARED YES)
-framework_type_test(ios STATIC YES)
+if (NOT CMAKE_C_COMPILER_ID STREQUAL "GNU")
+  framework_type_test(ios SHARED YES)
+  framework_type_test(ios STATIC YES)
+endif()
 framework_type_test(osx SHARED YES)
 framework_type_test(osx STATIC YES)