From b73857561fe3ffb8ee0ce3057706c51faabf2e4d Mon Sep 17 00:00:00 2001
From: Thomas Bernard <thomas@famillebernardgouriou.fr>
Date: Fri, 17 Sep 2021 00:24:42 +0200
Subject: Clang: embed windows manifests with GNU interface

Solves: #22611
---
 Modules/Platform/Windows-Clang.cmake    |  6 ++++--
 Source/cmCommonTargetGenerator.cxx      | 13 +++++++++----
 Tests/MSManifest/Subdir/CMakeLists.txt  |  4 ++++
 Tests/MSManifest/Subdir2/CMakeLists.txt |  2 +-
 4 files changed, 18 insertions(+), 7 deletions(-)

diff --git a/Modules/Platform/Windows-Clang.cmake b/Modules/Platform/Windows-Clang.cmake
index 373be76..1c32018 100644
--- a/Modules/Platform/Windows-Clang.cmake
+++ b/Modules/Platform/Windows-Clang.cmake
@@ -38,6 +38,8 @@ macro(__windows_compiler_clang_gnu lang)
   set(CMAKE_${lang}_LINKER_WRAPPER_FLAG "-Xlinker" " ")
   set(CMAKE_${lang}_LINKER_WRAPPER_FLAG_SEP)
 
+  set(CMAKE_${lang}_LINKER_MANIFEST_FLAG " -Xlinker /MANIFESTINPUT:")
+
   if("${CMAKE_${lang}_SIMULATE_VERSION}" MATCHES "^([0-9]+)\\.([0-9]+)")
     math(EXPR MSVC_VERSION "${CMAKE_MATCH_1}*100 + ${CMAKE_MATCH_2}")
   endif()
@@ -66,10 +68,10 @@ macro(__windows_compiler_clang_gnu lang)
   set(CMAKE_${lang}_ARCHIVE_APPEND "<CMAKE_AR> q <TARGET> <LINK_FLAGS> <OBJECTS>")
   set(CMAKE_${lang}_ARCHIVE_FINISH "<CMAKE_RANLIB> <TARGET>")
   set(CMAKE_${lang}_CREATE_SHARED_LIBRARY
-    "<CMAKE_${lang}_COMPILER> -fuse-ld=lld-link -nostartfiles -nostdlib <CMAKE_SHARED_LIBRARY_${lang}_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS> -o <TARGET> ${CMAKE_GNULD_IMAGE_VERSION} -Xlinker /implib:<TARGET_IMPLIB> -Xlinker /pdb:<TARGET_PDB> -Xlinker /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR> <OBJECTS> <LINK_LIBRARIES>")
+    "<CMAKE_${lang}_COMPILER> -fuse-ld=lld-link -nostartfiles -nostdlib <CMAKE_SHARED_LIBRARY_${lang}_FLAGS> <LANGUAGE_COMPILE_FLAGS> <LINK_FLAGS> <CMAKE_SHARED_LIBRARY_CREATE_${lang}_FLAGS> -o <TARGET> ${CMAKE_GNULD_IMAGE_VERSION} -Xlinker /MANIFEST:EMBED -Xlinker /implib:<TARGET_IMPLIB> -Xlinker /pdb:<TARGET_PDB> -Xlinker /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR> <OBJECTS> <LINK_LIBRARIES> <MANIFESTS>")
   set(CMAKE_${lang}_CREATE_SHARED_MODULE ${CMAKE_${lang}_CREATE_SHARED_LIBRARY})
   set(CMAKE_${lang}_LINK_EXECUTABLE
-    "<CMAKE_${lang}_COMPILER> -fuse-ld=lld-link -nostartfiles -nostdlib <FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> -Xlinker /implib:<TARGET_IMPLIB> -Xlinker /pdb:<TARGET_PDB> -Xlinker /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR> ${CMAKE_GNULD_IMAGE_VERSION} <LINK_LIBRARIES>")
+    "<CMAKE_${lang}_COMPILER> -fuse-ld=lld-link -nostartfiles -nostdlib <FLAGS> <CMAKE_${lang}_LINK_FLAGS> <LINK_FLAGS> <OBJECTS> -o <TARGET> -Xlinker /MANIFEST:EMBED -Xlinker /implib:<TARGET_IMPLIB> -Xlinker /pdb:<TARGET_PDB> -Xlinker /version:<TARGET_VERSION_MAJOR>.<TARGET_VERSION_MINOR> ${CMAKE_GNULD_IMAGE_VERSION} <LINK_LIBRARIES> <MANIFESTS>")
 
   set(CMAKE_${lang}_CREATE_WIN32_EXE "-Xlinker /subsystem:windows")
   set(CMAKE_${lang}_CREATE_CONSOLE_EXE "-Xlinker /subsystem:console")
diff --git a/Source/cmCommonTargetGenerator.cxx b/Source/cmCommonTargetGenerator.cxx
index 59e4141..4e7f50d 100644
--- a/Source/cmCommonTargetGenerator.cxx
+++ b/Source/cmCommonTargetGenerator.cxx
@@ -240,11 +240,16 @@ std::string cmCommonTargetGenerator::GetManifests(const std::string& config)
 
   std::vector<std::string> manifests;
   manifests.reserve(manifest_srcs.size());
+
+  std::string lang = this->GeneratorTarget->GetLinkerLanguage(config);
+  std::string const& manifestFlag =
+    this->Makefile->GetDefinition("CMAKE_" + lang + "_LINKER_MANIFEST_FLAG");
   for (cmSourceFile const* manifest_src : manifest_srcs) {
-    manifests.push_back(this->LocalCommonGenerator->ConvertToOutputFormat(
-      this->LocalCommonGenerator->MaybeRelativeToWorkDir(
-        manifest_src->GetFullPath()),
-      cmOutputConverter::SHELL));
+    manifests.push_back(manifestFlag +
+                        this->LocalCommonGenerator->ConvertToOutputFormat(
+                          this->LocalCommonGenerator->MaybeRelativeToWorkDir(
+                            manifest_src->GetFullPath()),
+                          cmOutputConverter::SHELL));
   }
 
   return cmJoin(manifests, " ");
diff --git a/Tests/MSManifest/Subdir/CMakeLists.txt b/Tests/MSManifest/Subdir/CMakeLists.txt
index 8664572..3b4fccc 100644
--- a/Tests/MSManifest/Subdir/CMakeLists.txt
+++ b/Tests/MSManifest/Subdir/CMakeLists.txt
@@ -7,4 +7,8 @@ if(MSVC AND NOT MSVC_VERSION LESS 1400)
     -P ${CMAKE_CURRENT_SOURCE_DIR}/check.cmake)
   add_executable(MSManifestNone main.c)
   set_property(TARGET MSManifestNone PROPERTY LINK_FLAGS "/MANIFEST:NO")
+elseif(WIN32 AND CMAKE_C_COMPILER_ID MATCHES "Clang")
+  add_test(NAME MSManifest.Single COMMAND
+    ${CMAKE_COMMAND} -Dexe=$<TARGET_FILE:MSManifest>
+    -P ${CMAKE_CURRENT_SOURCE_DIR}/check.cmake)
 endif()
diff --git a/Tests/MSManifest/Subdir2/CMakeLists.txt b/Tests/MSManifest/Subdir2/CMakeLists.txt
index 19d8de7..0d960ad 100644
--- a/Tests/MSManifest/Subdir2/CMakeLists.txt
+++ b/Tests/MSManifest/Subdir2/CMakeLists.txt
@@ -6,7 +6,7 @@ add_executable(MSMultipleManifest main.c
  ${CMAKE_CURRENT_BINARY_DIR}/test_manifest2.manifest
  ${CMAKE_CURRENT_BINARY_DIR}/test_manifest3.manifest)
 
-if(MSVC AND NOT MSVC_VERSION LESS 1400)
+if((MSVC AND NOT MSVC_VERSION LESS 1400) OR (WIN32 AND CMAKE_C_COMPILER_ID MATCHES "Clang") )
   add_test(NAME MSManifest.Multiple COMMAND
     ${CMAKE_COMMAND} -Dexe=$<TARGET_FILE:MSMultipleManifest>
     -P ${CMAKE_CURRENT_SOURCE_DIR}/check.cmake)
-- 
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