From 7b8a5413add02004d778252c0b67bf921c1fb7d8 Mon Sep 17 00:00:00 2001
From: Alexandre Bouvier <contact@amb.tf>
Date: Fri, 24 Feb 2023 23:45:38 +0100
Subject: cmake: support components in find modules

---
 CMakeModules/FindLLVM.cmake | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

(limited to 'CMakeModules/FindLLVM.cmake')

diff --git a/CMakeModules/FindLLVM.cmake b/CMakeModules/FindLLVM.cmake
index 513d9a536..efbd0ca46 100644
--- a/CMakeModules/FindLLVM.cmake
+++ b/CMakeModules/FindLLVM.cmake
@@ -2,15 +2,25 @@
 #
 # SPDX-License-Identifier: GPL-3.0-or-later
 
-find_package(LLVM QUIET CONFIG)
+find_package(LLVM QUIET COMPONENTS CONFIG)
+if (LLVM_FOUND)
+    separate_arguments(LLVM_DEFINITIONS)
+    if (LLVMDemangle IN_LIST LLVM_AVAILABLE_LIBS)
+        set(LLVM_Demangle_FOUND TRUE)
+    endif()
+endif()
 
 include(FindPackageHandleStandardArgs)
-find_package_handle_standard_args(LLVM CONFIG_MODE)
+find_package_handle_standard_args(LLVM HANDLE_COMPONENTS CONFIG_MODE)
 
-if (LLVM_FOUND AND NOT TARGET LLVM::Demangle)
+if (LLVM_FOUND AND LLVM_Demangle_FOUND AND NOT TARGET LLVM::Demangle)
     add_library(LLVM::Demangle INTERFACE IMPORTED)
-    llvm_map_components_to_libnames(LLVM_LIBRARIES demangle)
     target_compile_definitions(LLVM::Demangle INTERFACE ${LLVM_DEFINITIONS})
     target_include_directories(LLVM::Demangle INTERFACE ${LLVM_INCLUDE_DIRS})
+    # prefer shared LLVM: https://github.com/llvm/llvm-project/issues/34593
+    # but use ugly hack because llvm_config doesn't support interface library
+    add_library(_dummy_lib SHARED EXCLUDE_FROM_ALL src/yuzu/main.cpp)
+    llvm_config(_dummy_lib USE_SHARED demangle)
+    get_target_property(LLVM_LIBRARIES _dummy_lib LINK_LIBRARIES)
     target_link_libraries(LLVM::Demangle INTERFACE ${LLVM_LIBRARIES})
 endif()
-- 
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