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: [PATCH] cmake: support components in find modules

---
 CMakeLists.txt                 |  6 +++---
 CMakeModules/FindLLVM.cmake    | 18 ++++++++++++++----
 CMakeModules/Findhttplib.cmake | 12 +++++++++++-
 CMakeModules/Findinih.cmake    | 19 +++++++++++++++----
 4 files changed, 43 insertions(+), 12 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0f344ffd9b..7a7faa1c46 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -212,8 +212,8 @@ set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/bin)
 # Enforce the search mode of non-required packages for better and shorter failure messages
 find_package(enet 1.3 MODULE)
 find_package(fmt 9 REQUIRED)
-find_package(inih MODULE)
-find_package(LLVM MODULE)
+find_package(inih 52 MODULE COMPONENTS INIReader)
+find_package(LLVM MODULE COMPONENTS Demangle)
 find_package(lz4 REQUIRED)
 find_package(nlohmann_json 3.8 REQUIRED)
 find_package(Opus 1.3 MODULE)
@@ -246,7 +246,7 @@ endif()
 
 if (ENABLE_WEB_SERVICE)
     find_package(cpp-jwt 1.4 CONFIG)
-    find_package(httplib 0.12 MODULE)
+    find_package(httplib 0.12 MODULE COMPONENTS OpenSSL)
 endif()
 
 if (YUZU_TESTS)
diff --git a/CMakeModules/FindLLVM.cmake b/CMakeModules/FindLLVM.cmake
index 513d9a5365..efbd0ca460 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()
diff --git a/CMakeModules/Findhttplib.cmake b/CMakeModules/Findhttplib.cmake
index 861207eb5c..48967add96 100644
--- a/CMakeModules/Findhttplib.cmake
+++ b/CMakeModules/Findhttplib.cmake
@@ -6,13 +6,23 @@ include(FindPackageHandleStandardArgs)
 
 find_package(httplib QUIET CONFIG)
 if (httplib_CONSIDERED_CONFIGS)
-    find_package_handle_standard_args(httplib CONFIG_MODE)
+    find_package_handle_standard_args(httplib HANDLE_COMPONENTS CONFIG_MODE)
 else()
     find_package(PkgConfig QUIET)
     pkg_search_module(HTTPLIB QUIET IMPORTED_TARGET cpp-httplib)
+    if ("-DCPPHTTPLIB_OPENSSL_SUPPORT" IN_LIST HTTPLIB_CFLAGS_OTHER)
+        set(httplib_OpenSSL_FOUND TRUE)
+    endif()
+    if ("-DCPPHTTPLIB_ZLIB_SUPPORT" IN_LIST HTTPLIB_CFLAGS_OTHER)
+        set(httplib_ZLIB_FOUND TRUE)
+    endif()
+    if ("-DCPPHTTPLIB_BROTLI_SUPPORT" IN_LIST HTTPLIB_CFLAGS_OTHER)
+        set(httplib_Brotli_FOUND TRUE)
+    endif()
     find_package_handle_standard_args(httplib
         REQUIRED_VARS HTTPLIB_INCLUDEDIR
         VERSION_VAR HTTPLIB_VERSION
+        HANDLE_COMPONENTS
     )
 endif()
 
diff --git a/CMakeModules/Findinih.cmake b/CMakeModules/Findinih.cmake
index b8d38dcff7..791befebdc 100644
--- a/CMakeModules/Findinih.cmake
+++ b/CMakeModules/Findinih.cmake
@@ -3,14 +3,25 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 
 find_package(PkgConfig QUIET)
-pkg_search_module(INIREADER QUIET IMPORTED_TARGET INIReader)
+pkg_search_module(INIH QUIET IMPORTED_TARGET inih)
+if (INIReader IN_LIST inih_FIND_COMPONENTS)
+    pkg_search_module(INIREADER QUIET IMPORTED_TARGET INIReader)
+    if (INIREADER_FOUND)
+        set(inih_INIReader_FOUND TRUE)
+    endif()
+endif()
 
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(inih
-    REQUIRED_VARS INIREADER_LINK_LIBRARIES
-    VERSION_VAR INIREADER_VERSION
+    REQUIRED_VARS INIH_LINK_LIBRARIES
+    VERSION_VAR INIH_VERSION
+    HANDLE_COMPONENTS
 )
 
-if (inih_FOUND AND NOT TARGET inih::INIReader)
+if (inih_FOUND AND NOT TARGET inih::inih)
+    add_library(inih::inih ALIAS PkgConfig::INIH)
+endif()
+
+if (inih_FOUND AND inih_INIReader_FOUND AND NOT TARGET inih::INIReader)
     add_library(inih::INIReader ALIAS PkgConfig::INIREADER)
 endif()