From 064625ef58d4166b4983119f5389118113505a84 Mon Sep 17 00:00:00 2001
From: Andrea Pappacoda <andrea@pappacoda.it>
Date: Thu, 28 Jul 2022 16:44:52 +0200
Subject: build: simplify find modules

With this patch I've deleted a few find modules that are now unused
since the vcpkg transition, as the CMake code now forces CONFIG mode for
Catch2, fmt and nlohmann_json.

I've then simplified the lz4, opus, and zstd modules by exclusively
using pkg-config. They were using it already, but were ignoring the
result. Also, I believe that manually looking for libraries was required
for Conan to work, and it is thus not needed anymore.

Lastly, I believe that there is no platform that ships these system libs
without pkg-config/pkgconf, so requiring it should be fine.
---
 externals/find-modules/Findzstd.cmake | 60 +++++++----------------------------
 1 file changed, 11 insertions(+), 49 deletions(-)

(limited to 'externals/find-modules/Findzstd.cmake')

diff --git a/externals/find-modules/Findzstd.cmake b/externals/find-modules/Findzstd.cmake
index f0c56f499..f4031eb70 100644
--- a/externals/find-modules/Findzstd.cmake
+++ b/externals/find-modules/Findzstd.cmake
@@ -1,57 +1,19 @@
-# SPDX-FileCopyrightText: 2020 yuzu Emulator Project
+# SPDX-FileCopyrightText: 2022 yuzu Emulator Project
 # SPDX-License-Identifier: GPL-2.0-or-later
 
-find_package(PkgConfig QUIET)
-pkg_check_modules(PC_zstd QUIET libzstd)
+find_package(PkgConfig)
 
-find_path(zstd_INCLUDE_DIR
-  NAMES zstd.h
-  PATHS ${PC_zstd_INCLUDE_DIRS}
-)
-find_library(zstd_LIBRARY
-  NAMES zstd
-  PATHS ${PC_zstd_LIBRARY_DIRS}
-)
-
-if(zstd_INCLUDE_DIR)
-  file(STRINGS "${zstd_INCLUDE_DIR}/zstd.h" _zstd_version_lines
-    REGEX "#define[ \t]+ZSTD_VERSION_(MAJOR|MINOR|RELEASE)")
-  string(REGEX REPLACE ".*ZSTD_VERSION_MAJOR *\([0-9]*\).*" "\\1" _zstd_version_major "${_zstd_version_lines}")
-  string(REGEX REPLACE ".*ZSTD_VERSION_MINOR *\([0-9]*\).*" "\\1" _zstd_version_minor "${_zstd_version_lines}")
-  string(REGEX REPLACE ".*ZSTD_VERSION_RELEASE *\([0-9]*\).*" "\\1" _zstd_version_release "${_zstd_version_lines}")
-  set(zstd_VERSION "${_zstd_version_major}.${_zstd_version_minor}.${_zstd_version_release}")
-  unset(_zstd_version_major)
-  unset(_zstd_version_minor)
-  unset(_zstd_version_release)
-  unset(_zstd_version_lines)
+if (PKG_CONFIG_FOUND)
+    pkg_search_module(libzstd IMPORTED_TARGET GLOBAL libzstd)
+    if (libzstd_FOUND)
+        add_library(zstd::zstd ALIAS PkgConfig::libzstd)
+    endif()
 endif()
 
 include(FindPackageHandleStandardArgs)
 find_package_handle_standard_args(zstd
-  FOUND_VAR zstd_FOUND
-  REQUIRED_VARS
-    zstd_LIBRARY
-    zstd_INCLUDE_DIR
-    zstd_VERSION
-  VERSION_VAR zstd_VERSION
-)
-
-if(zstd_FOUND)
-  set(zstd_LIBRARIES ${zstd_LIBRARY})
-  set(zstd_INCLUDE_DIRS ${zstd_INCLUDE_DIR})
-  set(zstd_DEFINITIONS ${PC_zstd_CFLAGS_OTHER})
-endif()
-
-if(zstd_FOUND AND NOT TARGET zstd::zstd)
-  add_library(zstd::zstd UNKNOWN IMPORTED)
-  set_target_properties(zstd::zstd PROPERTIES
-    IMPORTED_LOCATION "${zstd_LIBRARY}"
-    INTERFACE_COMPILE_OPTIONS "${PC_zstd_CFLAGS_OTHER}"
-    INTERFACE_INCLUDE_DIRECTORIES "${zstd_INCLUDE_DIR}"
-  )
-endif()
-
-mark_as_advanced(
-    zstd_INCLUDE_DIR
-    zstd_LIBRARY
+    REQUIRED_VARS
+        libzstd_LINK_LIBRARIES
+        libzstd_FOUND
+    VERSION_VAR libzstd_VERSION
 )
-- 
cgit v1.2.3