build: Use custom jthread implementation if standard one is not available

lib/external/jthread/CMakeLists.txt

@@ -0,0 +1,6 @@
+cmake_minimum_required(VERSION 3.16)
+
+project(jthread)
+
+add_library(jthread INTERFACE)
+target_include_directories(jthread INTERFACE includes)

lib/external/jthread/includes/jthread.hpp

@@ -0,0 +1,7 @@
+#pragma once
+
+#if __has_include(<jthread>)
+    #include <jthread>
+#else
+    #include "../jthread/source/jthread.hpp"
+#endif

lib/libimhex/CMakeLists.txt

@@ -95,7 +95,7 @@ elseif (APPLE)
 endif ()
 
 target_link_libraries(libimhex PRIVATE ${FMT_LIBRARIES})
-target_link_libraries(libimhex PUBLIC dl imgui ${NFD_LIBRARIES} magic ${CAPSTONE_LIBRARIES} LLVMDemangle microtar ${NLOHMANN_JSON_LIBRARIES} ${YARA_LIBRARIES} ${MBEDTLS_LIBRARIES} ${LIBBACKTRACE_LIBRARIES} plcli libpl libpl-gen ${MINIAUDIO_LIBRARIES} libwolv-utils libwolv-io libwolv-hash libwolv-net libwolv-containers)
+target_link_libraries(libimhex PUBLIC dl imgui ${NFD_LIBRARIES} magic ${CAPSTONE_LIBRARIES} LLVMDemangle microtar ${NLOHMANN_JSON_LIBRARIES} ${YARA_LIBRARIES} ${MBEDTLS_LIBRARIES} ${LIBBACKTRACE_LIBRARIES} plcli libpl libpl-gen ${MINIAUDIO_LIBRARIES} ${JTHREAD_LIBRARIES} libwolv-utils libwolv-io libwolv-hash libwolv-net libwolv-containers)
 
 set_property(TARGET libimhex PROPERTY INTERPROCEDURAL_OPTIMIZATION FALSE)
 

lib/libimhex/include/hex/api/content_registry.hpp

@@ -17,9 +17,7 @@
 #include <utility>
 #include <vector>
 
-#if defined(OS_WEB)
 #include <jthread.hpp>
-#endif
 
 #include <nlohmann/json.hpp>
 

lib/libimhex/include/hex/api/task.hpp

@@ -12,9 +12,7 @@
 #include <list>
 #include <condition_variable>
 
-#if defined(OS_WEB)
 #include <jthread.hpp>
-#endif
 
 namespace hex {
 

lib/libimhex/source/api/content_registry.cpp

@@ -8,9 +8,9 @@
 
 #include <filesystem>
 #include <thread>
+#include <jthread.hpp>
 
 #if defined(OS_WEB)
-#include <jthread.hpp>
 #include <emscripten.h>
 #endif