Use system libarchive if available

3rdParty/CMakeLists.txt

@@ -17,24 +17,32 @@ add_subdirectory(tracy)
 add_subdirectory(libstud-uuid)
 add_subdirectory(rapidyaml)
 
-if (NOT USE_SYSTEM_LIB_ARCHIVE)
-file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/deps)
-execute_process(
+
+#TODO move into a different file
+find_package(LibArchive QUIET)
+if (NOT LibArchive_FOUND)
+    file(MAKE_DIRECTORY ${CMAKE_BINARY_DIR}/deps)
+    execute_process(
             COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR} -DTOOLCHAIN_FILE=${TOOLCHAIN_FILE} ${CMAKE_CURRENT_SOURCE_DIR}/libarchive
             WORKING_DIRECTORY ${CMAKE_BINARY_DIR}/deps
-)
-execute_process(
+    )
+    execute_process(
             COMMAND ${CMAKE_COMMAND} --build ${CMAKE_BINARY_DIR}/deps
-)
-list(APPEND CMAKE_PREFIX_PATH ${CMAKE_BINARY_DIR}/deps/INSTALL)
+    )
+    list(APPEND CMAKE_PREFIX_PATH ${CMAKE_BINARY_DIR}/deps/INSTALL)
+else ()
+    message("Using system LibArchive")
+    set(USING_SYSTEM_LIBARCHIVE ON PARENT_SCOPE)
 endif ()
 
 function(LinkLibArchive TARGET)
     find_package(LibArchive REQUIRED)
     set(ZLIB_USE_STATIC_LIBS ON)
     find_package(ZLIB REQUIRED)
+    if (NOT USING_SYSTEM_LIBARCHIVE)
         find_package(LZ4 REQUIRED)
         find_package(zstd REQUIRED)
+    endif ()
     target_include_directories(${TARGET} PRIVATE ${LibArchive_INCLUDE_DIR})
     target_link_libraries(${TARGET} PRIVATE ${LibArchive_LIBRARIES} ${ZLIB_LIBRARIES} ${zstd_LIBRARIES} ${LZ4_LIBRARIES})
 endfunction()