Using libressl instead of openssl

3rdParty/curl/CMakeLists.txt

@@ -25,16 +25,32 @@ endif ()
 function(LinkCurl TARGET)
     find_package(CURL QUIET)
     if (NOT ${CURL_FOUND})
-        set(CURL_DEPS_INSTALL ${CMAKE_BINARY_DIR}/deps_curl)
-        target_include_directories(${TARGET} PRIVATE ${CURL_DEPS_INSTALL}/INSTALL/include)
-        target_link_directories(${TARGET} PRIVATE ${CURL_DEPS_INSTALL}/INSTALL/lib)
-        if (MSVC)
-            target_link_libraries(${TARGET} PRIVATE libcrypto.lib libssl.lib libcurl_imp.lib)
-        elseif (APPLE)
-            target_link_libraries(${TARGET} PRIVATE curl)
-        else ()
-            target_link_libraries(${TARGET} PRIVATE crypto ssl curl)
+        if (NOT DEFINED CURL_MIRROR_LINK)
+            set(CURL_MIRROR_LINK https://curl.se/download/curl-7.78.0.tar.gz)
         endif ()
+        if (NOT DEFINED LIBRESSL_MIRROR_LINK)
+            set(LIBRESSL_MIRROR_LINK https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.4.2.tar.gz)
+        endif ()
+
+        FetchContent_Declare(
+            libressl
+            URL ${LIBRESSL_MIRROR_LINK}
+        )
+        FetchContent_MakeAvailable(libressl)
+
+        FetchContent_Declare(
+            curl
+            URL ${CURL_MIRROR_LINK}
+        )
+        FetchContent_GetProperties(curl)
+        if(NOT curl_POPULATED)
+            set(CURL_USE_LIBRESSL ON CACHE BOOL "Use LibreSSL instead of OpenSSL" FORCE)
+            FetchContent_Populate(curl)
+            add_subdirectory(${curl_SOURCE_DIR} ${curl_BINARY_DIR})
+
+            set(OPENSSL_ROOT_DIR ${libressl_SOURCE_DIR})
+            set(OPENSSL_LIBRARIES ${libressl_BINARY_DIR})
+        endif()
     else ()
         target_include_directories(${TARGET} PRIVATE ${CURL_INCLUDE_DIR})
         target_link_libraries(${TARGET} PRIVATE CURL::libcurl)