Merge pull request 'Using libressl on windows' (#76) from libressl into master

Reviewed-on: https://git.madvoxel.net/OpenVulkano/OpenVulkano/pulls/76
Reviewed-by: Georg Hagen <georg.hagen@madvoxel.com>

3rdParty/curl/CMakeLists.txt

@@ -4,8 +4,13 @@ set(CURL_DEPS_INSTALL ${CMAKE_BINARY_DIR}/deps_curl)
 find_package(CURL QUIET)
 if (NOT ${CURL_FOUND})
     file(MAKE_DIRECTORY ${CURL_DEPS_INSTALL})
+    if (WIN32)
+        set(EXT_DIR ext_windows)
+    else ()
+        set(EXT_DIR ext)
+    endif ()
     execute_process(
-            COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR} -DTOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} ${CMAKE_CURRENT_SOURCE_DIR}/ext -DCURL_REPO=${CURL_REPO} -DOPENSSL_REPO=${OPENSSL_REPO} -DPLATFORM=${PLATFORM}
+            COMMAND ${CMAKE_COMMAND} -G ${CMAKE_GENERATOR} -DTOOLCHAIN_FILE=${CMAKE_TOOLCHAIN_FILE} ${CMAKE_CURRENT_SOURCE_DIR}/${EXT_DIR} -DCURL_REPO=${CURL_REPO} -DOPENSSL_REPO=${OPENSSL_REPO} -DPLATFORM=${PLATFORM}
             WORKING_DIRECTORY ${CURL_DEPS_INSTALL}
     )
     execute_process(
@@ -28,10 +33,11 @@ function(LinkCurl TARGET)
         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)
+
+        if (APPLE)
             target_link_libraries(${TARGET} PRIVATE curl)
+        elseif (WIN32)
+            target_link_libraries(${TARGET} PRIVATE ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
         else ()
             target_link_libraries(${TARGET} PRIVATE crypto ssl curl)
         endif ()

3rdParty/curl/ext_windows/CMakeLists.txt

@@ -0,0 +1,45 @@
+cmake_minimum_required(VERSION 3.16)
+project(build_curl)
+include(FetchContent)
+
+if (NOT DEFINED CURL_MIRROR_LINK)
+    set(CURL_MIRROR_LINK https://curl.se/download/curl-8.8.0.tar.gz)
+endif ()
+if (NOT DEFINED LIBRESSL_MIRROR_LINK)
+    set(LIBRESSL_MIRROR_LINK https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.9.2.tar.gz)
+endif ()
+
+set(LIBRESSL_TESTS OFF CACHE BOOL "" FORCE)
+FetchContent_Declare(
+    libressl
+    URL ${LIBRESSL_MIRROR_LINK}
+    CMAKE_ARGS
+        -DCMAKE_BUILD_TYPE=Release
+        -DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_BINARY_DIR}/INSTALL
+)
+FetchContent_MakeAvailable(libressl)
+
+set(BUILD_SHARED_LIBS OFF CACHE BOOL "Build shared libraries" FORCE)
+set(BUILD_STATIC_LIBS ON CACHE BOOL "Build static libraries" FORCE)
+set(BUILD_STATIC_CURL ON CACHE BOOL "Build curl executable with static libcurl" FORCE)
+set(CURL_DISABLE_TESTS ON CACHE BOOL "Do no build tests" FORCE)
+
+set(CURL_USE_LIBRESSL ON CACHE BOOL "Use LibreSSL instead of OpenSSL" FORCE)
+set(OPENSSL_ROOT_DIR ${libressl_SOURCE_DIR} CACHE PATH "Path to LibreSSL root directory" FORCE)
+if (WIN32)
+    set(OPENSSL_CRYPTO_LIBRARY ${libressl_BINARY_DIR}/crypto/release/crypto.lib CACHE FILEPATH "Path to LibreSSL crypto library" FORCE)
+    set(OPENSSL_SSL_LIBRARY ${libressl_BINARY_DIR}/ssl/release/ssl.lib CACHE FILEPATH "Path to LibreSSL SSL library" FORCE)
+else ()
+    set(OPENSSL_CRYPTO_LIBRARY ${libressl_BINARY_DIR}/crypto/libcrypto.a CACHE FILEPATH "Path to LibreSSL crypto library" FORCE)
+    set(OPENSSL_SSL_LIBRARY ${libressl_BINARY_DIR}/ssl/libssl.a CACHE FILEPATH "Path to LibreSSL SSL library" FORCE)
+endif ()
+set(OPENSSL_INCLUDE_DIR ${libressl_SOURCE_DIR}/include CACHE PATH "Path to LibreSSL include directory" FORCE)
+
+FetchContent_Declare(
+    curl
+    URL ${CURL_MIRROR_LINK}
+    CMAKE_ARGS
+        -DCMAKE_BUILD_TYPE=Release
+        -DCMAKE_INSTALL_PREFIX:PATH=${CMAKE_BINARY_DIR}/INSTALL
+)
+FetchContent_MakeAvailable(curl)