cmake: support ngtcp2 boringssl backend

Update the ngtcp2 find module to detect the boringssl backend. Determine
if the underlying OpenSSL implementation is BoringSSL and if so use that
as the ngtcp2 backend.

Reviewed-by: Jakub Zakrzewski
Closes #9065

diff --git a/CMake/FindNGTCP2.cmake b/CMake/FindNGTCP2.cmake
index 37b060ea0dae5eb71521d24e68711026104fbb2b..61e54c2d67ca2e32d8aaeba179c67ff3cf676ea3 100644 (file)
--- a/CMake/FindNGTCP2.cmake
+++ b/CMake/FindNGTCP2.cmake
@@ -71,7 +71,7 @@ endif()
 if(NGTCP2_FIND_COMPONENTS)
   set(NGTCP2_CRYPTO_BACKEND "")
   foreach(component IN LISTS NGTCP2_FIND_COMPONENTS)
-    if(component MATCHES "^(OpenSSL|GnuTLS)")
+    if(component MATCHES "^(BoringSSL|OpenSSL|GnuTLS)")
       if(NGTCP2_CRYPTO_BACKEND)
         message(FATAL_ERROR "NGTCP2: Only one crypto library can be selected")
       endif()

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5350e879850b1c8107e6c14aa4e43b8175edb29b..5ecb944c7b15c590a9ef42affd7dcded30044752 100644 (file)
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -451,6 +451,7 @@ if(CURL_USE_OPENSSL)
   check_symbol_exists(RAND_status "${CURL_INCLUDES}" HAVE_RAND_STATUS)
   check_symbol_exists(RAND_screen "${CURL_INCLUDES}" HAVE_RAND_SCREEN)
   check_symbol_exists(RAND_egd    "${CURL_INCLUDES}" HAVE_RAND_EGD)
+  check_symbol_exists(OPENSSL_IS_BORINGSSL "openssl/base.h" HAVE_BORINGSSL)
 
   add_definitions(-DOPENSSL_SUPPRESS_DEPRECATED)
 endif()
@@ -506,7 +507,7 @@ function(CheckQuicSupportInOpenSSL)
   set(CMAKE_REQUIRED_LIBRARIES  "${OPENSSL_LIBRARIES}")
   check_symbol_exists(SSL_CTX_set_quic_method "openssl/ssl.h" HAVE_SSL_CTX_SET_QUIC_METHOD)
   if(NOT HAVE_SSL_CTX_SET_QUIC_METHOD)
-    message(FATAL_ERROR "QUIC support is missing in OpenSSL/boringssl. Try setting -DOPENSSL_ROOT_DIR")
+    message(FATAL_ERROR "QUIC support is missing in OpenSSL/BoringSSL. Try setting -DOPENSSL_ROOT_DIR")
   endif()
   cmake_pop_check_state()
 endfunction()
@@ -514,7 +515,11 @@ endfunction()
 option(USE_NGTCP2 "Use ngtcp2 and nghttp3 libraries for HTTP/3 support" OFF)
 if(USE_NGTCP2)
   if(USE_OPENSSL)
-    find_package(NGTCP2 REQUIRED OpenSSL)
+    if(HAVE_BORINGSSL)
+      find_package(NGTCP2 REQUIRED BoringSSL)
+    else()
+      find_package(NGTCP2 REQUIRED OpenSSL)
+    endif()
     CheckQuicSupportInOpenSSL()
   elseif(USE_GNUTLS)
     # TODO add GnuTLS support as vtls library.