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      1 # Copyright 2017 gRPC authors.
      2 #
      3 # Licensed under the Apache License, Version 2.0 (the "License");
      4 # you may not use this file except in compliance with the License.
      5 # You may obtain a copy of the License at
      6 #
      7 #     http://www.apache.org/licenses/LICENSE-2.0
      8 #
      9 # Unless required by applicable law or agreed to in writing, software
     10 # distributed under the License is distributed on an "AS IS" BASIS,
     11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12 # See the License for the specific language governing permissions and
     13 # limitations under the License.
     14 
     15 if("${gRPC_SSL_PROVIDER}" STREQUAL "module")
     16   if(NOT BORINGSSL_ROOT_DIR)
     17     set(BORINGSSL_ROOT_DIR ${CMAKE_CURRENT_SOURCE_DIR}/third_party/boringssl)
     18   endif()
     19   if(EXISTS "${BORINGSSL_ROOT_DIR}/CMakeLists.txt")
     20     if (MSVC AND NOT CMAKE_GENERATOR STREQUAL "Ninja")
     21       # Visual Studio build with assembly optimizations is broken,
     22       # but it works with Ninja generator.
     23       # This will get eventually fixed in cmake, but until then
     24       # we need to disable assembly optimizations.
     25       # See https://github.com/grpc/grpc/issues/16376
     26       set(OPENSSL_NO_ASM ON)
     27     endif()
     28     add_subdirectory(${BORINGSSL_ROOT_DIR} third_party/boringssl)
     29     if(TARGET ssl)
     30       set(_gRPC_SSL_LIBRARIES ssl)
     31       set(_gRPC_SSL_INCLUDE_DIR ${BORINGSSL_ROOT_DIR}/include)
     32     endif()
     33   else()
     34       message(WARNING "gRPC_SSL_PROVIDER is \"module\" but BORINGSSL_ROOT_DIR is wrong")
     35   endif()
     36   if(gRPC_INSTALL)
     37     message(WARNING "gRPC_INSTALL will be forced to FALSE because gRPC_SSL_PROVIDER is \"module\"")
     38     set(gRPC_INSTALL FALSE)
     39   endif()
     40 elseif("${gRPC_SSL_PROVIDER}" STREQUAL "package")
     41   # OpenSSL installation directory can be configured by setting OPENSSL_ROOT_DIR
     42   # We expect to locate OpenSSL using the built-in cmake module as the openssl
     43   # project itself does not provide installation support in its CMakeLists.txt
     44   # See https://cmake.org/cmake/help/v3.6/module/FindOpenSSL.html
     45   find_package(OpenSSL REQUIRED)
     46   
     47   if(TARGET OpenSSL::SSL)
     48     set(_gRPC_SSL_LIBRARIES OpenSSL::SSL OpenSSL::Crypto)
     49   else()
     50     set(_gRPC_SSL_LIBRARIES ${OPENSSL_LIBRARIES})
     51   endif()
     52   set(_gRPC_SSL_INCLUDE_DIR ${OPENSSL_INCLUDE_DIR})
     53   
     54   set(_gRPC_FIND_SSL "if(NOT OPENSSL_FOUND)\n  find_package(OpenSSL)\nendif()")
     55 endif()
     56