cyclonedds/cmake/Modules/FindOpenSSL.cmake

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#
# Copyright(c) 2006 to 2018 ADLINK Technology Limited and others
#
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License v. 2.0 which is available at
# http://www.eclipse.org/legal/epl-2.0, or the Eclipse Distribution License
# v. 1.0 which is available at
# http://www.eclipse.org/org/documents/edl-v10.php.
#
# SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
#
if(TARGET CONAN_PKG::OpenSSL)
add_library(OpenSSL::SSL INTERFACE IMPORTED)
target_link_libraries(OpenSSL::SSL INTERFACE CONAN_PKG::OpenSSL)
set(OPENSSL_FOUND TRUE)
else()
# Loop over a list of possible module paths (without the current directory).
get_filename_component(DIR "${CMAKE_CURRENT_LIST_DIR}" ABSOLUTE)
foreach(MODULE_DIR ${CMAKE_MODULE_PATH} ${CMAKE_ROOT}/Modules)
get_filename_component(MODULE_DIR "${MODULE_DIR}" ABSOLUTE)
if(NOT MODULE_DIR STREQUAL DIR)
if(EXISTS "${MODULE_DIR}/FindOpenSSL.cmake")
set(FIND_PACKAGE_FILE "${MODULE_DIR}/FindOpenSSL.cmake")
break()
endif()
endif()
endforeach()
if(FIND_PACKAGE_FILE)
include("${FIND_PACKAGE_FILE}")
endif()
endif()
# OpenSSL DLL on Windows: use of BIO_s_fd and BIO_s_file (directly or indirectly) requires
# the executable to incorporate OpenSSL applink.c. CMake 18 adds support for handling
# this as part of the OpenSSL package, but we can't require such a new CMake version.
if(OPENSSL_FOUND AND EXISTS "${OPENSSL_INCLUDE_DIR}/openssl/applink.c")
set(CYCLONEDDS_OPENSSL_APPLINK "${OPENSSL_INCLUDE_DIR}/openssl/applink.c")
else()
set(CYCLONEDDS_OPENSSL_APPLINK "")
endif()