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1bf66fed67
Generalize the change made by commit v2.8.10~228^2~4 (FindOpenSSL: find cross-compiled OpenSSL from MinGW, 2012-07-23) to be used on builds hosted on Windows too. When building for MinGW, consider library names that come with MinGW before looking for the main Windows distribution of OpenSSL.
445 lines
14 KiB
CMake
445 lines
14 KiB
CMake
#.rst:
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# FindOpenSSL
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# -----------
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#
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# Find the OpenSSL encryption library.
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#
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# Imported Targets
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# ^^^^^^^^^^^^^^^^
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#
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# This module defines the following :prop_tgt:`IMPORTED` targets:
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#
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# ``OpenSSL::SSL``
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# The OpenSSL ``ssl`` library, if found.
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# ``OpenSSL::Crypto``
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# The OpenSSL ``crypto`` library, if found.
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#
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# Result Variables
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# ^^^^^^^^^^^^^^^^
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#
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# This module will set the following variables in your project:
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#
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# ``OPENSSL_FOUND``
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# System has the OpenSSL library.
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# ``OPENSSL_INCLUDE_DIR``
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# The OpenSSL include directory.
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# ``OPENSSL_CRYPTO_LIBRARY``
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# The OpenSSL crypto library.
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# ``OPENSSL_SSL_LIBRARY``
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# The OpenSSL SSL library.
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# ``OPENSSL_LIBRARIES``
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# All OpenSSL libraries.
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# ``OPENSSL_VERSION``
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# This is set to ``$major.$minor.$revision$patch`` (e.g. ``0.9.8s``).
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#
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# Hints
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# ^^^^^
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#
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# Set ``OPENSSL_ROOT_DIR`` to the root directory of an OpenSSL installation.
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# Set ``OPENSSL_USE_STATIC_LIBS`` to ``TRUE`` to look for static libraries.
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# Set ``OPENSSL_MSVC_STATIC_RT`` set ``TRUE`` to choose the MT version of the lib.
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#=============================================================================
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# Copyright 2006-2009 Kitware, Inc.
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# Copyright 2006 Alexander Neundorf <neundorf@kde.org>
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# Copyright 2009-2011 Mathieu Malaterre <mathieu.malaterre@gmail.com>
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#
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# Distributed under the OSI-approved BSD License (the "License");
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# see accompanying file Copyright.txt for details.
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#
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# This software is distributed WITHOUT ANY WARRANTY; without even the
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# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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# See the License for more information.
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#=============================================================================
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# (To distribute this file outside of CMake, substitute the full
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# License text for the above reference.)
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if (UNIX)
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find_package(PkgConfig QUIET)
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pkg_check_modules(_OPENSSL QUIET openssl)
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endif ()
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# Support preference of static libs by adjusting CMAKE_FIND_LIBRARY_SUFFIXES
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if(OPENSSL_USE_STATIC_LIBS)
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set(_openssl_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES ${CMAKE_FIND_LIBRARY_SUFFIXES})
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if(WIN32)
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set(CMAKE_FIND_LIBRARY_SUFFIXES .lib .a ${CMAKE_FIND_LIBRARY_SUFFIXES})
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else()
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set(CMAKE_FIND_LIBRARY_SUFFIXES .a )
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endif()
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endif()
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if (WIN32)
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# http://www.slproweb.com/products/Win32OpenSSL.html
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set(_OPENSSL_ROOT_HINTS
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${OPENSSL_ROOT_DIR}
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (32-bit)_is1;Inno Setup: App Path]"
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"[HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\OpenSSL (64-bit)_is1;Inno Setup: App Path]"
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ENV OPENSSL_ROOT_DIR
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)
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file(TO_CMAKE_PATH "$ENV{PROGRAMFILES}" _programfiles)
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set(_OPENSSL_ROOT_PATHS
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"${_programfiles}/OpenSSL"
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"${_programfiles}/OpenSSL-Win32"
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"${_programfiles}/OpenSSL-Win64"
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"C:/OpenSSL/"
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"C:/OpenSSL-Win32/"
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"C:/OpenSSL-Win64/"
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)
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unset(_programfiles)
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else ()
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set(_OPENSSL_ROOT_HINTS
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${OPENSSL_ROOT_DIR}
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ENV OPENSSL_ROOT_DIR
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)
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endif ()
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set(_OPENSSL_ROOT_HINTS_AND_PATHS
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HINTS ${_OPENSSL_ROOT_HINTS}
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PATHS ${_OPENSSL_ROOT_PATHS}
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)
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find_path(OPENSSL_INCLUDE_DIR
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NAMES
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openssl/ssl.h
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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HINTS
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${_OPENSSL_INCLUDEDIR}
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PATH_SUFFIXES
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include
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)
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if(WIN32 AND NOT CYGWIN)
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if(MSVC)
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# /MD and /MDd are the standard values - if someone wants to use
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# others, the libnames have to change here too
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# use also ssl and ssleay32 in debug as fallback for openssl < 0.9.8b
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# enable OPENSSL_MSVC_STATIC_RT to get the libs build /MT (Multithreaded no-DLL)
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# In Visual C++ naming convention each of these four kinds of Windows libraries has it's standard suffix:
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# * MD for dynamic-release
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# * MDd for dynamic-debug
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# * MT for static-release
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# * MTd for static-debug
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# Implementation details:
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# We are using the libraries located in the VC subdir instead of the parent directory eventhough :
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# libeay32MD.lib is identical to ../libeay32.lib, and
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# ssleay32MD.lib is identical to ../ssleay32.lib
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# enable OPENSSL_USE_STATIC_LIBS to use the static libs located in lib/VC/static
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if (OPENSSL_MSVC_STATIC_RT)
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set(_OPENSSL_MSVC_RT_MODE "MT")
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else ()
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set(_OPENSSL_MSVC_RT_MODE "MD")
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endif ()
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if(OPENSSL_USE_STATIC_LIBS)
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set(_OPENSSL_PATH_SUFFIXES
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"lib"
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"VC/static"
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"lib/VC/static"
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)
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else()
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set(_OPENSSL_PATH_SUFFIXES
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"lib"
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"VC"
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"lib/VC"
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)
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endif ()
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find_library(LIB_EAY_DEBUG
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NAMES
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libeay32${_OPENSSL_MSVC_RT_MODE}d
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libeay32d
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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${_OPENSSL_PATH_SUFFIXES}
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)
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find_library(LIB_EAY_RELEASE
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NAMES
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libeay32${_OPENSSL_MSVC_RT_MODE}
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libeay32
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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${_OPENSSL_PATH_SUFFIXES}
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)
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find_library(SSL_EAY_DEBUG
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NAMES
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ssleay32${_OPENSSL_MSVC_RT_MODE}d
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ssleay32d
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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${_OPENSSL_PATH_SUFFIXES}
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)
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find_library(SSL_EAY_RELEASE
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NAMES
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ssleay32${_OPENSSL_MSVC_RT_MODE}
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ssleay32
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ssl
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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${_OPENSSL_PATH_SUFFIXES}
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)
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set(LIB_EAY_LIBRARY_DEBUG "${LIB_EAY_DEBUG}")
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set(LIB_EAY_LIBRARY_RELEASE "${LIB_EAY_RELEASE}")
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set(SSL_EAY_LIBRARY_DEBUG "${SSL_EAY_DEBUG}")
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set(SSL_EAY_LIBRARY_RELEASE "${SSL_EAY_RELEASE}")
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include(${CMAKE_CURRENT_LIST_DIR}/SelectLibraryConfigurations.cmake)
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select_library_configurations(LIB_EAY)
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select_library_configurations(SSL_EAY)
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mark_as_advanced(LIB_EAY_LIBRARY_DEBUG LIB_EAY_LIBRARY_RELEASE
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SSL_EAY_LIBRARY_DEBUG SSL_EAY_LIBRARY_RELEASE)
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set(OPENSSL_SSL_LIBRARY ${SSL_EAY_LIBRARY} )
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set(OPENSSL_CRYPTO_LIBRARY ${LIB_EAY_LIBRARY} )
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set(OPENSSL_LIBRARIES ${SSL_EAY_LIBRARY} ${LIB_EAY_LIBRARY} )
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elseif(MINGW)
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# same player, for MinGW
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set(LIB_EAY_NAMES crypto libeay32)
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set(SSL_EAY_NAMES ssl ssleay32)
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find_library(LIB_EAY
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NAMES
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${LIB_EAY_NAMES}
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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"lib"
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"lib/MinGW"
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)
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find_library(SSL_EAY
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NAMES
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${SSL_EAY_NAMES}
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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PATH_SUFFIXES
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"lib"
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"lib/MinGW"
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)
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mark_as_advanced(SSL_EAY LIB_EAY)
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set(OPENSSL_SSL_LIBRARY ${SSL_EAY} )
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set(OPENSSL_CRYPTO_LIBRARY ${LIB_EAY} )
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set(OPENSSL_LIBRARIES ${SSL_EAY} ${LIB_EAY} )
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unset(LIB_EAY_NAMES)
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unset(SSL_EAY_NAMES)
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else()
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# Not sure what to pick for -say- intel, let's use the toplevel ones and hope someone report issues:
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find_library(LIB_EAY
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NAMES
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libeay32
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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HINTS
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${_OPENSSL_LIBDIR}
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PATH_SUFFIXES
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lib
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)
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find_library(SSL_EAY
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NAMES
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ssleay32
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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HINTS
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${_OPENSSL_LIBDIR}
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PATH_SUFFIXES
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lib
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)
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mark_as_advanced(SSL_EAY LIB_EAY)
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set(OPENSSL_SSL_LIBRARY ${SSL_EAY} )
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set(OPENSSL_CRYPTO_LIBRARY ${LIB_EAY} )
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set(OPENSSL_LIBRARIES ${SSL_EAY} ${LIB_EAY} )
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endif()
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else()
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find_library(OPENSSL_SSL_LIBRARY
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NAMES
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ssl
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ssleay32
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ssleay32MD
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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HINTS
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${_OPENSSL_LIBDIR}
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PATH_SUFFIXES
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lib
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)
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find_library(OPENSSL_CRYPTO_LIBRARY
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NAMES
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crypto
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${_OPENSSL_ROOT_HINTS_AND_PATHS}
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HINTS
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${_OPENSSL_LIBDIR}
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PATH_SUFFIXES
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lib
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)
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mark_as_advanced(OPENSSL_CRYPTO_LIBRARY OPENSSL_SSL_LIBRARY)
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# compat defines
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set(OPENSSL_SSL_LIBRARIES ${OPENSSL_SSL_LIBRARY})
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set(OPENSSL_CRYPTO_LIBRARIES ${OPENSSL_CRYPTO_LIBRARY})
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set(OPENSSL_LIBRARIES ${OPENSSL_SSL_LIBRARY} ${OPENSSL_CRYPTO_LIBRARY})
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endif()
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function(from_hex HEX DEC)
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string(TOUPPER "${HEX}" HEX)
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set(_res 0)
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string(LENGTH "${HEX}" _strlen)
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while (_strlen GREATER 0)
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math(EXPR _res "${_res} * 16")
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string(SUBSTRING "${HEX}" 0 1 NIBBLE)
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string(SUBSTRING "${HEX}" 1 -1 HEX)
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if (NIBBLE STREQUAL "A")
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math(EXPR _res "${_res} + 10")
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elseif (NIBBLE STREQUAL "B")
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math(EXPR _res "${_res} + 11")
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elseif (NIBBLE STREQUAL "C")
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math(EXPR _res "${_res} + 12")
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elseif (NIBBLE STREQUAL "D")
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math(EXPR _res "${_res} + 13")
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elseif (NIBBLE STREQUAL "E")
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math(EXPR _res "${_res} + 14")
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elseif (NIBBLE STREQUAL "F")
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math(EXPR _res "${_res} + 15")
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else()
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math(EXPR _res "${_res} + ${NIBBLE}")
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endif()
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string(LENGTH "${HEX}" _strlen)
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endwhile()
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set(${DEC} ${_res} PARENT_SCOPE)
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endfunction()
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if (OPENSSL_INCLUDE_DIR)
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if(OPENSSL_INCLUDE_DIR AND EXISTS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h")
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file(STRINGS "${OPENSSL_INCLUDE_DIR}/openssl/opensslv.h" openssl_version_str
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REGEX "^#[\t ]*define[\t ]+OPENSSL_VERSION_NUMBER[\t ]+0x([0-9a-fA-F])+.*")
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# The version number is encoded as 0xMNNFFPPS: major minor fix patch status
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# The status gives if this is a developer or prerelease and is ignored here.
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# Major, minor, and fix directly translate into the version numbers shown in
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# the string. The patch field translates to the single character suffix that
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# indicates the bug fix state, which 00 -> nothing, 01 -> a, 02 -> b and so
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# on.
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string(REGEX REPLACE "^.*OPENSSL_VERSION_NUMBER[\t ]+0x([0-9a-fA-F])([0-9a-fA-F][0-9a-fA-F])([0-9a-fA-F][0-9a-fA-F])([0-9a-fA-F][0-9a-fA-F])([0-9a-fA-F]).*$"
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"\\1;\\2;\\3;\\4;\\5" OPENSSL_VERSION_LIST "${openssl_version_str}")
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list(GET OPENSSL_VERSION_LIST 0 OPENSSL_VERSION_MAJOR)
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list(GET OPENSSL_VERSION_LIST 1 OPENSSL_VERSION_MINOR)
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from_hex("${OPENSSL_VERSION_MINOR}" OPENSSL_VERSION_MINOR)
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list(GET OPENSSL_VERSION_LIST 2 OPENSSL_VERSION_FIX)
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from_hex("${OPENSSL_VERSION_FIX}" OPENSSL_VERSION_FIX)
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list(GET OPENSSL_VERSION_LIST 3 OPENSSL_VERSION_PATCH)
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if (NOT OPENSSL_VERSION_PATCH STREQUAL "00")
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from_hex("${OPENSSL_VERSION_PATCH}" _tmp)
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# 96 is the ASCII code of 'a' minus 1
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math(EXPR OPENSSL_VERSION_PATCH_ASCII "${_tmp} + 96")
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unset(_tmp)
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# Once anyone knows how OpenSSL would call the patch versions beyond 'z'
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# this should be updated to handle that, too. This has not happened yet
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# so it is simply ignored here for now.
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string(ASCII "${OPENSSL_VERSION_PATCH_ASCII}" OPENSSL_VERSION_PATCH_STRING)
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endif ()
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set(OPENSSL_VERSION "${OPENSSL_VERSION_MAJOR}.${OPENSSL_VERSION_MINOR}.${OPENSSL_VERSION_FIX}${OPENSSL_VERSION_PATCH_STRING}")
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endif ()
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endif ()
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include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
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if (OPENSSL_VERSION)
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find_package_handle_standard_args(OpenSSL
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REQUIRED_VARS
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OPENSSL_LIBRARIES
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OPENSSL_INCLUDE_DIR
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VERSION_VAR
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OPENSSL_VERSION
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FAIL_MESSAGE
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"Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR"
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)
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else ()
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find_package_handle_standard_args(OpenSSL "Could NOT find OpenSSL, try to set the path to OpenSSL root folder in the system variable OPENSSL_ROOT_DIR"
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OPENSSL_LIBRARIES
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OPENSSL_INCLUDE_DIR
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)
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endif ()
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mark_as_advanced(OPENSSL_INCLUDE_DIR OPENSSL_LIBRARIES)
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if(OPENSSL_FOUND)
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if(NOT TARGET OpenSSL::Crypto AND
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(EXISTS "${OPENSSL_CRYPTO_LIBRARY}" OR
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EXISTS "${LIB_EAY_LIBRARY_DEBUG}" OR
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EXISTS "${LIB_EAY_LIBRARY_RELEASE}")
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)
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add_library(OpenSSL::Crypto UNKNOWN IMPORTED)
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set_target_properties(OpenSSL::Crypto PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${OPENSSL_INCLUDE_DIR}")
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if(EXISTS "${OPENSSL_CRYPTO_LIBRARY}")
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set_target_properties(OpenSSL::Crypto PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${OPENSSL_CRYPTO_LIBRARY}")
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endif()
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if(EXISTS "${LIB_EAY_LIBRARY_DEBUG}")
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set_property(TARGET OpenSSL::Crypto APPEND PROPERTY
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IMPORTED_CONFIGURATIONS DEBUG)
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set_target_properties(OpenSSL::Crypto PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "C"
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IMPORTED_LOCATION_DEBUG "${LIB_EAY_LIBRARY_DEBUG}")
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endif()
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if(EXISTS "${LIB_EAY_LIBRARY_RELEASE}")
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set_property(TARGET OpenSSL::Crypto APPEND PROPERTY
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IMPORTED_CONFIGURATIONS RELEASE)
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set_target_properties(OpenSSL::Crypto PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C"
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IMPORTED_LOCATION_RELEASE "${LIB_EAY_LIBRARY_RELEASE}")
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endif()
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endif()
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if(NOT TARGET OpenSSL::SSL AND
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(EXISTS "${OPENSSL_SSL_LIBRARY}" OR
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EXISTS "${SSL_EAY_LIBRARY_DEBUG}" OR
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EXISTS "${SSL_EAY_LIBRARY_RELEASE}")
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)
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add_library(OpenSSL::SSL UNKNOWN IMPORTED)
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set_target_properties(OpenSSL::SSL PROPERTIES
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INTERFACE_INCLUDE_DIRECTORIES "${OPENSSL_INCLUDE_DIR}")
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if(EXISTS "${OPENSSL_SSL_LIBRARY}")
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set_target_properties(OpenSSL::SSL PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES "C"
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IMPORTED_LOCATION "${OPENSSL_SSL_LIBRARY}")
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endif()
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if(EXISTS "${SSL_EAY_LIBRARY_DEBUG}")
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set_property(TARGET OpenSSL::SSL APPEND PROPERTY
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IMPORTED_CONFIGURATIONS DEBUG)
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set_target_properties(OpenSSL::SSL PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES_DEBUG "C"
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IMPORTED_LOCATION_DEBUG "${SSL_EAY_LIBRARY_DEBUG}")
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endif()
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if(EXISTS "${SSL_EAY_LIBRARY_RELEASE}")
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set_property(TARGET OpenSSL::SSL APPEND PROPERTY
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IMPORTED_CONFIGURATIONS RELEASE)
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set_target_properties(OpenSSL::SSL PROPERTIES
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IMPORTED_LINK_INTERFACE_LANGUAGES_RELEASE "C"
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IMPORTED_LOCATION_RELEASE "${SSL_EAY_LIBRARY_RELEASE}")
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endif()
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if(TARGET OpenSSL::Crypto)
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set_target_properties(OpenSSL::SSL PROPERTIES
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INTERFACE_LINK_LIBRARIES OpenSSL::Crypto)
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endif()
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endif()
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endif()
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# Restore the original find library ordering
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if(OPENSSL_USE_STATIC_LIBS)
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set(CMAKE_FIND_LIBRARY_SUFFIXES ${_openssl_ORIG_CMAKE_FIND_LIBRARY_SUFFIXES})
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endif()
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