286 lines
9.0 KiB
CMake
286 lines
9.0 KiB
CMake
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# - Try to find the GSS Kerberos library
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# Once done this will define
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#
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# GSS_ROOT_DIR - Set this variable to the root installation of GSS
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#
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# Read-Only variables:
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# GSS_FOUND - system has the Heimdal library
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# GSS_FLAVOUR - "MIT" or "Heimdal" if anything found.
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# GSS_INCLUDE_DIR - the Heimdal include directory
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# GSS_LIBRARIES - The libraries needed to use GSS
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# GSS_LINK_DIRECTORIES - Directories to add to linker search path
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# GSS_LINKER_FLAGS - Additional linker flags
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# GSS_COMPILER_FLAGS - Additional compiler flags
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# GSS_VERSION - This is set to version advertised by pkg-config or read from manifest.
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# In case the library is found but no version info available it'll be set to "unknown"
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set(_MIT_MODNAME mit-krb5-gssapi)
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set(_HEIMDAL_MODNAME heimdal-gssapi)
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include(CheckIncludeFile)
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include(CheckIncludeFiles)
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include(CheckTypeSize)
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set(_GSS_ROOT_HINTS
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"${GSS_ROOT_DIR}"
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"$ENV{GSS_ROOT_DIR}"
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)
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# try to find library using system pkg-config if user didn't specify root dir
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if(NOT GSS_ROOT_DIR AND NOT "$ENV{GSS_ROOT_DIR}")
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if(UNIX)
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find_package(PkgConfig QUIET)
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pkg_search_module(_GSS_PKG ${_MIT_MODNAME} ${_HEIMDAL_MODNAME})
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list(APPEND _GSS_ROOT_HINTS "${_GSS_PKG_PREFIX}")
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elseif(WIN32)
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list(APPEND _GSS_ROOT_HINTS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos;InstallDir]")
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endif()
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endif()
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if(NOT _GSS_FOUND) #not found by pkg-config. Let's take more traditional approach.
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find_file(_GSS_CONFIGURE_SCRIPT
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NAMES
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"krb5-config"
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HINTS
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${_GSS_ROOT_HINTS}
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PATH_SUFFIXES
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bin
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NO_CMAKE_PATH
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NO_CMAKE_ENVIRONMENT_PATH
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)
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# if not found in user-supplied directories, maybe system knows better
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find_file(_GSS_CONFIGURE_SCRIPT
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NAMES
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"krb5-config"
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PATH_SUFFIXES
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bin
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)
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if(_GSS_CONFIGURE_SCRIPT)
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execute_process(
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COMMAND ${_GSS_CONFIGURE_SCRIPT} "--cflags" "gssapi"
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OUTPUT_VARIABLE _GSS_CFLAGS
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RESULT_VARIABLE _GSS_CONFIGURE_FAILED
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)
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message(STATUS "CFLAGS: ${_GSS_CFLAGS}")
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if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
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# should also work in an odd case when multiple directories are given
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string(STRIP "${_GSS_CFLAGS}" _GSS_CFLAGS)
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string(REGEX REPLACE " +-I" ";" _GSS_CFLAGS "${_GSS_CFLAGS}")
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string(REGEX REPLACE " +-([^I][^ \\t;]*)" ";-\\1" _GSS_CFLAGS "${_GSS_CFLAGS}")
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foreach(_flag ${_GSS_CFLAGS})
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if(_flag MATCHES "^-I.*")
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string(REGEX REPLACE "^-I" "" _val "${_flag}")
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list(APPEND _GSS_INCLUDE_DIR "${_val}")
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else()
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list(APPEND _GSS_COMPILER_FLAGS "${_flag}")
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endif()
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endforeach()
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endif()
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execute_process(
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COMMAND ${_GSS_CONFIGURE_SCRIPT} "--libs" "gssapi"
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OUTPUT_VARIABLE _GSS_LIB_FLAGS
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RESULT_VARIABLE _GSS_CONFIGURE_FAILED
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)
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message(STATUS "LDFLAGS: ${_GSS_LIB_FLAGS}")
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if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
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# this script gives us libraries and link directories. Blah. We have to deal with it.
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string(STRIP "${_GSS_LIB_FLAGS}" _GSS_LIB_FLAGS)
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string(REGEX REPLACE " +-(L|l)" ";-\\1" _GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
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string(REGEX REPLACE " +-([^Ll][^ \\t;]*)" ";-\\1" _GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
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foreach(_flag ${_GSS_LIB_FLAGS})
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if(_flag MATCHES "^-l.*")
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string(REGEX REPLACE "^-l" "" _val "${_flag}")
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list(APPEND _GSS_LIBRARIES "${_val}")
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elseif(_flag MATCHES "^-L.*")
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string(REGEX REPLACE "^-L" "" _val "${_flag}")
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list(APPEND _GSS_LINK_DIRECTORIES "${_val}")
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else()
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list(APPEND _GSS_LINKER_FLAGS "${_flag}")
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endif()
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endforeach()
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endif()
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execute_process(
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COMMAND ${_GSS_CONFIGURE_SCRIPT} "--version"
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OUTPUT_VARIABLE _GSS_VERSION
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RESULT_VARIABLE _GSS_CONFIGURE_FAILED
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)
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# older versions may not have the "--version" parameter. In this case we just don't care.
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if(_GSS_CONFIGURE_FAILED)
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set(_GSS_VERSION 0)
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endif()
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execute_process(
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COMMAND ${_GSS_CONFIGURE_SCRIPT} "--vendor"
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OUTPUT_VARIABLE _GSS_VENDOR
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RESULT_VARIABLE _GSS_CONFIGURE_FAILED
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)
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# older versions may not have the "--vendor" parameter. In this case we just don't care.
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if(_GSS_CONFIGURE_FAILED)
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set(GSS_FLAVOUR "Heimdal") # most probably, shouldn't really matter
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else()
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if(_GSS_VENDOR MATCHES ".*H|heimdal.*")
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set(GSS_FLAVOUR "Heimdal")
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else()
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set(GSS_FLAVOUR "MIT")
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endif()
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endif()
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else() # either there is no config script or we are on platform that doesn't provide one (Windows?)
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find_path(_GSS_INCLUDE_DIR
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NAMES
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"gssapi/gssapi.h"
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HINTS
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${_GSS_ROOT_HINTS}
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PATH_SUFFIXES
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include
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inc
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)
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if(_GSS_INCLUDE_DIR) #jay, we've found something
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set(CMAKE_REQUIRED_INCLUDES "${_GSS_INCLUDE_DIR}")
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check_include_files( "gssapi/gssapi_generic.h;gssapi/gssapi_krb5.h" _GSS_HAVE_MIT_HEADERS)
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if(_GSS_HAVE_MIT_HEADERS)
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set(GSS_FLAVOUR "MIT")
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else()
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# prevent compiling the header - just check if we can include it
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set(CMAKE_REQUIRED_DEFINITIONS "${CMAKE_REQUIRED_DEFINITIONS} -D__ROKEN_H__")
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check_include_file( "roken.h" _GSS_HAVE_ROKEN_H)
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check_include_file( "heimdal/roken.h" _GSS_HAVE_HEIMDAL_ROKEN_H)
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if(_GSS_HAVE_ROKEN_H OR _GSS_HAVE_HEIMDAL_ROKEN_H)
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set(GSS_FLAVOUR "Heimdal")
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endif()
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set(CMAKE_REQUIRED_DEFINITIONS "")
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endif()
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else()
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# I'm not convienced if this is the right way but this is what autotools do at the moment
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find_path(_GSS_INCLUDE_DIR
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NAMES
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"gssapi.h"
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HINTS
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${_GSS_ROOT_HINTS}
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PATH_SUFFIXES
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include
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inc
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)
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if(_GSS_INCLUDE_DIR)
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set(GSS_FLAVOUR "Heimdal")
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endif()
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endif()
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# if we have headers, check if we can link libraries
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if(GSS_FLAVOUR)
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set(_GSS_LIBDIR_SUFFIXES "")
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set(_GSS_LIBDIR_HINTS ${_GSS_ROOT_HINTS})
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get_filename_component(_GSS_CALCULATED_POTENTIAL_ROOT "${_GSS_INCLUDE_DIR}" PATH)
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list(APPEND _GSS_LIBDIR_HINTS ${_GSS_CALCULATED_POTENTIAL_ROOT})
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if(WIN32)
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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list(APPEND _GSS_LIBDIR_SUFFIXES "lib/AMD64")
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if(GSS_FLAVOUR STREQUAL "MIT")
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set(_GSS_LIBNAME "gssapi64")
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else()
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set(_GSS_LIBNAME "libgssapi")
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endif()
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else()
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list(APPEND _GSS_LIBDIR_SUFFIXES "lib/i386")
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if(GSS_FLAVOUR STREQUAL "MIT")
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set(_GSS_LIBNAME "gssapi32")
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else()
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set(_GSS_LIBNAME "libgssapi")
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endif()
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endif()
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else()
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list(APPEND _GSS_LIBDIR_SUFFIXES "lib;lib64") # those suffixes are not checked for HINTS
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if(GSS_FLAVOUR STREQUAL "MIT")
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set(_GSS_LIBNAME "gssapi_krb5")
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else()
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set(_GSS_LIBNAME "gssapi")
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endif()
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endif()
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find_library(_GSS_LIBRARIES
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NAMES
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${_GSS_LIBNAME}
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HINTS
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${_GSS_LIBDIR_HINTS}
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PATH_SUFFIXES
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${_GSS_LIBDIR_SUFFIXES}
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)
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endif()
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endif()
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else()
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if(_GSS_PKG_${_MIT_MODNAME}_VERSION)
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set(GSS_FLAVOUR "MIT")
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set(_GSS_VERSION _GSS_PKG_${_MIT_MODNAME}_VERSION)
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else()
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set(GSS_FLAVOUR "Heimdal")
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set(_GSS_VERSION _GSS_PKG_${_MIT_HEIMDAL}_VERSION)
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endif()
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endif()
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set(GSS_INCLUDE_DIR ${_GSS_INCLUDE_DIR})
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set(GSS_LIBRARIES ${_GSS_LIBRARIES})
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set(GSS_LINK_DIRECTORIES ${_GSS_LINK_DIRECTORIES})
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set(GSS_LINKER_FLAGS ${_GSS_LINKER_FLAGS})
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set(GSS_COMPILER_FLAGS ${_GSS_COMPILER_FLAGS})
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set(GSS_VERSION ${_GSS_VERSION})
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if(GSS_FLAVOUR)
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if(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "Heimdal")
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if(CMAKE_SIZEOF_VOID_P EQUAL 8)
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set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.amd64.manifest")
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else()
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set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.x86.manifest")
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endif()
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if(EXISTS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}")
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file(STRINGS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}" heimdal_version_str
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REGEX "^.*version=\"[0-9]\\.[^\"]+\".*$")
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string(REGEX MATCH "[0-9]\\.[^\"]+"
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GSS_VERSION "${heimdal_version_str}")
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endif()
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if(NOT GSS_VERSION)
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set(GSS_VERSION "Heimdal Unknown")
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endif()
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elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "MIT")
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get_filename_component(_MIT_VERSION "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos\\SDK\\CurrentVersion;VersionString]" NAME CACHE)
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if(WIN32 AND _MIT_VERSION)
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set(GSS_VERSION "${_MIT_VERSION}")
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else()
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set(GSS_VERSION "MIT Unknown")
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endif()
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endif()
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endif()
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include(FindPackageHandleStandardArgs)
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set(_GSS_REQUIRED_VARS GSS_LIBRARIES GSS_FLAVOUR)
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find_package_handle_standard_args(GSS
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REQUIRED_VARS
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${_GSS_REQUIRED_VARS}
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VERSION_VAR
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GSS_VERSION
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FAIL_MESSAGE
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"Could NOT find GSS, try to set the path to GSS root folder in the system variable GSS_ROOT_DIR"
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)
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mark_as_advanced(GSS_INCLUDE_DIR GSS_LIBRARIES)
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