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-rw-r--r--CMake/FindGSS.cmake289
1 files changed, 289 insertions, 0 deletions
diff --git a/CMake/FindGSS.cmake b/CMake/FindGSS.cmake
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+++ b/CMake/FindGSS.cmake
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+# - Try to find the GSS Kerberos library
+# Once done this will define
+#
+# GSS_ROOT_DIR - Set this variable to the root installation of GSS
+#
+# Read-Only variables:
+# GSS_FOUND - system has the Heimdal library
+# GSS_FLAVOUR - "MIT" or "Heimdal" if anything found.
+# GSS_INCLUDE_DIR - the Heimdal include directory
+# GSS_LIBRARIES - The libraries needed to use GSS
+# GSS_LINK_DIRECTORIES - Directories to add to linker search path
+# GSS_LINKER_FLAGS - Additional linker flags
+# GSS_COMPILER_FLAGS - Additional compiler flags
+# GSS_VERSION - This is set to version advertised by pkg-config or read from manifest.
+# In case the library is found but no version info availabe it'll be set to "unknown"
+
+set(_MIT_MODNAME mit-krb5-gssapi)
+set(_HEIMDAL_MODNAME heimdal-gssapi)
+
+include(CheckIncludeFile)
+include(CheckIncludeFiles)
+include(CheckTypeSize)
+
+set(_GSS_ROOT_HINTS
+ "${GSS_ROOT_DIR}"
+ "$ENV{GSS_ROOT_DIR}"
+)
+
+# try to find library using system pkg-config if user didn't specify root dir
+if(NOT GSS_ROOT_DIR AND NOT "$ENV{GSS_ROOT_DIR}")
+ if(UNIX)
+ find_package(PkgConfig QUIET)
+ pkg_search_module(_GSS_PKG ${_MIT_MODNAME} ${_HEIMDAL_MODNAME})
+ list(APPEND _GSS_ROOT_HINTS "${_GSS_PKG_PREFIX}")
+ elseif(WIN32)
+ list(APPEND _GSS_ROOT_HINTS "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos;InstallDir]")
+ endif()
+endif()
+
+if(NOT _GSS_FOUND) #not found by pkg-config. Let's take more traditional approach.
+ find_file(_GSS_CONFIGURE_SCRIPT
+ NAMES
+ "krb5-config"
+ HINTS
+ ${_GSS_ROOT_HINTS}
+ PATH_SUFFIXES
+ bin
+ NO_CMAKE_PATH
+ NO_CMAKE_ENVIRONMENT_PATH
+ )
+
+ # if not found in user-supplied directories, maybe system knows better
+ find_file(_GSS_CONFIGURE_SCRIPT
+ NAMES
+ "krb5-config"
+ PATH_SUFFIXES
+ bin
+ )
+
+ if(_GSS_CONFIGURE_SCRIPT)
+ execute_process(
+ COMMAND ${_GSS_CONFIGURE_SCRIPT} "--cflags" "gssapi"
+ OUTPUT_VARIABLE _GSS_CFLAGS
+ RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+ )
+message(STATUS "CFLAGS: ${_GSS_CFLAGS}")
+ if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
+ # should also work in an odd case when multiple directories are given
+ string(STRIP "${_GSS_CFLAGS}" _GSS_CFLAGS)
+ string(REGEX REPLACE " +-I" ";" _GSS_CFLAGS "${_GSS_CFLAGS}")
+ string(REGEX REPLACE " +-([^I][^ \\t;]*)" ";-\\1"_GSS_CFLAGS "${_GSS_CFLAGS}")
+
+ foreach(_flag ${_GSS_CFLAGS})
+ if(_flag MATCHES "^-I.*")
+ string(REGEX REPLACE "^-I" "" _val "${_flag}")
+ list(APPEND _GSS_INCLUDE_DIR "${_val}")
+ else()
+ list(APPEND _GSS_COMPILER_FLAGS "${_flag}")
+ endif()
+ endforeach()
+ endif()
+
+ execute_process(
+ COMMAND ${_GSS_CONFIGURE_SCRIPT} "--libs" "gssapi"
+ OUTPUT_VARIABLE _GSS_LIB_FLAGS
+ RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+ )
+message(STATUS "LDFLAGS: ${_GSS_LIB_FLAGS}")
+ if(NOT _GSS_CONFIGURE_FAILED) # 0 means success
+ # this script gives us libraries and link directories. Blah. We have to deal with it.
+ string(STRIP "${_GSS_LIB_FLAGS}" _GSS_LIB_FLAGS)
+ string(REGEX REPLACE " +-(L|l)" ";-\\1" _GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
+ string(REGEX REPLACE " +-([^Ll][^ \\t;]*)" ";-\\1"_GSS_LIB_FLAGS "${_GSS_LIB_FLAGS}")
+
+ foreach(_flag ${_GSS_LIB_FLAGS})
+ if(_flag MATCHES "^-l.*")
+ string(REGEX REPLACE "^-l" "" _val "${_flag}")
+ list(APPEND _GSS_LIBRARIES "${_val}")
+ elseif(_flag MATCHES "^-L.*")
+ string(REGEX REPLACE "^-L" "" _val "${_flag}")
+ list(APPEND _GSS_LINK_DIRECTORIES "${_val}")
+ else()
+ list(APPEND _GSS_LINKER_FLAGS "${_flag}")
+ endif()
+ endforeach()
+ endif()
+
+
+ execute_process(
+ COMMAND ${_GSS_CONFIGURE_SCRIPT} "--version"
+ OUTPUT_VARIABLE _GSS_VERSION
+ RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+ )
+
+ # older versions may not have the "--version" parameter. In this case we just don't care.
+ if(_GSS_CONFIGURE_FAILED)
+ set(_GSS_VERSION 0)
+ endif()
+
+
+ execute_process(
+ COMMAND ${_GSS_CONFIGURE_SCRIPT} "--vendor"
+ OUTPUT_VARIABLE _GSS_VENDOR
+ RESULT_VARIABLE _GSS_CONFIGURE_FAILED
+ )
+
+ # older versions may not have the "--vendor" parameter. In this case we just don't care.
+ if(_GSS_CONFIGURE_FAILED)
+ set(GSS_FLAVOUR "Heimdal") # most probably, shouldn't really matter
+ else()
+ if(_GSS_VENDOR MATCHES ".*H|heimdal.*")
+ set(GSS_FLAVOUR "Heimdal")
+ else()
+ set(GSS_FLAVOUR "MIT")
+ endif()
+ endif()
+
+ else() # either there is no config script or we are on platform that doesn't provide one (Windows?)
+
+ find_path(_GSS_INCLUDE_DIR
+ NAMES
+ "gssapi/gssapi.h"
+ HINTS
+ ${_GSS_ROOT_HINTS}
+ PATH_SUFFIXES
+ include
+ inc
+ )
+
+ if(_GSS_INCLUDE_DIR) #jay, we've found something
+ set(CMAKE_REQUIRED_INCLUDES "${_GSS_INCLUDE_DIR}")
+ check_include_files( "gssapi/gssapi_generic.h;gssapi/gssapi_krb5.h" _GSS_HAVE_MIT_HEADERS)
+
+ if(_GSS_HAVE_MIT_HEADERS)
+ set(GSS_FLAVOUR "MIT")
+ else()
+ # prevent compiling the header - just check if we can include it
+ set(CMAKE_REQUIRED_DEFINITIONS "-D__ROKEN_H__")
+ check_include_file( "roken.h" _GSS_HAVE_ROKEN_H)
+
+ check_include_file( "heimdal/roken.h" _GSS_HAVE_HEIMDAL_ROKEN_H)
+ if(_GSS_HAVE_ROKEN_H OR _GSS_HAVE_HEIMDAL_ROKEN_H)
+ set(GSS_FLAVOUR "Heimdal")
+ endif()
+ set(CMAKE_REQUIRED_DEFINITIONS "")
+ endif()
+ else()
+ # I'm not convienced if this is the right way but this is what autotools do at the moment
+ find_path(_GSS_INCLUDE_DIR
+ NAMES
+ "gssapi.h"
+ HINTS
+ ${_GSS_ROOT_HINTS}
+ PATH_SUFFIXES
+ include
+ inc
+ )
+
+ if(_GSS_INCLUDE_DIR)
+ set(GSS_FLAVOUR "Heimdal")
+ endif()
+ endif()
+
+ # if we have headers, check if we can link libraries
+ if(GSS_FLAVOUR)
+ set(_GSS_LIBDIR_SUFFIXES "")
+ set(_GSS_LIBDIR_HINTS ${_GSS_ROOT_HINTS})
+ get_filename_component(_GSS_CALCULATED_POTENTIAL_ROOT "${_GSS_INCLUDE_DIR}" PATH)
+ list(APPEND _GSS_LIBDIR_HINTS ${_GSS_CALCULATED_POTENTIAL_ROOT})
+
+ if(WIN32)
+ if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+ list(APPEND _GSS_LIBDIR_SUFFIXES "lib/AMD64")
+ if(GSS_FLAVOUR STREQUAL "MIT")
+ set(_GSS_LIBNAME "gssapi64")
+ else()
+ set(_GSS_LIBNAME "libgssapi")
+ endif()
+ else()
+ list(APPEND _GSS_LIBDIR_SUFFIXES "lib/i386")
+ if(GSS_FLAVOUR STREQUAL "MIT")
+ set(_GSS_LIBNAME "gssapi32")
+ else()
+ set(_GSS_LIBNAME "libgssapi")
+ endif()
+ endif()
+ else()
+ list(APPEND _GSS_LIBDIR_SUFFIXES "lib;lib64") # those suffixes are not checked for HINTS
+ if(GSS_FLAVOUR STREQUAL "MIT")
+ set(_GSS_LIBNAME "gssapi_krb5")
+ else()
+ set(_GSS_LIBNAME "gssapi")
+ endif()
+ endif()
+
+ find_library(_GSS_LIBRARIES
+ NAMES
+ ${_GSS_LIBNAME}
+ HINTS
+ ${_GSS_LIBDIR_HINTS}
+ PATH_SUFFIXES
+ ${_GSS_LIBDIR_SUFFIXES}
+ )
+
+ endif()
+
+ endif()
+else()
+ if(_GSS_PKG_${_MIT_MODNAME}_VERSION)
+ set(GSS_FLAVOUR "MIT")
+ set(_GSS_VERSION _GSS_PKG_${_MIT_MODNAME}_VERSION)
+ else()
+ set(GSS_FLAVOUR "Heimdal")
+ set(_GSS_VERSION _GSS_PKG_${_MIT_HEIMDAL}_VERSION)
+ endif()
+endif()
+
+set(GSS_INCLUDE_DIR ${_GSS_INCLUDE_DIR})
+set(GSS_LIBRARIES ${_GSS_LIBRARIES})
+set(GSS_LINK_DIRECTORIES ${_GSS_LINK_DIRECTORIES})
+set(GSS_LINKER_FLAGS ${_GSS_LINKER_FLAGS})
+set(GSS_COMPILER_FLAGS ${_GSS_COMPILER_FLAGS})
+set(GSS_VERSION ${_GSS_VERSION})
+
+if(GSS_FLAVOUR)
+
+ if(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "Heimdal")
+ if(CMAKE_SIZEOF_VOID_P EQUAL 8)
+ set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.amd64.manifest")
+ else()
+ set(HEIMDAL_MANIFEST_FILE "Heimdal.Application.x86.manifest")
+ endif()
+
+ if(EXISTS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}")
+ file(STRINGS "${GSS_INCLUDE_DIR}/${HEIMDAL_MANIFEST_FILE}" heimdal_version_str
+ REGEX "^.*version=\"[0-9]\\.[^\"]+\".*$")
+
+ string(REGEX MATCH "[0-9]\\.[^\"]+"
+ GSS_VERSION "${heimdal_version_str}")
+ endif()
+
+ if(NOT GSS_VERSION)
+ set(GSS_VERSION "Heimdal Unknown")
+ endif()
+ elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "MIT")
+ get_filename_component(_MIT_VERSION "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos\\SDK\\CurrentVersion;VersionString]" NAME CACHE)
+ if(WIN32 AND _MIT_VERSION)
+ set(GSS_VERSION "${_MIT_VERSION}")
+ else()
+ set(GSS_VERSION "MIT Unknown")
+ endif()
+ endif()
+endif()
+
+
+include(FindPackageHandleStandardArgs)
+
+set(_GSS_REQUIRED_VARS GSS_LIBRARIES GSS_FLAVOUR)
+
+find_package_handle_standard_args(GSS
+ REQUIRED_VARS
+ ${_GSS_REQUIRED_VARS}
+ VERSION_VAR
+ GSS_VERSION
+ FAIL_MESSAGE
+ "Could NOT find GSS, try to set the path to GSS root folder in the system variable GSS_ROOT_DIR"
+)
+
+mark_as_advanced(GSS_INCLUDE_DIR GSS_LIBRARIES)
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