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kde-extraapps/kgpg/cmake/modules/FindGpgme.cmake
Ivailo Monev 4e89c8182b removed KdepimLibs dependency of kgpg
2014-11-23 18:39:17 +00:00

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CMake
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# Copied from KDE
# http://websvn.kde.org/trunk/KDE/kdepimlibs/cmake/modules/FindGpgme.cmake
# Added: include (MacroBoolTo01)
# Removed: macro_log_feature() call
# - Try to find the gpgme library
#
# Algorithm:
# - Windows:
# On Windows, there's three gpgme variants: gpgme{,-glib,-qt}.
# - The variant used determines the event loop integration possible:
# - gpgme: no event loop integration possible, only synchronous operations supported
# - gpgme-glib: glib event loop integration possible, only asynchronous operations supported
# - gpgme-qt: qt event loop integration possible, only asynchronous operations supported
# - GPGME_{VANILLA,GLIB,QT}_{FOUND,LIBRARIES} will be set for each of the above
# - GPGME_INCLUDES is the same for all of the above
# - GPGME_FOUND is set if any of the above was found
# - *nix:
# There's also three variants: gpgme{,-pthread,-pth}.
# - The variant used determines the multithreaded use possible:
# - gpgme: no multithreading support available
# - gpgme-pthread: multithreading available using POSIX threads
# - gpgme-pth: multithreading available using GNU PTH (cooperative multithreading)
# - GPGME_{VANILLA,PTH,PTHREAD}_{FOUND,LIBRARIES} will be set for each of the above
# - GPGME_INCLUDES is the same for all of the above
# - GPGME_FOUND is set if any of the above was found
#
# GPGME_LIBRARY_DIR - the directory where the libraries are located
#
# THIS IS ALMOST A 1:1 COPY OF FindAssuan.cmake in kdepim.
# Any changes here likely apply there, too.
#
# do away with crappy condition repetition on else/endfoo
set( CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS_gpgme_saved ${CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS} )
set( CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true )
#if this is built-in, please replace, if it isn't, export into a MacroToBool.cmake of it's own
macro( macro_bool_to_bool FOUND_VAR )
foreach( _current_VAR ${ARGN} )
if ( ${FOUND_VAR} )
set( ${_current_VAR} TRUE )
else()
set( ${_current_VAR} FALSE )
endif()
endforeach()
endmacro()
include (MacroEnsureVersion)
include (MacroBoolTo01)
if ( WIN32 )
# On Windows, we don't have a gpgme-config script, so we need to
# look for the stuff ourselves:
# in cmake, AND and OR have the same precedence, there's no
# subexpressions, and expressions are evaluated short-circuit'ed
# IOW: CMake if() suxx.
# Starting with CMake 2.6.3 you can group if expressions with (), but we
# don't require 2.6.3 but 2.6.2, we can't use it. Alex
set( _seem_to_have_cached_gpgme false )
if ( GPGME_INCLUDES )
if ( GPGME_VANILLA_LIBRARIES OR GPGME_QT_LIBRARIES OR GPGME_GLIB_LIBRARIES )
set( _seem_to_have_cached_gpgme true )
endif()
endif()
if ( _seem_to_have_cached_gpgme )
macro_bool_to_bool( GPGME_VANILLA_LIBRARIES GPGME_VANILLA_FOUND )
macro_bool_to_bool( GPGME_GLIB_LIBRARIES GPGME_GLIB_FOUND )
macro_bool_to_bool( GPGME_QT_LIBRARIES GPGME_QT_FOUND )
# this would have been preferred:
#set( GPGME_*_FOUND macro_bool_to_bool(GPGME_*_LIBRARIES) )
if ( GPGME_VANILLA_FOUND OR GPGME_GLIB_FOUND OR GPGME_QT_FOUND )
set( GPGME_FOUND true )
else()
set( GPGME_FOUND false )
endif()
else()
# is this needed, of just unreflected cut'n'paste?
# this isn't a KDE library, after all!
if( NOT KDEWIN_FOUND )
find_package( KDEWIN REQUIRED )
endif()
set( GPGME_FOUND false )
set( GPGME_VANILLA_FOUND false )
set( GPGME_GLIB_FOUND false )
set( GPGME_QT_FOUND false )
find_path( GPGME_INCLUDES gpgme.h
${CMAKE_INCLUDE_PATH}
${CMAKE_INSTALL_PREFIX}/include
)
find_library( _gpgme_vanilla_library NAMES gpgme libgpgme gpgme-11 libgpgme-11
PATHS
${CMAKE_LIBRARY_PATH}
${CMAKE_INSTALL_PREFIX}/lib
)
find_library( _gpgme_glib_library NAMES gpgme-glib libgpgme-glib gpgme-glib-11 libgpgme-glib-11
PATHS
${CMAKE_LIBRARY_PATH}
${CMAKE_INSTALL_PREFIX}/lib
)
find_library( _gpgme_qt_library NAMES gpgme-qt libgpgme-qt gpgme-qt-11 libgpgme-qt-11
PATHS
${CMAKE_LIBRARY_PATH}
${CMAKE_INSTALL_PREFIX}/lib
)
find_library( _gpg_error_library NAMES gpg-error libgpg-error gpg-error-0 libgpg-error-0
PATHS
${CMAKE_LIBRARY_PATH}
${CMAKE_INSTALL_PREFIX}/lib
)
set( GPGME_INCLUDES ${GPGME_INCLUDES} )
if ( _gpgme_vanilla_library AND _gpg_error_library )
set( GPGME_VANILLA_LIBRARIES ${_gpgme_vanilla_library} ${_gpg_error_library} )
set( GPGME_VANILLA_FOUND true )
set( GPGME_FOUND true )
endif()
if ( _gpgme_glib_library AND _gpg_error_library )
set( GPGME_GLIB_LIBRARIES ${_gpgme_glib_library} ${_gpg_error_library} )
set( GPGME_GLIB_FOUND true )
set( GPGME_FOUND true )
endif()
if ( _gpgme_qt_library AND _gpg_error_library )
set( GPGME_QT_LIBRARIES ${_gpgme_qt_library} ${_gpg_error_library} )
set( GPGME_QT_FOUND true )
set( GPGME_FOUND true )
endif()
endif()
# these are Unix-only:
set( GPGME_PTHREAD_FOUND false )
set( GPGME_PTH_FOUND false )
set( HAVE_GPGME_PTHREAD 0 )
set( HAVE_GPGME_PTH 0 )
macro_bool_to_01( GPGME_FOUND HAVE_GPGME )
macro_bool_to_01( GPGME_VANILLA_FOUND HAVE_GPGME_VANILLA )
macro_bool_to_01( GPGME_GLIB_FOUND HAVE_GPGME_GLIB )
macro_bool_to_01( GPGME_QT_FOUND HAVE_GPGME_QT )
else() # not WIN32
# On *nix, we have the gpgme-config script which can tell us all we
# need to know:
# see WIN32 case for an explanation of what this does:
set( _seem_to_have_cached_gpgme false )
if ( GPGME_INCLUDES )
if ( GPGME_VANILLA_LIBRARIES OR GPGME_PTHREAD_LIBRARIES OR GPGME_PTH_LIBRARIES )
set( _seem_to_have_cached_gpgme true )
endif()
endif()
if ( _seem_to_have_cached_gpgme )
macro_bool_to_bool( GPGME_VANILLA_LIBRARIES GPGME_VANILLA_FOUND )
macro_bool_to_bool( GPGME_PTHREAD_LIBRARIES GPGME_PTHREAD_FOUND )
macro_bool_to_bool( GPGME_PTH_LIBRARIES GPGME_PTH_FOUND )
if ( GPGME_VANILLA_FOUND OR GPGME_PTHREAD_FOUND OR GPGME_PTH_FOUND )
set( GPGME_FOUND true )
else()
set( GPGME_FOUND false )
endif()
else()
set( GPGME_FOUND false )
set( GPGME_VANILLA_FOUND false )
set( GPGME_PTHREAD_FOUND false )
set( GPGME_PTH_FOUND false )
find_program( _GPGMECONFIG_EXECUTABLE NAMES gpgme-config )
# if gpgme-config has been found
if ( _GPGMECONFIG_EXECUTABLE )
message( STATUS "Found gpgme-config at ${_GPGMECONFIG_EXECUTABLE}" )
exec_program( ${_GPGMECONFIG_EXECUTABLE} ARGS --version OUTPUT_VARIABLE GPGME_VERSION )
set( _GPGME_MIN_VERSION "1.0.0" )
macro_ensure_version( ${_GPGME_MIN_VERSION} ${GPGME_VERSION} _GPGME_INSTALLED_VERSION_OK )
if ( NOT _GPGME_INSTALLED_VERSION_OK )
message( STATUS "The installed version of gpgme is too old: ${GPGME_VERSION} (required: >= ${_GPGME_MIN_VERSION})" )
else()
message( STATUS "Found gpgme v${GPGME_VERSION}, checking for flavours..." )
exec_program( ${_GPGMECONFIG_EXECUTABLE} ARGS --libs OUTPUT_VARIABLE _gpgme_config_vanilla_libs RETURN_VALUE _ret )
if ( _ret )
set( _gpgme_config_vanilla_libs )
endif()
exec_program( ${_GPGMECONFIG_EXECUTABLE} ARGS --thread=pthread --libs OUTPUT_VARIABLE _gpgme_config_pthread_libs RETURN_VALUE _ret )
if ( _ret )
set( _gpgme_config_pthread_libs )
endif()
exec_program( ${_GPGMECONFIG_EXECUTABLE} ARGS --thread=pth --libs OUTPUT_VARIABLE _gpgme_config_pth_libs RETURN_VALUE _ret )
if ( _ret )
set( _gpgme_config_pth_libs )
endif()
# append -lgpg-error to the list of libraries, if necessary
foreach ( _flavour vanilla pthread pth )
if ( _gpgme_config_${_flavour}_libs AND NOT _gpgme_config_${_flavour}_libs MATCHES "lgpg-error" )
set( _gpgme_config_${_flavour}_libs "${_gpgme_config_${_flavour}_libs} -lgpg-error" )
endif()
endforeach()
if ( _gpgme_config_vanilla_libs OR _gpgme_config_pthread_libs OR _gpgme_config_pth_libs )
exec_program( ${_GPGMECONFIG_EXECUTABLE} ARGS --cflags OUTPUT_VARIABLE _GPGME_CFLAGS )
if ( _GPGME_CFLAGS )
string( REGEX REPLACE "(\r?\n)+$" " " _GPGME_CFLAGS "${_GPGME_CFLAGS}" )
string( REGEX REPLACE " *-I" ";" GPGME_INCLUDES "${_GPGME_CFLAGS}" )
endif()
foreach ( _flavour vanilla pthread pth )
if ( _gpgme_config_${_flavour}_libs )
set( _gpgme_library_dirs )
set( _gpgme_library_names )
string( TOUPPER "${_flavour}" _FLAVOUR )
string( REGEX REPLACE " +" ";" _gpgme_config_${_flavour}_libs "${_gpgme_config_${_flavour}_libs}" )
foreach( _flag ${_gpgme_config_${_flavour}_libs} )
if ( "${_flag}" MATCHES "^-L" )
string( REGEX REPLACE "^-L" "" _dir "${_flag}" )
file( TO_CMAKE_PATH "${_dir}" _dir )
set( _gpgme_library_dirs ${_gpgme_library_dirs} "${_dir}" )
elseif( "${_flag}" MATCHES "^-l" )
string( REGEX REPLACE "^-l" "" _name "${_flag}" )
set( _gpgme_library_names ${_gpgme_library_names} "${_name}" )
endif()
endforeach()
set( GPGME_${_FLAVOUR}_FOUND true )
foreach( _name ${_gpgme_library_names} )
set( _gpgme_${_name}_lib )
# if -L options were given, look only there
if ( _gpgme_library_dirs )
find_library( _gpgme_${_name}_lib NAMES ${_name} PATHS ${_gpgme_library_dirs} NO_DEFAULT_PATH )
endif()
# if not found there, look in system directories
if ( NOT _gpgme_${_name}_lib )
find_library( _gpgme_${_name}_lib NAMES ${_name} )
endif()
# if still not found, then the whole flavour isn't found
if ( NOT _gpgme_${_name}_lib )
if ( GPGME_${_FLAVOUR}_FOUND )
set( GPGME_${_FLAVOUR}_FOUND false )
set( _not_found_reason "dependant library ${_name} wasn't found" )
endif()
endif()
set( GPGME_${_FLAVOUR}_LIBRARIES ${GPGME_${_FLAVOUR}_LIBRARIES} "${_gpgme_${_name}_lib}" )
endforeach()
#check_c_library_exists_explicit( gpgme gpgme_check_version "${_GPGME_CFLAGS}" "${GPGME_LIBRARIES}" GPGME_FOUND )
if ( GPGME_${_FLAVOUR}_FOUND )
message( STATUS " Found flavour '${_flavour}', checking whether it's usable...yes" )
else()
message( STATUS " Found flavour '${_flavour}', checking whether it's usable...no" )
message( STATUS " (${_not_found_reason})" )
endif()
endif()
endforeach( _flavour )
# ensure that they are cached
# This comment above doesn't make sense, the four following lines seem to do nothing. Alex
set( GPGME_INCLUDES ${GPGME_INCLUDES} )
set( GPGME_VANILLA_LIBRARIES ${GPGME_VANILLA_LIBRARIES} )
set( GPGME_PTHREAD_LIBRARIES ${GPGME_PTHREAD_LIBRARIES} )
set( GPGME_PTH_LIBRARIES ${GPGME_PTH_LIBRARIES} )
if ( GPGME_VANILLA_FOUND OR GPGME_PTHREAD_FOUND OR GPGME_PTH_FOUND )
set( GPGME_FOUND true )
else()
set( GPGME_FOUND false )
endif()
endif()
endif()
endif()
endif()
# these are Windows-only:
set( GPGME_GLIB_FOUND false )
set( GPGME_QT_FOUND false )
set( HAVE_GPGME_GLIB 0 )
set( HAVE_GPGME_QT 0 )
macro_bool_to_01( GPGME_FOUND HAVE_GPGME )
macro_bool_to_01( GPGME_VANILLA_FOUND HAVE_GPGME_VANILLA )
macro_bool_to_01( GPGME_PTHREAD_FOUND HAVE_GPGME_PTHREAD )
macro_bool_to_01( GPGME_PTH_FOUND HAVE_GPGME_PTH )
endif() # WIN32 | Unix
set( _gpgme_flavours "" )
if ( GPGME_VANILLA_FOUND )
set( _gpgme_flavours "${_gpgme_flavours} vanilla" )
endif()
if ( GPGME_GLIB_FOUND )
set( _gpgme_flavours "${_gpgme_flavours} Glib" )
endif()
if ( GPGME_QT_FOUND )
set( _gpgme_flavours "${_gpgme_flavours} Qt" )
endif()
if ( GPGME_PTHREAD_FOUND )
set( _gpgme_flavours "${_gpgme_flavours} pthread" )
endif()
if ( GPGME_PTH_FOUND )
set( _gpgme_flavours "${_gpgme_flavours} pth" )
endif()
# determine the library in one of the found flavours, can be reused e.g. by FindQgpgme.cmake, Alex
foreach(_currentFlavour vanilla glib qt pth pthread)
if(NOT GPGME_LIBRARY_DIR)
get_filename_component(GPGME_LIBRARY_DIR "${_gpgme_${_currentFlavour}_lib}" PATH)
endif()
endforeach()
if ( NOT Gpgme_FIND_QUIETLY )
if ( GPGME_FOUND )
message( STATUS "Usable gpgme flavours found: ${_gpgme_flavours}" )
else()
message( STATUS "No usable gpgme flavours found." )
endif()
macro_bool_to_bool( Gpgme_FIND_REQUIRED _req )
if ( WIN32 )
set( _gpgme_homepage "http://www.gpg4win.org" )
else()
set( _gpgme_homepage "http://www.gnupg.org/related_software/gpgme" )
endif()
else()
if ( Gpgme_FIND_REQUIRED AND NOT GPGME_FOUND )
message( FATAL_ERROR "Did not find GPGME" )
endif()
endif()
set( CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS_gpgme_saved )
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