opm-simulators/cmake/Modules/UseDuneVer.cmake
Roland Kaufmann 821a53bfbb Probe DUNE module version number from installation
Figure out where the closest dune.module is, and parse it for
information. The defines are added to config.h, so that our code
may behave differently for various versions available.

It actually works for opm-core 1.0 as well, but don't tell anyone;
we rather want people to use opm/core/version.h instead.

If a module has been backported and installed to a directory which
also contains the version number, e.g. /usr/include/dune-2.3, to
avoid clashing with an existing version in /usr/include, then this
part is now stripped from the include directory and added back to
the lib directory where we are looking for dune.module
2013-08-14 23:39:06 +02:00

105 lines
4.0 KiB
CMake

# - Find version of a DUNE package
#
# Synopsis:
#
# find_dune_version (suite module)
#
# where:
# suite Name of the suite; this should always be "dune"
# module Name of the module, e.g. "common"
#
# Finds the content of DUNE_${MODULE}_VERSION_{MAJOR,MINOR,REVISION}
# from the installation.
#
# Add these variables to ${project}_CONFIG_IMPL_VARS in CMakeLists.txt
# if you need these in the code.
include (UseMultiArch)
function (find_dune_version suite module)
# the _ROOT variable may or may not be set, but the include
# variable should always be; get the prefix from the header path
# if we have a multilib installation where the package maintainer
# have installed it in e.g. /usr/include/dune-2.2/dune/istl, then
# stash this extra indirection and add it back later in lib/
set (_inc_path "${${suite}-${module}_INCLUDE_DIR}")
file (TO_CMAKE_PATH _inc_path "${_inc_path}")
set (_multilib_regexp "(.*)/include(/${suite}[^/]+)?")
if (_inc_path MATCHES "${_multilib_regexp}")
set (_orig_inc "${_inc_path}")
string (REGEX REPLACE "${_multilib_regexp}" "\\1" _inc_path "${_orig_inc}")
# only get the second group if it is really there (there is
# probably a better way to do this in CMake)
if ("${_inc_path}/include" STREQUAL "${_orig_inc}")
set (_multilib "")
else ()
string (REGEX REPLACE "${_multilib_regexp}" "\\2" _multilib "${_orig_inc}")
endif ()
else ()
set (_multilib "")
endif ()
# some modules does not have a library, use the directory of the
# header files to find what would be the library dir.
if (NOT ${suite}-${module}_LIBRARY)
# this suffix is gotten from UseMultiArch.cmake
set (_lib_path "${_inc_path}/${CMAKE_INSTALL_LIBDIR}")
else ()
get_filename_component (_lib_path "${${suite}-${module}_LIBRARY}" PATH)
endif ()
# if we have a source tree, dune.module is available there
set (_dune_mod "${_inc_path}/dune.module")
if (NOT EXISTS "${_dune_mod}")
set (_dune_mod "")
endif ()
if (NOT _dune_mod)
# look for the build tree; if we found the library, then the
# dune.module file should be in a sub-directory
get_filename_component (_immediate "${_lib_path}" NAME)
if ("${_immediate}" STREQUAL "${CMAKE_LIBRARY_ARCHITECTURE}")
# remove multi-arch part of the library path to get parent
get_filename_component (_lib_path "${_lib_path}" PATH)
endif ()
set (_dune_mod "${_lib_path}${_multilib}/dunecontrol/${suite}-${module}/dune.module")
if (NOT EXISTS "${_dune_mod}")
# use the name itself as a flag for whether it was found or not
set (_dune_mod "")
endif ()
endif ()
# if it is not available, it may make havoc having empty defines in the source
# code later, so we bail out early
if (${suite}-${module}_FIND_REQUIRED AND NOT _dune_mod)
message (FATAL_ERROR "Failed to locate dune.module for ${suite}-${module}")
endif ()
# parse the file for the Version: field
set (_ver_regexp "[ ]*Version:[ ]*([0-9]+)\\.([0-9]+)(.*)")
file (STRINGS "${_dune_mod}" _ver_field REGEX "${_ver_regexp}")
string (REGEX REPLACE "${_ver_regexp}" "\\1" _major "${_ver_field}")
string (REGEX REPLACE "${_ver_regexp}" "\\2" _minor "${_ver_field}")
string (REGEX REPLACE "${_ver_regexp}" "\\3" _revision "${_ver_field}")
# revision may or may not be there
set (_rev_regexp "\\.([0-9]+).*")
if (_revision MATCHES "${_rev_regexp}")
string (REGEX REPLACE "${_rev_regexp}" "\\1" _revision "${_revision}")
else ()
set (_revision "0")
endif ()
# generate variable for what we have found
string (TOUPPER "${suite}" _SUITE)
string (TOUPPER "${module}" _MODULE)
string (REPLACE "-" "_" _MODULE "${_MODULE}")
if ((NOT DEFINED ${_SUITE}_${_MODULE}_VERSION_MAJOR) AND
(NOT DEFINED ${_SUITE}_${_MODULE}_VERSION_MINOR) AND
(NOT DEFINED ${_SUITE}_${_MODULE}_VERSION_REVISION))
set (${_SUITE}_${_MODULE}_VERSION_MAJOR "${_major}" PARENT_SCOPE)
set (${_SUITE}_${_MODULE}_VERSION_MINOR "${_minor}" PARENT_SCOPE)
set (${_SUITE}_${_MODULE}_VERSION_REVISION "${_revision}" PARENT_SCOPE)
endif ()
endfunction (find_dune_version suite module)