opm-simulators/cmake/Modules/OpmDefaults.cmake
Roland Kaufmann b6c5d3572d Update the CMake cache to reflect current settings
During configuration some of the values for CMake properties (compiler
flags etc.) may be changed either by the user (through command line
parameters or option files), or by the configuration script itself
(setting more aggressive options or detailed debugging for instance).

This change writes many of the relevant values back into the cache so
they are available for introspection (using e.g. ccmake) or when the
rerunning the configuration without specifying all options.
2013-09-24 15:39:46 +02:00

100 lines
3.7 KiB
CMake

# - Default settings for the build
include (UseCompVer)
is_compiler_gcc_compatible ()
include(TestCXXAcceptsFlag)
macro (opm_defaults opm)
# if we are installing a development version (default when checking out of
# VCS), then remember which directories were used when configuring. package
# distribution should disable this option.
option (USE_RUNPATH "Embed original dependency paths in installed library" ON)
if (USE_RUNPATH)
if (CXX_COMPAT_GCC)
check_cxx_accepts_flag ("-Wl,--enable-new-dtags" HAVE_RUNPATH)
if (HAVE_RUNPATH)
list (APPEND ${opm}_LINKER_FLAGS "-Wl,--enable-new-dtags")
endif (HAVE_RUNPATH)
endif ()
# set this to avoid CMake stripping it off again
set (CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
endif (USE_RUNPATH)
# build release by default
if (NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)
set (CMAKE_BUILD_TYPE "Release")
endif (NOT CMAKE_CONFIGURATION_TYPES AND NOT CMAKE_BUILD_TYPE)
# default to building a static library, but let user override
if (DEFINED BUILD_SHARED_LIBS)
if (BUILD_SHARED_LIBS)
set (${opm}_LIBRARY_TYPE SHARED)
else (BUILD_SHARED_LIBS)
set (${opm}_LIBRARY_TYPE STATIC)
endif (BUILD_SHARED_LIBS)
else (DEFINED BUILD_SHARED_LIBS)
set (${opm}_LIBRARY_TYPE STATIC)
endif (DEFINED BUILD_SHARED_LIBS)
# precompile standard headers to speed up compilation
# unfortunately, this functionality is buggy and tends to segfault at
# least up to version 4.7.2, so it should be disabled by default there
set (_precomp_def OFF)
option (PRECOMPILE_HEADERS "Precompile common headers for speed." ${_precomp_def})
mark_as_advanced (PRECOMPILE_HEADERS)
if (NOT PRECOMPILE_HEADERS)
message (STATUS "Precompiled headers: disabled")
endif(NOT PRECOMPILE_HEADERS)
# Use of OpenMP is considered experimental
set (USE_OPENMP_DEFAULT OFF)
# if we are on a system where CMake 2.6 is the default (Hi RHEL 6!),
# the configuration files for Boost will trip up the library paths
# (look for /usr/lib64/lib64/ in the log) when used with FindBoost
# module bundled with CMake 2.8. this can be circumvented by turning
# off config mode probing if we have not explicitly specified a
# directory to look for it. for more details, see
# <http://stackoverflow.com/questions/9948375/cmake-find-package-succeeds-but-returns-wrong-path>
if (NOT BOOST_ROOT)
set (Boost_NO_BOOST_CMAKE ON)
endif (NOT BOOST_ROOT)
endmacro (opm_defaults opm)
# overwrite a cache entry's value, but keep docstring and type
# if not already in cache, then does nothing
function (update_cache name)
get_property (_help CACHE "${name}" PROPERTY HELPSTRING)
get_property (_type CACHE "${name}" PROPERTY TYPE)
if (NOT "${_type}" STREQUAL "")
#message ("Setting ${name} to \"${${name}}\" in cache.")
set ("${name}" "${${name}}" CACHE ${_type} "${_help}" FORCE)
endif ()
endfunction (update_cache name)
# put all compiler options currently set back into the cache, so that
# they can be queried from there (using ccmake for instance)
function (write_back_options)
# build type
update_cache (CMAKE_BUILD_TYPE)
# compilers
set (languages C CXX Fortran)
foreach (language IN LISTS _languages)
if (CMAKE_${language}_COMPILER)
update_cache (CMAKE_${language}_COMPILER)
endif ()
endforeach (language)
# flags (notice use of IN LISTS to get the empty variant)
set (buildtypes "" "_DEBUG" "_RELEASE" "_MINSIZEREL" "_RELWITHDEBINFO")
set (processors "C" "CXX" "Fortran" "EXE_LINKER" "MODULE_LINKER" "SHARED_LINKER")
foreach (processor IN LISTS processors)
foreach (buildtype IN LISTS buildtypes)
if (CMAKE_${processor}_FLAGS${buildtype})
update_cache (CMAKE_${processor}_FLAGS${buildtype})
endif ()
endforeach (buildtype)
endforeach (processor)
endfunction (write_back_options)