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# - Default settings for the build
include (UseCompVer)
is_compiler_gcc_compatible ()
include(TestCXXAcceptsFlag)
macro (opm_defaults opm)
message("Processing 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." ${_precomp_def})
mark_as_advanced (PRECOMPILE_HEADERS)
if (NOT PRECOMPILE_HEADERS)
message (STATUS "Precompiled headers: disabled")
endif(NOT PRECOMPILE_HEADERS)
# Use of OpenMP is considered experimental
set (USE_OPENMP_DEFAULT ON)
# if we are on a system where CMake 2.6 is the default (Hi RHEL 6!),
# the configuration files for Boost will trip up the library paths
# (look for /usr/lib64/lib64/ in the log) when used with FindBoost
# module bundled with CMake 2.8. this can be circumvented by turning
# off config mode probing if we have not explicitly specified a
# directory to look for it. for more details, see
# <http://stackoverflow.com/questions/9948375/cmake-find-package-succeeds-but-returns-wrong-path>
if (NOT BOOST_ROOT)
set (Boost_NO_BOOST_CMAKE ON)
endif (NOT BOOST_ROOT)
endmacro (opm_defaults opm)
# overwrite a cache entry's value, but keep docstring and type
# if not already in cache, then does nothing
function (update_cache name)
get_property (_help CACHE "${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)
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