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## Process this file with cmake
#=============================================================================
# NeXus - Neutron & X-ray Common Data Format
#
# CMakeLists for building the NeXus library and applications.
#
# Copyright (C) 2011 Freddie Akeroyd
#
# This library is free software; you can redistribute it and/or modify it
# under the terms of the GNU Lesser General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This library is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# For further information, see <http://www.nexusformat.org>
#
#
#=============================================================================
include(CMakeParseArguments)
#-----------------------------------------------------------------------------
# This module provides some utility functions that are used throughout the
# project for configuration
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# checks a list of possible compiler flags and adds allowed ones
# to the current list
#
function(check_add_c_compiler_flags)
foreach(FLAG ${ARGV})
check_c_compiler_flag(${FLAG} RES)
if (RES)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${FLAG}" PARENT_SCOPE)
endif()
endforeach()
endfunction()
#------------------------------------------------------------------------------
# checks a list of possible compiler flags and adds allowed ones to the current
# list
#
function(check_add_cxx_compiler_flags)
foreach(FLAG ${ARGV})
check_cxx_compiler_flag(${FLAG} RES)
if (RES)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${FLAG}" PARENT_SCOPE)
endif()
endforeach()
endfunction()
#------------------------------------------------------------------------------
# define a HAVE_ if both BUILD_ and _FOUND are defined e.g. creates
# HAVE_HDF5 if both BUILD_HDF5 and HDF5_FOUND are ture
#
function(create_have_vars)
foreach(NAME ${ARGV})
if(${BUILD_${NAME}} AND ${${NAME}_FOUND})
set(HAVE_${NAME} ON PARENT_SCOPE)
else()
set(HAVE_${NAME} OFF PARENT_SCOPE)
endif()
endforeach()
endfunction()
#-----------------------------------------------------------------------------
# Still need to check whether or not this function is required.
#
function(install_pdb target)
# set (OUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/${CMAKE_CFG_INTDIR})
set (OUT_DIR ${CMAKE_CURRENT_BINARY_DIR}/Release)
get_target_property (OUT_NAME ${target} OUTPUT_NAME)
get_filename_component (OUT_BASE_NAME ${OUT_NAME} NAME_WE)
# set(PDB_FILE ${OUT_DIR}/${OUT_BASE_NAME}${CMAKE_DEBUG_POSTFIX}.pdb)
set(PDB_FILE ${OUT_DIR}/${OUT_BASE_NAME}.pdb)
install (FILES ${PDB_FILE} DESTINATION bin COMPONENT Runtime)
endfunction()
#-----------------------------------------------------------------------------
function(search_module_library VAR)
set(multiValueArgs SEARCH_PATH)
set(oneValueArgs)
cmake_parse_arguments(find_module_library "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
if(${VAR}_LIBRARY_DIRS)
#if the user has provided a path we use this one
find_library(LIBFILES NAME ${LIB_NAMES} PATHS ${${VAR}_LIBRARY_DIRS} NO_DEFAULT_PATH)
else()
#if the user has not provided a path we look in the
#system defaults
find_library(LIBFILES NAME ${LIB_NAMES} PATHS)
get_filename_component(${VAR}_LIBRARY_DIRS ${LIBFILES} PATH)
endif()
if(${LIBFILES} MATCHES "LIBFILES-NOTFOUND")
message(STATUS "Could not find ${VAR} runtime binaries")
set(HAVE_${VAR} FALSE PARENT_SCOPE)
endif()
endfunction()
#-----------------------------------------------------------------------------
function(search_module_header VAR)
endfunction()
#-----------------------------------------------------------------------------
#
# Looks for a particular module
#
# The function has three strategies to look for header and library files
# 1.) Check for user provided ${VAR}_INCLUDE_DIRS and ${VAR}_LIBRARY_DIRS
# If the use has provided a location we look there for the libraries.
# The search is exclusive. Only the user provided directories are
# searched. This is to avoid conflicts with other version of a
# particular library which might be installed in the default locations.
# 2.) If the user has not provided any location we firs try pkg-config
# to look for the module. The name of the module is passed via the
# MOD_NAME keywoard argument.
# 3.) If no pkg-config module is available, the function looks in the
# default search paths. It can use the environment variable
# ${MOD_NAME}_ROOT as a path hint.
#
# Arguments:
# Positional arguments:
# VAR ................. prefix used for all output variables
# Results:
# HAVE_{VAR} .......... true if the module was found (false otherwise)
# ${VAR}_INCLUDE_DIRS . holding the header directory
# ${VAR}_LIBRARY_DIRS . directory with runtime libraries
#
#
#
function(find_module VAR )
set(oneValueArgs MOD_NAME)
set(multiValueArgs LIB_NAMES HEADER_NAMES)
cmake_parse_arguments(find_module "" "${oneValueArgs}" "${multiValueArgs}" ${ARGN})
set(LIB_NAMES ${find_module_LIB_NAMES})
set(HEADER_NAMES ${find_module_HEADER_NAMES})
set(MOD_NAME ${find_module_MOD_NAME})
set(HAVE_${VAR} TRUE PARENT_SCOPE)
if(${VAR}_INCLUDE_DIRS OR ${VAR}_LIBRARY_DIRS)
#if the user has provided the search path we have to do nothing but check
#wether or not the library files exist
if(${VAR}_LIBRARY_DIRS)
#if the user has provided a path we use this one
find_library(${VAR}_LIBFILES NAME ${LIB_NAMES}
PATHS ${${VAR}_LIBRARY_DIRS} NO_DEFAULT_PATH)
else()
#if the user has not provided a path we look in the
#system defaults
find_library(${VAR}_LIBFILES NAME ${LIB_NAMES} PATHS)
get_filename_component(${VAR}_LIBRARY_DIRS ${${VAR}_LIBFILES} PATH)
endif()
if(${${VAR}_LIBFILES} MATCHES "${VAR}_LIBFILES-NOTFOUND")
message(STATUS "Could not find ${VAR} runtime binaries")
set(HAVE_${VAR} FALSE PARENT_SCOPE)
endif()
#-------------------------------------------------------------------------
# search for the header file
#-------------------------------------------------------------------------
if(${VAR}_INCLUDE_DIRS)
#just check if the user provided path contains the header file
find_file(${VAR}_HDRFILES NAME ${HEADER_NAMES}
PATHS ${${VAR}_INCLUDE_DIRS} NO_DEFAULT_PATH)
else()
find_file(${VAR}_HDRFILES NAME ${HEADER_NAMES} PATHS)
get_filename_component(${VAR}_INCLUDE_DIRS ${${VAR}_HDRFILES} PATH)
endif()
if(${${VAR}_HDRFILES} MATCHES "${VAR}_HDRFILES-NOTFOUND")
message(STATUS "Could not find ${VAR} header files!")
set(HAVE_${VAR} FALSE PARENT_SCOPE)
endif()
else()
#if the user has not provided any configuration we have to do this manually
if(PKG_CONFIG_FOUND AND MOD_NAME)
#the easy way - we use package config
message(STATUS "pkg-config is searching for : ${MOD_NAME}")
pkg_search_module(${VAR} ${MOD_NAME})
endif()
#if pkg-config was not successful we have to do this the hard way
if(NOT ${VAR}_FOUND)
find_library(${VAR}_LIBFILES NAME ${LIB_NAMES} PATHS ENV ${MOD_NAME}_ROOT)
if(${${VAR}_LIBFILES} MATCHES "${VAR}_LIBFILES-NOTFOUND")
set(STATUS "Could not find ${VAR} runtime binaries!")
set(HAVE_${VAR} FALSE PARENT_SCOPE)
else()
get_filename_component(${VAR}_LIBRARY_DIRS
${${VAR}_LIBFILES} PATH)
message(STATUS "${VAR} libraries: ${${VAR}_LIBFILES}")
endif()
find_file(${VAR}_HDRFILES NAME ${HEADER_NAMES} PATHS ENV ${MOD_NAME}_ROOT)
if(${${VAR}_HDRFILES} MATCHES "${VAR}_HDRFILES-NOTFOUND")
message(STATUS "Could not find ${VAR} header files!")
set(HAVE_${VAR} FALSE PARENT_SCOPE)
else()
get_filename_component(${VAR}_INCLUDE_DIRS ${${VAR}_HDRFILES} PATH)
message(STATUS "${VAR} headers: ${${VAR}_HDRFILES}")
endif()
endif()
endif()
set(${VAR}_INCLUDE_DIRS ${${VAR}_INCLUDE_DIRS} PARENT_SCOPE)
set(${VAR}_LIBRARY_DIRS ${${VAR}_LIBRARY_DIRS} PARENT_SCOPE)
set(${VAR}_LIBFILES ${${VAR}_LIBFILES} PARENT_SCOPE)
endfunction()
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