Commit e6734068 authored by Will Dicharry's avatar Will Dicharry
Browse files

Add HDF5 find module and select_library_configurations module.

parent fd62a7ca
# - Find HDF5, a library for reading and writing self describing array data.
#
# This module invokes the HDF5 wrapper compiler that should be installed
# alongside HDF5. Depending upon the HDF5 Configuration, the wrapper compiler
# is called either h5cc or h5pcc. If this succeeds, the module will then call
# the compiler with the -show argument to see what flags are used when compiling
# an HDF5 client application.
#
# The module will optionally accept the COMPONENTS argument. If no COMPONENTS
# are specified, then the find module will default to finding only the HDF5 C
# library. If one or more COMPONENTS are specified, the module will attempt to
# find the language bindings for the specified components. Currently, the only
# valid components are C and CXX. The module does not yet support finding the
# Fortran bindings. If the COMPONENTS argument is not given, the module will
# attempt to find only the C bindings.
#
# On UNIX systems, this module will read the variable HDF5_USE_STATIC_LIBRARIES
# to determine whether or not to prefer a static link to a dynamic link for HDF5
# and all of it's dependencies. To use this feature, make sure that the
# HDF5_USE_STATIC_LIBRARIES variable is set before the call to find_package.
#
# To provide the module with a hint about where to find your HDF5 installation,
# you can set the environment variable HDF5_ROOT. The Find module will then
# look in this path when searching for HDF5 executables, paths, and libraries.
#
# In addition to finding the includes and libraries required to compile an HDF5
# client application, this module also makes an effort to find tools that come
# with the HDF5 distribution that may be useful for regression testing.
#
# This module will define the following variables:
# HDF5_INCLUDE_DIR - Location of the hdf5 includes
# HDF5_DEFINITIONS - Required compiler definitions for HDF5
# HDF5_C_LIBRARIES - Required libraries for the HDF5 C bindings.
# HDF5_CXX_LIBRARIES - Required libraries for the HDF5 C++ bindings
# HDF5_LIBRARIES - Required libraries for all requested bindings
# HDF5_FOUND - true if HDF5 was found on the system
# HDF5_LIBRARY_DIRS - the full set of library directories
# HDF5_IS_PARALLEL - Whether or not HDF5 was found with parallel IO support
# HDF5_C_COMPILER_EXECUTABLE - the path to the HDF5 C wrapper compiler
# HDF5_CXX_COMPILER_EXECUTABLE - the path to the HDF5 C++ wrapper compiler
# HDF5_DIFF_EXECUTABLE - the path to the HDF5 dataset comparison tool
# This module is maintained by Will Dicharry <wdicharry@stellarscience.com>.
include(SelectLibraryConfigurations)
include(FindPackageHandleStandardArgs)
# List of the valid HDF5 components
set( HDF5_VALID_COMPONENTS
C
CXX
)
# try to find the HDF5 wrapper compilers
find_program( HDF5_C_COMPILER_EXECUTABLE
NAMES h5cc h5pcc
HINTS ENV HDF5_ROOT
PATH_SUFFIXES bin Bin
DOC "HDF5 Wrapper compiler. Used only to detect HDF5 compile flags." )
mark_as_advanced( HDF5_C_COMPILER_EXECUTABLE )
find_program( HDF5_CXX_COMPILER_EXECUTABLE
NAMES h5c++ h5pc++
HINTS ENV HDF5_ROOT
PATH_SUFFIXES bin Bin
DOC "HDF5 C++ Wrapper compiler. Used only to detect HDF5 compile flags." )
mark_as_advanced( HDF5_CXX_COMPILER_EXECUTABLE )
find_program( HDF5_DIFF_EXECUTABLE
NAMES h5diff
HINTS ENV HDF5_ROOT
PATH_SUFFIXES bin Bin
DOC "HDF5 file differencing tool." )
mark_as_advanced( HDF5_DIFF_EXECUTABLE )
# Invoke the HDF5 wrapper compiler. The compiler return value is stored to the
# return_value argument, the text output is stored to the output variable.
macro( _HDF5_invoke_compiler language output return_value )
if( HDF5_${language}_COMPILER_EXECUTABLE )
exec_program( ${HDF5_${language}_COMPILER_EXECUTABLE}
ARGS -show
OUTPUT_VARIABLE ${output}
RETURN_VALUE ${return_value}
)
if( ${${return_value}} EQUAL 0 )
# do nothing
else()
message( STATUS
"Unable to determine HDF5 ${language} flags from HDF5 wrapper." )
endif()
endif()
endmacro()
# Parse a compile line for definitions, includes, library paths, and libraries.
macro( _HDF5_parse_compile_line
compile_line
include_paths
definitions
library_paths
libraries )
# Match the include paths
string( REGEX MATCHALL "-I([^\" ]+)" include_path_flags
"${compile_line}"
)
foreach( IPATH ${include_path_flags} )
string( REGEX REPLACE "^-I" "" IPATH ${IPATH} )
string( REGEX REPLACE "//" "/" IPATH ${IPATH} )
list( APPEND ${include_paths} ${IPATH} )
endforeach()
# Match the definitions
string( REGEX MATCHALL "-D[^ ]*" definition_flags "${compile_line}" )
foreach( DEF ${definition_flags} )
list( APPEND ${definitions} ${DEF} )
endforeach()
# Match the library paths
string( REGEX MATCHALL "-L([^\" ]+|\"[^\"]+\")" library_path_flags
"${compile_line}"
)
foreach( LPATH ${library_path_flags} )
string( REGEX REPLACE "^-L" "" LPATH ${LPATH} )
string( REGEX REPLACE "//" "/" LPATH ${LPATH} )
list( APPEND ${library_paths} ${LPATH} )
endforeach()
# now search for the library names specified in the compile line (match -l...)
# match only -l's preceded by a space or comma
# this is to exclude directory names like xxx-linux/
string( REGEX MATCHALL "[, ]-l([^\", ]+)" library_name_flags
"${compile_line}" )
# strip the -l from all of the library flags and add to the search list
foreach( LIB ${library_name_flags} )
string( REGEX REPLACE "^[, ]-l" "" LIB ${LIB} )
list( APPEND ${libraries} ${LIB} )
endforeach()
endmacro()
if( HDF5_INCLUDE_DIR AND HDF5_LIBRARIES )
# Do nothing: we already have HDF5_INCLUDE_PATH and HDF5_LIBRARIES in the
# cache, it would be a shame to override them
else()
_HDF5_invoke_compiler( C HDF5_C_COMPILE_LINE HDF5_C_RETURN_VALUE )
_HDF5_invoke_compiler( CXX HDF5_CXX_COMPILE_LINE HDF5_CXX_RETURN_VALUE )
if( NOT HDF5_FIND_COMPONENTS )
set( HDF5_LANGUAGE_BINDINGS "C" )
else()
# add the extra specified components, ensuring that they are valid.
foreach( component ${HDF5_FIND_COMPONENTS} )
list( FIND HDF5_VALID_COMPONENTS ${component} component_location )
if( ${component_location} EQUAL -1 )
message( FATAL_ERROR
"\"${component}\" is not a valid HDF5 component." )
else()
list( APPEND HDF5_LANGUAGE_BINDINGS ${component} )
endif()
endforeach()
endif()
# seed the initial lists of libraries to find with items we know we need
set( HDF5_C_LIBRARY_NAMES_INIT hdf5 hdf5_hl )
set( HDF5_CXX_LIBRARY_NAMES_INIT hdf5_cpp )
foreach( LANGUAGE ${HDF5_LANGUAGE_BINDINGS} )
if( HDF5_${LANGUAGE}_COMPILE_LINE )
_HDF5_parse_compile_line( ${HDF5_${LANGUAGE}_COMPILE_LINE}
HDF5_${LANGUAGE}_INCLUDE_FLAGS
HDF5_${LANGUAGE}_DEFINITIONS
HDF5_${LANGUAGE}_LIBRARY_DIRS
HDF5_${LANGUAGE}_LIBRARY_NAMES
)
# take a guess that the includes may be in the 'include' sibling directory
# of a library directory.
foreach( dir ${HDF5_${LANGUAGE}_LIBRARY_DIRS} )
list( APPEND HDF5_${LANGUAGE}_INCLUDE_FLAGS ${dir}/../include )
endforeach()
endif()
# set the definitions for the language bindings.
list( APPEND HDF5_DEFINITIONS ${HDF5_${LANGUAGE}_DEFINITIONS} )
# find the HDF5 include directories
find_path( HDF5_${LANGUAGE}_INCLUDE_DIR hdf5.h
HINTS
${HDF5_${LANGUAGE}_INCLUDE_FLAGS}
ENV
HDF5_ROOT
PATHS
$ENV{HOME}/.local/include
PATH_SUFFIXES
include
Include
)
mark_as_advanced( HDF5_${LANGUAGE}_INCLUDE_DIR )
list( APPEND HDF5_INCLUDE_DIR ${HDF5_${LANGUAGE}_INCLUDE_DIR} )
set( HDF5_${LANGUAGE}_LIBRARY_NAMES
${HDF5_${LANGUAGE}_LIBRARY_NAMES_INIT}
${HDF5_${LANGUAGE}_LIBRARY_NAMES} )
# find the HDF5 libraries
foreach( LIB ${HDF5_${LANGUAGE}_LIBRARY_NAMES} )
if( UNIX AND HDF5_USE_STATIC_LIBRARIES )
# According to bug 1643 on the CMake bug tracker, this is the
# preferred method for searching for a static library.
# See http://www.cmake.org/Bug/view.php?id=1643. We search
# first for the full static library name, but fall back to a
# generic search on the name if the static search fails.
set( THIS_LIBRARY_SEARCH_DEBUG lib${LIB}d.a ${LIB}d )
set( THIS_LIBRARY_SEARCH_RELEASE lib${LIB}.a ${LIB} )
else()
set( THIS_LIBRARY_SEARCH_DEBUG ${LIB}d )
set( THIS_LIBRARY_SEARCH_RELEASE ${LIB} )
endif()
find_library( HDF5_${LIB}_LIBRARY_DEBUG
NAMES ${THIS_LIBRARY_SEARCH_DEBUG}
HINTS ${HDF5_${LANGUAGE}_LIBRARY_DIRS}
ENV HDF5_ROOT
PATH_SUFFIXES lib Lib )
find_library( HDF5_${LIB}_LIBRARY_RELEASE
NAMES ${THIS_LIBRARY_SEARCH_RELEASE}
HINTS ${HDF5_${LANGUAGE}_LIBRARY_DIRS}
ENV HDF5_ROOT
PATH_SUFFIXES lib Lib )
select_library_configurations( HDF5_${LIB} )
# even though we adjusted the individual library names in
# select_library_configurations, we still need to distinguish
# between debug and release variants because HDF5_LIBRARIES will
# need to specify different lists for debug and optimized builds.
# We can't just use the HDF5_${LIB}_LIBRARY variable (which was set
# up by the selection macro above) because it may specify debug and
# optimized variants for a particular library, but a list of
# libraries is allowed to specify debug and optimized only once.
list( APPEND HDF5_${LANGUAGE}_LIBRARIES_DEBUG
${HDF5_${LIB}_LIBRARY_DEBUG} )
list( APPEND HDF5_${LANGUAGE}_LIBRARIES_RELEASE
${HDF5_${LIB}_LIBRARY_RELEASE} )
endforeach()
list( APPEND HDF5_LIBRARY_DIRS ${HDF5_${LANGUAGE}_LIBRARY_DIRS} )
# Append the libraries for this language binding to the list of all
# required libraries.
list( APPEND HDF5_LIBRARIES_DEBUG
${HDF5_${LANGUAGE}_LIBRARIES_DEBUG} )
list( APPEND HDF5_LIBRARIES_RELEASE
${HDF5_${LANGUAGE}_LIBRARIES_RELEASE} )
endforeach()
# We may have picked up some duplicates in various lists during the above
# process for the language bindings (both the C and C++ bindings depend on
# libz for example). Remove the duplicates.
list( REMOVE_DUPLICATES HDF5_INCLUDE_DIR )
list( REMOVE_DUPLICATES HDF5_LIBRARIES_DEBUG )
list( REMOVE_DUPLICATES HDF5_LIBRARIES_RELEASE )
list( REMOVE_DUPLICATES HDF5_LIBRARY_DIRS )
# Construct the complete list of HDF5 libraries with debug and optimized
# variants when the generator supports them.
if( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
set( HDF5_LIBRARIES
debug ${HDF5_LIBRARIES_DEBUG}
optimized ${HDF5_LIBRARIES_RELEASE} )
else()
set( HDF5_LIBRARIES ${HDF5_LIBRARIES_RELEASE} )
endif()
# If the HDF5 include directory was found, open H5pubconf.h to determine if
# HDF5 was compiled with parallel IO support
if( HDF5_INCLUDE_DIR )
file( STRINGS "${HDF5_INCLUDE_DIR}/H5pubconf.h"
HDF5_HAVE_PARALLEL_DEFINE
REGEX "HAVE_PARALLEL 1" )
if( HDF5_HAVE_PARALLEL_DEFINE )
set( HDF5_IS_PARALLEL TRUE )
else()
set( HDF5_IS_PARALLEL FALSE )
endif()
endif()
set( HDF5_IS_PARALLEL ${HDF5_IS_PARALLEL} CACHE BOOL
"HDF5 library compiled with parallel IO support" )
mark_as_advanced( HDF5_IS_PARALLEL )
endif()
find_package_handle_standard_args( HDF5 DEFAULT_MSG
HDF5_LIBRARIES
HDF5_INCLUDE_DIR
)
mark_as_advanced(
HDF5_INCLUDE_DIR
HDF5_LIBRARIES
HDF5_DEFINTIONS
HDF5_LIBRARY_DIRS
HDF5_C_COMPILER_EXECUTABLE
HDF5_CXX_COMPILER_EXECUTABLE )
# select_library_configurations( basename )
#
# This macro takes a library base name as an argument, and will choose good
# values for basename_LIBRARY, basename_LIBRARIES, basename_LIBRARY_DEBUG, and
# basename_LIBRARY_RELEASE depending on what has been found and set. If only
# basename_LIBRARY_RELEASE is defined, basename_LIBRARY, basename_LIBRARY_DEBUG,
# and basename_LIBRARY_RELEASE will be set to the release value. If only
# basename_LIBRARY_DEBUG is defined, then basename_LIBRARY,
# basename_LIBRARY_DEBUG and basename_LIBRARY_RELEASE will take the debug value.
#
# If the generator supports configuration types, then basename_LIBRARY and
# basename_LIBRARIES will be set with debug and optimized flags specifying the
# library to be used for the given configuration. If no build type has been set
# or the generator in use does not support configuration types, then
# basename_LIBRARY and basename_LIBRARIES will take only the release values.
# This macro was adapted from the FindQt4 CMake module and is maintained by Will
# Dicharry <wdicharry@stellarscience.com>.
# Utility macro to check if one variable exists while another doesn't, and set
# one that doesn't exist to the one that exists.
macro( _set_library_name basename GOOD BAD )
if( ${basename}_LIBRARY_${GOOD} AND NOT ${basename}_LIBRARY_${BAD} )
set( ${basename}_LIBRARY_${BAD} ${${basename}_LIBRARY_${GOOD}} )
set( ${basename}_LIBRARY ${${basename}_LIBRARY_${GOOD}} )
set( ${basename}_LIBRARIES ${${basename}_LIBRARY_${GOOD}} )
endif( ${basename}_LIBRARY_${GOOD} AND NOT ${basename}_LIBRARY_${BAD} )
endmacro( _set_library_name )
macro( select_library_configurations basename )
# if only the release version was found, set the debug to be the release
# version.
_set_library_name( ${basename} RELEASE DEBUG )
# if only the debug version was found, set the release value to be the
# debug value.
_set_library_name( ${basename} DEBUG RELEASE )
if (${basename}_LIBRARY_DEBUG AND ${basename}_LIBRARY_RELEASE )
# if the generator supports configuration types or CMAKE_BUILD_TYPE
# is set, then set optimized and debug options.
if( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
set( ${basename}_LIBRARY
optimized ${${basename}_LIBRARY_RELEASE}
debug ${${basename}_LIBRARY_DEBUG} )
set( ${basename}_LIBRARIES
optimized ${${basename}_LIBRARY_RELEASE}
debug ${${basename}_LIBRARY_DEBUG} )
else( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
# If there are no configuration types or build type, just use
# the release version
set( ${basename}_LIBRARY ${${basename}_LIBRARY_RELEASE} )
set( ${basename}_LIBRARIES ${${basename}_LIBRARY_RELEASE} )
endif( CMAKE_CONFIGURATION_TYPES OR CMAKE_BUILD_TYPE )
endif( ${basename}_LIBRARY_DEBUG AND ${basename}_LIBRARY_RELEASE )
set( ${basename}_LIBRARY ${${basename}_LIBRARY} CACHE FILEPATH
"The ${basename} library" )
if( ${basename}_LIBRARY )
set( ${basename}_FOUND TRUE )
endif( ${basename}_LIBRARY )
mark_as_advanced( ${basename}_LIBRARY
${basename}_LIBRARY_RELEASE
${basename}_LIBRARY_DEBUG
)
endmacro( select_library_configurations )
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