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CMake: Find HDF5 header we can safely include for other checks

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Peter Hill 2023-10-06 16:39:39 +01:00
parent 74141e774c
commit e6f68f7f53
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2 changed files with 60 additions and 18 deletions
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55
cmake/check_hdf5.cmake Normal file
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@ -0,0 +1,55 @@
# Work out which HDF5 config header we can safely include
#
# We'd like to just use H5public.h, but if HDF5 was built against MPI, this
# might require us to have found MPI already. The next best file is H5pubconf.h,
# which actually has all the feature macros we want to check, but some
# distributions rename this for multiarch, so we've got to check some different
# names.
#
# HDF5_INCLUDE_DIR should already be set before calling this
function(check_hdf5_feature_header)
if (_H5_FEATURE_HEADER)
return()
endif()
include(CheckIncludeFile)
set(CMAKE_REQUIRED_INCLUDES ${HDF5_INCLUDE_DIR})
message(STATUS "Checking for HDF5 config header")
foreach(_h5_header "H5public.h" "H5pubconf.h" "H5pubconf-64.h" "H5pubconf-32.h")
check_include_file(${_h5_header} _can_include_h5_header)
if (_can_include_h5_header)
message(STATUS "Using ${_h5_header} to check for feature macros")
set(_H5_FEATURE_HEADER ${_h5_header} CACHE INTERNAL "")
return()
endif()
endforeach()
message(FATAL_ERROR "Could not include any HDF5 config headers")
endfunction()
# Check for an HDF5 feature macro named FEATURE and store the result in VAR
#
# This just wraps `check_c_source_compiles` but ensures we use the correct header
function(check_hdf5_feature VAR FEATURE)
if (NOT _H5_FEATURE_HEADER)
check_hdf5_feature_header()
endif()
include(CheckCSourceCompiles)
set(CMAKE_REQUIRED_INCLUDES ${HDF5_INCLUDE_DIR})
message(STATUS "Checking for ${FEATURE}")
check_c_source_compiles("
#include <${_H5_FEATURE_HEADER}>
#if !${FEATURE}
#error
#endif
int main() {}"
_has_${FEATURE})
set(${VAR} ${_has_${FEATURE}} PARENT_SCOPE)
endfunction()

23
cmake/dependencies.cmake
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@ -304,18 +304,13 @@ IF(USE_HDF5)
INCLUDE_DIRECTORIES(${HAVE_HDF5_H})
ENDIF(NOT HAVE_HDF5_H)
set (CMAKE_REQUIRED_INCLUDES ${HDF5_INCLUDE_DIR})
include(cmake/check_hdf5.cmake)
# Check to ensure that HDF5 was built with zlib.
# This needs to be near the beginning since we
# need to know whether to add "-lz" to the symbol
# tests below.
CHECK_C_SOURCE_COMPILES("#include <H5pubconf.h>
#if !H5_HAVE_ZLIB_H
#error
#endif
int main() {
int x = 1;}" HAVE_HDF5_ZLIB)
check_hdf5_feature(HAVE_HDF5_ZLIB H5_HAVE_ZLIB_H)
IF(NOT HAVE_HDF5_ZLIB)
MESSAGE(FATAL_ERROR "HDF5 was built without zlib. Rebuild HDF5 with zlib.")
ELSE()
@ -332,16 +327,8 @@ IF(USE_HDF5)
MESSAGE(STATUS "HDF5 has zlib.")
ENDIF()
#Check to see if H5Z_SZIP exists in HDF5_Libraries. If so, we must use szip library.
CHECK_C_SOURCE_COMPILES("#include <H5pubconf.h>
#if !H5_HAVE_FILTER_SZIP
#error
#endif
int main() {
int x = 1;}" USE_HDF5_SZIP)
IF(USE_HDF5_SZIP)
SET(HAVE_H5Z_SZIP yes )
ENDIF()
# Check to see if H5Z_SZIP exists in HDF5_Libraries. If so, we must use szip library.
check_hdf5_feature(HAVE_H5Z_SZIP H5_HAVE_FILTER_SZIP)
####
# Check to see if HDF5 library is 1.10.6 or greater.
@ -651,4 +638,4 @@ ENDIF()
################################
IF(ENABLE_DOXYGEN)
FIND_PACKAGE(Doxygen REQUIRED)
ENDIF()
ENDIF()