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353 lines
14 KiB
353 lines
14 KiB
#
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# Copyright by The HDF Group.
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# All rights reserved.
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#
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# This file is part of HDF5. The full HDF5 copyright notice, including
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# terms governing use, modification, and redistribution, is contained in
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# the COPYING file, which can be found at the root of the source code
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# distribution tree, or in https://www.hdfgroup.org/licenses.
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# If you do not have access to either file, you may request a copy from
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# help@hdfgroup.org.
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#
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#
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# This file provides functions for HDF5 specific Fortran support.
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#
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#-------------------------------------------------------------------------------
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enable_language (Fortran)
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set (HDF_PREFIX "H5")
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# Force lowercase Fortran module file names
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if (CMAKE_Fortran_COMPILER_ID STREQUAL "Cray")
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set(CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -ef")
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endif ()
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include (CheckFortranFunctionExists)
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include (CheckFortranSourceRuns)
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include (CheckFortranSourceCompiles)
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# Read source line beginning at the line matching Input:"START" and ending at the line matching Input:"END"
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macro (READ_SOURCE SOURCE_START SOURCE_END RETURN_VAR)
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file (READ "${HDF5_SOURCE_DIR}/m4/aclocal_fc.f90" SOURCE_MASTER)
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string (REGEX MATCH "${SOURCE_START}[\\\t\\\n\\\r[].+]*${SOURCE_END}" SOURCE_CODE ${SOURCE_MASTER})
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set (RETURN_VAR "${SOURCE_CODE}")
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endmacro ()
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set (RUN_OUTPUT_PATH_DEFAULT ${CMAKE_BINARY_DIR})
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# The provided CMake Fortran macros don't provide a general compile/run function
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# so this one is used.
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#-----------------------------------------------------------------------------
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macro (FORTRAN_RUN FUNCTION_NAME SOURCE_CODE RUN_RESULT_VAR1 COMPILE_RESULT_VAR1 RETURN_VAR RETURN_OUTPUT_VAR)
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message (VERBOSE "Detecting Fortran ${FUNCTION_NAME}")
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file (WRITE
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler1.f90
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"${SOURCE_CODE}"
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)
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if (CMAKE_VERSION VERSION_LESS 3.25)
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set (_RUN_OUTPUT_VARIABLE "RUN_OUTPUT_VARIABLE")
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else ()
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set (_RUN_OUTPUT_VARIABLE "RUN_OUTPUT_STDOUT_VARIABLE")
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endif()
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TRY_RUN (RUN_RESULT_VAR COMPILE_RESULT_VAR
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${CMAKE_BINARY_DIR}
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${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeTmp/testFortranCompiler1.f90
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LINK_LIBRARIES "${HDF5_REQUIRED_LIBRARIES}"
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${_RUN_OUTPUT_VARIABLE} OUTPUT_VAR
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)
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set (${RETURN_OUTPUT_VAR} ${OUTPUT_VAR})
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if (${COMPILE_RESULT_VAR})
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set(${RETURN_VAR} ${RUN_RESULT_VAR})
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if (${RUN_RESULT_VAR} MATCHES 0)
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message (VERBOSE "Testing Fortran ${FUNCTION_NAME} - OK")
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file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
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"Determining if the Fortran ${FUNCTION_NAME} exists passed\n"
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)
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else ()
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message (VERBOSE "Testing Fortran ${FUNCTION_NAME} - Fail")
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file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the Fortran ${FUNCTION_NAME} exists failed: ${RUN_RESULT_VAR}\n"
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)
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endif ()
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else ()
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message (VERBOSE "Compiling Fortran ${FUNCTION_NAME} - Fail")
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file (APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
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"Determining if the Fortran ${FUNCTION_NAME} compiles failed: ${COMPILE_RESULT_VAR}\n"
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)
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set(${RETURN_VAR} ${COMPILE_RESULT_VAR})
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endif ()
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endmacro ()
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#-----------------------------------------------------------------------------
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# Check to see C_LONG_DOUBLE is available
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READ_SOURCE("PROGRAM PROG_FC_HAVE_C_LONG_DOUBLE" "END PROGRAM PROG_FC_HAVE_C_LONG_DOUBLE" SOURCE_CODE)
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check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_HAVE_C_LONG_DOUBLE SRC_EXT f90)
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if (${FORTRAN_HAVE_C_LONG_DOUBLE})
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set (${HDF_PREFIX}_FORTRAN_HAVE_C_LONG_DOUBLE 1)
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else ()
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set (${HDF_PREFIX}_FORTRAN_HAVE_C_LONG_DOUBLE 0)
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endif ()
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# Check to see C_LONG_DOUBLE is different from C_DOUBLE
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READ_SOURCE("MODULE type_mod" "END PROGRAM PROG_FC_C_LONG_DOUBLE_EQ_C_DOUBLE" SOURCE_CODE)
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check_fortran_source_compiles (${SOURCE_CODE} FORTRAN_C_LONG_DOUBLE_IS_UNIQUE SRC_EXT f90)
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if (${FORTRAN_C_LONG_DOUBLE_IS_UNIQUE})
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set (${HDF_PREFIX}_FORTRAN_C_LONG_DOUBLE_IS_UNIQUE 1)
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else ()
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set (${HDF_PREFIX}_FORTRAN_C_LONG_DOUBLE_IS_UNIQUE 0)
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endif ()
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## Set the sizeof function for use later in the fortran tests
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if (${HDF_PREFIX}_FORTRAN_HAVE_STORAGE_SIZE)
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set (FC_SIZEOF_A "STORAGE_SIZE(a, c_size_t)/STORAGE_SIZE(c_char_'a',c_size_t)")
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set (FC_SIZEOF_B "STORAGE_SIZE(b, c_size_t)/STORAGE_SIZE(c_char_'a',c_size_t)")
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set (FC_SIZEOF_C "STORAGE_SIZE(c, c_size_t)/STORAGE_SIZE(c_char_'a',c_size_t)")
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elseif (${HDF_PREFIX}_FORTRAN_HAVE_C_SIZEOF)
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set (FC_SIZEOF_A "SIZEOF(a)")
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set (FC_SIZEOF_B "SIZEOF(b)")
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set (FC_SIZEOF_C "SIZEOF(c)")
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else ()
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message (FATAL_ERROR "Fortran compiler requires either intrinsic functions SIZEOF or STORAGE_SIZE")
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endif ()
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#-----------------------------------------------------------------------------
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# Determine the available KINDs for REALs and INTEGERs
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#-----------------------------------------------------------------------------
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READ_SOURCE ("PROGRAM FC_AVAIL_KINDS" "END PROGRAM FC_AVAIL_KINDS" SOURCE_CODE)
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FORTRAN_RUN ("REAL and INTEGER KINDs"
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"${SOURCE_CODE}"
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XX
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YY
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FC_AVAIL_KINDS_RESULT
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PROG_OUTPUT
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)
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# dnl The output from the above program will be:
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# dnl -- LINE 1 -- valid integer kinds (comma separated list)
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# dnl -- LINE 2 -- valid real kinds (comma separated list)
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# dnl -- LINE 3 -- max decimal precision for reals
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# dnl -- LINE 4 -- number of valid integer kinds
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# dnl -- LINE 5 -- number of valid real kinds
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#
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# Convert the string to a list of strings by replacing the carriage return with a semicolon
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string (REGEX REPLACE "[\r\n]+" ";" PROG_OUTPUT "${PROG_OUTPUT}")
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list (GET PROG_OUTPUT 0 pac_validIntKinds)
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list (GET PROG_OUTPUT 1 pac_validRealKinds)
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list (GET PROG_OUTPUT 2 ${HDF_PREFIX}_PAC_FC_MAX_REAL_PRECISION)
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# If the lists are empty then something went wrong.
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if (NOT pac_validIntKinds)
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message (FATAL_ERROR "Failed to find available INTEGER KINDs for Fortran")
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endif ()
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if (NOT pac_validRealKinds)
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message (FATAL_ERROR "Failed to find available REAL KINDs for Fortran")
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endif ()
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if (NOT ${HDF_PREFIX}_PAC_FC_MAX_REAL_PRECISION)
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message (FATAL_ERROR "No output from Fortran decimal precision program")
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endif ()
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set (PAC_FC_ALL_INTEGER_KINDS "\{${pac_validIntKinds}\}")
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set (PAC_FC_ALL_REAL_KINDS "\{${pac_validRealKinds}\}")
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list (GET PROG_OUTPUT 3 NUM_IKIND)
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list (GET PROG_OUTPUT 4 NUM_RKIND)
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set (PAC_FORTRAN_NUM_INTEGER_KINDS "${NUM_IKIND}")
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set (${HDF_PREFIX}_H5CONFIG_F_NUM_IKIND "INTEGER, PARAMETER :: num_ikinds = ${NUM_IKIND}")
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set (${HDF_PREFIX}_H5CONFIG_F_IKIND "INTEGER, DIMENSION(1:num_ikinds) :: ikind = (/${pac_validIntKinds}/)")
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message (STATUS "....NUMBER OF INTEGER KINDS FOUND ${PAC_FORTRAN_NUM_INTEGER_KINDS}")
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message (STATUS "....REAL KINDS FOUND ${PAC_FC_ALL_REAL_KINDS}")
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message (STATUS "....INTEGER KINDS FOUND ${PAC_FC_ALL_INTEGER_KINDS}")
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message (STATUS "....MAX DECIMAL PRECISION ${${HDF_PREFIX}_PAC_FC_MAX_REAL_PRECISION}")
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#-----------------------------------------------------------------------------
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# Determine the available KINDs for REALs and INTEGERs
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#-----------------------------------------------------------------------------
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# **********
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# INTEGERS
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# **********
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string (REGEX REPLACE "," ";" VAR "${pac_validIntKinds}")
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foreach (KIND ${VAR})
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set (PROG_SRC_${KIND}
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"
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PROGRAM main
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USE ISO_C_BINDING
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USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stdout=>OUTPUT_UNIT
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IMPLICIT NONE
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INTEGER (KIND=${KIND}) a
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WRITE(stdout,'(I0)') ${FC_SIZEOF_A}
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END
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"
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)
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FORTRAN_RUN("INTEGER KIND SIZEOF" ${PROG_SRC_${KIND}} XX YY VALIDINTKINDS_RESULT_${KIND} PROG_OUTPUT1)
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string (REGEX REPLACE "[\r\n]+" "" PROG_OUTPUT1 "${PROG_OUTPUT1}")
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set (pack_int_sizeof "${pack_int_sizeof} ${PROG_OUTPUT1},")
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endforeach ()
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if (pack_int_sizeof STREQUAL "")
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message (FATAL_ERROR "Failed to find available INTEGER KINDs for Fortran")
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endif ()
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string (STRIP ${pack_int_sizeof} pack_int_sizeof)
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#Remove trailing comma
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string (REGEX REPLACE ",$" "" pack_int_sizeof "${pack_int_sizeof}")
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#Remove spaces
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string (REGEX REPLACE " " "" pack_int_sizeof "${pack_int_sizeof}")
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set (PAC_FC_ALL_INTEGER_KINDS_SIZEOF "\{${pack_int_sizeof}\}")
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message (VERBOSE "....FOUND SIZEOF for INTEGER KINDs ${PAC_FC_ALL_INTEGER_KINDS_SIZEOF}")
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# **********
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# REALS
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# **********
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string (REGEX REPLACE "," ";" VAR "${pac_validRealKinds}")
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#find the maximum kind of the real
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list (LENGTH VAR LEN_VAR)
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math (EXPR _LEN "${LEN_VAR}-1")
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list (GET VAR ${_LEN} max_real_fortran_kind)
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foreach (KIND ${VAR} )
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set (PROG_SRC2_${KIND}
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"
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PROGRAM main
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USE ISO_C_BINDING
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USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stdout=>OUTPUT_UNIT
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IMPLICIT NONE
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REAL (KIND=${KIND}) a
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WRITE(stdout,'(I0)') ${FC_SIZEOF_A}
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END
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"
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)
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FORTRAN_RUN ("REAL KIND SIZEOF" ${PROG_SRC2_${KIND}} XX YY VALIDREALKINDS_RESULT_${KIND} PROG_OUTPUT2)
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string (REGEX REPLACE "[\r\n]+" "" PROG_OUTPUT2 "${PROG_OUTPUT2}")
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set (pack_real_sizeof "${pack_real_sizeof} ${PROG_OUTPUT2},")
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endforeach ()
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if (pack_real_sizeof STREQUAL "")
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message (FATAL_ERROR "Failed to find available REAL KINDs for Fortran")
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endif ()
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string(STRIP ${pack_real_sizeof} pack_real_sizeof)
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#Remove trailing comma
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string (REGEX REPLACE ",$" "" pack_real_sizeof "${pack_real_sizeof}")
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#Remove spaces
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string (REGEX REPLACE " " "" pack_real_sizeof "${pack_real_sizeof}")
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set (${HDF_PREFIX}_H5CONFIG_F_RKIND_SIZEOF "INTEGER, DIMENSION(1:num_rkinds) :: rkind_sizeof = (/${pack_real_sizeof}/)")
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message (STATUS "....FOUND SIZEOF for REAL KINDs \{${pack_real_sizeof}\}")
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set (PAC_FC_ALL_REAL_KINDS_SIZEOF "\{${pack_real_sizeof}\}")
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#find the maximum kind of the real
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string (REGEX REPLACE "," ";" VAR "${pack_real_sizeof}")
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list (LENGTH VAR LEN_VAR)
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math (EXPR _LEN "${LEN_VAR}-1")
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list (GET VAR ${_LEN} max_real_fortran_sizeof)
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#-----------------------------------------------------------------------------
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# Find sizeof of native kinds
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#-----------------------------------------------------------------------------
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set (PROG_SRC3
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"
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PROGRAM main
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USE ISO_C_BINDING
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USE, INTRINSIC :: ISO_FORTRAN_ENV, ONLY : stdout=>OUTPUT_UNIT
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IMPLICIT NONE
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INTEGER a
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REAL b
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DOUBLE PRECISION c
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WRITE(stdout,*) ${FC_SIZEOF_A}
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WRITE(stdout,*) kind(a)
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WRITE(stdout,*) ${FC_SIZEOF_B}
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WRITE(stdout,*) kind(b)
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WRITE(stdout,*) ${FC_SIZEOF_C}
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WRITE(stdout,*) kind(c)
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END
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"
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)
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FORTRAN_RUN ("SIZEOF NATIVE KINDs" ${PROG_SRC3} XX YY PAC_SIZEOF_NATIVE_KINDS_RESULT PROG_OUTPUT3)
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# dnl The output from the above program will be:
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# dnl -- LINE 1 -- sizeof INTEGER
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# dnl -- LINE 2 -- kind of INTEGER
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# dnl -- LINE 3 -- sizeof REAL
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# dnl -- LINE 4 -- kind of REAL
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# dnl -- LINE 5 -- sizeof DOUBLE PRECISION
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# dnl -- LINE 6 -- kind of DOUBLE PRECISION
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#
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# Convert the string to a list of strings by replacing the carriage return with a semicolon
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string (REGEX REPLACE "[\r\n]+" ";" PROG_OUTPUT3 "${PROG_OUTPUT3}")
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list (GET PROG_OUTPUT3 0 PAC_FORTRAN_NATIVE_INTEGER_SIZEOF)
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list (GET PROG_OUTPUT3 1 PAC_FORTRAN_NATIVE_INTEGER_KIND)
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list (GET PROG_OUTPUT3 2 PAC_FORTRAN_NATIVE_REAL_SIZEOF)
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list (GET PROG_OUTPUT3 3 PAC_FORTRAN_NATIVE_REAL_KIND)
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list (GET PROG_OUTPUT3 4 PAC_FORTRAN_NATIVE_DOUBLE_SIZEOF)
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list (GET PROG_OUTPUT3 5 PAC_FORTRAN_NATIVE_DOUBLE_KIND)
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if (NOT PAC_FORTRAN_NATIVE_INTEGER_SIZEOF)
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message (FATAL_ERROR "Failed to find SIZEOF NATIVE INTEGER KINDs for Fortran")
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endif ()
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if (NOT PAC_FORTRAN_NATIVE_REAL_SIZEOF)
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message (FATAL_ERROR "Failed to find SIZEOF NATIVE REAL KINDs for Fortran")
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endif ()
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if (NOT PAC_FORTRAN_NATIVE_DOUBLE_SIZEOF)
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message (FATAL_ERROR "Failed to find SIZEOF NATIVE DOUBLE KINDs for Fortran")
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endif ()
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if (NOT PAC_FORTRAN_NATIVE_INTEGER_KIND)
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message (FATAL_ERROR "Failed to find KIND of NATIVE INTEGER for Fortran")
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endif ()
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if (NOT PAC_FORTRAN_NATIVE_REAL_KIND)
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message (FATAL_ERROR "Failed to find KIND of NATIVE REAL for Fortran")
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endif ()
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if (NOT PAC_FORTRAN_NATIVE_DOUBLE_KIND)
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message (FATAL_ERROR "Failed to find KIND of NATIVE DOUBLE for Fortran")
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endif ()
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set (${HDF_PREFIX}_FORTRAN_SIZEOF_LONG_DOUBLE ${${HDF_PREFIX}_SIZEOF_LONG_DOUBLE})
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# remove the invalid kind from the list
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if (NOT(${${HDF_PREFIX}_SIZEOF___FLOAT128} EQUAL 0))
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if (NOT(${${HDF_PREFIX}_SIZEOF___FLOAT128} EQUAL ${max_real_fortran_sizeof})
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AND NOT(${${HDF_PREFIX}_FORTRAN_SIZEOF_LONG_DOUBLE} EQUAL ${max_real_fortran_sizeof})
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# account for the fact that the C compiler can have 16-byte __float128 and the fortran compiler only has 8-byte doubles,
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# so we don't want to remove the 8-byte fortran doubles.
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AND NOT(${PAC_FORTRAN_NATIVE_DOUBLE_SIZEOF} EQUAL ${max_real_fortran_sizeof}))
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message (WARNING "
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Fortran REAL(KIND=${max_real_fortran_kind}) is $max_real_fortran_sizeof Bytes, but no corresponding C float type exists of that size
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!!! Fortran interfaces will not be generated for REAL(KIND=${max_real_fortran_kind}) !!!")
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string (REGEX REPLACE ",[0-9]+}" "}" PAC_FC_ALL_REAL_KINDS ${PAC_FC_ALL_REAL_KINDS})
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string (REGEX REPLACE ",[0-9]+}" "}" PAC_FC_ALL_REAL_KINDS_SIZEOF ${PAC_FC_ALL_REAL_KINDS_SIZEOF})
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math (EXPR NUM_RKIND "${NUM_RKIND} - 1")
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endif ()
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endif ()
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set (${HDF_PREFIX}_H5CONFIG_F_NUM_RKIND "INTEGER, PARAMETER :: num_rkinds = ${NUM_RKIND}")
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string (REGEX REPLACE "{" "" OUT_VAR1 ${PAC_FC_ALL_REAL_KINDS})
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string (REGEX REPLACE "}" "" OUT_VAR1 ${OUT_VAR1})
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set (${HDF_PREFIX}_H5CONFIG_F_RKIND "INTEGER, DIMENSION(1:num_rkinds) :: rkind = (/${OUT_VAR1}/)")
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string (REGEX REPLACE "{" "" OUT_VAR2 ${PAC_FC_ALL_REAL_KINDS_SIZEOF})
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string (REGEX REPLACE "}" "" OUT_VAR2 ${OUT_VAR2})
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set (${HDF_PREFIX}_H5CONFIG_F_RKIND_SIZEOF "INTEGER, DIMENSION(1:num_rkinds) :: rkind_sizeof = (/${OUT_VAR2}/)")
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# Setting definition if there is a 16 byte fortran integer
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string (FIND ${PAC_FC_ALL_INTEGER_KINDS_SIZEOF} "16" pos)
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if (${pos} EQUAL -1)
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set (${HDF_PREFIX}_HAVE_Fortran_INTEGER_SIZEOF_16 0)
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else ()
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set (${HDF_PREFIX}_HAVE_Fortran_INTEGER_SIZEOF_16 1)
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endif ()
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