Merge pull request #8116 from ggouaillardet/topic/fortran_real128
configury: enhance the check for ISO_FORTRAN_ENV module
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@ -11,6 +11,8 @@ dnl University of Stuttgart. All rights reserved.
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dnl Copyright (c) 2004-2005 The Regents of the University of California.
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dnl All rights reserved.
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dnl Copyright (c) 2010-2014 Cisco Systems, Inc. All rights reserved.
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dnl Copyright (c) 2020 Research Organization for Information Science
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dnl and Technology (RIST). All rights reserved.
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dnl $COPYRIGHT$
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dnl
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dnl Additional copyrights may follow
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@ -24,12 +26,16 @@ dnl
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# ----------------------------------------------------
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AC_DEFUN([OMPI_FORTRAN_CHECK_ISO_FORTRAN_ENV],[
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AS_VAR_PUSHDEF([iso_fortran_env_var], [ompi_cv_fortran_have_iso_fortran_env])
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OPAL_VAR_SCOPE_PUSH([iso_fortran_env_kind])
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AC_CACHE_CHECK([if Fortran compiler supports ISO_FORTRAN_ENV], iso_fortran_env_var,
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[AC_LANG_PUSH([Fortran])
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[AS_IF([test $OMPI_HAVE_FORTRAN_REAL16 -eq 1],
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[iso_fortran_env_kind=real128],
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[iso_fortran_env_kind=real32])
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AC_LANG_PUSH([Fortran])
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AC_COMPILE_IFELSE([AC_LANG_SOURCE([[program check_for_iso_fortran_env
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use, intrinsic :: iso_fortran_env
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real(real32) :: var
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real($iso_fortran_env_kind) :: var
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var = 12.34
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end program]])],
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[AS_VAR_SET(iso_fortran_env_var, yes)],
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@ -37,6 +43,7 @@ end program]])],
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AC_LANG_POP([Fortran])
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])
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OPAL_VAR_SCOPE_POP
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AS_VAR_IF(iso_fortran_env_var, [yes], [$1], [$2])
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AS_VAR_POPDEF([iso_fortran_env_var])
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])
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