76 lines
2.9 KiB
Plaintext
76 lines
2.9 KiB
Plaintext
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dnl -*- shell-script -*-
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dnl
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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dnl University Research and Technology
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dnl Corporation. All rights reserved.
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dnl Copyright (c) 2004-2005 The University of Tennessee and The University
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dnl of Tennessee Research Foundation. All rights
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dnl reserved.
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dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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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) 2010-2015 Cisco Systems, Inc. All rights reserved.
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dnl Copyright (c) 2015 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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dnl
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dnl $HEADER$
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dnl
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dnl
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dnl Check whether Fortran compiler supports the "only" clause properly
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dnl when using modules. Specifically, if we "use a :: only foo" and "use
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dnl b :: only bar", and modules a and b have a conflicting "yow"
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dnl definition, it *should* be ignored because of the "only" clauses. PGI
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dnl 15.7 (and probably prior versions) does not -- but only when
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dnl compiling with -g (!).
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dnl
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dnl OMPI_FORTRAN_CHECK_USE_ONLY([action if supported],
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dnl [action if not supported])
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dnl ----------------------------------------------------
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AC_DEFUN([OMPI_FORTRAN_CHECK_USE_ONLY],[
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AS_VAR_PUSHDEF([use_only_var], [ompi_cv_fortran_use_only])
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OPAL_VAR_SCOPE_PUSH([FCFLAGS_save])
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FCFLAGS_save=$FCFLAGS
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FCFLAGS="-I. $FCFLAGS"
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AC_CACHE_CHECK([if Fortran compiler supports USE...ONLY], use_only_var,
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[AC_LANG_PUSH([Fortran])
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cat > aaa.f90 << EOF
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MODULE aaa
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INTEGER :: CMON(1)
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COMMON/CMMON/CMON
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INTEGER :: global_aaa
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END MODULE aaa
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EOF
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cat > bbb.f90 << EOF
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MODULE bbb
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integer, bind(C, name="cmmon_") :: CMON
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INTEGER :: global_bbb
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END MODULE bbb
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EOF
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OPAL_LOG_COMMAND([$FC $FCFLAGS -c aaa.f90],
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[OPAL_LOG_COMMAND([$FC $FCFLAGS -c bbb.f90],
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[AC_COMPILE_IFELSE([AC_LANG_SOURCE([[PROGRAM test
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USE aaa, ONLY : global_aaa
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USE bbb, ONLY : global_bbb
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implicit none
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END PROGRAM]])],
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[AS_VAR_SET(use_only_var, yes)],
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[AS_VAR_SET(use_only_var, no)])],
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[AS_VAR_SET(use_only_var, no)])],
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[AS_VAR_SET(use_only_var, no)])
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rm -rf aaa.f90 aaa.o bbb.f90 bbb.o *.mod 2>/dev/null
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AC_LANG_POP([Fortran])
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])
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AS_VAR_IF(use_only_var, [yes], [$1], [$2])
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FCFLAGS=$FCFLAGS_save
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OPAL_VAR_SCOPE_POP
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AS_VAR_POPDEF([use_only_var])dnl
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])
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