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openmpi/config/f77_find_ext_symbol_convention.m4
Brian Barrett 74860649bc * skip some F90 tests if we aren't compilng F90
* Make sure to invalidate the cache on a couple of tests when we don't
  want F77/F90

This commit was SVN r8994.
2006-02-12 16:59:56 +00:00

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dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
dnl University Research and Technology
dnl Corporation. All rights reserved.
dnl Copyright (c) 2004-2005 The University of Tennessee and The University
dnl of Tennessee Research Foundation. All rights
dnl reserved.
dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
dnl University of Stuttgart. All rights reserved.
dnl Copyright (c) 2004-2005 The Regents of the University of California.
dnl All rights reserved.
dnl $COPYRIGHT$
dnl
dnl Additional copyrights may follow
dnl
dnl $HEADER$
dnl
AC_DEFUN([OMPI_F77_FIND_EXT_SYMBOL_CONVENTION], [
AC_REQUIRE([AC_PROG_NM])
# invalidate cache if result came from a run where F77 was disabled
if test "$ompi_cv_f77_external_symbol" = "skipped" ; then
unset ompi_cv_f77_external_symbol
fi
AC_CACHE_CHECK([$F77 external symbol convention],
[ompi_cv_f77_external_symbol],
[if test "$F77" = "none" -o "$OMPI_WANT_F77_BINDINGS" = "0"; then
ompi_cv_f77_external_symbol="skipped"
else
cat >conftest.f <<EOF
subroutine FOO_bar(a)
integer a
a = 1
return
end
EOF
OMPI_LOG_COMMAND([$F77 $FFLAGS -c conftest.f $LDFLAGS $LIBS],
[if $NM conftest.o | grep foo_bar__ >/dev/null 2>&1 ; then
ompi_cv_f77_external_symbol="double underscore"
elif $NM conftest.o | grep foo_bar_ >/dev/null 2>&1 ; then
ompi_cv_f77_external_symbol="single underscore"
elif $NM conftest.o | grep FOO_bar >/dev/null 2>&1 ; then
ompi_cv_f77_external_symbol="mixed case"
elif $NM conftest.o | grep foo_bar >/dev/null 2>&1 ; then
ompi_cv_f77_external_symbol="no underscore"
elif $NM conftest.o | grep FOO_BAR >/dev/null 2>&1 ; then
ompi_cv_f77_external_symbol="upper case"
else
$NM conftest.o >conftest.out 2>&1
OMPI_LOG_MSG([output from $NM:])
OMPI_LOG_FILE([conftest.out])
AC_MSG_ERROR([Could not determine Fortran naming convention.])
fi],
[AC_MSG_ERROR([Fortran compiler did not produce object file])])
fi])
ompi_fortran_double_underscore=0
ompi_fortran_single_underscore=0
ompi_fortran_caps=0
ompi_fortran_plain=0
if test "$ompi_cv_f77_external_symbol" = "double underscore" ; then
ompi_fortran_double_underscore=1
elif test "$ompi_cv_f77_external_symbol" = "single underscore" ; then
ompi_fortran_single_underscore=1
elif test "$ompi_cv_f77_external_symbol" = "mixed case" ; then
ompi_fortran_caps=1
elif test "$ompi_cv_f77_external_symbol" = "no underscore" ; then
ompi_fortran_plain=1
elif test "$ompi_cv_f77_external_symbol" = "upper case" ; then
ompi_fortran_caps=1
elif test "$ompi_cv_f77_external_symbol" != "skipped" ; then
AC_MSG_ERROR([unknown naming convention: $ompi_cv_f77_external_symbol])
fi
AC_DEFINE_UNQUOTED([OMPI_F77_DOUBLE_UNDERSCORE],
[$ompi_fortran_double_underscore],
[Whether fortran symbols have a trailing double underscore or not])
AC_DEFINE_UNQUOTED([OMPI_F77_SINGLE_UNDERSCORE],
[$ompi_fortran_single_underscore],
[Whether fortran symbols have a trailing underscore or not])
AC_DEFINE_UNQUOTED([OMPI_F77_CAPS],
[$ompi_fortran_caps],
[Whether fortran symbols are all caps or not])
AC_DEFINE_UNQUOTED([OMPI_F77_PLAIN],
[$ompi_fortran_plain],
[Whether fortran symbols have no trailing underscore or not])
rm -f conftest.*
])dnl
AC_DEFUN([OMPI_F77_MAKE_C_FUNCTION], [
if test "$ompi_cv_f77_external_symbol" = "double underscore" ; then
# so the general rule is that if there is an _ in the function
# name, then there are two trailing underscores. Otherwise,
# there is only one trailing underscore. Any idea how to do
# that with m4_translit?
if echo $2 | grep _ >/dev/null 2>&1 ; then
$1[=]m4_translit([$2], [A-Z], [a-z])[__]
else
$1[=]m4_translit([$2], [A-Z], [a-z])[_]
fi
elif test "$ompi_cv_f77_external_symbol" = "single underscore" ; then
$1[=]m4_translit([$2], [A-Z], [a-z])[_]
elif test "$ompi_cv_f77_external_symbol" = "mixed case" ; then
$1[=]$2
elif test "$ompi_cv_f77_external_symbol" = "no underscore" ; then
$1[=]m4_translit([$2], [A-Z], [a-z])
elif test "$ompi_cv_f77_external_symbol" = "upper case" ; then
$1[=]m4_translit([$2], [a-z], [A-Z])
else
AC_MSG_ERROR([unknown naming convention: $ompi_cv_f77_external_symbol])
fi
])