2004-01-08 13:34:31 +00:00
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dnl -*- shell-script -*-
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dnl
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2004-11-22 01:38:40 +00:00
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dnl Copyright (c) 2004-2005 The Trustees of Indiana University.
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dnl All rights reserved.
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dnl Copyright (c) 2004-2005 The Trustees of the University of Tennessee.
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dnl All rights reserved.
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2004-11-28 20:09:25 +00:00
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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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2005-03-24 12:43:37 +00:00
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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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2004-11-22 01:38:40 +00:00
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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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2004-01-08 13:34:31 +00:00
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dnl $HEADER$
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dnl
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2005-07-09 18:52:53 +00:00
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# OMPI_C_WEAK_SYMBOLS()
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# ---------------------
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# sets OMPI_C_WEAK_SYMBOLS=1 if C compiler has support for weak symbols
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2004-06-07 15:33:53 +00:00
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define([OMPI_C_WEAK_SYMBOLS],[
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2005-07-09 18:52:53 +00:00
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AC_CACHE_CHECK([for weak symbols],
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[ompi_cv_c_weak_symbols],
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[AC_LINK_IFELSE([AC_LANG_SOURCE([[#pragma weak fake = real
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2004-01-08 13:34:31 +00:00
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extern int fake(int i);
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int real(int i);
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int real(int i) { return i; }
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int main(int argc, char* argv[]) {
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return fake(3);
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2005-07-09 18:52:53 +00:00
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}]])],
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[ompi_cv_c_weak_symbols="yes"],
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[ompi_cv_c_weak_symbols="no"])])
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2004-01-08 13:34:31 +00:00
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2005-07-09 18:52:53 +00:00
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AS_IF([test "$ompi_cv_c_weak_symbols" = "yes"],
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[OMPI_C_HAVE_WEAK_SYMBOLS=1], [OMPI_C_HAVE_WEAK_SYMBOLS=0])
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]) dnl
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