45 строки
1.1 KiB
Bash
45 строки
1.1 KiB
Bash
dnl -*- shell-script -*-
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dnl
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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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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 $COPYRIGHT$
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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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define([OMPI_C_WEAK_SYMBOLS],[
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#
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# Arguments: None
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#
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# Depdencies: None
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#
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# Check to see if the C compiler can handle weak symbols
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#
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# Sets OMPI_C_WEAK_SYMBOLS=1 if the C compiler has support for weak
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# symbols.
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#
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AC_MSG_CHECKING([for weak symbols])
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AC_LINK_IFELSE(AC_LANG_SOURCE([[#pragma weak fake = real
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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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}]]), ompi_happy=1, ompi_happy=0)
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if test "$ompi_happy" = "1"; then
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AC_MSG_RESULT([yes])
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OMPI_C_HAVE_WEAK_SYMBOLS=1
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else
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AC_MSG_RESULT([no])
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OMPI_C_HAVE_WEAK_SYMBOLS=0
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fi
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unset ompi_happy])dnl
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