44 строки
1.7 KiB
Plaintext
44 строки
1.7 KiB
Plaintext
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# -*- shell-script -*-
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#
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# Copyright (c) 2009 IBM Corporation. All rights reserved.
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# Copyright (c) 2009 Cisco Systems, Inc. All rights reserved.
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# $COPYRIGHT$
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#
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# Additional copyrights may follow
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#
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# $HEADER$
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#
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# This macro checks to ensure that the compiler properly supports
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# offsetof(). The PGI compilers had a problem with this macro in some
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# versions of their compiler on some platforms (e.g., 9.0-1 on
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# x86_64). The workaround is to use -DNO_PGI_OFFSET in these cases.
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# A bug report was submitted to PGI support in late June 2009; the
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# problem was apparently a trivial typo in one of their header files
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# and should be fixed in subsequent releases (e.g., 9.0-2?).
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AC_DEFUN([OPAL_CHECK_OFFSETOF],[
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OMPI_VAR_SCOPE_PUSH([have_offsetof_msg])
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AC_MSG_CHECKING(for functional offsetof macro)
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AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[#include<stddef.h>]],
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[[struct foo {int a, b;}; size_t offset = offsetof(struct foo, b); ]]),
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[have_offsetof_msg="yes"], [have_offsetof_msg="no"])
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if test "$have_offsetof_msg" = "no"; then
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CPPFLAGS="$CPPFLAGS -DNO_PGI_OFFSET"
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AC_COMPILE_IFELSE(AC_LANG_PROGRAM([[#include<stddef.h>]],
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[[struct foo {int a, b;}; size_t offset = offsetof(struct foo, b); ]]),
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[have_offsetof_msg="yes"], [have_offsetof_msg="no"])
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if test "$have_offsetof_msg" = "no"; then
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AC_MSG_RESULT([$have_offsetof_msg])
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AC_MSG_WARN([Your compiler does not support offsetof macro])
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AC_MSG_ERROR([Configure: Cannot continue])
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fi
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fi
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AC_MSG_RESULT([$have_offsetof_msg])
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OMPI_VAR_SCOPE_POP
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])dnl
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