1 | # $Id$ |
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2 | # |
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3 | # SYNOPSIS |
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4 | # |
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5 | # AX_FUNC_VA_COPY([ACTION-IF-FOUND[, [ACTION-IF-NOT-FOUND]]) |
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6 | # |
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7 | # DESCRIPTION |
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8 | # |
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9 | # Test for va_copy function/macro. |
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10 | # When found it defines ``HAVE_VA_COPY`` and/or ``HAVE___VA_COPY`` |
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11 | # when ``va_copy`` and/or ``__va_copy`` is found respectively. |
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12 | # |
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13 | # LAST MODIFICATION |
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14 | # |
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15 | # 2008-06-13 |
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16 | # |
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17 | # LICENSE |
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18 | # |
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19 | # Written by Åukasz CieÅnik <lukasz.ciesnik@fedstage.com> |
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20 | # and placed under Public Domain. |
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21 | # |
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22 | |
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23 | AC_DEFUN([AX_FUNC_VA_COPY], [ |
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24 | |
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25 | ax_func_va_copy_ok=no |
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26 | |
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27 | AH_TEMPLATE([HAVE_VA_COPY], |
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28 | [Define to 1 if you have the va_copy function.]) |
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29 | AC_MSG_CHECKING([for va_copy]) |
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30 | AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>]], |
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31 | [[va_list a, b; va_copy(a, b);]])],[ |
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32 | ax_func_va_copy_ok=yes |
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33 | AC_MSG_RESULT([yes]) |
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34 | AC_DEFINE([HAVE_VA_COPY], [1]) |
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35 | ],[ |
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36 | AC_MSG_RESULT([no]) |
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37 | ],[ |
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38 | AC_MSG_RESULT([no]) |
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39 | ]) |
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40 | |
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41 | AH_TEMPLATE([HAVE___VA_COPY], |
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42 | [Define to 1 if you have the __va_copy function.]) |
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43 | AC_MSG_CHECKING([for __va_copy]) |
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44 | AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <stdarg.h>]], |
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45 | [[va_list a, b; __va_copy(a, b);]])],[ |
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46 | ax_func_va_copy_ok=yes |
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47 | AC_MSG_RESULT([yes]) |
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48 | AC_DEFINE([HAVE___VA_COPY], [1]) |
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49 | AH_BOTTOM([ |
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50 | #ifndef HAVE_VA_COPY |
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51 | # define va_copy(a,b) __va_copy(a,b) |
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52 | # define HAVE_VA_COPY 1 |
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53 | #endif |
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54 | ]) |
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55 | ], [ |
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56 | AC_MSG_RESULT([no]) |
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57 | ], [ |
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58 | AC_MSG_RESULT([no]) |
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59 | ]) |
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60 | |
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61 | if test x$ax_func_va_copy_ok = xyes; then |
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62 | ifelse([$1], , :, [$1]) |
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63 | else |
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64 | ifelse([$2], , :, [$2]) |
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65 | fi |
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66 | ]) |
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