| 1 | # printf-posix.m4 serial 2 (gettext-0.13.1) |
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| 2 | dnl Copyright (C) 2003 Free Software Foundation, Inc. |
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| 3 | dnl This file is free software; the Free Software Foundation |
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| 4 | dnl gives unlimited permission to copy and/or distribute it, |
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| 5 | dnl with or without modifications, as long as this notice is preserved. |
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| 6 | |
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| 7 | dnl From Bruno Haible. |
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| 8 | dnl Test whether the printf() function supports POSIX/XSI format strings with |
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| 9 | dnl positions. |
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| 10 | |
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| 11 | AC_DEFUN([gt_PRINTF_POSIX], |
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| 12 | [ |
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| 13 | AC_REQUIRE([AC_PROG_CC]) |
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| 14 | AC_CACHE_CHECK([whether printf() supports POSIX/XSI format strings], |
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| 15 | gt_cv_func_printf_posix, |
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| 16 | [ |
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| 17 | AC_TRY_RUN([ |
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| 18 | #include <stdio.h> |
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| 19 | #include <string.h> |
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| 20 | /* The string "%2$d %1$d", with dollar characters protected from the shell's |
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| 21 | dollar expansion (possibly an autoconf bug). */ |
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| 22 | static char format[] = { '%', '2', '$', 'd', ' ', '%', '1', '$', 'd', '\0' }; |
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| 23 | static char buf[100]; |
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| 24 | int main () |
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| 25 | { |
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| 26 | sprintf (buf, format, 33, 55); |
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| 27 | return (strcmp (buf, "55 33") != 0); |
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| 28 | }], gt_cv_func_printf_posix=yes, gt_cv_func_printf_posix=no, |
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| 29 | [ |
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| 30 | AC_EGREP_CPP(notposix, [ |
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| 31 | #if defined __NetBSD__ || defined _MSC_VER || defined __MINGW32__ || defined __CYGWIN__ |
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| 32 | notposix |
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| 33 | #endif |
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| 34 | ], gt_cv_func_printf_posix="guessing no", |
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| 35 | gt_cv_func_printf_posix="guessing yes") |
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| 36 | ]) |
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| 37 | ]) |
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| 38 | case $gt_cv_func_printf_posix in |
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| 39 | *yes) |
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| 40 | AC_DEFINE(HAVE_POSIX_PRINTF, 1, |
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| 41 | [Define if your printf() function supports format strings with positions.]) |
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| 42 | ;; |
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| 43 | esac |
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| 44 | ]) |
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