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| 1 | +#serial 1003 |
| 2 | +# Experimental replacement for the function in the latest CVS autoconf. |
| 3 | +# Use with the error.c file in ../lib. |
| 4 | + |
| 5 | +# Copyright 2001 Free Software Foundation, Inc. |
| 6 | + |
| 7 | +# This program is free software; you can redistribute it and/or modify |
| 8 | +# it under the terms of the GNU General Public License as published by |
| 9 | +# the Free Software Foundation; either version 2, or (at your option) |
| 10 | +# any later version. |
| 11 | + |
| 12 | +# This program is distributed in the hope that it will be useful, |
| 13 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | +# GNU General Public License for more details. |
| 16 | + |
| 17 | +# You should have received a copy of the GNU General Public License |
| 18 | +# along with this program; if not, write to the Free Software Foundation, |
| 19 | +# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | + |
| 21 | +undefine([AC_FUNC_STRERROR_R]) |
| 22 | + |
| 23 | +# AC_FUNC_STRERROR_R |
| 24 | +# ------------------ |
| 25 | +AC_DEFUN([AC_FUNC_STRERROR_R], |
| 26 | +[AC_CHECK_DECLS([strerror_r]) |
| 27 | +AC_CHECK_FUNCS([strerror_r]) |
| 28 | +AC_CACHE_CHECK([whether strerror_r returns char *], |
| 29 | + ac_cv_func_strerror_r_char_p, |
| 30 | + [ |
| 31 | + ac_cv_func_strerror_r_char_p=no |
| 32 | + if test $ac_cv_have_decl_strerror_r = yes; then |
| 33 | + AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], |
| 34 | + [[ |
| 35 | + char buf[100]; |
| 36 | + char x = *strerror_r (0, buf, sizeof buf); |
| 37 | + char *p = strerror_r (0, buf, sizeof buf); |
| 38 | + ]])], |
| 39 | + ac_cv_func_strerror_r_char_p=yes) |
| 40 | + else |
| 41 | + # strerror_r is not declared. Choose between |
| 42 | + # systems that have relatively inaccessible declarations for the |
| 43 | + # function. BeOS and DEC UNIX 4.0 fall in this category, but the |
| 44 | + # former has a strerror_r that returns char*, while the latter |
| 45 | + # has a strerror_r that returns `int'. |
| 46 | + # This test should segfault on the DEC system. |
| 47 | + AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT |
| 48 | + extern char *strerror_r ();], |
| 49 | + [[char buf[100]; |
| 50 | + char x = *strerror_r (0, buf, sizeof buf); |
| 51 | + exit (!isalpha (x));]])], |
| 52 | + ac_cv_func_strerror_r_char_p=yes, , :) |
| 53 | + fi |
| 54 | + ]) |
| 55 | +if test $ac_cv_func_strerror_r_char_p = yes; then |
| 56 | + AC_DEFINE([STRERROR_R_CHAR_P], 1, |
| 57 | + [Define to 1 if strerror_r returns char *.]) |
| 58 | +fi |
| 59 | +])# AC_FUNC_STRERROR_R |
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