| #serial 1003 |
| # Experimental replacement for the function in the latest CVS autoconf. |
| # Use with the error.c file in ../lib. |
| |
| dnl Copyright 2001 Free Software Foundation, Inc. |
| dnl This file is free software; the Free Software Foundation |
| dnl gives unlimited permission to copy and/or distribute it, |
| dnl with or without modifications, as long as this notice is preserved. |
| |
| undefine([AC_FUNC_STRERROR_R]) |
| |
| # AC_FUNC_STRERROR_R |
| # ------------------ |
| AC_DEFUN([AC_FUNC_STRERROR_R], |
| [AC_CHECK_DECLS([strerror_r]) |
| AC_CHECK_FUNCS([strerror_r]) |
| AC_CACHE_CHECK([whether strerror_r returns char *], |
| ac_cv_func_strerror_r_char_p, |
| [ |
| ac_cv_func_strerror_r_char_p=no |
| if test $ac_cv_have_decl_strerror_r = yes; then |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], |
| [[ |
| char buf[100]; |
| char x = *strerror_r (0, buf, sizeof buf); |
| char *p = strerror_r (0, buf, sizeof buf); |
| ]])], |
| ac_cv_func_strerror_r_char_p=yes) |
| else |
| # strerror_r is not declared. Choose between |
| # systems that have relatively inaccessible declarations for the |
| # function. BeOS and DEC UNIX 4.0 fall in this category, but the |
| # former has a strerror_r that returns char*, while the latter |
| # has a strerror_r that returns `int'. |
| # This test should segfault on the DEC system. |
| AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT |
| extern char *strerror_r ();], |
| [[char buf[100]; |
| char x = *strerror_r (0, buf, sizeof buf); |
| exit (!isalpha (x));]])], |
| ac_cv_func_strerror_r_char_p=yes, , :) |
| fi |
| ]) |
| if test $ac_cv_func_strerror_r_char_p = yes; then |
| AC_DEFINE([STRERROR_R_CHAR_P], 1, |
| [Define to 1 if strerror_r returns char *.]) |
| fi |
| ])# AC_FUNC_STRERROR_R |