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Commit	Line	Data
	1	#serial 1002
	2	# Experimental replacement for the function in the latest CVS autoconf.
	3	# If the compile-test says strerror_r doesn't work, then resort to a
	4	# `run'-test that works on BeOS and segfaults on DEC Unix.
	5	# Use with the error.c file in ../lib.
	6
	7	undefine([AC_FUNC_STRERROR_R])
	8
	9	# AC_FUNC_STRERROR_R
	10	# ------------------
	11	AC_DEFUN([AC_FUNC_STRERROR_R],
	12	[AC_CHECK_DECLS([strerror_r])
	13	AC_CHECK_FUNCS([strerror_r])
	14	if test $ac_cv_func_strerror_r = yes; then
	15	AC_CHECK_HEADERS(string.h)
	16	AC_CACHE_CHECK([for working strerror_r],
	17	ac_cv_func_strerror_r_works,
	18	[
	19	AC_TRY_COMPILE(
	20	[
	21	# include <stdio.h>
	22	# if HAVE_STRING_H
	23	# include <string.h>
	24	# endif
	25	],
	26	[
	27	char buf[100];
	28	char x = *strerror_r (0, buf, sizeof buf);
	29	],
	30	ac_cv_func_strerror_r_works=yes,
	31	ac_cv_func_strerror_r_works=no
	32	)
	33	if test $ac_cv_func_strerror_r_works = no; then
	34	# strerror_r seems not to work, but now we have to choose between
	35	# systems that have relatively inaccessible declarations for the
	36	# function. BeOS and DEC UNIX 4.0 fall in this category, but the
	37	# former has a strerror_r that returns char*, while the latter
	38	# has a strerror_r that returns `int'.
	39	# This test should segfault on the DEC system.
	40	AC_TRY_RUN(
	41	[
	42	# include <stdio.h>
	43	# include <string.h>
	44	# include <ctype.h>
	45
	46	extern char *strerror_r ();
	47
	48	int
	49	main ()
	50	{
	51	char buf[100];
	52	char x = *strerror_r (0, buf, sizeof buf);
	53	exit (!isalpha (x));
	54	}
	55	],
	56	ac_cv_func_strerror_r_works=yes,
	57	ac_cv_func_strerror_r_works=no,
	58	ac_cv_func_strerror_r_works=no)
	59	fi
	60	])
	61	if test $ac_cv_func_strerror_r_works = yes; then
	62	AC_DEFINE_UNQUOTED(HAVE_WORKING_STRERROR_R, 1,
	63	[Define to 1 if `strerror_r' returns a string.])
	64	fi
	65	fi
	66	])# AC_FUNC_STRERROR_R