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(AC_FUNC_STRERROR_R): Rename ac_cv_func_strerror_r_works to

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ac_cv_func_strerror_r_char_p, and rename HAVE_WORKING_STRERROR_R to
STRERROR_R_CHAR_P, since POSIX decided to standardize on the int
flavor of strerror_r.  Always do char* test, as there's no reason not
to.  Assign to a char* var, to catch strerror_r that returns int*.
This commit is contained in:
Paul Eggert 2001-10-22 17:42:32 +00:00
parent 80cd9856d0
commit 5210e0c90b
1 changed files with 17 additions and 19 deletions
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36
lib/autoconf/functions.m4
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@ -1216,19 +1216,20 @@ AU_ALIAS([AM_FUNC_STRTOD], [AC_FUNC_STRTOD])
AC_DEFUN([AC_FUNC_STRERROR_R],
[AC_CHECK_DECLS([strerror_r])
AC_CHECK_FUNCS([strerror_r])
if test $ac_cv_func_strerror_r = yes; then
AC_CACHE_CHECK([for working strerror_r],
ac_cv_func_strerror_r_works,
AC_CACHE_CHECK([whether strerror_r returns char *],
ac_cv_func_strerror_r_char_p,
[
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
[[
char buf[100];
char x = *strerror_r (0, buf, sizeof buf);
]])],
ac_cv_func_strerror_r_works=yes,
ac_cv_func_strerror_r_works=no)
if test $ac_cv_func_strerror_r_works = no; then
# strerror_r seems not to work, but now we have to choose between
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
@ -1239,15 +1240,12 @@ if test $ac_cv_func_strerror_r = yes; then
[[char buf[100];
char x = *strerror_r (0, buf, sizeof buf);
exit (!isalpha (x));]])],
ac_cv_func_strerror_r_works=yes,
ac_cv_func_strerror_r_works=no,
ac_cv_func_strerror_r_works=no)
ac_cv_func_strerror_r_char_p=yes, , :)
fi
])
if test $ac_cv_func_strerror_r_works = yes; then
AC_DEFINE_UNQUOTED([HAVE_WORKING_STRERROR_R], 1,
[Define to 1 if `strerror_r' returns a string.])
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