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Solaris build fixes: use _sys_errs if available

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This commit is contained in:
David Adam 2014-12-08 08:43:38 +08:00
parent 90629caa61
commit 147078f43d
3 changed files with 68 additions and 2 deletions
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50
configure.ac
View file

@ -694,6 +694,56 @@ else
AC_MSG_RESULT(no)
fi
# Check for sys_errlist
AC_MSG_CHECKING([for sys_errlist array])
AC_TRY_LINK(
[
#include <stdio.h>
],
[
const char *p;
p = sys_errlist[sys_nerr];
],
have_sys_errlist=yes,
have_sys_errlist=no
)
if test "$have_sys_errlist" = yes; then
AC_MSG_RESULT(yes)
AC_DEFINE(
[HAVE_SYS_ERRLIST],
[1],
[Define to 1 if the sys_errlist array is available.]
)
else
AC_MSG_RESULT(no)
fi
# Check for _sys_errs
AC_MSG_CHECKING([for _sys_errs array])
AC_TRY_LINK(
[
#include <string>
],
[
std::string p;
extern const char _sys_errs[];
extern const int _sys_index[];
p = _sys_errs[_sys_index[0]];
],
have__sys__errs=yes,
have__sys__errs=no
)
if test "$have__sys__errs" = yes; then
AC_MSG_RESULT(yes)
AC_DEFINE(
[HAVE__SYS__ERRS],
[1],
[Define to 1 if the _sys_errs array is available.]
)
else
AC_MSG_RESULT(no)
fi
# Check if getopt_long exists and works
AC_MSG_CHECKING([if getopt_long exists and works])
AC_TRY_LINK(

6
osx/config.h
View file

@ -114,6 +114,9 @@
*/
/* #undef HAVE_SYS_DIR_H */
/* Define to 1 if the sys_errlist array is available. */
#define HAVE_SYS_ERRLIST 1
/* Define to 1 if you have the <sys/ioctl.h> header file. */
#define HAVE_SYS_IOCTL_H 1
@ -194,6 +197,9 @@
/* Define to 1 if you have the file `/proc/self/stat'. */
/* #undef HAVE__PROC_SELF_STAT */
/* Define to 1 if the _sys_errs array is available. */
/* #undef HAVE__SYS__ERRS */
/* Define to 1 if the __environ symbol is exported. */
/* #undef HAVE___ENVIRON */

14
wutil.cpp
View file

@ -323,12 +323,23 @@ const char *safe_strerror(int err)
// uClibc does not have sys_errlist, however, its strerror is believed to be async-safe
// See #808
return strerror(err);
#else
#elif defined(HAVE__SYS__ERRS) || defined(HAVE_SYS_ERRLIST)
#ifdef HAVE_SYS_ERRLIST
if (err >= 0 && err < sys_nerr && sys_errlist[err] != NULL)
{
return sys_errlist[err];
}
#elif defined(HAVE__SYS__ERRS)
extern const char _sys_errs[];
extern const int _sys_index[];
extern int _sys_num_err;
if (err >= 0 && err < _sys_num_err) {
return &_sys_errs[_sys_index[err]];
}
#endif // either HAVE__SYS__ERRS or HAVE_SYS_ERRLIST
else
#endif // defined(HAVE__SYS__ERRS) || defined(HAVE_SYS_ERRLIST)
{
int saved_err = errno;
@ -345,7 +356,6 @@ const char *safe_strerror(int err)
errno = saved_err;
return buff;
}
#endif
}
void safe_perror(const char *message)