need_libc=false
dnl Check for usual libc functions
-AC_CHECK_FUNCS([ctime_r daemon fcntl fdopendir fork getenv getpwuid_r gettimeofday isatty lstat memalign posix_fadvise posix_madvise posix_memalign putenv setenv stricmp strnicmp tdestroy uselocale])
+AC_CHECK_FUNCS([ctime_r daemon fcntl fdopendir fork getenv getpwuid_r gettimeofday isatty lstat memalign posix_fadvise posix_madvise posix_memalign putenv setenv setlocale stricmp strnicmp tdestroy uselocale])
AC_REPLACE_FUNCS([asprintf atof atoll getcwd getpid gmtime_r lldiv localtime_r rewind strcasecmp strcasestr strdup strlcpy strncasecmp strndup strnlen strsep strtof strtok_r strtoll swab vasprintf])
AC_CHECK_FUNCS(fdatasync,,
[AC_DEFINE(fdatasync, fsync, [Alias fdatasync() to fsync() if missing.])