AC_DEFUN([gl_TIME_R],
[
+ dnl Persuade glibc and Solaris <time.h> to declare localtime_r.
AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS])
+
+ AC_REQUIRE([gl_HEADER_TIME_H_DEFAULTS])
AC_REQUIRE([AC_C_RESTRICT])
AC_CACHE_CHECK([whether localtime_r is compatible with its POSIX signature],