# Solaris 2.5.1 needs -lposix4 to get the nanosleep function.
# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
- AC_SEARCH_LIBS(nanosleep, [rt posix4], [LIB_NANOSLEEP=$ac_cv_search_nanosleep])
- AC_SUBST(LIB_NANOSLEEP)
+ AC_SEARCH_LIBS([nanosleep], [rt posix4],
+ [test "$ac_cv_search_nanosleep" = "none required" ||
+ LIB_NANOSLEEP=$ac_cv_search_nanosleep])
+ AC_SUBST([LIB_NANOSLEEP])
AC_CACHE_CHECK([whether nanosleep works],
jm_cv_func_nanosleep_works,