+#include <sys/stat.h>])
+
+# Save and restore LIBS so e.g., -lrt, isn't added to it. Otherwise, *all*
+# programs in the package would end up linked with that potentially-shared
+# library, inducing unnecessary run-time overhead.
+
+# Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
+# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
+tar_save_LIBS=$LIBS
+ LIB_CLOCK_GETTIME=
+ AC_SEARCH_LIBS(clock_gettime, [rt posix4])
+ case "$ac_cv_search_clock_gettime" in
+ -l*) LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime;;
+ esac
+ AC_SUBST(LIB_CLOCK_GETTIME)
+ AC_CHECK_FUNCS(clock_gettime)
+LIBS=$tar_save_LIBS
+
+AC_CHECK_FUNCS(fsync lstat mkfifo readlink strerror symlink setlocale utimes)
+AC_CHECK_DECLS([getgrgid],,, [#include <grp.h>])
+AC_CHECK_DECLS([getpwuid],,, [#include <pwd.h>])
+AC_CHECK_DECLS([valloc])
+AC_CHECK_DECLS([time],,, [#include <time.h>])
+
+# Set LIB_SETSOCKOPT to -lnsl -lsocket if necessary.
+tar_save_LIBS=$LIBS
+ LIB_SETSOCKOPT=
+ AC_SEARCH_LIBS(setsockopt, [socket], ,
+ [AC_SEARCH_LIBS(setsockopt, [socket], , , [-lnsl])])
+ AC_SEARCH_LIBS(setsockopt, [nsl])
+
+ case "$ac_cv_search_setsockopt" in
+ -l*) LIB_SETSOCKOPT=$ac_cv_search_setsockopt
+ esac
+ AC_SUBST(LIB_SETSOCKOPT)
+LIBS=$tar_save_LIBS
+
+AC_REPLACE_FUNCS(waitpid)