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+1999-04-25 Paul D. Smith <psmith@gnu.org>
+
+ * make.texinfo: Updates to @dircategory and @direntry suggested by
+ Karl Berry <karl@cs.umb.edu>.
+
+1999-04-18 Eli Zaretskii <eliz@is.elta.co.il>
+
+ * configh.dos.template: Update to recognize that version 2.02 of
+ DJGPP contains sys_siglist stuff.
+
+1999-04-14 Paul D. Smith <psmith@gnu.org>
+
+ * make.texinfo (Options/Recursion): Document the job server.
+ (Parallel): Tweaks.
+
+1999-04-13 Paul D. Smith <psmith@gnu.org>
+
+ Implement a new "job server" feature; the implementation was
+ suggested by Howard Chu <hyc@highlandsun.com>.
+
+ * configure.in (job-server): New disable option for job server
+ support--it's enabled by default.
+
+ * NEWS: Summarize the new feature.
+
+ * acconfig.h: New definition MAKE_JOBSERVER if job server support
+ is enabled.
+ * config.h-vms.template: Undef MAKE_JOBSERVER for this port.
+ * config.h.W32.template: Ditto.
+ * config.ami.template: Ditto.
+
+ * main.c (struct command_switch): Add a new type: int_string.
+ (switches[]) Use int_string for -j if MAKE_JOBSERVER.
+ (init_switches): Initialize the new int_string switch type.
+ (print_usage): New function, extracted from decode_switches().
+ (decode_switches): Call it. Decode the new int_string switch type.
+ (define_makeflags): Add new int_string switch data to MAKEFLAGS.
+ (job_fds[]) Array to contain the pipe file descriptors.
+ (main): Parse the job_slots_str option results. If necessary,
+ create the pipe and seed it with tokens. Set the non-blocking bit
+ for the read fd. Enable the signal handler for SIGCHLD even if we
+ have a non-hanging wait; it's needed to interrupt the select() in
+ job.c:start_waiting_job().
+
+ * make.h: Declare job_fds[].
+
+ * job.h (struct child): Add job_token field to store the token for
+ this job (if any).
+
+ * job.c (reap_children): When a child is fully reaped, release the
+ token back into the pipe.
+ (free_child): If the child to be freed still has a token, put it
+ back.
+ (new_job): Initialize the job_token member.
+ (start_waiting_job): For local jobs, if we're using the pipe, get
+ a token before we check the load, etc. We do this by performing a
+ non-blocking read in a loop. If the read fails, no token is
+ available. Do a select on the fd to wait for a token. We need to
+ re-enable the signal handler for SIGCHLD even if we have a
+ non-hanging waitpid() or wait3(), so that the signal will
+ interrupt the select() and we can wake up to reap children.
+ (child_handler): Re-enable the signal handler. The count is still
+ kept although it's not needed or used unless you don't have
+ waitpid() or wait3().
+
1999-04-03 Paul D. Smith <psmith@gnu.org>
* remake.c (f_mtime): If: a) we found a file and b) we didn't