Patch Name: PHCO_18638

Patch Description: s700_800 10.20 make(1) cumulative patch

Creation Date: 99/05/25

Post Date:  99/05/28

Warning: 01/03/15 - This Non-Critical Warning has been issued by HP.

	- PHCO_18638 introduces a problem whereby, if a target is a
	  symbolic link and the link target does not exist, the
	  timestamp of the symbolic link is used rather than the link
	  target to decide if the target needs to be rebuild.
	- HP recommends that PHCO_18638 be removed from systems and
	  depots where it could lead to situations that expose the
	  above described problem.
	- The previous patch, PHCO_16923, does not exhibit this same
	  problem but has been recalled for another reason.
	  PHCO_16371, does exhibit neither of these problems and will
	  be re-released until a replacement patch is available.  To
	  ensure that as many other known issues as possible are
	  addressed, HP recommends that PHCO_16371 be installed after
	  PHCO_18638 and PHCO_16923 are removed.  If PHCO_16371 was
	  installed prior to PHCO_18638 or PHCO_16923, it will
	  automatically be restored when PHCO_18638 and PHCO_16923 are
	  removed and will not need to be re-installed.
	- PHCO_18638 is included in the following Support Plus
	  General Release Patch Bundles:
		September 1999:	XSW800GR1020_B.10.20.46
		September 1999:	XSW700GR1020_B.10.20.46
		December 1999:  XSW800GR1020_B.10.20.47
		December 1999:  XSW700GR1020_B.10.20.47
		March 2000:     XSW800GR1020_B.10.20.48
		March 2000:     XSW700GR1020_B.10.20.48
		June 2000:      XSW800GR1020_B.10.20.49.3
		June 2000:      XSW700GR1020_B.10.20.49.3
		September 2000: XSW800GR1020_B.10.20.50.3
		September 2000: XSW700GR1020_B.10.20.50.3
		December 2000:  XSW800GR1020_B.10.20.51.2
		December 2000:  XSW700GR1020_B.10.20.51.2
		March 2001:     XSW700GR1020_B.10.20.52.2
		March 2001:     XSW800GR1020_B.10.20.52.2

Hardware Platforms - OS Releases:
	s700: 10.20
	s800: 10.20

Products: N/A

Filesets:
	OS-Core.UX-CORE

Automatic Reboot?: No

Status: General Superseded With Warnings

Critical: No

Path Name: /hp-ux_patches/s700_800/10.X/PHCO_18638

Symptoms:
	PHCO_18638:
	1. PHCO_16923 make(1) coredumps running
	   non-interpreter (#!) script.
	2. make uses inference rule in the presence
	   of an explicit rule.
	3. make(1) dumps core for filenames having
	   long suffixes.

	PHCO_16923:
	Make(1) output the error message
	"Too many exec arguments" if the
	number of arguments exceeds 500

	PHCO_16371:
	make(1) gives error "line too long" if the
	number of characters for exec() arguments
	exceeds 20478.

	PHCO_14612:
	10.x make(1) is much slower compared to
	9.x make(1).

	PHCO_11760:
	make(1) silently fails to search the list
	of directories to search for prerequisites
	if VPATH is longer than MAXPATHLEN.

	PHCO_10836:
	1. Performance of make(1) degrades drastically
	   for very long VPATH.
	2. 10.X make is much slower than 9.X make.
	3. make does not see files built for previous
	   prerequisites.
	4. make can ignore the line following an "include"
	   in Makefile.

	PHCO_8893:
	1. make(1) does not use the SHELL variable to run the
	   commands always.
	2. make(1) does not rebuild libraries as mentioned
	   in the man-pages.
	3. Dynamic pre-requisite variables like $${@:.o=.c} does
	   not work as expected.
	4. make(1) does not support multiple conditional macros.
	5. make(1) ignores the last command line if there is no
	   non-white characters after the '\' character.

Defect Description:
	PHCO_18638:
	1. Make(1) dumps core when executing non-interpreter
	   shell scripts within it i.e scripts without a
	   #! in the beginning of the line.

	Resolution:
	   Make(1) was trying to access a memory location
	   which is not malloced(i.e beyond the malloced area).
	   The operation *--argv = (unsigned char *) "sh" is
	   illegal, because we are assigning "sh" to an
	   address, which is not malloced. So some memory
	   operation(free, in this case) on this address
	   was causing a memory fault(core dump).
	   Having a local buffer (localargv) with
	   correct pointer initialization solves the
	   problem.

	2. There is a bug in make's handling of symbolic
	   links. If the ".c" file is a symbolic link to a
	   non-existent file, then make(1) stops with the
	   following error message:
		Make: Don't know how to make x.c.  Stop.
	 Ex:
	        Have a makefile as follows:

	        x.o : z
	                @echo "OK"
	        z :
	                cc -o -c x.o y.c

	        then to reproduce the problem, do the following

	                ln -s junk x.c
	                make
	        Make: Don't know how to make x.c.  Stop.

	Resolution:
	   Make(1) uses stat(2) to obtain the last
	   modification time of a file. When the file
	   is a symbolic link and the link points to a
	   non-existent file, then stat returns an error.
	   So using lstat will solve the problem.
	   The lstat function detects symbolic links and returns
	   information(modification time) about the symbolic link,
	   not the file referenced by the symbolic link.

	3. make(1) dumps core for filenames having
	   long suffixes.

	PHCO_16923:
	Make(1) has the value of OUTARGVMAX hardcoded to
	500. Thus, if the number of argments exceeded
	500, an error occurred.

	PHCO_16371:
	make(1) uses the ARG_MAX constant defined in
	limit.h and this value(20478) has been hardcoded
	in the make code, as ARG_MAX is configurable make(1)
	now determines the value of ARG_MAX dynamically.

	PHCO_14612:
	10.x make(1) used to make number of pathconf(2)
	calls. This is due to the fix for DSDe423658.
	Also make(1) used to make unnecessary access(2)
	calls to check the existence of the file.

	PHCO_11760:
	make(1) silently fails to search the list of
	directories to search for prerequisites if path
	set in VPATH holds longer than MAXPATHLEN.

	PHCO_10836:
	1. Performance of make(1) degrades drastically for
	   very long VPATH.
	2. 10.X make is much slower than 9.X make.
	3. make does not see files built for previous
	   prerequisites.
	4. make can ignore the line following an "include"
	   in Makefile.

	PHCO_8893:
	1. make(1) does not use the SHELL variable to run the
	   commands always.
	2. make(1) does not rebuild libraries as mentioned in the
	   man-pages.
	3. Dynamic pre-requisite variables like $${@:.o=.c} does
	   not work as expected.
	4. make(1) does not support multiple conditional macros.
	5. make(1) ignores the last command line if there is no
	   non-white characters after the '\' character.

SR:
	1653302935 1653303073 1653254441 1653279174 5003395251
	5003345728 4701318378 1653197533 5003338079 1653177501
	5003317768 1653189845

Patch Files:
	/usr/lib/nls/msg/C/make.cat
	/usr/ccs/bin/make

what(1) Output:
	/usr/lib/nls/msg/C/make.cat:
		None
	/usr/ccs/bin/make:
		$Revision: 78.1.1.16 $
		PATCH_10_20: main.o doname.o misc.o files.o rules.o
			dosys.o gram.o dyndep.o prtmem.o nl_strchr.o
			 filehash.o hpux_rel.o 99/05/25

cksum(1) Output:
	963206234 2129 /usr/lib/nls/msg/C/make.cat
	578108242 81920 /usr/ccs/bin/make

Patch Conflicts: None

Patch Dependencies: None

Hardware Dependencies: None

Other Dependencies: None

Supersedes:
	PHCO_8893 PHCO_10836 PHCO_11760 PHCO_14612 PHCO_16371 PHCO_16923

Equivalent Patches:
	PHCO_18676:
	s700: 11.00
	s800: 11.00

Patch Package Size: 140 KBytes

Installation Instructions:
	Please review all instructions and the Hewlett-Packard
	SupportLine User Guide or your Hewlett-Packard support terms
	and conditions for precautions, scope of license,
	restrictions, and, limitation of liability and warranties,
	before installing this patch.
	------------------------------------------------------------
	1. Back up your system before installing a patch.

	2. Login as root.

	3. Copy the patch to the /tmp directory.

	4. Move to the /tmp directory and unshar the patch:

		cd /tmp
		sh PHCO_18638

	5a. For a standalone system, run swinstall to install the
	    patch:

		swinstall -x autoreboot=true -x match_target=true \
			-s /tmp/PHCO_18638.depot

	5b. For a homogeneous NFS Diskless cluster run swcluster on the
	    server to install the patch on the server and the clients:

		swcluster -i -b

	    This will invoke swcluster in the interactive mode and
	    force all clients to be shut down.

	    WARNING: All cluster clients must be shut down prior to the
		     patch installation.  Installing the patch while the
		     clients are booted is unsupported and can lead to
		     serious problems.

	    The swcluster command will invoke an swinstall session in which
	    you must specify:

		alternate root path  -  default is /export/shared_root/OS_700
		source depot path    -  /tmp/PHCO_18638.depot

	    To complete the installation, select the patch by choosing
	    "Actions -> Match What Target Has" and then "Actions -> Install"
	    from the Menubar.

	5c. For a heterogeneous NFS Diskless cluster:

		- run swinstall on the server as in step 5a to install
		  the patch on the cluster server.

		- run swcluster on the server as in step 5b to install
		  the patch on the cluster clients.

	By default swinstall will archive the original software in
	/var/adm/sw/patch/PHCO_18638.  If you do not wish to retain a
	copy of the original software, you can create an empty file
	named /var/adm/sw/patch/PATCH_NOSAVE.

	Warning: If this file exists when a patch is installed, the
	         patch cannot be deinstalled.  Please be careful
		 when using this feature.

	It is recommended that you move the PHCO_18638.text file to
	/var/adm/sw/patch for future reference.

	To put this patch on a magnetic tape and install from the
	tape drive, use the command:

		dd if=/tmp/PHCO_18638.depot of=/dev/rmt/0m bs=2k

Special Installation Instructions: None