mirror of git://git.tartarus.org/simon/putty.git, used for client testing
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Simon Tatham 68c47ac470 Fix handling of max_data_size == 0.
When I reworked the support for rekeying after a certain amount of
data had been sent, I forgot the part where configuring the max data
limit to zero means 'never rekey due to data transfer volume'. So I
was incautiously checking the 'running' flag in the new
DataTransferStats to find out whether we needed to rekey, forgetting
that sometimes running=false means the transfer limit has expired, and
sometimes it means there never was one in the first place.

To fix this, I've got rid of the boolean return value from DTS_CONSUME
and turned it into an 'expired' flag in DataTransferStats, separate
from the 'running' flag. Now everything consistently checks 'expired'
to find out whether to rekey, and there's a new reset function that
reliably clears 'expired' but sets 'running' depending on whether the
size is nonzero.

(Also, while I'm at it, I've turned the DTS_CONSUME macro into an
inline function, because that's becoming my general preference now
that C99 is allowed in this code base.)
2019-01-26 16:21:46 +00:00
charset Add missing 'static' on file-internal declarations. 2018-11-03 13:45:00 +00:00
contrib Replace all uses of Perl <> with <<>>. 2019-01-25 20:20:37 +00:00
doc Mention 'no VLAs' in the C-standards UDP section. 2019-01-02 22:14:15 +00:00
icons Make an OS X icon for pterm as well as PuTTY. 2016-03-23 22:02:46 +00:00
test cryptsuite: stop failing if hardware AES is unavailable. 2019-01-25 20:31:05 +00:00
unix Support hardware SHA-256 and SHA-1 on Arm platforms. 2019-01-23 22:36:17 +00:00
windows Windows: move dputs back into winmisc.c. 2019-01-23 23:29:57 +00:00
.gitignore Add .rcpp files to .gitignore. 2019-01-07 20:05:22 +00:00
Buildscr Test suite for mpint.c and ecc.c. 2019-01-03 16:59:33 +00:00
Buildscr.cv Rename Makefile.cyg to Makefile.mgw. 2016-04-10 15:10:45 +01:00
CHECKLST.txt Rework the release checklist for current practice. 2017-07-03 07:45:40 +01:00
LATEST.VER Update version number for 0.70 release. 2017-07-04 20:29:54 +01:00
LICENCE It's a new year. 2019-01-01 15:13:32 +00:00
README Remove Makefile.bor. 2017-09-13 19:26:28 +01:00
Recipe Run cryptsuite in the autotools makefile's 'make check'. 2019-01-25 20:20:37 +00:00
agentf.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
aqsync.c Build outgoing SSH agent requests in a strbuf. 2018-05-25 14:36:16 +01:00
be_all.c Name vtable structure types more consistently. 2018-10-06 07:28:51 +01:00
be_all_s.c Name vtable structure types more consistently. 2018-10-06 07:28:51 +01:00
be_misc.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
be_none.c Name vtable structure types more consistently. 2018-10-06 07:28:51 +01:00
be_nos_s.c Label random-noise sources with an enum of ids. 2019-01-23 22:36:17 +00:00
be_nossh.c Label random-noise sources with an enum of ids. 2019-01-23 22:36:17 +00:00
be_ssh.c Name vtable structure types more consistently. 2018-10-06 07:28:51 +01:00
callback.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
cgtest.c cmdgen: rescue test suite from bit rot. 2016-03-30 08:34:14 +01:00
cmdgen.c Replace PuTTY's PRNG with a Fortuna-like system. 2019-01-23 22:36:17 +00:00
cmdline.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
conf.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
config.c Remove some redundant variables and assignments. 2018-12-01 17:00:01 +00:00
configure.ac Forbid variable length arrays 2019-01-02 22:14:15 +00:00
cproxy.c Centralised HMAC implementation. 2019-01-20 17:09:24 +00:00
defs.h Replace PuTTY's PRNG with a Fortuna-like system. 2019-01-23 22:36:17 +00:00
dialog.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
dialog.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ecc.c Fix non-generality bug in ecc_weierstrass_point_valid. 2019-01-03 15:40:22 +00:00
ecc.h Fix two misstatements of the Montgomery curve equation. 2019-01-03 15:41:16 +00:00
errsock.c Improve sk_peer_info. 2018-10-21 10:02:10 +01:00
fuzzterm.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
import.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
ldisc.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ldisc.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ldiscucs.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
licence.pl Autogenerate licence text in doc subdir from LICENCE. 2015-12-22 13:33:42 +00:00
logging.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
mainchan.c Start using C99 variadic macros. 2018-12-08 20:48:41 +00:00
marshal.c New marshalling function put_datapl(). 2019-01-03 14:29:06 +00:00
marshal.h Centralised HMAC implementation. 2019-01-20 17:09:24 +00:00
memory.c Move standalone parts of misc.c into utils.c. 2019-01-03 10:54:42 +00:00
minibidi.c Add missing 'static' on file-internal declarations. 2018-11-03 13:45:00 +00:00
misc.c Move standalone parts of misc.c into utils.c. 2019-01-03 10:54:42 +00:00
misc.h New helper function ptrlen_strcmp(). 2019-01-03 14:29:06 +00:00
miscucs.c New centralised helper function dup_mb_to_wc(). 2015-07-27 20:06:02 +01:00
mkauto.sh Move the Unix configure script up to the top level. 2014-02-22 18:01:32 +00:00
mkfiles.pl Do not define DEBUG in MinGW builds by default. 2019-01-26 14:24:06 +00:00
mksrcarc.sh Rename the 'testdata' subdirectory to 'test'. 2019-01-03 16:56:02 +00:00
mkunxarc.sh Turn mkunxarc.sh back into an ordinary sh script. 2014-10-01 20:52:16 +00:00
mpint.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
mpint.h Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
mpint_i.h Complete rewrite of the AES code. 2019-01-13 14:31:58 +00:00
network.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
nocmdline.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
nocproxy.c Get rid of #ifdef DEFINE_PLUG_METHOD_MACROS. 2018-10-06 07:28:51 +01:00
nogss.c Rewrite gprefs() in settings.c so that its input mapping includes 2011-06-25 17:37:31 +00:00
noprint.c A few small changes to make the PuTTY source base more usable as a 2005-12-09 20:04:19 +00:00
noshare.c Get rid of lots of implicit pointer types. 2018-10-04 19:10:23 +01:00
noterm.c Make calling term_nopaste() a cross-platform feature. 2013-08-17 16:06:40 +00:00
notiming.c Two related changes to timing code: 2012-09-18 21:42:48 +00:00
nullplug.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
pageant.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
pageant.h Remove a lot of pointless 'struct' keywords. 2019-01-04 08:04:39 +00:00
pgssapi.c Fix a missing } in a GSSAPI-related comment. 2018-04-26 07:11:09 +01:00
pgssapi.h Adopt C99 <stdint.h> integer types. 2018-11-03 13:25:50 +00:00
pinger.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
portfwd.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
pproxy.c Get rid of lots of implicit pointer types. 2018-10-04 19:10:23 +01:00
proxy.c Replace several ad-hoc string formatters with strbuf. 2018-12-01 16:52:35 +00:00
proxy.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
pscp.c pscp: replace crash with diagnostic on opendir failure. 2018-12-27 16:52:23 +00:00
psftp.c Replace all 'sizeof(x)/sizeof(*x)' with lenof. 2019-01-04 08:04:39 +00:00
psftp.h pscp: replace crash with diagnostic on opendir failure. 2018-12-27 16:52:23 +00:00
putty.h Replace PuTTY's PRNG with a Fortuna-like system. 2019-01-23 22:36:17 +00:00
puttymem.h Switch sresize to using TYPECHECK. 2019-01-03 10:54:42 +00:00
puttyps.h Delete the old 'macosx' directory completely. 2016-03-25 09:06:03 +00:00
raw.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
release.pl Add a --no-ftp mode to the release.pl download checks. 2017-07-08 09:27:57 +01:00
resource.h Initial checkin: beta 0.43 1999-01-08 13:02:13 +00:00
rlogin.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
scpserver.c New marshalling function put_datapl(). 2019-01-03 14:29:06 +00:00
sercfg.c Move all extern declarations into header files. 2018-11-03 13:47:29 +00:00
sesschan.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
sessprep.c Factor out common pre-session-launch preparation. 2017-12-03 14:54:49 +00:00
settings.c Add some more miscellaneous asserts. 2018-12-01 17:04:44 +00:00
sftp.c Replace all 'sizeof(x)/sizeof(*x)' with lenof. 2019-01-04 08:04:39 +00:00
sftp.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
sftpcommon.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
sftpserver.c Adopt C99 <stdbool.h>'s true/false. 2018-11-03 13:45:00 +00:00
sign.sh GPG key rollover. 2018-08-25 14:38:47 +01:00
ssh.c Move standalone parts of misc.c into utils.c. 2019-01-03 10:54:42 +00:00
ssh.h Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
ssh1bpp.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
ssh1censor.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ssh1connection-client.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
ssh1connection-server.c Uppity: expect SSH1_CMSG_EXIT_CONFIRMATION. 2019-01-18 19:14:41 +00:00
ssh1connection.c Start using C99 variadic macros. 2018-12-08 20:48:41 +00:00
ssh1connection.h Uppity: expect SSH1_CMSG_EXIT_CONFIRMATION. 2019-01-18 19:14:41 +00:00
ssh1login-server.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
ssh1login.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
ssh2bpp-bare.c Stop BPPs from handling EOF before reading all data. 2018-11-28 20:19:59 +00:00
ssh2bpp.c Fix handling of max_data_size == 0. 2019-01-26 16:21:46 +00:00
ssh2censor.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ssh2connection-client.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
ssh2connection-server.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
ssh2connection.c Start using C99 variadic macros. 2018-12-08 20:48:41 +00:00
ssh2connection.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ssh2kex-client.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
ssh2kex-server.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
ssh2transhk.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
ssh2transport.c Fix handling of max_data_size == 0. 2019-01-26 16:21:46 +00:00
ssh2transport.h Merge the ssh1_cipher type into ssh2_cipher. 2019-01-18 19:41:23 +00:00
ssh2userauth-server.c New marshalling function put_datapl(). 2019-01-03 14:29:06 +00:00
ssh2userauth.c Remove a lot of pointless 'struct' keywords. 2019-01-04 08:04:39 +00:00
sshaes.c Bitsliced AES: optimise the constant out of the S-box. 2019-01-25 20:20:37 +00:00
ssharcf.c Merge the ssh1_cipher type into ssh2_cipher. 2019-01-18 19:41:23 +00:00
sshauxcrypt.c Access all hashes and MACs through the standard API. 2019-01-20 17:09:24 +00:00
sshbcrypt.c Access all hashes and MACs through the standard API. 2019-01-20 17:09:24 +00:00
sshblowf.c Merge the ssh1_cipher type into ssh2_cipher. 2019-01-18 19:41:23 +00:00
sshblowf.h Turn SSH-2 ciphers into a classoid. 2018-09-19 23:08:07 +01:00
sshbpp.h Fix handling of max_data_size == 0. 2019-01-26 16:21:46 +00:00
sshccp.c Turn ssh2_mac's text_name field into a method. 2019-01-20 17:09:24 +00:00
sshchan.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
sshcommon.c Access all hashes and MACs through the standard API. 2019-01-20 17:09:24 +00:00
sshcr.h Tweak crWaitUntil macros for greater robustness. 2018-09-24 18:50:25 +01:00
sshcrc.c Rewrite CRC implementation to be constant-time. 2019-01-16 06:22:49 +00:00
sshcrcda.c Add tests of the CRC compensation detector. 2019-01-16 06:32:02 +00:00
sshdes.c Put DES diagnostics behind an ifdef of their own. 2019-01-26 14:26:14 +00:00
sshdh.c Replace all 'sizeof(x)/sizeof(*x)' with lenof. 2019-01-04 08:04:39 +00:00
sshdss.c Access all hashes and MACs through the standard API. 2019-01-20 17:09:24 +00:00
sshdssg.c Complete rewrite of PuTTY's bignum library. 2018-12-31 14:54:59 +00:00
sshecc.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
sshecdsag.c Complete rewrite of PuTTY's bignum library. 2018-12-31 14:54:59 +00:00
sshgss.h Move most of ssh.c out into separate source files. 2018-09-24 19:45:22 +01:00
sshgssc.c Support GSS key exchange, for Kerberos 5 only. 2018-04-26 07:21:16 +01:00
sshgssc.h Support GSS key exchange, for Kerberos 5 only. 2018-04-26 07:21:16 +01:00
sshhmac.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
sshmac.c sshmac.c: remove excessive return statement 2019-01-02 22:50:08 +00:00
sshmd5.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
sshnogss.c Post-release destabilisation! Completely remove the struct type 2011-07-14 18:52:21 +00:00
sshppl.h Remove a lot of pointless 'struct' keywords. 2019-01-04 08:04:39 +00:00
sshprime.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
sshprng.c Replace PuTTY's PRNG with a Fortuna-like system. 2019-01-23 22:36:17 +00:00
sshpubk.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
sshrand.c Replace PuTTY's PRNG with a Fortuna-like system. 2019-01-23 22:36:17 +00:00
sshrsa.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00
sshrsag.c Remove a lot of pointless 'struct' keywords. 2019-01-04 08:04:39 +00:00
sshserver.c Remove a lot of pointless 'struct' keywords. 2019-01-04 08:04:39 +00:00
sshserver.h Remove a lot of pointless 'struct' keywords. 2019-01-04 08:04:39 +00:00
sshsh256.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
sshsh512.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
sshsha.c Identify hash function implementations in the Event Log. 2019-01-23 22:36:17 +00:00
sshshare.c Move all extern declarations into header files. 2018-11-03 13:47:29 +00:00
sshsignals.h New system for handling SSH signals. 2018-10-21 10:02:10 +01:00
sshttymodes.h New system for handling SSH terminal modes. 2018-10-21 10:02:10 +01:00
sshverstring.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
sshzlib.c Replace all 'sizeof(x)/sizeof(*x)' with lenof. 2019-01-04 08:04:39 +00:00
storage.h Rework mungestr() and unmungestr(). 2018-11-03 13:45:00 +00:00
telnet.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
terminal.c Replace assert(false) with an unreachable() macro. 2019-01-03 08:12:28 +00:00
terminal.h Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
testback.c New abstraction 'Seat', to pass to backends. 2018-10-11 19:58:42 +01:00
testcrypt.c cryptsuite: test hardware and software SHA, if possible. 2019-01-23 22:36:17 +00:00
testcrypt.h cryptsuite: test hardware and software SHA, if possible. 2019-01-23 22:36:17 +00:00
testzlib.c Move standalone parts of misc.c into utils.c. 2019-01-03 10:54:42 +00:00
time.c Comment explaining location in top-level directory. 2005-02-07 15:23:45 +00:00
timing.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
tree234.c Remove some redundant variables and assignments. 2018-12-01 17:00:01 +00:00
tree234.h tree234.c: new search234() system. 2018-09-19 23:08:28 +01:00
utils.c Revert "Fix double definition of smemclr() on Windows." 2019-01-04 00:04:44 +00:00
version.c Show the git commit hash in local dev builds too. 2017-01-21 14:57:31 +00:00
version.h Server prep: pass "implementation name" to ssh_verstring_new. 2018-10-21 10:02:10 +01:00
wcwidth.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
wildcard.c Convert a lot of 'int' variables to 'bool'. 2018-11-03 13:45:00 +00:00
x11fwd.c Replace random_byte() with random_read(). 2019-01-23 22:36:17 +00:00

README

This is the README for the source archive of PuTTY, a free Windows
and Unix Telnet and SSH client.

If you want to rebuild PuTTY from source, we provide a variety of
Makefiles and equivalents. (If you have fetched the source from
Git, you'll have to generate the Makefiles yourself -- see
below.)

There are various compile-time directives that you can use to
disable or modify certain features; it may be necessary to do this
in some environments. They are documented in `Recipe', and in
comments in many of the generated Makefiles.

For building on Windows:

 - windows/Makefile.vc is for command-line builds on MS Visual C++
   systems. Change into the `windows' subdirectory and type `nmake
   -f Makefile.vc' to build all the PuTTY binaries.

   As of 2017, we successfully compile PuTTY with both Visual Studio
   7 (2003) and Visual Studio 14 (2015), so our guess is that it will
   probably build with versions in between those as well.

   (The binaries from Visual Studio 14 are only compatible with
   Windows XP and up. Binaries from Visual Studio 7 ought to work
   with anything from Windows 95 onward.)

 - Inside the windows/MSVC subdirectory are MS Visual Studio project
   files for doing GUI-based builds of the various PuTTY utilities.
   These have been tested on Visual Studio 7 and 10.

   You should be able to build each PuTTY utility by loading the
   corresponding .dsp file in Visual Studio. For example,
   MSVC/putty/putty.dsp builds PuTTY itself, MSVC/plink/plink.dsp
   builds Plink, and so on.

 - windows/Makefile.mgw is for MinGW / Cygwin installations. Type
   `make -f Makefile.mgw' while in the `windows' subdirectory to
   build all the PuTTY binaries.

   MinGW and friends can lag behind other toolchains in their support
   for the Windows API. Compile-time levers are provided to exclude
   some features; the defaults are set appropriately for the
   'mingw-w64' cross-compiler provided with Ubuntu 14.04. If you are
   using an older toolchain, you may need to exclude more features;
   alternatively, you may find that upgrading to a recent version of
   the 'w32api' package helps.

 - windows/Makefile.lcc is for lcc-win32. Type `make -f
   Makefile.lcc' while in the `windows' subdirectory. (You will
   probably need to specify COMPAT=-DNO_MULTIMON.)

 - Inside the windows/DEVCPP subdirectory are Dev-C++ project
   files for doing GUI-based builds of the various PuTTY utilities.

The PuTTY team actively use Makefile.vc (with VC7/10) and Makefile.mgw
(with mingw32), so we'll probably notice problems with those
toolchains fairly quickly. Please report any problems with the other
toolchains mentioned above.

For building on Unix:

 - unix/configure is for Unix and GTK. If you don't have GTK, you
   should still be able to build the command-line utilities (PSCP,
   PSFTP, Plink, PuTTYgen) using this script. To use it, change into
   the `unix' subdirectory, run `./configure' and then `make'. Or you
   can do the same in the top-level directory (we provide a little
   wrapper that invokes configure one level down), which is more like
   a normal Unix source archive but doesn't do so well at keeping the
   per-platform stuff in each platform's subdirectory; it's up to you.

 - unix/Makefile.gtk and unix/Makefile.ux are for non-autoconfigured
   builds. These makefiles expect you to change into the `unix'
   subdirectory, then run `make -f Makefile.gtk' or `make -f
   Makefile.ux' respectively. Makefile.gtk builds all the programs but
   relies on Gtk, whereas Makefile.ux builds only the command-line
   utilities and has no Gtk dependence.

 - For the graphical utilities, any of Gtk+-1.2, Gtk+-2.0, and Gtk+-3.0
   should be supported. If you have more than one installed, you can
   manually specify which one you want by giving the option
   '--with-gtk=N' to the configure script where N is 1, 2, or 3.
   (The default is the newest available, of course.) In the absence
   of any Gtk version, the configure script will automatically
   construct a Makefile which builds only the command-line utilities;
   you can manually create this condition by giving configure the
   option '--without-gtk'.

 - pterm would like to be setuid or setgid, as appropriate, to permit
   it to write records of user logins to /var/run/utmp and
   /var/log/wtmp. (Of course it will not use this privilege for
   anything else, and in particular it will drop all privileges before
   starting up complex subsystems like GTK.) By default the makefile
   will not attempt to add privileges to the pterm executable at 'make
   install' time, but you can ask it to do so by running configure
   with the option '--enable-setuid=USER' or '--enable-setgid=GROUP'.

 - The Unix Makefiles have an `install' target. Note that by default
   it tries to install `man' pages; if you have fetched the source via
   Git then you will need to have built these using Halibut
   first - see below.

 - It's also possible to build the Windows version of PuTTY to run
   on Unix by using Winelib.  To do this, change to the `windows'
   directory and run `make -f Makefile.mgw CC=winegcc RC=wrc'.

All of the Makefiles are generated automatically from the file
`Recipe' by the Perl script `mkfiles.pl' (except for the Unix one,
which is generated by the `configure' script; mkfiles.pl only
generates the input to automake). Additions and corrections to Recipe,
mkfiles.pl and/or configure.ac are much more useful than additions and
corrections to the actual Makefiles, Makefile.am or Makefile.in.

The Unix `configure' script and its various requirements are generated
by the shell script `mkauto.sh', which requires GNU Autoconf, GNU
Automake, and Gtk; if you've got the source from Git rather
than using one of our source snapshots, you'll need to run this
yourself. The input file to Automake is generated by mkfiles.pl along
with all the rest of the makefiles, so you will need to run mkfiles.pl
and then mkauto.sh.

Documentation (in various formats including Windows Help and Unix
`man' pages) is built from the Halibut (`.but') files in the `doc'
subdirectory using `doc/Makefile'. If you aren't using one of our
source snapshots, you'll need to do this yourself. Halibut can be
found at <https://www.chiark.greenend.org.uk/~sgtatham/halibut/>.

The PuTTY home web site is

    https://www.chiark.greenend.org.uk/~sgtatham/putty/

If you want to send bug reports or feature requests, please read the
Feedback section of the web site before doing so. Sending one-line
reports saying `it doesn't work' will waste your time as much as
ours.

See the file LICENCE for the licence conditions.