dropbear: INSTALL annotate

annotate INSTALL @ 1903:9382271da9ef

Only set soft core limit not hard limit Otherwise child shells can't enable coredumps if desired. Fixes #145 on github

author	Matt Johnston <matt@ucc.asn.au>
date	Thu, 24 Mar 2022 14:18:45 +0800
parents	f78e67527731
children

rev	line source
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	1 Basic Dropbear build instructions:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	2
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	3 - Edit localoptions.h to set which features you want. Available options
1524 d35cf9a5e0b5 rename default_options.h.in in docs too Matt Johnston <matt@ucc.asn.au> parents: 1493 diff changeset	4 are described in default_options.h, these will be overridden by
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	5 anything set in localoptions.h
1565 2fd52c383163 mention localoptions.h being build directory, fix underscore in CHANGES Matt Johnston <matt@ucc.asn.au> parents: 1524 diff changeset	6 localoptions.h should be located in the build directory if you are
2fd52c383163 mention localoptions.h being build directory, fix underscore in CHANGES Matt Johnston <matt@ucc.asn.au> parents: 1524 diff changeset	7 building out of tree.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	8
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	9 - Configure for your system:
72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	10 ./configure (optionally with --disable-zlib or --disable-syslog,
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	11 or --help for other options)
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	12
1814 f78e67527731 Add configure script to version control. Set timezone for release tarball Matt Johnston <matt@ucc.asn.au> parents: 1792 diff changeset	13 (you'll need to first run "autoconf; autoheader" if you edit configure.ac)
f78e67527731 Add configure script to version control. Set timezone for release tarball Matt Johnston <matt@ucc.asn.au> parents: 1792 diff changeset	14
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	15 - Compile:
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	16
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	17 make PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp"
72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	18
72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	19 - Optionally install, or copy the binaries another way
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	20
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	21 make install (/usr/local/bin is usual default):
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	22
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	23 or
72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	24
72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	25 make PROGRAMS="dropbear dbclient dropbearkey dropbearconvert scp" install
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	26
72 9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	27 (you can leave items out of the PROGRAMS list to avoid compiling them. If you
9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	28 recompile after changing the PROGRAMS list, you MUST "make clean" before
9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	29 recompiling - bad things will happen otherwise)
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	30
1717 295377ecbf49 Add DEVELOPING.md Matt Johnston <matt@ucc.asn.au> parents: 1667 diff changeset	31 DEVELOPING.md has some notes on other developer topics, including debugging.
295377ecbf49 Add DEVELOPING.md Matt Johnston <matt@ucc.asn.au> parents: 1667 diff changeset	32
72 9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	33 See MULTI for instructions on making all-in-one binaries.
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	34
1447 8f88f4290b22 document --enable-static in place of STATIC=1 Matt Johnston <matt@ucc.asn.au> parents: 443 diff changeset	35 If you want to compile statically use ./configure --enable-static
8f88f4290b22 document --enable-static in place of STATIC=1 Matt Johnston <matt@ucc.asn.au> parents: 443 diff changeset	36
8f88f4290b22 document --enable-static in place of STATIC=1 Matt Johnston <matt@ucc.asn.au> parents: 443 diff changeset	37 By default Dropbear adds various build flags that improve robustness
1493 72fd994fe7bd Update build instructions for localoptions, and tidy Matt Johnston <matt@ucc.asn.au> parents: 1447 diff changeset	38 against programming bugs (good for security). If these cause problems
1447 8f88f4290b22 document --enable-static in place of STATIC=1 Matt Johnston <matt@ucc.asn.au> parents: 443 diff changeset	39 they can be disabled with ./configure --disable-harden
72 9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	40
443 2d943453cecf Fix spelling typo Matt Johnston <matt@ucc.asn.au> parents: 245 diff changeset	41 Binaries can be stripped with "make strip"
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	42
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	43 ============================================================================
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	44
245 b24730e11c83 add note about compiling for 386 Matt Johnston <matt@ucc.asn.au> parents: 72 diff changeset	45 If you're compiling for a 386-class CPU, you will probably need to add
b24730e11c83 add note about compiling for 386 Matt Johnston <matt@ucc.asn.au> parents: 72 diff changeset	46 CFLAGS=-DLTC_NO_BSWAP so that libtomcrypt doesn't use 486+ instructions.
b24730e11c83 add note about compiling for 386 Matt Johnston <matt@ucc.asn.au> parents: 72 diff changeset	47
b24730e11c83 add note about compiling for 386 Matt Johnston <matt@ucc.asn.au> parents: 72 diff changeset	48 ============================================================================
b24730e11c83 add note about compiling for 386 Matt Johnston <matt@ucc.asn.au> parents: 72 diff changeset	49
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	50 Compiling with uClibc:
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	51
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	52 Firstly, make sure you have at least uclibc 0.9.17, as getusershell() in prior
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	53 versions is broken. Also note that you may get strange issues if your uClibc
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	54 headers don't match the library you are running with, ie the headers might
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	55 say that shadow password support exists, but the libraries don't have it.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	56
72 9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	57 Compiling for uClibc should be the same as normal, just set CC to the magic
9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	58 uClibc toolchain compiler (ie export CC=i386-uclibc-gcc or whatever).
9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	59 You can use "make STATIC=1" to make statically linked binaries, and it is
9597c2e3b9d4 Some doc changes Matt Johnston <matt@ucc.asn.au> parents: 69 diff changeset	60 advisable to strip the binaries too. If you're looking to make a small binary,
1667 986126448688 Update remaining advise to edit options.h Alexander Dahl <ada@thorsis.com> parents: 1565 diff changeset	61 you should remove unneeded ciphers and MD5, by editing localoptions.h
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	62
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	63 It is possible to compile zlib in, by copying zlib.h and zconf.h into a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	64 subdirectory (ie zlibincludes), and
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	65
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	66 export CFLAGS="-Izlibincludes -I../zlibincludes"
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	67 export LDFLAGS=/usr/lib/libz.a
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	68
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	69 before ./configure and make.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	70
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	71 If you disable zlib, you must explicitly disable compression for the client -
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	72 OpenSSH is possibly buggy in this regard, it seems you need to disable it
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	73 globally in ~/.ssh/config, not just in the host entry in that file.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	74
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	75 You may want to manually disable lastlog recording when using uClibc, configure
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	76 with --disable-lastlog.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	77
69 59d16db56e9f Simple text changes Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	78 One common problem is pty allocation. There are a number of types of pty
59d16db56e9f Simple text changes Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	79 allocation which can be used -- if they work properly, the end result is the
59d16db56e9f Simple text changes Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	80 same for each type. Running configure should detect the best type to use
59d16db56e9f Simple text changes Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	81 automatically, however for some systems, this may be incorrect. Some
59d16db56e9f Simple text changes Matt Johnston <matt@ucc.asn.au> parents: 4 diff changeset	82 things to note:
4 fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	83
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	84 If your system expects /dev/pts to be mounted (this is a uClibc option),
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	85 make sure that it is.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	86
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	87 Make sure that your libc headers match the library version you are using.
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	88
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	89 If openpty() is being used (HAVE_OPENPTY defined in config.h) and it fails,
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	90 you can try compiling with --disable-openpty. You will probably then need
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	91 to create all the /dev/pty?? and /dev/tty?? devices, which can be
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	92 problematic for devfs. In general, openpty() is the best way to allocate
fe6bca95afa7 Makefile.in contains updated files required Matt Johnston <matt@ucc.asn.au> parents: diff changeset	93 PTYs, so it's best to try and get it working.

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annotate INSTALL @ 1903:9382271da9ef