1 I n s t a l l i n g S - n a i l / S - m a i l x
2 ================================================
5 1.1 What if configuration fails?
6 1.2 What if building fails?
7 1.3 What if tests fail?
8 1.4 How can i enable debugging?
9 2. Notes on building the latest release
14 System specific notes can be found in the next section.
15 All (optional) features are documented (and adjustable) in make.rc.
16 Adjustments may also take place, and are usually done, from the command
17 line, overriding those made in make.rc (if any).
19 Without any adjustments all non-experimental features will be enabled,
20 except some which provide redundant functionality (e.g., OPT_SPAMC is
21 disabled because the generic OPT_SPAM_FILTER can do the same).
22 None of the features are "require"d by default, so that configuration
23 won't fail shall any of them not be available or usable.
24 The generated configuration is tracked: changes will be recognized
25 and cause automatic cleanups and rebuilds as necessary.
26 Experts could find it valuable to adjust some settings in config.h.
28 $ make tangerine # equals "$ make config build test install"
29 $ make citron # equals "$ make config build install"
30 $ make distclean # *Completely* cleanup working directory
34 $ make OPT_POP3=no OPT_SMTP=require tangerine
35 $ make OPT_CROSS_BUILD=y VAL_PREFIX=/some/nasty/prefix citron
37 With utility program and feature adjustments:
39 $ make awk=/usr/bin/nawk OPT_SOCKETS=no DESTDIR=./zzz tangerine
41 If OPT_DOTLOCK has been enabled then the minimal privilege-separated
42 SETUID (to VAL_PRIVSEP_USER, default "root") helper program will be build
43 and installed, and therefore the installation process needs to have the
44 appropriate privileges. In this case it may be useful to separate the
45 configuration / building and the installation tasks and give the last
46 step higher privileges via super(1), sudo(1), su(1) or a similar
49 $ make VAL_PREFIX=/usr config && make MAKEJOBS='-j 4' &&
50 super make DESTDIR=./xy install
52 would create a "s-nail" binary and install a "s-nail" manual etc. under
53 the prefix "/usr" but rooted under "[./]xy", i.e., the binary would be
54 installed as "[./]xy/usr/bin/s-nail".
55 Out-of-tree compilation is supported; to use it, create the target
56 directory of desire, change into it and run the make-emerge.sh script
57 shipped with S-nail, then proceed as with normal in-tree building.
58 The following make(1) targets exists, the default being `build':
60 - tangerine Shorthand for "$ make config build test install": create
61 or check and update configuration, build, test and install.
62 The variable $DESTDIR will be honoured (see make.rc),
63 but not be tracked in the configuration.
64 In order to parallelize the `build' step pass a $MAKEJOBS
65 variable, as shown below.
66 - citron Shorthand for "$ make config build install".
67 `build' parallelization via $MAKEJOBS, as shown below.
68 - all Shorthand for "$ make config build".
69 `build' parallelization via $MAKEJOBS, as shown below.
71 - config Only create or check and update the configuration.
72 - build Only build (using the existing configuration).
73 This can be parallelized, either by a corresponding make(1)
74 invocation when the target is run by itself, or by setting
75 the $MAKEJOBS variable otherwise, e.g., "MAKEJOBS='-j 4'".
76 $MAKEJOBS is not tracked in the configuration.
77 - install Only install using the built files of the existing
79 The variable $DESTDIR will be honoured (see make.rc),
80 but not be tracked in the configuration.
82 S-nail will create an uninstall shell script
83 (VAL_UAGENT-uninstall.sh), but which will *not* be installed
84 if $DESTDIR is set non-empty -- within $DESTDIR, that is.
85 Copy or move it manually from the S-nail root directory ./
86 into $DESTDIR as necessary.
88 - clean Remove anything which can be rebuild.
89 - distclean Remove anything which can be rebuild or reconfigured.
91 - test Run cc-test.sh in --check-only mode on the built binary.
93 Setting the make(1) variable $VERBOSE to an arbitrary value during
94 `config' time, as in "$ make VERBOSE=xy tangerine", will change the
95 output of the `all', `install' etc. targets to a more verbose one.
97 If some libraries are missing that you know are installed on your
98 system, or if other errors occur due to missing files but which you know
99 exist, please ensure that the environment variable $C_INCLUDE_PATH
100 includes the necessary "include/" paths and the environment variable
101 $LD_LIBRARY_PATH includes the necessary "lib/"rary paths.
103 The S-nail make system will inspect these two environment variables and
104 *automatically* convert them to cc(1) (c99(1)) -I and -L options (since
105 these environment variables are, different to the command line options,
106 not part of the POSIX standard).
107 To set these environment variables, the following can be done in
108 a Bourne / Korn / POSIX compatible shell:
110 $ C_INCLUDE_PATH="${C_INCLUDE_PATH}:/usr/local/include"
111 $ LD_LIBRARY_PATH="${LD_LIBRARY_PATH}:/usr/local/lib"
112 $ export C_INCLUDE_PATH LD_LIBRARY_PATH
115 Other than the standard paths /usr/{bin,include,lib} and /usr/local/[.]
116 should possibly be placed first instead, presuming that they are meant
117 to override things which usually exist in standard locations.
118 If all else fails you can also forcefully pass in include directives and
119 library paths by passing prefilled $INCS and $LIBS variables:
121 $ make INCS=-I/mypath/include LIBS="-L/mypath/lib -lmylib" tangerine
123 There are also some predefined configuration sets available, ment to be
124 used instead of doing manual adjustments.
126 - CONFIG=NULL, CONFIG=NULLI
127 Anything that can be turned off is off. MIME cannot.
128 The latter adds and "require"s iconv(3).
131 Possibly what people want who need nothing but a MIME-capable mailx(1)
132 and don't regret improved usability for the rare interactive use
133 occasions. Adds documentation strings, the built-in line editor (MLE)
134 with history support and key bindings, error tracking, basic colour
135 support and IDNA addresses, as well as generic spam filter support.
137 "Require"s iconv(3), regex(3) and the dotlock helper.
140 Sending messages directly to the mail provider via the SMTP protocol,
141 instead of requiring a local mail-transfer-agent (MTA) who does.
143 Adds SSL/TLS, SMTP, GSSAPI and .netrc file parsing on top of MINIMAL.
145 "Require"s iconv(3), SSL/TLS, SMTP (sockets) and the dotlock helper.
148 Like MINIMAL, but turns on all (other) options, also obsolete or
149 redundant ones, but none of them required.
151 1.1 What if configuration fails?
152 --------------------------------
154 The configuration process creates some files named "mk-config.*":
156 - mk-config.log output generated by the configuration compile tests.
157 - mk-config.lst configuration (chosen option, programs, paths).
158 (Removing this file reenables configuration even after
159 a screwed up configuration, e.g., due to power failure.)
160 - mk-config.h C program header produced according to mk-config.lst.
161 - mk-config.ev A set of sh(1) variables for reproducible compile runs.
162 - mk-config.inc List of C header include paths, as compiler directives.
163 - mk-config.lib List of used library information, as compiler directives.
165 Of special interest is mk-config.log since the error usually manifests
166 here in textual output. Maybe that makes it obvious what can be done
167 (header files could not be found because of missing entries in
168 $C_INCLUDE_PATH, libraries could not be linked because of incomplete
169 $LD_LIBRARY_PATH, etc.).
171 Otherwise it is getting complicated, and it would be appreciated if you
172 would contact the mailing-list!
174 If you hit an actual bug in the configuration system, and "make
175 distclean" will not help you out, please "reset" the state by doing
176 a simple "$ rm mk-*".
178 1.2 What if building fails?
179 ---------------------------
181 Even worse! This should not happen if configuration succeeded! It
182 would be very kind and highly appreciated if you would report this
185 1.3 What if tests fail?
186 -----------------------
188 That would be a disaster. Please contact the mailing-list!
189 If you have used OPT_AUTOCC (the default) and a non-debug target, you
190 could try to reconfigure with an additional cc_maxopt=1 on the command
191 line and report whether that turns the green testing light on.
193 Otherwise you could run the cc-test.sh script in --mae-test mode and
194 invoke the failing tests (testing echoes the actual test names in
195 brackets): this will produce output files of the form mae-test-TESTXY.
196 It would be nice if these outputs could be send to the mailing-list;
197 possibly stored altogether in a compressed tar(1) file. For example:
199 $ ./cc-test.sh --mae-test ./s-nail t_behave_localopts t_behave_mbox
200 $ tar -czf badtests.tar.gz mae-test-*
205 1.4 How can i enable debugging?
206 -------------------------------
208 Please ensure OPT_DEBUG=yes is enabled during compilation, as in
210 $ make CONFIG=MAXIMAL OPT_DEBUG=yes
212 If OPT_AUTOCC is enabled then the build system should automatically
213 adjust the compiler flags accordingly, please see make.rc for more.
214 There is also a `devel'opment target which does most of this by itself:
218 OPT_DEBUG (`devel') will enable memory bound debug canaries and
219 Not-Yet-Dead function graph listings etc. Whereas the latter will try
220 to write its listing into a file named after your favourite MUA in
221 your $TMPDIR (or "/tmp" or "./", in order), falling back to STDERR shall
222 creation of the file not be possible (we won't overwrite an existing
223 file), the debug facilities in general make their appearance on the
224 standard error channel; because this can be a quite long output, then,
225 it is possibly a good idea to redirect it to a file:
227 $ s-nail -dvv 2> error.log
229 Should you really discover any problems with S-nail it would be very
230 useful for development if you would contact the mailing-list!
233 2. Notes on building the latest release
234 ---------------------------------------
237 * I have turned off -Wstrict-overflow warnings unless we are debug
238 enabled (talking about OPT_AUTOCC=yes here).
239 * There are warnings on unused returns from some I/O functions.
240 These will vanish after the large v15 I/O and MIME rewrite.
241 * Some "XYZ may be used uninitialized" warnings are logically false.
243 - All 32-bit systems:
244 * There _may_ be warnings about format strings, like, e.g.,
245 auxlily.c:1610:10: warning: format '%lu' expects type 'long
246 unsigned int', but argument 3 has type 'size_t'
247 The codebase is ISO C89 which has no %z printf(3) format.
248 However we try hard to detect the real type size and define the
249 "PRI[du]Z" macros which end up with the correct size, which is
250 also compile-time asserted (see the "MCTA(sizeof(size_t) == XZ)"
251 statements in nail.h).
253 By forcing ISO C99 mode when compiling these warnings vanish, e.g.,
254 with gcc(1) and clang(1): with OPT_AUTOCC pass
255 "EXTRA_CFLAGS=-std=c99", otherwise ensure -std=c99 in $CFLAGS.
257 Development and/or regular tests:
259 . AlpineLinux <https://www.alpinelinux.org/> (3.6, edge; x86-64).
260 . ArchLinux <https://www.archlinux.org/> (weekly updated; x86-64).
261 . CRUX Linux <https://www.crux.nu/> (3.3; x86-64).
262 . FreeBSD <https://www.freebsd.org/> (10.3; x86).
266 . OpenBSD <https://www.openbsd.org/> (6.1; x86).
267 . Solaris <http://opencsw.org/>
268 @ First of all: thanks to OpenCSW.org for offering SSH access to
269 their Solaris build cluster!
270 * In order to be able to run the tests you will need a cksum(1) that
271 supports CRC-32 (POSIX). We look into /opt/csw/gnu/cksum, but if
272 that cannot be found you have to adjust the $cksum variable (see
273 above) to something that works.
274 * With OPT_AUTOCC: we try to use Sun cc(1) whenever we find it.
275 If your gcc(1) installation is doing alright you have to turn
276 OPT_AUTOCC off and use $CC, $CFLAGS and $LDFLAGS.
277 * Some notes collected on earlier trials:
278 + We may forcefully disable stack protectors on SunOS/gcc because of
279 linking errors seen in earlier tests.
280 + If you get the compiler / system header installation error
281 Undefined first referenced
283 __builtin_stdarg_start auxlily.o
284 then you have to overwrite this symbol with __builtin_va_start,
285 e.g., in conjunction with OPT_AUTOCC add this:
286 EXTRA_CFLAGS='-D__builtin_stdarg_start=__builtin_va_start'
287 - The OpenCSW build cluster consists of SunOS 5.9 - 5.11 machines
288 under SPARC and i386. And it looked good on 2017-09-15.
289 . Void Linux <https://www.voidlinux.eu/> (x86; not in 2017 FIXME)