INSTALL
=======
This version is only known to work on the following systems:

    Linux 3.x/4.x/... (i386, x86_64, debian-{7,8,9,10,...}, ubuntu-{14.04,16.04}, ...)
    Linux 2.6 (i386, x86_64, debian-5.0.4, ubuntu-10.04, fedora-13)
    Solaris 10 10/09 (i386, amd64), 11 (amd64)
    OpenSolaris 2009/06 (i386, amd64)
    OpenBSD 4.7 (i386, amd64), 6.6 (amd64)
    FreeBSD 8.0 (i386, amd64), 12.1 (amd64)
    NetBSD 5.0.2 (i386, amd64), 8.1 (amd64)
    MacOSX/macOS 10.{4,5,6,11,14,15}, 11 (ppc, i386, x86_64, arm64)
    kFreeBSD 20090729 (i386)
    GNU/Hurd (i386)

For these systems (or later), just run the "configure" script in the source
directory. It will run the appropriate script in the "conf" directory for
the current host. Perl and GNU make are required for building.

Note: There isn't a real configure script so you will no doubt encounter
problems on other systems. An ISO C and POSIX/XPG4 environment will help
greatly. If your system doesn't have snprintf(3), GNU getopt_long(3),
vsscanf(3), strcasecmp(3), strncasecmp(3), strlcpy(3) or strlcat(3),
uncomment the relevant lines in the libslack/config.h file to include them
in libslack.

If your system doesn't have POSIX 1003.2 compliant regex functions, or they
are buggy, either: install the GNU implementation,
ftp://ftp.gnu.org/gnu/regex/regex-0.12.tar.gz [290K]
(doesn't support internationalisation);
or install Henry Spencer's implementation,
ftp://ftp.zoo.toronto.edu/pub/regex.shar [157K].

If you really, really, really don't want the regular expression functions,
uncomment HAVE_REGEX_H in libslack/config.h to enable the rest of the str
module to be compiled.

If you have a linux-2.2.x system, you must have LinuxThreads-0.8 or
LinuxThreads-0.9 and the latest corresponding version of glibc.
If you have a linux-2.4.x system, you must have at least glibc-2.2.1
and glibc-linuxthreads-2.2.1. They are available from
http://ftp.gnu.org/pub/gnu/glibc/. Older versions can be used but
they have some very nasty bugs.

First, uninstall any previous version (optional):

    cd /usr/local/src/daemon-0.8.3
    make uninstall

To build and test:

    tar xzf daemon-0.8.4.tar.gz
    cd daemon-0.8.4
    ./configure # iff linux, openbsd, freebsd, netbsd, macosx, solaris, gnuhurd or kfreebsd
    make        # must be gnu make
    make test   # only tests libslack. to test daemon, see test/README

Note that the configure script is not a GNU autoconf script.
It just has hard-coded settings for certain platforms.
It does not accept all of the usual command line options.
However, it does accept certain options:

    --help
    Print a help message showing these options, then exit.

    --prefix=/path
    Changes the installation prefix to a non-standard one (needed for macports).
    This also changes the directory that the config file is installed in.
    When --prefix=/usr or --prefix=default, the config file is installed in /etc.
    Otherwise (e.g. --prefix=/usr/local or --prefix=/opt/local), the config
    file is installed under the prefix.

    --destdir=/path
    Changes the makefile $(DESTDIR) for building packages.
    It doesn't affect any paths in the final binary.

    --enable-logind
    On Linux systems where libsystemd or libelogind headers and libraries
    are installed, this option will use them for daemon's --bind option.
    It isn't enabled by default.

    --disable-logind
    This option undoes the effects of --enable-logind.

    --enable-mail-test
    This option enables testing libslack's mail() function (default).

    --disable-mail-test
    This option suppresses testing libslack's mail() function which tries
    to send an email via the localhost's mail server on port 25 (if any).
    This is useful when building packages.

    --enable-test
    Includes backup implementations of several functions (unnecessary).

    --default
    This option restores everything to its default state.
    It is used by "make dist".

    --platform=platform
    This option overrides the current platform.
    It is used by "./configure --default" and "make dist".
    See "./configure --help" for possible values.

To install daemon and its manpage (in /usr/local by default):

    make install

To install into somewhere other than /usr/local:

    make PREFIX=/opt/daemon install

To install an empty /etc/daemon.conf file and /etc/daemon.conf.d directory:

    make install-daemon-conf

To uninstall daemon:

    make uninstall

To install libslack and its manpages (into /usr/local by default):

    make install-slack

To uninstall libslack:

    make uninstall-slack

For more details:

	./configure --help
    make help

The manpage for daemon is daemon(1). There is one manpage for each module in
libslack (as well as a symlink for each function). The module manpages are
agent(3), coproc(3), daemon(3), err(3), fio(3), hsort(3), lim(3), link(3),
list(3), locker(3), map(3), mem(3), msg(3), net(3), prog(3), prop(3),
pseudo(3), sig(3) and str(3). If necessary, the manpages getopt(3),
snprintf(3) and vsscanf(3) are created as well.

PACKAGING SYSTEMS
=================
Daemon can be installed and kept up-to-date more conveniently on some
systems via their packaging systems.

To install on Debian/Ubuntu Linux systems:

    apt install daemon

To install on macOS systems with MacPorts:

    port install daemon

To install on macOS or Linux systems with Homebrew:

    brew install daemon # homebrew/core version

Or:

    brew install rafpkg/tap/daemon # my version

To install on Arch Linux systems with yay:

    yay daemon

To install on Slackware Linux systems:

    upgradepkg --install-new daemon-0.8.4-i586-1.txz
    upgradepkg --install-new daemon-0.8.4-x86_64-1.txz

There might be others.

BINARY PACKAGES
===============
Binary packages are no longer available on daemon's website. The Makefile
contains rules for creating them for several systems (i.e. Debian, Fedora,
OpenBSD, FreeBSD, NetBSD, OSX/macOS, Solaris10) but they might need updating
and they might need to be changed to incorporate signing the package.

The rest of this section shows installation from binary packages if they are
created.

To install from the Fedora RPM binary package (into /usr by default):

    rpm -i daemon-X.Y-1.x86_64.rpm # or
    rpm -i daemon-X.Y-1.i686.rpm

To install from the OpenBSD binary package (into /usr/local by default):

    mv daemon-X.Y-openbsd-amd64.tgz daemon-X.Y.tgz # or
    mv daemon-X.Y-openbsd-i386.tgz  daemon-X.Y.tgz
    # then
    pkg_add daemon-X.Y.tar.gz

To install from the FreeBSD binary package (into /usr/local by default):

    pkg_add daemon-X.Y-freebsd-amd64.tbz # or
    pkg_add daemon-X.Y-freebsd-i386.tbz

To install from the NetBSD binary package (into /usr/local by default):

    pkg_add daemon-X.Y-netbsd-amd64.tgz # or
    pkg_add daemon-X.Y-netbsd-i386.tgz

To install from the Mac OS X binary package (into /usr/local by default):

    cd /usr/local
    tar xzf /usr/local/src/daemon-X.Y-macosx-universal.tar.gz # or
    tar xzf /usr/local/src/daemon-X.Y-macosx-x86_64.tar.gz # or
    tar xzf /usr/local/src/daemon-X.Y-macosx-i386.tar.gz # or
    tar xzf /usr/local/src/daemon-X.Y-macosx-powerpc.tar.gz

To install from the Solaris10 binary package (into /usr/local by default):

    gunzip daemon-X.Y-solaris-amd64.pkg.gz
    pkgadd -d daemon-X.Y-solaris-amd64.pkg

or

    gunzip daemon-X.Y-solaris-i386.pkg.gz
    pkgadd -d daemon-X.Y-solaris-i386.pkg

REQUIREMENTS
============
Requires GNU make to compile.
Requires perl to run the scripts in the conf directory.
Requires perl to install per-function manpage links.
Requires an ISO C compiler like gcc to compile the source.
Requires pod2man (comes with perl) to make the manpages.
Requires pod2html (comes with perl) to make the html manpages.
Requires POSIX 1003.2 compliant regex functions. See INSTALL.
Requires libpthread. See INSTALL.

PLATFORM NOTES
==============
These platform notes are quite old and probably mostly irrelevant.

Linux
-----
Linux 2.2 always returns 0.0.0.0 on getsockopt(IP_MULTICAST_IF) so
net_multicast_get_interface() always returns 0 under Linux 2.2. Linux 2.4
does not have this bug.

Make sure you have a recent glibc (at least 2.1.3) and libpthread (at least
0.8) (See INSTALL).

Linux 2.2 and 2.4 have a bug-like feature in poll(2). It always times out
10ms later than specified. Libslack corrects for this as best as it can (if
> 10ms -= 10ms) but it's not good enough when you need timers with a
granularity of 10ms. In this case, you have to use
agent_create_with_select() instead of agent_create() under Linux because
select() doesn't have this bug. However, scalable I/O is impossible with
select(). So, if you need timers with a granularity of 10ms *and* scalable
I/O, you need an agent that uses select() in one thread for the timers and
separate agents that use poll() in other threads for the I/O.

Solaris
-------
Solaris (at least 2.6 and 2.7) doesn't return the hardware address or index
of network interfaces from ioctl() with a SIOCGIFINDEX command argument.
Libslack fills in the index in net_interfaces().

UNIX domain datagram sockets aren't supported very nicely. An actual
filesystem entry is needed for the client and it must be unlinked after use.
It's also possible for a malicious local user to deny a client access to the
server. The solution is to always use UNIX domain stream sockets.

Solaris has an inadequate snprintf() function so libslack provides its own
implementation. When configured for Solaris, this snprintf() function will
format exactly like the system's sprintf() function, even though it has
incorrect behaviour with respect to the ISO C standard. I thought this was
better than having thousands of module tests apparently "fail".

OpenBSD
-------
Has the same UNIX domain datagram socket problem as Solaris.

FreeBSD
-------
Has the same UNIX domain datagram socket problem as Solaris.
Can't lock fifos so fifo_open() can't guarantee a unique reader.

Mac OS X
--------
Probably has the same UNIX domain datagram problem as Solaris.

--------------------------------------------------------------------------------

    URL: https://libslack.org/daemon
    URL: https://raf.org/daemon
    GIT: https://github.com/raforg/daemon
    GIT: https://codeberg.org/raforg/daemon
    Date: 20230824
    Author: raf <raf@raf.org>