haproxy/README
Yitzhak Sapir 32087312e3 [BUILD] add support for build under Cygwin
After considering various possibilities, we compiled haproxy under cygwin.
Attached is an updated full diff that also has the TARGET=cygwin documented.
The whole thing compiles and installs with this diff only.

In cygwin 1.7 (now in beta), there is apparently support for ipv6.  Cygwin
1.5 (later versions, anyway) already includes some support in the form of a
define USE_IPV6.  When defined, it declares the sockaddr_in6 struct and
possibly other things.  The above definition AF_INET6=23 is taken from
their /usr/include/socket.h file (where it is #if 0'd out).

We are running into a socket limit.  It appears that Cygwin (running on
Windows 2003 Server) will only allow us to set ulimit -n (maximum open
files) to 3200, which means we're a little short of 1600 connections.

The limit of 3200 is an internal Cygwin limit.  Perhaps they can raise it in
the future.  Using the nbproc option, I was able to bring up 10 servers.  It
seems to me that they were able to handle over 2000 connections (even though
each had maxconn 1500 set, and the hard Cygwin fd limit).
2009-06-14 18:27:54 +02:00

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-------------------
H A - P r o x y
How to build it
-------------------
version 1.3.15
willy tarreau
2008/05/25
To build haproxy, you will need :
- GNU make. Neither Solaris nor OpenBSD's make work with this makefile.
However, specific Makefiles for BSD and OSX are provided.
- GCC between 2.91 and 4.3. Others may work, but not tested.
- GNU ld
Also, you might want to build with libpcre support, which will provide a very
efficient regex implementation and will also fix some badness on Solaris's one.
To build haproxy, you have to choose your target OS amongst the following ones
and assign it to the TARGET variable :
- linux22 for Linux 2.2
- linux24 for Linux 2.4 and above (default)
- linux24e for Linux 2.4 with support for a working epoll (> 0.21)
- linux26 for Linux 2.6 and above
- solaris for Solaris 8 or 10 (others untested)
- freebsd for FreeBSD 5 to 6.2 (others untested)
- openbsd for OpenBSD 3.1 to 3.7 (others untested)
- cygwin for Cygwin
- generic for any other OS.
- custom to manually adjust every setting
You may also choose your CPU to benefit from some optimizations. This is
particularly important on UltraSparc machines. For this, you can assign
one of the following choices to the CPU variable :
- i686 for intel PentiumPro, Pentium 2 and above, AMD Athlon
- i586 for intel Pentium, AMD K6, VIA C3.
- ultrasparc : Sun UltraSparc I/II/III/IV processor
- generic : any other processor or no specific optimization. (default)
Alternatively, you may just set the CPU_CFLAGS value to the optimal GCC options
for your platform.
You may want to build specific target binaries which do not match your native
compiler's target. This is particularly true on 64-bit systems when you want
to build a 32-bit binary. Use the ARCH variable for this purpose. Right now
it only knows about a few x86 variants (i386,i486,i586,i686,x86_64) and sets
-m32/-m64 as well as -march=<arch> accordingly.
If your system supports PCRE (Perl Compatible Regular Expressions), then you
really should build with libpcre which is between 2 and 10 times faster than
other libc implementations. Regex are used for header processing (deletion,
rewriting, allow, deny). The only inconvenient of libpcre is that it is not
yet widely spread, so if you build for other systems, you might get into
trouble if they don't have the dynamic library. In this situation, you should
statically link libpcre into haproxy so that it will not be necessary to
install it on target systems. Available build options for PCRE are :
- USE_PCRE=1 to use libpcre, in whatever form is available on your system
(shared or static)
- USE_STATIC_PCRE=1 to use a static version of libpcre even if the dynamic
one is available. This will enhance portability.
- with no option, use your OS libc's standard regex implemntation (default).
Warning! group references on Solaris seem broken. Use static-pcre whenever
possible.
By default, the DEBUG variable is set to '-g' to enable debug symbols. It is
not wise to disable it on uncommon systems, because it's often the only way to
get a complete core when you need one. Otherwise, you can set DEBUG to '-s' to
strip the binary.
For example, I use this to build for Solaris 8 :
$ make TARGET=solaris CPU=ultrasparc USE_STATIC_PCRE=1
And I build it this way on OpenBSD or FreeBSD :
$ make -f Makefile.bsd REGEX=pcre DEBUG= COPTS.generic="-Os -fomit-frame-pointer -mgnu"
In order to build a 32-bit binary on an x86_64 Linux system :
$ make TARGET=linux26 ARCH=i386
If you need to pass other defines, includes, libraries, etc... then please
check the Makefile to see which ones will be available in your case, and
use the USE_* variables in the GNU Makefile, or ADDINC, ADDLIB, and DEFINE
variables in the BSD makefiles.
-- end