Cygwin Package Port

This page explains how to build on Cygwin packages that are not part of the official Cygwin distribution.

Socat

Socat 1.6.0.1

A port of socat 1.6.0.1 on Cygwin is easily obtained (see [1]).

After untar & cd:

./configure
make
make install
make test

Socat 2.0.0 beta 2

!!! Interaction with McAfee Anti-Virus !!! - McAfee AV detects socat 2.0.0-b2 as a potentially unwanted program, and deletes socat.exe at first execution. To prevent this, open McAfee VirusScan Console → Unwanted program policy → Unwanted program exclusions → click Exlusions... → click Add... → click Browse... → select 'Socat' and then click Ok. This should prevent McAfee AV to detect Socat as an unwanted program.

First install the following packages in Cygwin:

• libwrap-devel (optional - to enable tcp wrappers)
• readline (optional - to enable readline)
• minires, minires-devel (optional - to enable resolver)

The following changes must be made to the build & install procedure:

• Add LIBS="-lresolv" to configure call (note that /lib/libresolv.a is a link to /lib/libminires.dll.a on Cygwin). This is only needed if package minires-devel is installed. In that case, HAVE_RESOLV_H is defined, and without this change, we get the compilation error:

gcc -O -D_GNU_SOURCE  -Wall -Wno-parentheses -DHAVE_CONFIG_H -I.   -o socat socat.o libxio.a -lutil  -lssl -lcrypto -lpthread
libxio.a(xio-ip.o):xio-ip.c:(.text+0x24): undefined reference to `___res_init'
libxio.a(xio-ip.o):xio-ip.c:(.text+0x51): undefined reference to `___res_state'
...

The build & install procedure:

./configure LIBS="-lresolv"
make
make install

Note that a custom config.h and Makefile for Cygwin can also be found in the directory config/.

Tests can be run, but it needs the following changes to test.sh

--- socat-2.0.0-b2/test.sh      2008-11-16 23:33:09.312500000 +0100
+++ socat-2.0.0-b2-cygwin/test.sh       2008-11-16 23:25:21.312500000 +0100
@@ -2189,7 +2189,7 @@
 # with MacOS, this test hangs if nonblock is not used. Is an OS bug.
 tp="$td/pipe$N"
 # note: the nonblock is required by MacOS 10.1(?), otherwise it hangs (OS bug?)
-testecho "$N" "$TEST" "" "pipe:$tp,nonblock" "$opts"
+#testecho "$N" "$TEST" "" "pipe:$tp,nonblock" "$opts"
 esac
 N=$((N+1))

Apply the patch above, and run the tests:

patch -Np1 <test.sh.patch
make test