tcl3270 Build and Install Instructions

To build tcl3270, type: 
    ./configure
    make
To install tcl3270 in the default install directory (/usr/local/bin), type: 
    make install

Notes on the Tcl Library

tcl3270 uses Tcl 8.3 by default. It assumes that the header file tcl.h has been installed in the directory /usr/local/include, and that the Tcl library libtcl8.3.a has been installed in the directory /usr/local/lib. If you have a different version of Tcl, or it is installed in different directories, you will need to pass additional options to the configure script.

To use a different version of Tcl, pass the --with-tcl= option to configure, specifying the other version, e.g: 

    ./configure --with-tcl=8.2
If you have the Tcl header files or libraries installed in directories other than those selected by default, you must pass these options to configure in environment variables. To specify a different header file directory, put a -I option in the CPPFLAGS environment variable. To specify a different library directory, put a -L option in the LDFLAGS environment variable.  For example (using bash, ksh, or sh): 
    CPPFLAGS=-I/auto/unsupported/tcl LDFLAGS=-L/auto/unsupported/lib ./configure
Using csh, it's similar: 
    (setenv CPPFLAGS -I/auto/unsupported/tcl; setenv LDFLAGS -L/auto/unsupported/lib; ./configure)
tcl3270 has not been tested with versions of tcl other than 8.2 and 8.3.

Using Extended Tcl (TclX)

tcl3270 can also use Extended Tcl (TclX).  To use Extended Tcl, pass the --with-tclx option to configure, e.g.: 
./configure --with-tclx
Note that Extended Tcl releases tend to lag behind standard Tcl releases; when this was written, the current release of Extended Tcl was 8.2.  So, to build tcl3270 with Extended Tcl 8.2, you must have Tcl 8.2 installed on your system, and you must explicitly specify the version of TclX with configure: 
./configure --with-tclx=8.2

Notes for Solaris 2.x and Sun's C Compiler

Do not use Sun's BSD-compatibility compiler, /usr/ucb/cc. This is good advice in general, but in particular, tcl3270 will not build with it. You must have a directory containing gcc (preferred) or Sun's standard compiler in your $PATH ahead of /usr/ucb.

Summary of configure Options

The tcl3270 configure script accepts the following options:
 
--help Print a help message.
--prefix=prefix Install architecture-independent files under prefix (defaults to /usr/local)
--exec-prefix=eprefix Install architecture-dependent files (executables) under eprefix (defaults to same as prefix)
--bindir=dir Install user executables (tcl3270) in dir (defaults to eprefix/bin)
--sysconfdir=dir Install configuration files (character sets) in dir/x3270 (defaults to prefix/etc).
--with-tcl=version Use a different version of the Tcl library. The default is 8.3.
--with-tclx
--with-tclx=version		 Use the Extended Tcl library. The TclX library must be the same version as the Tcl library.
If an explicit version is specified, this changes the Tcl library version as well.
--disable-ansi Leave out NVT (ANSI) support.
Note that NVT support is required for TN3270E support.
--disable-apl Leave out APL character support.
--disable-ft Leave out IND$FILE file transfer support.
--disable-local-process Leave out local process (connecting to "-e shell_command") support.
This will be automatically disabled if the local system does not support the forkpty() library call.
--disable-printer Leave out printer session (pr3287) support.
--disable-tn3270e Leave out TN3270E support.
--disable-trace Leave out tracing support.

Leaving out all of the optional features will result in a smaller binary.