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This is the directory where you configure, compile, test, and install UNIX
versions of Tk. This directory also contains source files for Tk that are
specific to UNIX.

The information in this file is maintained at:

For information on platforms where Tcl/Tk is known to compile, along with any
porting notes for getting it to work on those platforms, see:

The rest of this file contains instructions on how to do this. The release
should compile and run either "out of the box" or with trivial changes on any
UNIX-like system that approximates POSIX, BSD, or System V. We know that it
runs on workstations from Sun, H-P, DEC, IBM, and SGI, as well as PCs running
Linux, BSDI, and SCO UNIX. To compile for a PC running Windows, see the README
file in the directory ../win. To compile for MacOSX, see the README file in
the directory ../macosx.

How To Compile And Install Tk:

(a) Make sure that the Tcl release is present in the directory
    ../../tcl<version> (or else use the "--with-tcl" switch described below).
    This release of Tk will only work with the equivalently versioned Tcl
    release. Also, be sure that you have configured Tcl before you configure

(b) Check for patches as described in ../README.

(c) If you have already compiled Tk once in this directory and are now
    preparing to compile again in the same directory but for a different
    platform, or if you have applied patches, type "make distclean" to discard
    all the configuration information computed previously.

(d) Type "./configure". This runs a configuration script created by GNU
    autoconf, which configures Tk for your system and creates a Makefile. The
    configure script allows you to customize the Tk configuration for your
    site; for details on how you can do this, type "./configure -help" or
    refer to the autoconf documentation (not included here). Tk's "configure"
    script supports the following special switches in addition to the standard

	--with-tcl=DIR		Specifies the directory containing the Tcl
				binaries and Tcl's platform-dependent
				configuration information. By default the Tcl
				directory is assumed to be in the location
				given by (a) above.
	--with-x=DIR		Tells configure where to find an installation
				of the X Window System. Not normally needed.
	--enable-threads	If this switch is set, Tk will compile itself
				with multithreading support.
	--enable-shared		If this switch is specified, Tk will compile
				itself as a shared library if it can figure
				out how to do that on this platform. This is
				the default on platforms where we know how to
				build shared libraries.
	--disable-shared	If this switch is specified, Tk will compile
				itself as a static library.
	--disable-rpath		Turns off use of the rpath link option on
				platforms that would otherwise use it.
	--enable-symbols	Build with debugging symbols. By default
				standard debugging symbols are used. You can
				specify the value "mem" to include
				TCL_MEM_DEBUG memory debugging.
	--disable-symbols	Build without debugging symbols
	--enable-64bit		Enable 64bit support (where applicable)
	--disable-64bit		Disable 64bit support (where applicable)
	--enable-64bit-vis	Enable 64bit Sparc VIS support
	--disable-64bit-vis	Disable 64bit Sparc VIS support
	--disable-xft		Disable support for antialiased fonts via the
				Freetype/xft library. By default, this is
				switched on whenever the configure script can
				detect the required libraries.
	--enable-man-symlinks	Use symlinks for linking the manpages that
				should be reachable under several names.
				Compress the manpages using PROG.
				Add STRING to the name of each of the manual
				pages. If specified without giving STRING, the
				suffix will be "tk".

    Mac OS X only:

	--enable-framework	Package Tk as a framework.
	--disable-corefoundation Disable use of CoreFoundation API.
	--enable-aqua		Use Aqua windowingsystem rather than X11,
				requires --enable-corefoundation with Tcl and

    Note: by default gcc will be used if it can be located on the PATH. If you
    want to use cc instead of gcc, set the CC environment variable to "cc"
    before running configure. It is not safe to change the Makefile to use gcc
    after configure is run.

    Note: be sure to use only absolute path names (those starting with "/") in
    the --prefix and --exec-prefix options.

(e) Type "make". This will create a library archive called "libtk<version>.a"
    or "libtk<version>.so" and an interpreter application called "wish" that
    allows you to type Tcl/Tk commands interactively or execute script files.
    It will also create a stub library archive "libtkstub<version>.a" that
    developers may link against other C code to produce loadable extensions
    that call into Tk's public interface routines.

(f) If the make fails then you'll have to personalize the Makefile for your
    site or possibly modify the distribution in other ways. First check the
    porting Web page above to see if there are hints for compiling on your
    system. If you need to modify Makefile, there are comments at the
    beginning of it that describe the things you might want to change and how
    to change them.

(g) Type "make install" to install Tk's binaries and script files in standard
    places. You'll need write permission on the installation directories to do
    this. The installation directories are determined by the "configure"
    script and may be specified with the --prefix and --exec-prefix options to
    "configure". See the Makefile for information on what directories were
    chosen. You should not override these choices by modifying the Makefile,
    or by copying files post-install. The installed binaries have embedded
    within them path values relative to the install directory. If you change
    your mind about where Tk should be installed, start this procedure over
    again from step (a) so that the path embedded in the binaries agrees with
    the install location.

(h) At this point you can play with Tk by running the installed "wish"
    executable, or via the "make shell" target, and typing Tcl/Tk commands at
    the interactive prompt.

If you have trouble compiling Tk, see the URL noted above about working
platforms. It contains information that people have provided about changes
they had to make to compile Tk in various environments. We're also interested
in hearing how to change the configuration setup so that Tk compiles on
additional platforms "out of the box".

Note: Do not specify either of the TCL_LIBRARY and TK_LIBRARY environment
variables in a production installation, as this can cause conflicts between
different versions of the libraries. Instead, the libraries should have the
correct locations of their associated script directories built into them.

Test suite

Tk has a substantial self-test suite, consisting of a set of scripts in the
subdirectory "tests". To run the test suite just type "make test" in this
directory. You should then see a printout of the test files processed. If any
errors occur, you'll see a much more substantial printout for each error. In
order to avoid false error reports, be sure to run the tests with an empty
resource database (e.g., remove your .Xdefaults file or delete any entries
starting with *). Also, don't try to do anything else with your display or
keyboard while the tests are running, or you may get false violations. See the
README file in the "tests" directory for more information on the test suite.

If the test suite generates errors, most likely they are due to non-portable
tests that are interacting badly with your system configuration. We are
gradually eliminating the non-portable tests, but this release includes many
new tests so there will probably be some portability problems. As long as the
test suite doesn't core dump, it's probably safe to conclude that any errors
represent portability problems in the test suite and not fundamental flaws
with Tk.

There are also a number of visual tests for things such as screen layout,
Postscript generation, etc. These tests all have to be run by manually
enabling the "userInteraction" constraint when testing, and the results have
to be verified visually. This can be done with:

    make test TESTFLAGS="-constraints userInteraction"

Some tests will present a main window with a bunch of menus, which you can use
to select various tests.
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