Import Tcl 8.6.12

pkgs/thread2.8.7/win/README.txt

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+
+I. Building the Tcl thread extension for Windows
+================================================
+
+Thread extension supports two build options:
+
+
+o. MinGW builds:
+----------------
+
+The extension can be compiled under Windows using the
+MinGW (http://www.mingw.org) environment. You can also
+download the ready-to-go copy of the MinGW from the
+same place you've downloaded this extension.
+
+You should compile the Tcl core with MinGW first. After
+that, you can compile the extension by running the
+configure/make from this directory. You can also use the
+CONFIG script to do this. You might want to edit the
+script to match your environment and then just do:
+
+    sh CONFIG
+
+This should go smoothly, once you got Tcl core compiled ok.
+
+
+o. Microsoft MSVC++ build:
+--------------------------
+
+Files in this directory may be useful if you have not set up
+your TEA (i.e., MinGW) environment and you're using the MSVC++
+from Micro$oft.
+
+To build the extension invoke the following command:
+
+    nmake -f makefile.vc INSTALLDIR=<path-to-installed-tcl>
+
+INSTALLDIR is the path of the Tcl distribution where
+tcl.h and other needed Tcl files are installed.
+To build against a Tcl source build instead,
+
+    nmake -f makefile.vc TCLDIR=<path-to-tcl-sources>
+
+Please look into the makefile.vc file for more options etc.
+
+Alternatively, you can open the extension workspace and project files
+(thread_win.dsw and thread_win.dsp) from within the MSVC++ and press
+the F7 key to build the extension under the control of the MSVC IDE.
+NOTE: it is likely that the .dsw and .dsp files are out of date. At
+least Visual Studio 2017 was not able to open those files.
+
+II. Building optional support libraries
+=======================================
+
+As of 2.6 release, this extension supports persistent shared
+variables. To use this functionality, you might need to download
+and compile some other supporting libraries. Currently, there is
+a simple implementation of shared variable persistency built atop
+of popular GNU Gdbm package. You can obtain the latest version of
+the Gdbm from: http://www.gnu.org/software/gdbm/gdbm.html.
+
+For the impatient, there are Windows ports of GNU Gdbm found on
+various places on the Internet. The easiest way to start is to go
+to the GnuWin32 project: http://sourceforge.net/projects/gnuwin32
+and fetch yourself a compiled GNU Gdbm DLL.
+
+-EOF-