This patch hard-codes the Tk library directory during package initialization.

See <http://core.tcl.tk/tk/tktview/765642ffffffffffffff>.

diff --git a/generic/tkWindow.c b/generic/tkWindow.c
index b5cbbab..96b5501 100644
--- a/generic/tkWindow.c
+++ b/generic/tkWindow.c
@@ -988,6 +988,7 @@ TkCreateMainWindow(
 
     Tcl_SetVar2(interp, "tk_patchLevel", NULL, TK_PATCH_LEVEL, TCL_GLOBAL_ONLY);
     Tcl_SetVar2(interp, "tk_version",    NULL, TK_VERSION,     TCL_GLOBAL_ONLY);
+    Tcl_SetVar2(interp, "tk_library",    NULL, TK_LIBRARY,     TCL_GLOBAL_ONLY);
 
     tsdPtr->numMainWindows++;
     return tkwin;
diff --git a/unix/Makefile.in b/unix/Makefile.in
index f21fdbb..c61b0df 100644
--- a/unix/Makefile.in
+++ b/unix/Makefile.in
@@ -1029,7 +1029,7 @@ tkVisual.o: $(GENERIC_DIR)/tkVisual.c
 	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tkVisual.c
 
 tkWindow.o: $(GENERIC_DIR)/tkWindow.c
-	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tkWindow.c
+	$(CC) -c $(CC_SWITCHES) -DTK_LIBRARY=\"${TK_LIBRARY}\" $(GENERIC_DIR)/tkWindow.c
 
 tkButton.o: $(GENERIC_DIR)/tkButton.c
 	$(CC) -c $(CC_SWITCHES) $(GENERIC_DIR)/tkButton.c
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<div class='path'>path: <a href='/guix/log/?id=72919598c8eb2aa239495ae210f8525b41708680'>root</a>/<a href='/guix/log/tests?id=72919598c8eb2aa239495ae210f8525b41708680'>tests</a>/<a href='/guix/log/tests/bournish.scm?id=72919598c8eb2aa239495ae210f8525b41708680'>bournish.scm</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/guix/log/tests/bournish.scm?id=72919598c8eb2aa239495ae210f8525b41708680&amp;showmsg=1'>Expand</a>)</th><th class='left'>Author</th></tr>
<tr><td><span title='2017-01-26 13:49:56 +0100'>2017-01-26</span></td><td><a href='/guix/commit/tests/bournish.scm?id=0db2ff65e7101951fedf4357aa37aaf92f7df431'>bournish: Extend 'rm' command.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/build/bournish.scm (rm-command): New procedure.
(%commands): Use it.
* tests/bournish.scm: Add tests for "rm" and "rm -r".
</span></span></td><td>Ricardo Wurmus</td></tr>
<tr><td><span title='2016-06-06 18:14:52 +0200'>2016-06-06</span></td><td><a href='/guix/commit/tests/bournish.scm?id=f82c58539e1f7b9b864e68ea2ab0c6a17c15fbb5'>bournish: Allow compilation of multiple expressions.</a><span class='msg-avail'>...<span class='msg-tooltip'>* guix/build/bournish.scm (%bournish-language): Add a joiner to SCHEME.
Compile only to Scheme.
* tests/bournish.scm: New file.
* Makefile.am (SCM_TESTS): Add it.
</span></span></td><td>Ludovic Courtès</td></tr>