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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<tr><td><span title='2024-08-23 22:29:17 +0800'>2024-08-23</span></td><td><a href='/guix/commit/gnu/packages/protobuf.scm?id=e3ab05320ddd7b1305ccfbda55df29543f5e5883'>gnu: protobuf-c: Fix cross-compilation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/packages/protobuf.scm (protobuf-c): Fix cross-compilation.
[native-inputs]: When cross-compilation, add protobuf.
[arguments]&lt;#:configure-flags&gt;: When cross-compilation, Set PROTOC variable.

Change-Id: Idd660f526b7c90277cb4399997cdb7ce72e4f1c5
Signed-off-by: Zheng Junjie &lt;zhengjunjie@iscas.ac.cn&gt;
</span></span></td><td>Zheng Junjie</td></tr>