Index: unix/configure.in
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/configure.in,v
retrieving revision 1.72
diff -u -r1.72 configure.in
--- unix/configure.in	2001/08/12 21:17:43	1.72
+++ unix/configure.in	2001/09/26 00:44:40
@@ -482,6 +482,9 @@
 TCL_BUILD_STUB_LIB_PATH="`pwd`/${TCL_STUB_LIB_FILE}"
 TCL_STUB_LIB_PATH="${exec_prefix}/lib/${TCL_STUB_LIB_FILE}"
 
+# Install time header dir can be set via --inlcudedir
+eval "TCL_INCLUDE_SPEC=\"-I${includedir}\""
+
 #------------------------------------------------------------------------
 # tclConfig.sh refers to this by a different name
 #------------------------------------------------------------------------
@@ -495,6 +498,7 @@
 AC_SUBST(TCL_BUILD_STUB_LIB_PATH)
 AC_SUBST(TCL_STUB_LIB_PATH)
 AC_SUBST(MAKE_STUB_LIB)
+AC_SUBST(TCL_INCLUDE_SPEC)
 
 AC_SUBST(BUILD_DLTEST)
 AC_SUBST(CFLAGS)
Index: unix/tclConfig.sh.in
===================================================================
RCS file: /cvsroot/tcl/tcl/unix/tclConfig.sh.in,v
retrieving revision 1.15
diff -u -r1.15 tclConfig.sh.in
--- unix/tclConfig.sh.in	2001/04/25 22:01:24	1.15
+++ unix/tclConfig.sh.in	2001/09/26 00:44:40
@@ -116,6 +116,10 @@
 # installed directory.
 TCL_LIB_SPEC='@TCL_LIB_SPEC@'
 
+# String to pass to the compiler so that an extension can
+# find installed Tcl headers.
+TCL_INCLUDE_SPEC='@TCL_INCLUDE_SPEC@'
+
 # Indicates whether a version numbers should be used in -l switches
 # ("ok" means it's safe to use switches like -ltcl7.5;  "nodots" means
 # use switches like -ltcl75).  SunOS and FreeBSD require "nodots", for
