tcl: remove host path from tclConfig.sh

The tclConfig.sh is also used by other packages (such as expect) for
cross-compiling, the host path from it can't be removed directly in
the do_install step.

With PACKAGE_PREPROCESS_FUNCS to remove host path and avoid the
crossscripts installed to target.

(From OE-Core rev: 54841b0a12f3d7ac9c36df110821fa39d60d456f)

Signed-off-by: Wenzong Fan <wenzong.fan@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
(cherry picked from commit ced5618e7b3459fdd96f448ccdb55b5ced6d8214)
Signed-off-by: Armin Kuster <akuster808@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/tcltk/tcl_8.6.7.bb

@@ -86,3 +86,16 @@ BINCONFIG_GLOB = "*Config.sh"
 
 # Fix the path in sstate
 SSTATE_SCAN_FILES += "*Config.sh"
+
+# Cleanup host path from ${libdir}/tclConfig.sh and remove the
+# ${bindir_crossscripts}/tclConfig.sh from target
+PACKAGE_PREPROCESS_FUNCS += "tcl_package_preprocess"
+tcl_package_preprocess() {
+	sed -i -e "s;${DEBUG_PREFIX_MAP};;g" \
+	       -e "s;-L${STAGING_LIBDIR};-L${libdir};g" \
+	       -e "s;${STAGING_INCDIR};${includedir};g" \
+	       -e "s;--sysroot=${RECIPE_SYSROOT};;g" \
+	       ${PKGD}${libdir}/tclConfig.sh
+
+	rm -f ${PKGD}${bindir_crossscripts}/tclConfig.sh
+}