Make license collection optional, on by default

Signed-off-by: Alexey Neyman <stilor@att.net>

config/global/paths.in

@@ -85,6 +85,15 @@ config BUILD_MANUALS
       Build the PDF and HTML manuals for the main components such as
       binutils, GCC, GDB, and the C library.
 
+config INSTALL_LICENSES
+    bool "Install licenses"
+    default y
+    help
+      Collect the license files for all the components that went into
+      producing this toolchain (including the crosstool-NG itself)
+      and place them in /share/licenses directory within the prefix
+      directory.
+
 config PREFIX_DIR_RO
     bool
     prompt "Render the toolchain read-only"

scripts/build/internals.sh

@@ -144,7 +144,9 @@ do_finish() {
         CT_DoForceRmdir "${CT_DEBUGROOT_DIR}/"{,usr/}{,share/}{man,info}
     fi
 
-    CT_InstallCopyingInformation
+    if [ "${CT_INSTALL_LICENSES}" = y ]; then
+        CT_InstallCopyingInformation
+    fi
 
     CT_EndStep
 }