libc: get rid of libc_finish

At long last, we no longer have any libc that requries a libc_finish.
Yeah!

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

docs/9 - How is a toolchain constructed.txt

@@ -243,11 +243,7 @@ that adds this support: elf2flt. Another binary utility called sstrip has been
 added. It allows for super-stripping the target binaries, although it is not
 strictly required.
 
-Second, some C libraries require another step after the compiler is built, to
-install additional stuff. This is the case for mingw and newlib. Hence the
-libc_finish step.
-
-Third, crosstool-NG can also build some additional debug utilities to run on
+Second, crosstool-NG can also build some additional debug utilities to run on
 the target. This is where we build, for example, the cross-gdb, the gdbserver
 and the native gdb (the last two run on the target, the first runs on the
 same machine as the toolchain). The others (strace, ltrace, DUMA and dmalloc)

scripts/build/libc/eglibc.sh

@@ -4,7 +4,6 @@
 #   do_libc_extract
 #   do_libc_start_files
 #   do_libc
-#   do_libc_finish
 #   do_libc_add_ons_list
 #   do_libc_min_kernel_config
 . "${CT_LIB_DIR}/scripts/build/libc/glibc-eglibc.sh-common"

scripts/build/libc/glibc-eglibc.sh-common

@@ -471,12 +471,6 @@ do_libc_backend_once() {
     fi # libc_full == y
 }
 
-# This function finishes the C library install
-# This is a no-op
-do_libc_finish() {
-    :
-}
-
 # Build up the addons list, separated with $1
 do_libc_add_ons_list() {
     local sep="$1"

scripts/build/libc/glibc.sh

@@ -6,7 +6,6 @@
 #   do_libc_extract
 #   do_libc_start_files
 #   do_libc
-#   do_libc_finish
 #   do_libc_add_ons_list
 #   do_libc_min_kernel_config
 . "${CT_LIB_DIR}/scripts/build/libc/glibc-eglibc.sh-common"

scripts/build/libc/mingw.sh

@@ -77,7 +77,3 @@ do_libc() {
 
     CT_EndStep
 }
-
-do_libc_finish() {
-    :
-}

scripts/build/libc/newlib.sh

@@ -135,7 +135,3 @@ do_libc() {
 
     CT_EndStep
 }
-
-do_libc_finish() {
-    :
-}

scripts/build/libc/none.sh

@@ -21,7 +21,3 @@ do_libc_start_files() {
 do_libc() {
     :
 }
-
-do_libc_finish() {
-    :
-}

scripts/build/libc/uClibc.sh

@@ -232,11 +232,6 @@ do_libc() {
     CT_EndStep
 }
 
-# This function is used to install those components needing the final C compiler
-do_libc_finish() {
-    :
-}
-
 # Initialises the .config file to sensible values
 # $1: original file
 # $2: munged file

steps.mk

@@ -30,7 +30,6 @@ CT_STEPS := libc_check_config        \
             libc                     \
             cc_for_build             \
             cc_for_host              \
-            libc_finish              \
             libelf_for_target        \
             binutils_for_target      \
             debug                    \