From 2f286ce5ab5f9938e504549726bf25acc5bdfe4b Mon Sep 17 00:00:00 2001
From: Alexey Neyman <stilor@att.net>
Date: Sat, 22 Apr 2017 23:51:05 -0700
Subject: Retire BACKEND stuff

... it is possible to just not set it in the configuration, why force
it? It just increases the complexity in Kconfig.

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

diff --git a/config/backend.in b/config/backend.in
deleted file mode 100644
index 12d278b..0000000
--- a/config/backend.in
+++ /dev/null
@@ -1,26 +0,0 @@
-# Options specific to crosstool-NG acting as a backend
-
-config IS_A_BACKEND
-    string
-    option env="CT_IS_A_BACKEND"
-
-config BACKEND
-    bool
-    depends on OBSOLETE
-    default y if IS_A_BACKEND = "y" || IS_A_BACKEND = "Y"
-
-if BACKEND
-
-config BACKEND_ARCH
-    string
-    option env="CT_BACKEND_ARCH"
-
-config BACKEND_KERNEL
-    string
-    option env="CT_BACKEND_KERNEL"
-
-config BACKEND_LIBC
-    string
-    option env="CT_BACKEND_LIBC"
-
-endif #if BACKEND
diff --git a/config/binutils/binutils.in b/config/binutils/binutils.in
index 1bb674e..c83cbb1 100644
--- a/config/binutils/binutils.in
+++ b/config/binutils/binutils.in
@@ -314,7 +314,6 @@ config BINUTILS_FOR_TARGET
     bool
     prompt "binutils libraries for the target"
     depends on ! BARE_METAL
-    depends on ! BACKEND
     help
       Some utilities may need binutils libraries to be available on
       the target, eg. oprofile.
diff --git a/config/config.in b/config/config.in
index 885f722..21b0c7e 100644
--- a/config/config.in
+++ b/config/config.in
@@ -1,5 +1,4 @@
 source "config/configure.in"
-source "config/backend.in"
 source "config/global.in"
 source "config/target.in"
 source "config/toolchain.in"
diff --git a/config/debug/duma.in b/config/debug/duma.in
index 9947ca2..170a694 100644
--- a/config/debug/duma.in
+++ b/config/debug/duma.in
@@ -1,6 +1,5 @@
 # D.U.M.A. - Detect Unintended Memory Access - Memory checker
 
-## depends on ! BACKEND
 ## depends on ! BARE_METAL
 
 ## help D.U.M.A. - Detect Unintended Memory Access
diff --git a/config/debug/gdb.in.native b/config/debug/gdb.in.native
index 8684c05..e856b5d 100644
--- a/config/debug/gdb.in.native
+++ b/config/debug/gdb.in.native
@@ -4,7 +4,6 @@ config GDB_NATIVE
     bool
     prompt "Native gdb"
     depends on ! BARE_METAL
-    depends on ! BACKEND
     select EXPAT_TARGET
     select NCURSES_TARGET
     help
diff --git a/config/debug/ltrace.in b/config/debug/ltrace.in
index fc5822d..4c62676 100644
--- a/config/debug/ltrace.in
+++ b/config/debug/ltrace.in
@@ -1,7 +1,5 @@
 # ltrace
 
-## depends on ! BACKEND
-##
 ## select LIBELF_TARGET
 ##
 ## help ltrace is a program that simply runs the specified command until it exits.
diff --git a/config/debug/strace.in b/config/debug/strace.in
index 4cf6980..38dd96f 100644
--- a/config/debug/strace.in
+++ b/config/debug/strace.in
@@ -1,7 +1,5 @@
 # strace
 
-## depends on ! BACKEND
-
 choice
     bool
     prompt "strace version"
diff --git a/config/global/build-behave.in b/config/global/build-behave.in
index 9ad5438..d3298ea 100644
--- a/config/global/build-behave.in
+++ b/config/global/build-behave.in
@@ -2,12 +2,9 @@
 
 comment "Build behavior"
 
-comment "Build options hiden"
-    depends on BACKEND
-
 config PARALLEL_JOBS
     int
-    prompt "Number of parallel jobs" if ! BACKEND
+    prompt "Number of parallel jobs"
     default 0
     help
       Number of jobs make will be allowed to run concurently.
@@ -20,7 +17,7 @@ config PARALLEL_JOBS
 
 config LOAD
     string
-    prompt "Maximum allowed load" if ! BACKEND
+    prompt "Maximum allowed load"
     default ""
     help
       Specifies that no new jobs should be started if there are others jobs
@@ -33,7 +30,7 @@ config LOAD
 
 config USE_PIPES
     bool
-    prompt "Use -pipe" if ! BACKEND
+    prompt "Use -pipe"
     default y
     help
       Use gcc's option -pipe to use pipes rather than temp files when building
@@ -83,7 +80,6 @@ choice
     bool
     prompt "Shell to use as CONFIG_SHELL"
     default CONFIG_SHELL_BASH
-    depends on ! BACKEND
 
 config CONFIG_SHELL_SH
     bool
@@ -141,13 +137,10 @@ config CONFIG_SHELL_CUSTOM
 
 endchoice
 
-# Do not put this into the choice above, because the choice
-# is not available in BACKEND-mode, while we do want this to
-# be set even in BACKEND-mode.
 config CONFIG_SHELL_CUSTOM_PATH
     string
-    prompt "Path to custom shell" if ! BACKEND
-    depends on CONFIG_SHELL_CUSTOM || BACKEND
+    prompt "Path to custom shell"
+    depends on CONFIG_SHELL_CUSTOM
     default "/bin/sh"
 
 # Ditto.
@@ -157,4 +150,4 @@ config CONFIG_SHELL
     default "/bin/sh"                   if CONFIG_SHELL_SH
     default "/bin/ash"                  if CONFIG_SHELL_ASH
     default "${bash}"                   if CONFIG_SHELL_BASH
-    default CONFIG_SHELL_CUSTOM_PATH    if CONFIG_SHELL_CUSTOM || BACKEND
+    default CONFIG_SHELL_CUSTOM_PATH    if CONFIG_SHELL_CUSTOM
diff --git a/config/global/ct-behave.in b/config/global/ct-behave.in
index a57c798..42171e4 100644
--- a/config/global/ct-behave.in
+++ b/config/global/ct-behave.in
@@ -63,7 +63,6 @@ config ALLOW_BUILD_AS_ROOT_SURE
 config DEBUG_CT
     bool
     prompt "Debug crosstool-NG"
-    depends on ! BACKEND
     help
       Say 'y' here to get some options regarding debugging crosstool-NG.
 
diff --git a/config/global/paths.in b/config/global/paths.in
index 5313d0d..39e15f3 100644
--- a/config/global/paths.in
+++ b/config/global/paths.in
@@ -4,7 +4,7 @@ comment "Paths"
 
 config LOCAL_TARBALLS_DIR
     string
-    prompt "Local tarballs directory" if ! BACKEND
+    prompt "Local tarballs directory"
     default "${HOME}/src"
     help
       If you have previously downloaded the tarballs, enter the PATH where
@@ -12,8 +12,8 @@ config LOCAL_TARBALLS_DIR
 
 config SAVE_TARBALLS
     bool
-    prompt "Save new tarballs" if ! BACKEND
-    depends on LOCAL_TARBALLS_DIR != "" || BACKEND
+    prompt "Save new tarballs"
+    depends on LOCAL_TARBALLS_DIR != ""
     default y
     help
       If you say 'y' here, new downloaded tarballs will be saved in the
@@ -21,7 +21,7 @@ config SAVE_TARBALLS
 
 config WORK_DIR
     string
-    prompt "Working directory" if ! BACKEND
+    prompt "Working directory"
     default "${CT_TOP_DIR}/.build"
     help
       Set this to the directory where all build actions will be done.
@@ -46,7 +46,7 @@ config BUILD_TOP_DIR
 
 config PREFIX_DIR
     string
-    prompt "Prefix directory" if ! BACKEND
+    prompt "Prefix directory"
     default "${CT_PREFIX:-${HOME}/x-tools}/${CT_HOST:+HOST-${CT_HOST}/}${CT_TARGET}"
     help
       This is the path the toolchain will run from.
@@ -55,7 +55,6 @@ config RM_RF_PREFIX_DIR
     bool
     prompt "|  Remove the prefix dir prior to building"
     default y
-    depends on !BACKEND
     help
       If you say 'y' here, then PREFIX_DIR (above) will be eradicated
       prior to the toolchain is built.
@@ -69,9 +68,6 @@ config RM_RF_PREFIX_DIR
       it into a directory with pre-install, unrelated programs, it would be
       damageable to remove that directory. In this case, you may want to
       say 'n' here.
-      
-      Note that when acting as a backend, this option is not available, and
-      is forced to 'n'.
 
 config REMOVE_DOCS
     bool
diff --git a/config/toolchain.in b/config/toolchain.in
index c712f39..1b2a289 100644
--- a/config/toolchain.in
+++ b/config/toolchain.in
@@ -20,7 +20,7 @@ config USE_SYSROOT
 
 config SYSROOT_NAME
     string
-    prompt "sysroot directory name" if ! BACKEND
+    prompt "sysroot directory name"
     depends on USE_SYSROOT
     default "sysroot"
     help
@@ -33,7 +33,7 @@ config SYSROOT_NAME
 
 config SYSROOT_DIR_PREFIX
     string
-    prompt "sysroot prefix dir (READ HELP)" if ! BACKEND
+    prompt "sysroot prefix dir (READ HELP)"
     depends on USE_SYSROOT
     default ""
     help
diff --git a/kconfig/kconfig.mk b/kconfig/kconfig.mk
index 955ae0b..c82e502 100644
--- a/kconfig/kconfig.mk
+++ b/kconfig/kconfig.mk
@@ -8,11 +8,6 @@
 # Top file of crosstool-NG configuration
 export KCONFIG_TOP = $(CT_LIB_DIR)/config/config.in
 
-export CT_IS_A_BACKEND:=$(CT_IS_A_BACKEND)
-export CT_BACKEND_ARCH:=$(CT_BACKEND_ARCH)
-export CT_BACKEND_KERNEL:=$(CT_BACKEND_KERNEL)
-export CT_BACKEND_LIBC:=$(CT_BACKEND_LIBC)
-
 # We need CONF for savedefconfig in scripts/saveSample.sh
 export CONF  := $(CT_LIB_DIR)/kconfig/conf
 MCONF := $(CT_LIB_DIR)/kconfig/mconf
diff --git a/maintainer/gen-kconfig.sh b/maintainer/gen-kconfig.sh
index 4cb6567..364844d 100755
--- a/maintainer/gen-kconfig.sh
+++ b/maintainer/gen-kconfig.sh
@@ -10,12 +10,10 @@ grep=${GREP:-grep}
 #
 # Usage:
 #   generate a choice:
-#       gen_choice <out-file> <label> <config-prefix> <base-dir> \
-#                  <conditionals> entry [entry...]
+#       gen_choice <out-file> <label> <config-prefix> <base-dir>
 #
 #   generate a menuconfig:
-#       gen_menu <out-file> <label> <config-prefix> <base-dir> \
-#                entry [entry...]
+#       gen_menu <out-file> <label> <config-prefix> <base-dir>
 #
 # where:
 #   out-file
@@ -35,18 +33,6 @@ grep=${GREP:-grep}
 #       base directory containing config files
 #       eg. config/arch, config/kernel...
 #
-#   conditionals (valid only for choice)
-#       generate backend conditionals if Y/y, don't if anything else
-#       if 'Y' (or 'y'), a dependency on the backen mode will be added
-#       to each entry
-#
-#   entry [entry...]
-#       a list of entry/ies toadd to the choice/menuconfig
-#       eg.:
-#           arm mips sh x86...
-#           linux cygwin mingw32 solaris...
-#           ...
-#
 
 # Helper: find the base names of all *.in files in a given directory
 get_components() {
@@ -66,7 +52,6 @@ gen_choice() {
     local label="${2}"
     local cfg_prefix="${3}"
     local base_dir="${4}"
-    local cond="${5}"
     local file entry _entry
 
     # Generate the part-1
@@ -84,9 +69,6 @@ gen_choice() {
         printf 'config %s_%s\n' "${cfg_prefix}" "${_entry}"
         printf '    bool\n'
         printf '    prompt "%s"\n' "${entry}"
-        if [ "${cond}" = "Y" -o "${cond}" = "y" ]; then
-            printf '    depends on %s_%s_AVAILABLE\n' "${cfg_prefix}" "${_entry}"
-        fi
         "${sed}" -r -e '/^## depends on /!d; s/^## /    /;' ${file} 2>/dev/null
         "${sed}" -r -e '/^## select /!d; s/^## /    /;' ${file} 2>/dev/null
         if "${grep}" -E '^## help' ${file} >/dev/null 2>&1; then
@@ -97,21 +79,19 @@ gen_choice() {
     done
     printf 'endchoice\n'
 
+    printf '\n'
+    printf 'config %s\n' "${cfg_prefix}"
     for entry in `get_components ${base_dir}`; do
         file="${base_dir}/${entry}.in"
         _entry=$(printf '%s\n' "${entry}" |"${sed}" -r -s -e 's/[-.+]/_/g;')
-        printf '\n'
-        if [ "${cond}" = "Y" -o "${cond}" = "y" ]; then
-            printf 'config %s_%s_AVAILABLE\n' "${cfg_prefix}" "${_entry}"
-            printf '    bool\n'
-            printf '    default y if'
-            printf ' BACKEND_%s = "%s"' "${cfg_prefix}" "${entry}"
-            printf ' || BACKEND_%s = ""' "${cfg_prefix}"
-            printf ' || ! BACKEND\n'
-        fi
-        printf 'if %s_%s\n' "${cfg_prefix}" "${_entry}"
-        printf 'config %s\n' "${cfg_prefix}"
         printf '    default "%s" if %s_%s\n' "${entry}" "${cfg_prefix}" "${_entry}"
+    done
+
+    printf '\n'
+    for entry in `get_components ${base_dir}`; do
+        file="${base_dir}/${entry}.in"
+        _entry=$(printf '%s\n' "${entry}" |"${sed}" -r -s -e 's/[-.+]/_/g;')
+        printf 'if %s_%s\n' "${cfg_prefix}" "${_entry}"
         printf 'source "%s"\n' "${file}"
         printf 'endif\n'
     done
@@ -171,10 +151,10 @@ gen_menu() {
 }
 
 mkdir -p config/gen
-gen_choice config/gen/arch.in "Target Architecture" "ARCH" "config/arch" "Y"
-gen_choice config/gen/kernel.in "Target OS" "KERNEL" "config/kernel" "Y"
-gen_choice config/gen/cc.in "Compiler" "CC" "config/cc" "N"
-gen_choice config/gen/binutils.in "Binutils" "BINUTILS" "config/binutils" "N"
-gen_choice config/gen/libc.in "C library" "LIBC" "config/libc" "Y"
+gen_choice config/gen/arch.in "Target Architecture" "ARCH" "config/arch"
+gen_choice config/gen/kernel.in "Target OS" "KERNEL" "config/kernel"
+gen_choice config/gen/cc.in "Compiler" "CC" "config/cc"
+gen_choice config/gen/binutils.in "Binutils" "BINUTILS" "config/binutils"
+gen_choice config/gen/libc.in "C library" "LIBC" "config/libc"
 gen_menu config/gen/debug.in "Debug facilities" "DEBUG" "config/debug"
 gen_menu config/gen/companion_tools.in "Companion tools" "COMP_TOOLS" "config/companion_tools"
-- 
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