Add Toolchain gen script (#353)

* Set internal release versions more flexible

* Add show_toolchains.sh script

scripts/show_toolchains.sh

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+
+shopt -s nullglob
+
+if [ $# -eq 0 ]; then
+  $0 1 | sort
+  #$0 1 | sort | uniq
+else
+  for D in br-ext-chip-*; do
+    for CF in $D/configs/*; do
+      BR2_VER=$(grep BR2_DEFAULT_KERNEL_VERSION $CF)
+      if [ ! -z $BR2_VER ]; then
+        VENDOR=$(echo $CF | cut -d - -f 4 | cut -d / -f 1 | sed -r 's/\<./\U&/g')
+        VER=$(echo $BR2_VER | cut -d \" -f 2 | awk -F . '{printf "%s_%s", $1, $2}')
+        GCC_VER=$(sed -rn "s/^BR2_GCC_VERSION_([0-9]*)_X=y/\1/p" $CF)
+        ARCH=$(sed -rn "s/^BR2_(arm[a-z0-9_]+)=y/\1/p" $CF)
+        if [ -z "$ARCH" ]; then
+          ARCH=$(sed -rn "s/^BR2_(cortex_[a-z0-9_]+)=y/\1/p" $CF)
+        fi
+        if [ -z "$ARCH" ]; then
+          ARCH=$(sed -rn "s/^BR2_(arm)=y/\1/p" $CF)
+        else
+          # Here we have something from ARM modern family
+          HF=$(sed -rn "s/^BR2_ARM_EABI(HF)=y/\1/p" $CF | tr '[:upper:]' '[:lower:]')
+          if [ ! -z "$HF" ]; then
+            ARCH="${ARCH}_${HF}"
+          fi
+        fi
+
+        if [ -z "$ARCH" ]; then
+          ARCH=$(sed -rn "s/^BR2_(mips_[a-z]*)=y/\1/p" $CF)
+        fi
+
+        LIBC=$(sed -rn "s/^BR2_TOOLCHAIN_BUILDROOT_LIBC=\"(.*)\"/\1/p" $CF)
+
+        SOC=$(echo $CF | cut -d _ -f 3)
+        # $GCC_VER
+        echo $ARCH $LIBC $VER $VENDOR $CF
+      fi
+    done
+  done
+fi