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--- docs:guide-developer:external_toolchain [2022/09/10 12:45] – [Step 1: Build Toolchain] ansuel
+++ docs:guide-developer:external_toolchain [2022/09/10 12:53] (current) – [Step 2: Build Firmware] ansuel
@@ Line 15: / Line 15: @@
 ==== Step 2: Build Firmware ====
-We start at the same point as the toolchain. Checkout OpenWrt into directory **openwrt** (or anything else than **toolchain**). Now we need some patching, because at the moment (rev 27109) it is not possible to use OpenWrt for both.
+  - Checkout OpenWrt into directory **openwrt**
+  - Follow normal instruction for openwrt prereq
+  - Use the utility script to setup your buildroot <code>
+   ./scripts/ext-toolchain.sh \
+            --toolchain TOOLCHAIN_FILE_LOCATION \
+            --config TARGET_NAME (example ipq806x/generic)
+  </code>
+  - Use your buildroot like a normal one. Edit your config with ''make menuconfig'' and run ''make'' to compile your image
-Apply these patches in the order listet here:
-  * 1. [[https://lists.openwrt.org/pipermail/openwrt-devel/2011-June/011142.html|[PATCH] Resend: base-files: copy uClibc files from ext. toolchain]] ([[http://mcbachmann.de/openwrt/0001-base-files-copy-uClibc-files-from-ext.-toolchain.patch|Direct-Download from mcbachmann.de]], [[https://dev.openwrt.org/ticket/9157|Ticket #9157]])
-  * 2. [[https://dev.openwrt.org/ticket/8786|Ticket #8786 - Zlib 1.2.5 compilation is failing]] ([[http://mcbachmann.de/openwrt/0001-rules.mk-always-enable-fhonour-copts.patch|Direct-Download from mcbachmann.de]]) (Patch maybe not compatible with non-OpenWrt-Toolchains as **xMff** pointed out in IRC)
-After this, copy the .config-file from the toolchain directory into this build directory and do a **make menuconfig**.
-  * [*] **Advanced configuration options (for developers)**
-    * [*] **Use external toolchain**
-      * Target name: arm-openwrt-linux-uclibcgnueabi (in my case, yours may vary)
-      * Toolchain prefix: arm-openwrt-linux-uclibcgnueabi- (mind the dash at the end)
-      * Toolchain root: /path/to/toolchain/staging_dir/toolchain-arm_v5te_gcc-linaro_uClibc-0.9.32_eabi
-Save and compile. For my case, the full toolchain build now needs about 1 1/2 hour and the normal firmware takes only 1 hour.
+If you want to update a .config to use an external toolchain you can use the ''--overwrite-config''. For example:
+<code>
+   ./scripts/ext-toolchain.sh \
+            --toolchain TOOLCHAIN_FILE_LOCATION \
+            --overwrite-config
+            --config TARGET_NAME (example ipq806x/generic)
+</code>