Local build failed: "go-bootstrap cannot be installed on linux/arm64"

dsouza · October 21, 2024, 1:40pm

I use to do my own OpenWrt builds. I can build just fine in Ubuntu on WSL2.

However I am trying to build on Armbian/Orange Pi5 as an experiment (targeting ARM64, so no cross-compilation is needed) and I am getting the following error during GoLang build:

make[3]: Entering directory '/home/dsouza/openwrt/r4s-router-23.05.5/feeds/packages/lang/golang/golang'
Makefile:402: *** go-bootstrap cannot be installed on linux/arm64.  Stop.

I know that building on ARM64 platform is not officially supported, but just asking here if by chance anyone has successfully built OpenWrt in a ARM64 build environment and if there is any workaround for this issue.

brada4 · October 21, 2024, 1:44pm

You can install armbian provided go compiler to serve as bootstrap.

dsouza · October 21, 2024, 2:40pm

That's what I did, but it is not working.

I've found the issue below, reading now (I believe I need to point the make file manually to the external golang compiler):

github.com/openwrt/packages

golang: Enable build on aarch64(arm64) host

opened 04:30AM - 01 Apr 20 UTC

closed 07:57PM - 28 May 20 UTC

cmheia

Maintainer: @jefferyto Environment: Host is RK3328(aarch64) box, SDK is self bu…ild from OpenWrt v19.07.2 source Description: Before building any app written in go, a bootstrap blob is need to generate a host go compiler. Currently this is `go1.4-bootstrap-20171003.tar.gz`. As we all known, arm64 is not support in go 1.4. But I'm perfer to build ipks in my small arm box, and I managed to work it out with a few problem to resolve. Here is what I do: 1. Build `go-linux-arm64-bootstrap-1.14.1.tbz` in an amd64 PC 2. Extract `go-linux-arm64-bootstrap-1.14.1.tbz` as `/data/go-linux-arm64-bootstrap-1.14.1/` in arm box 3. Add an option `GOLANG_BOOTSTRAP_BASE_DIR` to `lang/golang/golang/Makefile` 4. Add `CONFIG_GOLANG_BOOTSTRAP_BASE_DIR="/data/go-linux-arm64-bootstrap-1.14.1"` to `.config` in SDK in arm box After doing that, building golang app no longer failed with `go-bootstrap cannot be installed on linux/arm64. Stop.`. **BUT** there are two problem not resolved: - If remove the line after `define Host/Compile` ie **`# Build GO`**, build will stop with `extraneous 'endif'. Stop.` - If `CONFIG_GOLANG_BOOTSTRAP_BASE_DIR` is set to empty, building golang app not stop at `go-bootstrap cannot be installed on linux/arm64`. Any help @jefferyto ? --- Here is what I do to `lang/golang/golang/Makefile`: ``` diff --git a/lang/golang/golang/Makefile b/lang/golang/golang/Makefile index dd50c2d32..b5d06b3ea 100644 --- a/lang/golang/golang/Makefile +++ b/lang/golang/golang/Makefile @@ -30,6 +30,17 @@ PKG_BUILD_DIR:=$(BUILD_DIR)/go-$(PKG_VERSION) PKG_BUILD_PARALLEL:=1 PKG_USE_MIPS16:=0 +define Package/golang/config + menu "Configuration" + + config GOLANG_BOOTSTRAP_BASE_DIR + string + prompt "golng bootstrap base directory" + default "" + + endmenu +endef + PKG_GO_WORK_DIR:=$(PKG_BUILD_DIR)/.go_work PKG_GO_HOST_CACHE_DIR:=$(PKG_GO_WORK_DIR)/host_cache PKG_GO_TARGET_CACHE_DIR:=$(PKG_GO_WORK_DIR)/target_cache @@ -62,9 +73,13 @@ BOOTSTRAP_SOURCE:=go1.4-bootstrap-20171003.tar.gz BOOTSTRAP_SOURCE_URL:=$(GO_SOURCE_URLS) BOOTSTRAP_HASH:=f4ff5b5eb3a3cae1c993723f3eab519c5bae18866b5e5f96fe1102f0cb5c3e52 +ifeq ($(CONFIG_GOLANG_BOOTSTRAP_BASE_DIR),) BOOTSTRAP_BUILD_DIR:=$(HOST_BUILD_DIR)/.go_bootstrap BOOTSTRAP_WORK_DIR:=$(BOOTSTRAP_BUILD_DIR)/.go_work BOOTSTRAP_CACHE_DIR:=$(BOOTSTRAP_WORK_DIR)/cache +else +BOOTSTRAP_BUILD_DIR:=$(CONFIG_GOLANG_BOOTSTRAP_BASE_DIR) +endif BOOTSTRAP_GO_VALID_OS_ARCH:= \ darwin_386 darwin_amd64 \ @@ -153,31 +168,41 @@ define Download/golang-bootstrap URL:=$(BOOTSTRAP_SOURCE_URL) HASH:=$(BOOTSTRAP_HASH) endef -$(eval $(call Download,golang-bootstrap)) +ifeq ($(CONFIG_GOLANG_BOOTSTRAP_BASE_DIR),) +$(eval $(call Download,golang-bootstrap)) $(eval $(call GoCompiler/AddProfile,Bootstrap,$(BOOTSTRAP_BUILD_DIR),,bootstrap,$(GO_HOST_OS_ARCH))) +endif + $(eval $(call GoCompiler/AddProfile,Host,$(HOST_BUILD_DIR),$(HOST_GO_PREFIX),$(HOST_GO_VERSION_ID),$(GO_HOST_OS_ARCH))) $(eval $(call GoCompiler/AddProfile,Package,$(PKG_BUILD_DIR),$(GO_TARGET_PREFIX),$(GO_TARGET_VERSION_ID),$(GO_OS_ARCH))) define Host/Prepare $(call Host/Prepare/Default) + ifeq ($(CONFIG_GOLANG_BOOTSTRAP_BASE_DIR),) mkdir -p $(BOOTSTRAP_BUILD_DIR) $(BOOTSTRAP_UNPACK) + endif endef define Host/Compile + # Build GO + ifeq ($(CONFIG_GOLANG_BOOTSTRAP_BASE_DIR),) $(call GoCompiler/Bootstrap/CheckHost,$(BOOTSTRAP_GO_VALID_OS_ARCH)) + endif $(call GoCompiler/Host/CheckHost,$(HOST_GO_VALID_OS_ARCH)) mkdir -p \ $(BOOTSTRAP_CACHE_DIR) \ $(HOST_GO_CACHE_DIR) + ifeq ($(CONFIG_GOLANG_BOOTSTRAP_BASE_DIR),) $(call GoCompiler/Bootstrap/Make, \ GOCACHE=$(BOOTSTRAP_CACHE_DIR) \ CC=$(HOSTCC_NOCACHE) \ CXX=$(HOSTCXX_NOCACHE) \ ) + endif $(call GoCompiler/Host/Make, \ GOROOT_BOOTSTRAP=$(BOOTSTRAP_BUILD_DIR) \ ```

dsouza · October 21, 2024, 5:16pm

I believe I need to set GOLANG_EXTERNAL_BOOTSTRAP_ROOT to the directory where go is in my system (/usr/lib/go).

However I am not able to find where I should set GOLANG_EXTERNAL_BOOTSTRAP_ROOT=/usr/lib/go

Any hint would be appreciated.

dsouza · October 25, 2024, 6:52pm

OK, found it. How to solve - after setting up the build environment, doing all the pre-build steps, right after running make menuconfig and before starting the build do this:

Install go in your build environment:
sudo apt install golang
Find where it is installed:
whereis go. In my case it was installed in /usr/bin/go
Edit your OpenWrt build .config:
nano .config
Find and change the following configuration:
CONFIG_GOLANG_EXTERNAL_BOOTSTRAP_ROOT="/usr/lib/go"
Done! Now the build can be started (make -j9 in OrangePi) and it will not fail in the GoLang phase.

system · November 4, 2024, 6:53pm

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