Hello Ian,Thanks for the quick reaction. It seems my request was not clear.What I am doing is the other way around: using gccgo to build the "go" cmd.So clone the "go" source from github and then go build -compiler gccgo ./cmd/goGerrit -------- Oorspronkelijk bericht --------Van: Ian Lance Taylor <i...@golang.org> Datum: 20-10-20 04:25 (GMT+01:00) Aan: Gerrit Binnenmars <gerritbinnenm...@gmail.com> Cc: golang-nuts <golang-nuts@googlegroups.com> Onderwerp: Re: [go-nuts] gccgo problem compiling go from source On Mon, Oct 19, 2020 at 2:06 PM Gerrit Binnenmars<gerritbinnenm...@gmail.com> wrote:>> I used crosstool-ng successfully to build a go compiler for ppc e500.> Unfortunately go build does not support ppc therefore go needs to be> build from source using the amd64 gccgo compiler that I also build> with crosstool-ng.>> Compiling go from source fails:> Problem: undefined name stdpkg in internal/goroot/gccgo.go>> I included the output of my build script below. Any help or tips are welcome.>> With kind regards,>> Gerrit Binnenmars>> Info:> This is crosstool-NG version 1.24.0.191_364ed7a> GO111MODULE=""> GOARCH="amd64"> GOBIN=""> GOCACHE="/home/maintain/.cache/go-build"> GOENV="/home/maintain/.config/go/env"> GOEXE=""> GOFLAGS=""> GOHOSTARCH="amd64"> GOHOSTOS="linux"> GOINSECURE=""> GOMODCACHE="/home/maintain/gonew/pkg/mod"> GONOPROXY=""> GONOSUMDB=""> GOOS="linux"> GOPATH="/home/maintain/gonew"> GOPRIVATE=""> GOPROXY="https://proxy.golang.org,direct";> GOROOT="/home/maintain/x-tools/x86_64-e500-linux-gnu/x86_64-e500-linux-gnu/sysroot/lib"> GOSUMDB="sum.golang.org"> GOTMPDIR=""> GOTOOLDIR="/home/maintain/x-tools/x86_64-e500-linux-gnu/x86_64-e500-linux-gnu/sysroot/lib/pkg/tool/linux_amd64"> GCCGO="/home/maintain/x-tools/x86_64-e500-linux-gnu/bin/gccgo"> AR="ar"> CC="/home/maintain/x-tools/x86_64-e500-linux-gnu/bin/gcc"> CXX="/home/maintain/x-tools/x86_64-e500-linux-gnu/bin/g++"> CGO_ENABLED="1"> GOMOD=""> CGO_CFLAGS="--with-sysroot=/home/maintain/x-tools/x86_64-e500-linux-gnu/x86_64-e500-linux-gnu/sysroot"> CGO_CPPFLAGS=""> CGO_CXXFLAGS="-g -O2"> CGO_FFLAGS="-g -O2"> CGO_LDFLAGS="-g -O2"> PKG_CONFIG="pkg-config"> GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0> -fdebug-prefix-map=/tmp/go-build355977706=/tmp/go-build> -gno-record-gcc-switches"> go version go1.15.2 linux/amd64> gccgo (GCC) 10.2.0> Copyright (C) 2020 Free Software Foundation, Inc.> This is free software; see the source for copying conditions. There is NO> warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.>> WORK=/tmp/go-build273889551> mkdir -p $WORK/b100/> cd $WORK> /home/maintain/x-tools/x86_64-e500-linux-gnu/bin/gccgo> -fgo-importcfg=/dev/null -c -x c - -o /dev/null || true> cd /home/maintain/gonew/src/internal/goroot> /home/maintain/x-tools/x86_64-e500-linux-gnu/bin/gccgo -c -g -m64> -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches> -fgo-pkgpath=internal/goroot -o $WORK/b100/_go_.o -I> $WORK/b100/_importcfgroot_ ./gccgo.go> mkdir -p $WORK/b027/> mkdir -p $WORK/b027/_importcfgroot_/cmd/go/internal> ln -s /home/maintain/.cache/go-build/ad/ade44815e7af8b7305b2db4099ec5b08aafcbd6e374a2c13d8e99c2986ca93c6-d> $WORK/b027/_importcfgroot_/cmd/go/internal/libauth.a> ln -s /home/maintain/.cache/go-build/d2/d26f05f163d86aecfadfbb952dfef9a314aa1c84c23fddd39bce127ccc85d101-d> $WORK/b027/_importcfgroot_/cmd/go/internal/libcfg.a> mkdir -p $WORK/b027/_importcfgroot_/cmd/internal> ln -s /home/maintain/.cache/go-build/2f/2f6811b0804c481edbfd9952d1aac22414f84ee1aec229218b03956bf3f9aa7a-d> $WORK/b027/_importcfgroot_/cmd/internal/libbrowser.a> cd /home/maintain/gonew/src/cmd/go/internal/web> /home/maintain/x-tools/x86_64-e500-linux-gnu/bin/gccgo -c -g -m64> -fdebug-prefix-map=$WORK=/tmp/go-build -gno-record-gcc-switches> -fgo-pkgpath=cmd/go/internal/web -o $WORK/b027/_go_.o -I> $WORK/b027/_importcfgroot_ ./api.go ./http.go ./url.go ./url_other.go> # internal/goroot> src/internal/goroot/gccgo.go:24:10: error: reference to undefined name 'stdpkg'> 24 | return stdpkg[path]> | ^> # cmd/go/internal/web> src/cmd/go/internal/web/api.go:92:45: error: reference to undefined> field or method 'Redacted'> 92 | return nil, fmt.Errorf("reading %s: %v", u.Redacted(), err)It looks like you are using the "go" program to build the gccgostandard library. That doesn't work. The gccgo standard library mustbe built as part of GCC, using the usual configure/make commands usedto build GCC itself. When configuring GCC, use --enable-languages=go.Ian
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