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1a44f9242c
Building go with cgo support needs to build some .c files to generate target
support code, and thus calls the cross C compiler, which is failing when the
toolchain is not built before host-go:
>>> host-go 1.21.1 Building
cd .../build/host-go-1.21.1/src && GO111MODULE=off GOCACHE=.../per-package/host-go/host/share/host-go-cache GOROOT_BOOTSTRAP=.../per-package/host-go/host/lib/go-1.19.11 GOROOT_FINAL=.../per-package/host-go/host/lib/go GOROOT=".../build/host-go-1.21.1" GOBIN=".../build/host-go-1.21.1/bin" GOOS=linux CC=/usr/bin/gcc CXX=/usr/bin/g++ CGO_ENABLED=1 CC_FOR_TARGET=".../per-package/host-go/host/bin/arm-linux-gcc" CXX_FOR_TARGET=".../per-package/host-go/host/bin/arm-linux-g++" GOOS="linux" GOARCH=arm GOARM=6 GO_ASSUME_CROSSCOMPILING=1 ./make.bash
Building Go cmd/dist using .../per-package/host-go/host/lib/go-1.19.11. (go1.19.11 linux/amd64)
go tool dist: cannot invoke C compiler [".../per-package/host-go/host/bin/arm-linux-gcc"]: fork/exec .../per-package/host-go/host/bin/arm-linux-gcc: no such file or directory
Go needs a system C compiler for use with cgo.
To set a C compiler, set CC=the-compiler.
To disable cgo, set CGO_ENABLED=0.
This happens systematically with PPD, and happens without PPD when
host-go is explicitly built (by running: "make host-go").
Since only CGO support needs to compile C files, only add the toolchain
dependency in that case.
When the target is not supported by go, then there is obviously no need
to depend on the toolchain (even if we unconditionally enable cgo
support in only-for-the-host host-go).
Signed-off-by: Christian Stewart <christian@aperture.us>
[yann.morin@orange.com:
- only add the toolchain dependency for target cgo
- reword commit log
]
Signed-off-by: Yann E. MORIN <yann.morin@orange.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Anisse Astier <anisse@astier.eu>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches