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The Go compiler needs to know the "import path" to the root of package source repositories. Previously, this was done by creating a fake _gopath in the build directory and symlinking the package source into that path. Go has deprecated the GOPATH mechanism in favor of a new approach - Modules - which specifies the root import path (and dependencies) in a "go.mod" file. This commit moves Buildroot to use the new go.mod approach, which requires: - Passing GO111MODULE=on when building host or target Go packages. - Passing GOPROXY=off and -mod=vendor to prevent the Go module system from downloading by itself sources from the Internet. We currently only support Go packages that have all their dependencies in their source tree in "vendor" directories. - Specifying a <pkg>_GOMOD variable, which is used both to create a minimal go.mod file in the package source tree if it exists, and to invoke the right build targets. Indeed, all elements in <pkg>_BUILD_TARGETS are now relative to <pkg>_GOMOD. Reference: https://github.com/golang/go/wiki/Modules Signed-off-by: Christian Stewart <christian@paral.in> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.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 Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches