3.19 Golang 交叉编译#

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$ go env
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GOARCH="amd64"
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GOBIN=""
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GOCACHE="/root/.cache/go-build"
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GOEXE=""
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GOHOSTARCH="amd64"
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GOHOSTOS="linux"
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GOOS="linux"
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...
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GCCGO="gccgo"
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CC="gcc"
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CXX="g++"
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CGO_ENABLED="1"
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...

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$ go help build
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usage: go build [-o output] [-i] [build flags] [packages]
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...
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  -a
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    force rebuilding of packages that are already up-to-date.
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  -n
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    print the commands but do not run them.
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  -p n
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    the number of programs, such as build commands or
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    test binaries, that can be run in parallel.
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    The default is the number of CPUs available.
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  -race
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    enable data race detection.
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    Supported only on linux/amd64, freebsd/amd64, darwin/amd64 and windows/amd64.
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  -msan
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    enable interoperation with memory sanitizer.
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    Supported only on linux/amd64,
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    and only with Clang/LLVM as the host C compiler.
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  -v
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    print the names of packages as they are compiled.
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  -work
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    print the name of the temporary work directory and
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    do not delete it when exiting.
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  -x
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    print the commands.
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  -asmflags '[pattern=]arg list'
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    arguments to pass on each go tool asm invocation.
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  -buildmode mode
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    build mode to use. See 'go help buildmode' for more.
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  -compiler name
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    name of compiler to use, as in runtime.Compiler (gccgo or gc).
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  -gccgoflags '[pattern=]arg list'
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    arguments to pass on each gccgo compiler/linker invocation.
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  -gcflags '[pattern=]arg list'
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    arguments to pass on each go tool compile invocation.
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  -installsuffix suffix
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    a suffix to use in the name of the package installation directory,
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    in order to keep output separate from default builds.
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    If using the -race flag, the install suffix is automatically set to race
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    or, if set explicitly, has _race appended to it. Likewise for the -msan
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    flag. Using a -buildmode option that requires non-default compile flags
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    has a similar effect.
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  -ldflags '[pattern=]arg list'
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    arguments to pass on each go tool link invocation.
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  -linkshared
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    link against shared libraries previously created with
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    -buildmode=shared.
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  -pkgdir dir
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    install and load all packages from dir instead of the usual locations.
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    For example, when building with a non-standard configuration,
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    use -pkgdir to keep generated packages in a separate location.
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  -tags 'tag list'
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    a space-separated list of build tags to consider satisfied during the
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    build. For more information about build tags, see the description of
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    build constraints in the documentation for the go/build package.
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  -toolexec 'cmd args'
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    a program to use to invoke toolchain programs like vet and asm.
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    For example, instead of running asm, the go command will run
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    'cmd args /path/to/asm <arguments for asm>'.
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...