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go_env [2018/04/10 16:02]
rpjday created
go_env [2018/04/10 17:04] (current)
rpjday [go env]
Line 30: Line 30:
 PKG_CONFIG="​pkg-config"​ PKG_CONFIG="​pkg-config"​
 GOGCCFLAGS="​-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/​tmp/​go-build110643148=/​tmp/​go-build -gno-record-gcc-switches"​ GOGCCFLAGS="​-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/​tmp/​go-build110643148=/​tmp/​go-build -gno-record-gcc-switches"​
 +$
 +</​code>​
 +
 +===== go help environment =====
 +
 +<​code>​
 +$ go help environment
 +The go command, and the tools it invokes, examine a few different
 +environment variables. For many of these, you can see the default
 +value of on your system by running 'go env NAME', where NAME is the
 +name of the variable.
 +
 +General-purpose environment variables:
 +
 + GCCGO
 + The gccgo command to run for 'go build -compiler=gccgo'​.
 + GOARCH
 + The architecture,​ or processor, for which to compile code.
 + Examples are amd64, 386, arm, ppc64.
 + GOBIN
 + The directory where 'go install'​ will install a command.
 + GOOS
 + The operating system for which to compile code.
 + Examples are linux, darwin, windows, netbsd.
 + GOPATH
 + For more details see: 'go help gopath'​.
 + GORACE
 + Options for the race detector.
 + See https://​golang.org/​doc/​articles/​race_detector.html.
 + GOROOT
 + The root of the go tree.
 + GOTMPDIR
 + The directory where the go command will write
 + temporary source files, packages, and binaries.
 + GOCACHE
 + The directory where the go command will store
 + cached information for reuse in future builds.
 +
 +Environment variables for use with cgo:
 +
 + CC
 + The command to use to compile C code.
 + CGO_ENABLED
 + Whether the cgo command is supported. Either 0 or 1.
 + CGO_CFLAGS
 + Flags that cgo will pass to the compiler when compiling
 + C code.
 + CGO_CFLAGS_ALLOW
 + A regular expression specifying additional flags to allow
 + to appear in #cgo CFLAGS source code directives.
 + Does not apply to the CGO_CFLAGS environment variable.
 + CGO_CFLAGS_DISALLOW
 + A regular expression specifying flags that must be disallowed
 + from appearing in #cgo CFLAGS source code directives.
 + Does not apply to the CGO_CFLAGS environment variable.
 + CGO_CPPFLAGS,​ CGO_CPPFLAGS_ALLOW,​ CGO_CPPFLAGS_DISALLOW
 + Like CGO_CFLAGS, CGO_CFLAGS_ALLOW,​ and CGO_CFLAGS_DISALLOW,​
 + but for the C preprocessor.
 + CGO_CXXFLAGS,​ CGO_CXXFLAGS_ALLOW,​ CGO_CXXFLAGS_DISALLOW
 + Like CGO_CFLAGS, CGO_CFLAGS_ALLOW,​ and CGO_CFLAGS_DISALLOW,​
 + but for the C++ compiler.
 + CGO_FFLAGS,​ CGO_FFLAGS_ALLOW,​ CGO_FFLAGS_DISALLOW
 + Like CGO_CFLAGS, CGO_CFLAGS_ALLOW,​ and CGO_CFLAGS_DISALLOW,​
 + but for the Fortran compiler.
 + CGO_LDFLAGS,​ CGO_LDFLAGS_ALLOW,​ CGO_LDFLAGS_DISALLOW
 + Like CGO_CFLAGS, CGO_CFLAGS_ALLOW,​ and CGO_CFLAGS_DISALLOW,​
 + but for the linker.
 + CXX
 + The command to use to compile C++ code.
 + PKG_CONFIG
 + Path to pkg-config tool.
 +
 +Architecture-specific environment variables:
 +
 + GOARM
 + For GOARCH=arm, the ARM architecture for which to compile.
 + Valid values are 5, 6, 7.
 + GO386
 + For GOARCH=386, the floating point instruction set.
 + Valid values are 387, sse2.
 + GOMIPS
 + For GOARCH=mips{,​le},​ whether to use floating point instructions.
 + Valid values are hardfloat (default), softfloat.
 +
 +Special-purpose environment variables:
 +
 + GOROOT_FINAL
 + The root of the installed Go tree, when it is
 + installed in a location other than where it is built.
 + File names in stack traces are rewritten from GOROOT to
 + GOROOT_FINAL.
 + GO_EXTLINK_ENABLED
 + Whether the linker should use external linking mode
 + when using -linkmode=auto with code that uses cgo.
 + Set to 0 to disable external linking mode, 1 to enable it.
 + GIT_ALLOW_PROTOCOL
 + Defined by Git. A colon-separated list of schemes that are allowed to be used
 + with git fetch/​clone. If set, any scheme not explicitly mentioned will be
 + considered insecure by 'go get'.
 $ $
 </​code>​ </​code>​
go_env.txt ยท Last modified: 2018/04/10 17:04 by rpjday