它可以生成能够调用 C 语言代码的 Go 语言源文件,也就是说所有启用了 CGO 特性的 Go 代码,都会首先经过 cgo 的"预处理"。 对test2.go,cgo 工具会在同目录生成以下文件 _obj--| |--_cgo.o // C代码编译出的链接库 |--_cgo_main.c // C代码部分的main函数 |--_cgo_flags // C代码的编译和链接...
├── _cgo_export.c ├── _cgo_export.h ├── _cgo_flags ├── _cgo_gotypes.go├── _cgo_main.c ├── main.cgo1.go└── main.cgo2.c CGO 还支持 # cgo CFLAGS LDFLAGS 设定编译连接参数,更多 CGO 的知识参考官网: 1. https://golang.org/cmd/cgo/ 2. https://blog.golang...
//go:linkname _cgo_runtime_cgocall runtime.cgocall func _cgo_runtime_cgocall(unsafe.Pointer, uintptr) int32 //go:linkname _cgo_runtime_cgocallback runtime.cgocallback func _cgo_runtime_cgocallback(unsafe.Pointer, unsafe.Pointer, uintptr, uintptr) //go:linkname _cgoCheckPointer runtime...
bash-3.2$goenvGOARCH="amd64"GOBIN=""GOEXE=""GOHOSTARCH="amd64"GOHOSTOS="darwin"GOOS="darwin"GOPATH="/Users/dashuai/go"GORACE=""GOROOT="/usr/local/Cellar/go/1.9/libexec"GOTOOLDIR="/usr/local/Cellar/go/1.9/libexec/pkg/tool/darwin_amd64"GCCGO="gccgo"CC="clang"GOGCCFLAGS="-fPI...
为了更好地理解和演示Cgo的使用,下面是一个更复杂的示例代码,演示了如何在Golang中调用一个C++类的方法: packagemain//#cgo CXXFLAGS: -std=c++11//#cgo LDFLAGS: -lstdc++//#include "example.h"import"C"typeExamplestruct{ptr*C.example_t}funcNewExample()*Example{example:=&Example{}example.ptr=C...
cgoCallersUse uint32 // if non-zero, cgoCallers in use temporarily cgoCallers *cgoCallers // cgo traceback if crashing in cgo call park note alllink *m // on allm schedlink muintptr mcache *mcache lockedg *g // 表示与当前M锁定那个g ...
golang 是默认开启 cgo 工具的,可执行 go env 命令查看 go env GO111MODULE="on"GOARCH="amd64"GOBIN=""GOCACHE="/root/.cache/go-build"GOENV="/root/.config/go/env"GOEXE=""GOEXPERIMENT=""GOFLAGS=""GOHOSTARCH="amd64"GOHOSTOS="linux"GOINSECURE=""GOMODCACHE="/root/go/pkg/mod"GONOPR...
usage: go build [-o output] [build flags] [packages] Build compiles the packages named by the import paths, along with their dependencies, but it does not install the results. If the arguments to build are a list of .go files from a single directory, ...
CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2113898159=/tmp/go-build -gno-record-gcc-switches" ...
CGO_FFLAGS="-O2 -g" CGO_LDFLAGS="-O2 -g" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -Wl,--no-gc-sections -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2384001255=/tmp/go-build -gno-record-gcc-switches"