build from source failed on macOS

[leleliu008]

reported error messages

# github.com/anatol/smart.go
/Users/runner/go/pkg/mod/github.com/anatol/smart.go@v0.0.0-20220917195147-c0b00d90f8cc/nvme.go:1209:10: undefined: NVMeDevice
/Users/runner/go/pkg/mod/github.com/anatol/smart.go@v0.0.0-20220917195147-c0b00d90f8cc/nvme.go:1213:10: undefined: NVMeDevice
/Users/runner/go/pkg/mod/github.com/anatol/smart.go@v0.0.0-20220917195147-c0b00d90f8cc/nvme.go:1228:10: undefined: NVMeDevice
/Users/runner/go/pkg/mod/github.com/anatol/smart.go@v0.0.0-20220917195147-c0b00d90f8cc/smart.go:34:12: undefined: OpenNVMe

source version
https://github.com/xxxserxxx/gotop/archive/v4.2.0.tar.gz

host environment

macos-11.7 x86_64

go env

GO111MODULE="auto"
GOARCH="amd64"
GOBIN=""
GOCACHE="/Users/runner/Library/Caches/go-build"
GOENV="/Users/runner/Library/Application Support/go/env"
GOEXE=""
GOEXPERIMENT=""
GOFLAGS=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOINSECURE=""
GOMODCACHE="/Users/runner/go/pkg/mod"
GONOPROXY=""
GONOSUMDB=""
GOOS="darwin"
GOPATH="/Users/runner/go"
GOPRIVATE=""
GOPROXY="https://proxy.golang.org/,direct"
GOROOT="/usr/local/Cellar/go/1.19.2/libexec"
GOSUMDB="sum.golang.org"
GOTMPDIR=""
GOTOOLDIR="/usr/local/Cellar/go/1.19.2/libexec/pkg/tool/darwin_amd64"
GOVCS=""
GOVERSION="go1.19.2"
GCCGO="gccgo"
GOAMD64="v1"
AR="/Applications/Xcode_13.2.1.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ar"
CC="/opt/ppkg/core/bin/proxy-cc"
CXX="/opt/ppkg/core/bin/proxy-c++"
CGO_ENABLED="0"
GOMOD="/opt/ppkg/installing/gotop/src/go.mod"
GOWORK=""
CGO_CFLAGS="-isysroot /Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -Qunused-arguments -fPIC -fno-common -Os -Wno-error=unused-command-line-argument"
CGO_CPPFLAGS="-I/opt/ppkg/installing/gotop/inc -isysroot /Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -Qunused-arguments -DNDEBUG"
CGO_CXXFLAGS="-isysroot /Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -Qunused-arguments -fPIC -fno-common -Os -Wno-error=unused-command-line-argument"
CGO_FFLAGS="-g -O2"
CGO_LDFLAGS="-L/opt/ppkg/installing/gotop/lib -isysroot /Applications/Xcode_13.2.1.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk -Wl,-search_paths_first -Wl,-S"
PKG_CONFIG="/usr/local/bin/pkg-config"
GOGCCFLAGS="-fPIC -arch x86_64 -m64 -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fdebug-prefix-map

build instruction

go build -trimpath -v -ldflags '-X main.Version=v4.2.0 -X main.BuildDate=20221030T141516 -s -w' -o ./out/ ./cmd/gotop

[leleliu008]

cgo must be enabled when building on macOS.

following config will do the trick:

export CGO_ENABLED=1

this infomation is very important, but it is not motioned in README.