How to build using CGO_ENABLED=0 flag

[kidambisrinivas]

How do we build a service using this library with CGO_ENABLED=0

Typically I build using this command:
CGO_ENABLED=0 GOOS=linux go build ./cmd/test_scripts

I got this error: go build github.com/myuser/myservice/vendor/github.com/glenn-brown/golang-pkg-pcre/src/pkg/pcre: build constraints exclude all Go files in /home/myuser/gocode/src/github.com/myuser/myservice/vendor/github.com/glenn-brown/golang-pkg-pcre/src/pkg/pcre

I tried this, but still get the same error
CGO_ENABLED=0 CGO_LDFLAGS="-lpcre" CGO_CFLAGS="-I/usr/lib/x86_64-linux-gnu" GOOS=linux go build -ldflags="-lpcre" -gcflags="-I/usr/lib/x86_64-linux-gnu" ./cmd/test_scripts

[dikki0]

@kidambisrinivas I am struggling with the same problem. Did you maybe find another solution?

I'm trying to build this for aws Lambda, in a Serverless environment, so it cannot use any outside c functions.

[kidambisrinivas]

@dikki0 I was mostly interested in support for negative look ahead regex support in Go. In the end, I used this library import github.com/h2so5/goback/regexp (source) which doesnt require libpcre++ package as a dependency. So building a static binary of my service became straightforward and worked with the same command above.

CGO_ENABLED=0 GOOS=linux go build ./cmd/test_scripts

The h2so5/goback does not guarantee linear processing time. So I switch between using native golang regex, (which supports most of PCRE) when my I dont need lookahead based regexes and h2so5/goback package when I need lookahead based regexes

[dikki0]

Thanks for your answer.
So you found an alternative for your use case. I will check it out, see if I can use it in mine.

[Elara6331]

For anyone who comes across this later, I've made a CGo-free port of pcre2 at go.arsenm.dev/pcre. It does not build on Windows, but works on Linux and macOS (both Intel and M1).