go 安全编译选项

[humingcheng]

export CGO_ENABLED=${CGO_ENABLED:-1}
export CGO_CFLAGS="${CGO_CFLAGS} -fstack-protector-strong -D_FORTIFY_SOURCE=2 -O2"
export GO_LDFLAGS="${GO_LDFLAGS} -linkmode=external -extldflags \"-Wl,-z,now\""