英文:
How to improve Golang compilation speed?
问题
我正在尝试找到一种加快 Go 程序编译速度的方法。目前编译时间大约为30秒，这使得项目的工作速度变慢。
当我运行 go build -v 时，我发现大部分时间都花在编译 go-sqlite3 上（它链接到 C 语言的 sqlite 库）。然而，由于这个库从不改变，我想知道是否有可能阻止构建工具每次都重新编译它？
英文:
I'm trying to find a way to make the compilation of a Go program faster. It is currently about 30 seconds, which makes it slow to work with the project.
When I run go build -v, I see that most of the time is spent compiling go-sqlite3 (which links to the C sqlite lib). However, since this lib never changes, I'm wondering if it's possible to prevent the build tool from recompiling this every time?
答案1
得分: 46
尝试运行go install -a github.com/mattn/go-sqlite3命令，它会将编译针对Go 1.3的包安装到你的$GOPATH中。
目前，你可能在$GOPATH/pkg/目录下安装了一个较旧的版本，因此每次构建时Go都会重新编译它。
英文:
Try go install -a github.com/mattn/go-sqlite3 which will install the compiled-against-Go-1.3 package into your $GOPATH.
Right now, you likely have an older version installed under $GOPATH/pkg/ and therefore Go is recompiling it for every build.
答案2
得分: 3
这可能是因为您升级到了go 1.3版本。
我不得不删除$GOPATH/pkg目录以摆脱旧的（不兼容的）二进制文件，
然后它就能够再次缓存编译结果了。
英文:
This is likely due to you upgrading to go 1.3
I had to remove $GOPATH/pkg to get rid of old (incompatible) binaries
and then it was able to cache compilation results again
答案3
得分: 0
在Go 1.10中，不需要运行go install等命令，只需使用go build即可。新版本使用构建缓存来确定哪些包需要重新编译。
请查看：https://tip.golang.org/doc/go1.10
英文:
In Go 1.10 no need to run go install etc. Just use go build. The new version uses a build cache to determine which packages need to be re-compiled.
Check out: https://tip.golang.org/doc/go1.10
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