英文:
ldflags is ignored when building go project
问题
我想在一个代码库中拥有多个二进制文件，并通过ldflags选项设置版本。
对于只有一个二进制文件的代码库，我没有问题，它可以正常工作，但是对于包含多个二进制文件的新结构，似乎无法正常工作。
我在github上建立了一个简单的项目。
项目结构如下：
cmd/
- server/main.go
- service/main.go
libcommon/
- version.go
- ...
go.mod
Makefile
version.go
package libcommon
var (
Version = "dev"
Build = "now"
)
Makefile
BUILDDIR = bin
VERSION := $(shell git describe --tags --always --dirty)
BUILD := $(shell date +%Y-%m-%d\ %H:%M)
LDFLAGS=-ldflags="-w -s -X 'libcommon.Version=${VERSION}' -X 'libcommon.Build=${BUILD}'"
go build ${LDFLAGS} -o $(BUILDDIR)/ ./...
我运行make install命令后，二进制文件会被放置在bin/目录中，但是当我运行它时，它只会打印出默认值，而不是我期望的值。
你有什么办法可以在这个结构中使用ldflags来设置版本吗？
提前感谢你的帮助。
英文:
I want to have multiple binaries in one repository, but also set the version via ldflags option.
With just one binary in a repository I have no problem, it works, but with the new structure for multiple binaries it doesn't seem to work.
I have set up a simple project on github .
The structure is simple
cmd/
- server/main.go
- service/main.go
libcommon/
- version.go
- ...
go.mod
Makefile
version.go
package libcommon
var (
Version = "dev"
Build = "now"
)
Makefile
BUILDDIR = bin
VERSION := $(shell git describe --tags --always --dirty)
BUILD := $(shell date +%Y-%m-%d\ %H:%M)
LDFLAGS=-ldflags="-w -s -X 'libcommon.Version=${VERSION}' -X 'libcommon.Build=${BUILD}'"
go build ${LDFLAGS} -o $(BUILDDIR)/ ./...
I call make install and the binary is put into bin/ directory, but when I run it it just prints out the default values, not the ones I'd assume to be in there.
Any idea on how I can get to set the version with the ldflags in this layout?
Thanks in advance.
答案1
得分: 5
要正确设置带有-ldflags的变量，您需要使用完整的包导入路径来限定变量名：
在Makefile中：
LDFLAGS=-ldflags="-w -s \
-X 'mymodule.com/path/to/libcommon.Version=${VERSION}' \
-X 'mymodule.com/path/to/libcommon.Build=${BUILD}'"
build:
go build ${LDFLAGS} -o $(BUILDDIR)/ ./...```
<details>
<summary>英文:</summary>
To correctly set the variable with `-ldflags` you have to qualify the variable name with the [full package import path](https://golang.org/cmd/link/):
In Makefile:
LDFLAGS=-ldflags="-w -s
-X 'mymodule.com/path/to/libcommon.Version=${VERSION}'
-X 'mymodule.com/path/to/libcommon.Build=${BUILD}'"
build:
go build ${LDFLAGS} -o $(BUILDDIR)/ ./...```
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