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How to implement conditional compilation in Go language, in order to solve this problem, this article introduces the corresponding analysis and solution in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible method.

Conditional compilation:

There is a similar method in the Go language, called conditional compilation, but it is much weaker than in C and C++, in two ways: build tags and file suffixes.

How to use 1.build tags:

Build tags is implemented in the form of code comments, and to be written at the top of the file, there needs to be a space separated from package.

The go build directive checks the build tags of each file when compiling the project to decide whether to compile or skip the file. Build tags follows the following rules:

Different tag fields are distinguished by spaces, and they are OR relationships.

It is easy to distinguish between different tag uses within the same tag domain. They are AND relationships.

Each tag is made up of letters and numbers. The beginning indicates that the condition is not.

Example:

Compilation result:

1)。 When go build / / does not compile tags=pretest, the result is as follows:

2)。 Go build tags=pretest / / specifies that when tag is compiled, the result is as follows:

From the output of the example, we can generally see the specific use of compiling tag.

two。 Implemented through file suffixes

Go files with the _ $GOOS.go suffix determine whether to import and compile the file based on the current platform at compile time; the same applies to processor architecture judgment _ $GOARCH.go.

The two can be used together in the form of _ $GOOS_$GOARCH.go

The file name still needs a prefix. If there is no prefix, it will cause the file to be ignored at compile time. The example is as follows:

This is the answer to the question about how to realize conditional compilation in GE language. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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