How to Build Multiple Go Binaries Simultaneously?

Building Multiple Package Binaries Simultaneously

As per your inquiry, building multiple package binaries simultaneously can be achieved by creating a top-level "cmd" folder structure, which has been suggested elsewhere. However, you have encountered challenges with this approach.

To build individual binaries using a "cmd" folder structure:

1. Ensure that you have the following file structure (as per your working example):

   ├── cmd
   │   ├── bin1
   │   │   └── main.go
   │   ├── bin2
   │   │   └── main.go
   ├── src
   │   ├── shared
   │   │   ├── foo
   │   │   │   └── foo.go

2. Navigate to the project's root directory.

3. Execute the following command for each binary you wish to build, replacing "" with the desired binary name:

   go build -o "<binary-name>" ./cmd/<binary-name>

For example:

go build -o bin1 ./cmd/bin1
go build -o bin2 ./cmd/bin2

This will create the "bin1" and "bin2" binaries in the project's root directory.

Alternative Approach Using a Script

If you prefer not to install the binaries into $GOPATH/bin, you can create a build script that iterates over the packages and builds each binary individually.

1. Create a script named "build-all.sh" with the following contents:

   <code class="sh">#!/bin/bash
   
   # Iterate over the packages in the "cmd" directory
   for CMD in `ls cmd`; do
   
     # Build the binary for each package
     go build -o $CMD ./cmd/$CMD
   done</code>

2. Make the script executable:

   <code class="sh">chmod +x build-all.sh</code>

3. Run the script to build all binaries in one step:

   <code class="sh">./build-all.sh</code>

This approach provides flexibility and control over the binary build process and mimics what many open source projects use.

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