Скачать или смотреть Building Boost as Shared Libraries for Android

Discover how to compile `Boost` 1.70 as shared libraries for Android using NDK r21b, including troubleshooting tips and best practices.
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Building Boost as Shared Libraries for Android: A Comprehensive Guide

Compiling libraries for Android can often be a challenging task, especially when working with complex libraries like Boost. Many developers find themselves stumped when trying to compile Boost as shared libraries instead of static ones. If you are facing difficulties in building Boost as shared libraries for Android, this post will guide you step-by-step through the process, including the necessary configurations and troubleshooting tips.

The Problem

While compiling Boost 1.70 for Android using the NDK r21b, some developers successfully manage to create static libraries. However, when switching to shared library compilation, issues often arise. For example, common errors might include messages indicating that the linker command failed or that certain executables cannot be found.

Example Error

One common error message that developers encounter is:

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This typically points to a misconfiguration in the build process, particularly in finding the correct linker (ld.exe).

The Solution

Here’s a structured approach to solving the compilation issues and successfully building Boost as shared libraries for Android.

Step 1: Set Up the Environment

Before compiling Boost, ensure that your environment variables are correctly set up. Here’s how you can set them on a Windows environment:

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Step 2: Configure user-config.jam

In order for the build system to find the appropriate tools and paths, you need to correctly configure the user-config.jam file. Here’s a typical configuration:

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Step 3: Building Shared Libraries

To build Boost as shared libraries instead of static ones, you need to adjust your command line parameters when invoking the build process. Use the following command:

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Step 4: Dealing with Errors

If you encounter issues such as "unable to execute command," it likely means the linker (ld) is not correctly configured or found. To resolve this error:

Check if ld.exe exists in the NDK directory. For example, it can usually be found under:

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Modify your user-config.jam to include the link flags specifying the target platform. Add this line:

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Try running the build command again.

Conclusion

By following this guide, you should be able to compile Boost as shared libraries for Android successfully. Remember that setting up the correct environment and configurations is key to overcoming common build issues. If you continue to run into problems, double-check your paths and ensure that all necessary tools are correctly installed and accessible.

Keep this guide handy for your future compilation needs, and happy coding!