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How Can I Cross-Compile from Windows to Linux Using Crosstool-ng?

Mary-Kate Olsen

Nov 22, 2024 am 10:26 AM

How Can I Cross-Compile from Windows to Linux Using Crosstool-ng?

Cross-Compiling from Windows to Linux with Crosstool-ng

Introduction:

Cross-compiling allows you to build software for a different operating system or architecture than the one you're currently using. This can be useful for developing Linux applications on a Windows machine.

Solution:

Crosstool-ng is a toolset that simplifies the process of building cross-compilers.

Steps:

Install Cygwin: Ensure you have Cygwin installed with development packages.
Download Crosstool-ng: Visit the Crosstool-ng website and download the latest version.
Extract the Tarball: Extract the crosstool-ng tarball using the appropriate command.
Configure Crosstool-ng: Run the ./configure script and address any missing tool issues by installing them in Cygwin (e.g., flex, libtool).
Build and Install Crosstool-ng: Run "make" and "make install" to build and install Crosstool-ng.
Create a Build Directory: Establish a directory for building the cross-compiler, such as "/usr/src/cross-linux-gnu-root".
Enable Case Sensitivity: Enable system-wide case sensitivity in the Windows registry.
Mount the Directory Case-sensitively: Mount the build directory as case-sensitive using a command like "mount c:/cygwin/usr/src/cross-linux-gnu-root /usr/src/cross-linux-gnu -o binary,posix=1".
Configure the Cross-Compiler: Enter the build directory and run "ct-ng menuconfig" to configure the cross-compiler. Specify the target architecture, subarchitecture, kernel, and C library settings.
Enable Workarounds: Enable the EXPERIMENTAL option and enable Build some companion tools with make 3.81 to resolve potential issues.
Apply Patches: Apply three file patches to resolve various errors (check the answer text for patch details).
Build the Cross-Compiler: Run "ct-ng build" to generate the cross-compiler.
Use the Cross-Compiler: The cross-compiler will be in the build directory, which you can use directly or via a Makefile.

Note: Building the cross-compiler can be time-consuming. You can access a prebuilt version of gcc 4.8.1 provided by osm0sis.

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