prepkg / gcc-toolchain

GCC toolchain targeting older glibc versions.

GCC Toolchain

GCC toolchain targeting older glibc versions, designed for building Linux binaries that run across a wide range of distributions. Intended for use inside a Docker container running Ubuntu 24.04 or later. This toolchain is built using Crosstool-NG.

Why?

The usual method for producing portable Linux binaries is to compile them on an outdated distribution (e.g., CentOS 7).

This repository provides a modern alternative: a GCC toolchain configured to target an older glibc, ensuring compatibility and preventing errors like:

/lib64/libc.so.6: version `GLIBC_2.XX' not found

Supported Toolchains

• x86_64-linux-gnu:

Component	Version
GCC	15.2.0
glibc	2.17
Binutils	2.45
GDB	16.3

• aarch64-linux-gnu:

Component	Version
GCC	15.2.0
glibc	2.17
Binutils	2.29.1
GDB	16.3

Precompiled Toolchains

If you prefer not to build the toolchain yourself, a precompiled GCC toolchain for each supported architecture can be downloaded from the releases page.

• x86_64-linux-gnu:

curl -sSLo gcc-x86_64-linux-gnu.tar.gz https://github.com/prepkg/gcc-toolchain/releases/latest/download/gcc-x86_64-linux-gnu.tar.gz

• aarch64-linux-gnu:

curl -sSLo gcc-aarch64-linux-gnu.tar.gz https://github.com/prepkg/gcc-toolchain/releases/latest/download/gcc-aarch64-linux-gnu.tar.gz

Compilation

• Clone the repository:

git clone https://github.com/prepkg/gcc-toolchain.git && cd gcc-toolchain

• Build the Docker image:

./setup.sh build-image

• Build the GCC toolchain:

./setup.sh build-toolchain

• (Optional) Check the toolchain component versions:

./setup.sh version

After compilation, the toolchains for each architecture will be available in the build directory.