GNU C Library (glibc) 2.36

GNU C Library (glibc) 2.36 builds for x86_64 and aarch64 architectures.

Built from source with the following configuration:

• Libraries: Both static (.a) and shared (.so) libraries included
• Architectures: x86_64 (native), aarch64 (native ARM64)
• Features: Full glibc functionality with static linking support
• Type: Native compilation on respective architectures
• Optimization: Optimized build without debug symbols for reduced size
• Compatibility: Supports kernel 3.2+ (covers all modern Linux distributions)

What is glibc?

The GNU C Library (glibc) is the standard C library for GNU/Linux systems. It provides:

• Core C runtime functions (malloc, printf, etc.)
• POSIX system call wrappers
• Thread support (pthreads)
• Mathematical functions (libm)
• Network and socket functions
• Locale and internationalization support

Libraries Included

Core Libraries:

• libc.a / libc.so - Main C library with standard functions
• libm.a / libm.so - Mathematical functions (sin, cos, log, etc.)
• libpthread.a / libpthread.so - POSIX threads support
• libdl.a / libdl.so - Dynamic loading support
• librt.a / librt.so - Real-time extensions
• libutil.a / libutil.so - System utility functions

Additional Libraries:

• libresolv.a / libresolv.so - DNS resolver functions
• libnss_*.a / libnss_*.so - Name Service Switch modules
• libcrypt.a / libcrypt.so - Password encryption functions
• libanl.a / libanl.so - Asynchronous name lookup

Use Cases

Static Linking:
Use the static libraries (.a files) to create fully self-contained binaries:

gcc -static -L/path/to/glibc/lib program.c -o program

Custom Runtime Environment:
Use as a complete libc replacement in containers or embedded systems:

export LD_LIBRARY_PATH=/path/to/glibc/lib:$LD_LIBRARY_PATH

Cross-Compilation Sysroot:
Use as a sysroot for cross-compilation environments.

Files

• glibc-2.36-x86_64.tar.gz: glibc build for x86_64 architecture
• glibc-2.36-aarch64.tar.gz: glibc build for aarch64 architecture

Installation

Extract the appropriate archive:

tar -xzf glibc-2.36-<arch>.tar.gz

Usage Examples

Static Linking:

# Extract glibc
tar -xzf glibc-2.36-x86_64.tar.gz

# Compile with static glibc
gcc -static -L$PWD/glibc-2.36-x86_64/lib program.c -o program

Dynamic Linking:

# Set up environment
export LD_LIBRARY_PATH=$PWD/glibc-2.36-x86_64/lib:$LD_LIBRARY_PATH

# Compile and run
gcc program.c -o program
./program

Integration with Other Builds:
This glibc can be used with the GCC, binutils, and other tool builds from this repository:

# Extract all tools
tar -xzf glibc-2.36-<arch>.tar.gz
tar -xzf gcc-<version>-<arch>.tar.gz  
tar -xzf binutils-<version>-<arch>.tar.gz

# Set up complete toolchain
export PATH=$PWD/gcc-<version>-<arch>/bin:$PWD/binutils-<version>-<arch>/bin:$PATH
export LD_LIBRARY_PATH=$PWD/glibc-2.36-<arch>/lib:$LD_LIBRARY_PATH

# For static linking
gcc -static -L$PWD/glibc-2.36-<arch>/lib program.c -o program

Compatibility Notes

• glibc 2.41 (Default): Latest stable version with newest features and security fixes
• glibc 2.36: Stable LTS-style version, good balance of features and compatibility
• Ubuntu 22.04: Ships with glibc 2.35 (between our two versions)
• Forward Compatibility: Programs built with older glibc run on systems with newer glibc
• Backward Compatibility: Programs built with newer glibc may not run on systems with older glibc
• Kernel Requirements: Built with kernel 3.2+ support (covers all modern distributions)

Version Selection Guide:

• Use 2.41: For latest features, security fixes, and forward-looking builds
• Use 2.36: For maximum compatibility with existing systems and containers

Choose based on your target deployment environment and compatibility requirements.