49817c6add
Add std.Target.Cpu.Model.generic which is even more empty than baseline. CPU model and feature detection uses this rather than baseline. Rename cpu_detected to cpu_detection_unimplemented and flip the logic. It can be relied on by stage2.zig to decide whether the LLVM workaround is needed without also checking the CrossTarget. Move the CPU detection to after the OS detection, and use the detected OS for the CPU detection. This is relevant because operating systems sometimes emulate certain CPU features, so knowing the OS and version is relevant for determining CPU features. Prepare for #4592 by passing the CPU arch to the detection code, instead of having it rely on Target.current. The CPU model & feature detection logic is modified. Before: * Detect actual features * Use as hint when detecting CPU model * Populate dependencies of CPU model features * Merge that into the actual features set After: * Detect actual features * Use as hint when detecting CPU model * Add known CPU model features to actual features * Detect actual features again, overriding known CPU model features * Populate dependencies
A general-purpose programming language and toolchain for maintaining robust, optimal, and reusable software.
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Building from Source
Note that you can download a binary of master branch.
Stage 1: Build Zig from C++ Source Code
Dependencies
POSIX
- cmake >= 2.8.5
- gcc >= 5.0.0 or clang >= 3.6.0
- LLVM, Clang, LLD development libraries == 9.x, compiled with the same gcc or clang version above
- Use the system package manager, or build from source.
Windows
- cmake >= 3.15.3
- Microsoft Visual Studio. Supported versions:
- 2015 (version 14)
- 2017 (version 15.8)
- 2019 (version 16)
- LLVM, Clang, LLD development libraries == 9.x
- Use the pre-built binaries or build from source.
Instructions
POSIX
mkdir build
cd build
cmake ..
make install
MacOS
brew install cmake llvm@9
brew outdated llvm@9 || brew upgrade llvm@9
mkdir build
cd build
cmake .. -DCMAKE_PREFIX_PATH=$(brew --prefix llvm)
make install
Windows
See https://github.com/ziglang/zig/wiki/Building-Zig-on-Windows
Stage 2: Build Self-Hosted Zig from Zig Source Code
Note: Stage 2 compiler is not complete. Beta users of Zig should use the Stage 1 compiler for now.
Dependencies are the same as Stage 1, except now you can use stage 1 to compile Zig code.
bin/zig build --prefix $(pwd)/stage2
This produces ./stage2/bin/zig which can be used for testing and development.
Once it is feature complete, it will be used to build stage 3 - the final compiler
binary.
Stage 3: Rebuild Self-Hosted Zig Using the Self-Hosted Compiler
Note: Stage 2 compiler is not yet able to build Stage 3. Building Stage 3 is not yet supported.
Once the self-hosted compiler can build itself, this will be the actual compiler binary that we will install to the system. Until then, users should use stage 1.
Debug / Development Build
./stage2/bin/zig build --prefix $(pwd)/stage3
Release / Install Build
./stage2/bin/zig build install -Drelease