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README.md | ||
build.zig |
README.md
A programming language designed for robustness, optimality, and clarity.
Feature Highlights
- Small, simple language. Focus on debugging your application rather than debugging knowledge of your programming language.
- Ships with a build system that obviates the need for a configure script or a makefile. In fact, existing C and C++ projects may choose to depend on Zig instead of e.g. cmake.
- A fresh take on error handling which makes writing correct code easier than writing buggy code.
- Debug mode optimizes for fast compilation time and crashing with a stack trace when undefined behavior would happen.
- Release mode produces heavily optimized code. What other projects call "Link Time Optimization" Zig does automatically.
- Compatible with C libraries with no wrapper necessary. Directly include C .h files and get access to the functions and symbols therein.
- Provides standard library which competes with the C standard library and is always compiled against statically in source form. Compile units do not depend on libc unless explicitly linked.
- Nullable type instead of null pointers.
- Tagged union type instead of raw unions.
- Generics so that one can write efficient data structures that work for any data type.
- No header files required. Top level declarations are entirely order-independent.
- Compile-time code execution. Compile-time reflection.
- Partial compile-time function evaluation with eliminates the need for a preprocessor or macros.
- The binaries produced by Zig have complete debugging information so you can, for example, use GDB to debug your software.
- Mark functions as tests and automatically run them with
zig test
. - Friendly toward package maintainers. Reproducible build, bootstrapping process carefully documented. Issues filed by package maintainers are considered especially important.
- Cross-compiling is a primary use case.
- In addition to creating executables, creating a C library is a primary use case. You can export an auto-generated .h file.
- For OS development, Zig supports all architectures that LLVM does. All the standard library that does not depend on an OS is available to you in freestanding mode.
Support Table
Freestanding means that you do not directly interact with the OS or you are writing your own OS.
Note that if you use libc or other libraries to interact with the OS, that counts as "freestanding" for the purposes of this table.
freestanding | linux | macosx | windows | other | |
---|---|---|---|---|---|
i386 | OK | planned | OK | OK | planned |
x86_64 | OK | OK | OK | OK | planned |
arm | OK | planned | planned | N/A | planned |
aarch64 | OK | planned | planned | planned | planned |
avr | OK | planned | planned | N/A | planned |
bpf | OK | planned | planned | N/A | planned |
hexagon | OK | planned | planned | N/A | planned |
mips | OK | planned | planned | N/A | planned |
msp430 | OK | planned | planned | N/A | planned |
nios2 | OK | planned | planned | N/A | planned |
powerpc | OK | planned | planned | N/A | planned |
r600 | OK | planned | planned | N/A | planned |
amdgcn | OK | planned | planned | N/A | planned |
riscv | OK | planned | planned | N/A | planned |
sparc | OK | planned | planned | N/A | planned |
s390x | OK | planned | planned | N/A | planned |
tce | OK | planned | planned | N/A | planned |
thumb | OK | planned | planned | N/A | planned |
xcore | OK | planned | planned | N/A | planned |
nvptx | OK | planned | planned | N/A | planned |
le | OK | planned | planned | N/A | planned |
amdil | OK | planned | planned | N/A | planned |
hsail | OK | planned | planned | N/A | planned |
spir | OK | planned | planned | N/A | planned |
kalimba | OK | planned | planned | N/A | planned |
shave | OK | planned | planned | N/A | planned |
lanai | OK | planned | planned | N/A | planned |
wasm | OK | N/A | N/A | N/A | N/A |
renderscript | OK | N/A | N/A | N/A | N/A |
Community
- IRC:
#zig
on Freenode. - Reddit: /r/zig
- Email list: ziglang@googlegroups.com
Wanted: Windows Developers
Help get the tests passing on Windows, flesh out the standard library for Windows, streamline Zig installation and distribution for Windows. Work with LLVM and LLD teams to improve PDB/CodeView/MSVC debugging. Implement stack traces for Windows in the MinGW environment and the MSVC environment.
Wanted: MacOS and iOS Developers
Flesh out the standard library for MacOS. Improve the MACH-O linker. Implement stack traces for MacOS. Streamline the process of using Zig to build for iOS.
Wanted: Android Developers
Flesh out the standard library for Android. Streamline the process of using Zig to build for Android and for depending on Zig code on Android.
Wanted: Web Developers
Figure out what are the use cases for compiling Zig to WebAssembly. Create demo projects with it and streamline experience for users trying to output WebAssembly. Work on the documentation generator outputting useful searchable html documentation. Create Zig modules for common web tasks such as WebSockets and gzip.
Wanted: Embedded Developers
Flesh out the standard library for uncommon CPU architectures and OS targets. Drive issue discussion for cross compiling and using Zig in constrained or unusual environments.
Wanted: Game Developers
Create cross platform Zig modules to compete with SDL and GLFW. Create an OpenGL library that does not depend on libc. Drive the usability of Zig for video games. Create a general purpose allocator that does not depend on libc. Create demo games using Zig.
Building
Dependencies
Build Dependencies
These compile tools must be available on your system and are used to build the Zig compiler itself:
POSIX
- gcc >= 5.0.0 or clang >= 3.6.0
- cmake >= 2.8.5
Windows
- Microsoft Visual Studio 2015
Library Dependencies
These libraries must be installed on your system, with the development files available. The Zig compiler links against them. You have to use the same compiler for these libraries as you do to compile Zig.
- LLVM, Clang, and LLD libraries == 5.x
Debug / Development Build
If you have gcc or clang installed, you can find out what ZIG_LIBC_LIB_DIR
,
ZIG_LIBC_STATIC_LIB_DIR
, and ZIG_LIBC_INCLUDE_DIR
should be set to
(example below).
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=$(pwd) -DZIG_LIBC_LIB_DIR=$(dirname $(cc -print-file-name=crt1.o)) -DZIG_LIBC_INCLUDE_DIR=$(echo -n | cc -E -x c - -v 2>&1 | grep -B1 "End of search list." | head -n1 | cut -c 2- | sed "s/ .*//") -DZIG_LIBC_STATIC_LIB_DIR=$(dirname $(cc -print-file-name=crtbegin.o))
make
make install
./zig build --build-file ../build.zig test
MacOS
ZIG_LIBC_LIB_DIR
and ZIG_LIBC_STATIC_LIB_DIR
are unused.
brew install llvm@5
brew outdated llvm@5 || brew upgrade llvm@5
mkdir build
cd build
cmake .. -DCMAKE_PREFIX_PATH=/usr/local/opt/llvm@5/ -DCMAKE_INSTALL_PREFIX=$(pwd)
make install
./zig build --build-file ../build.zig test
Release / Install Build
Once installed, ZIG_LIBC_LIB_DIR
and ZIG_LIBC_INCLUDE_DIR
can be overridden
by the --libc-lib-dir
and --libc-include-dir
parameters to the zig binary.
mkdir build
cd build
cmake .. -DCMAKE_BUILD_TYPE=Release -DZIG_LIBC_LIB_DIR=/some/path -DZIG_LIBC_INCLUDE_DIR=/some/path -DZIG_LIBC_STATIC_INCLUDE_DIR=/some/path
make
sudo make install
Test Coverage
To see test coverage in Zig, configure with -DZIG_TEST_COVERAGE=ON
as an
additional parameter to the Debug build.
You must have lcov
installed and available.
Then make coverage
.
With GCC you will get a nice HTML view of the coverage data. With clang,
the last step will fail, but you can execute
llvm-cov gcov $(find CMakeFiles/ -name "*.gcda")
and then inspect the
produced .gcov files.
Related Projects
- zig-mode - Emacs integration
- zig.vim - Vim configuration files
- vscode-zig - Visual Studio Code extension
- zig-compiler-completions - bash and zsh completions for the zig compiler
- NppExtension - Notepad++ syntax highlighting