using the zig build system, this repository bootstraps cmake 3.30.1 without any system cmake or the usual shellscript method. it takes a while and is only tested on x64 linux, but can be used to build your C/C++ dependency libraries.

the package also has a custom CMakeStep that will configure and build and install a cmake project, and providdes a .install(b, name) function to get the artifacts:

zig fetch --save git+https://github.com/dasimmet/zig-cmake.git

build.zig (from example):

pub fn build() void {
  const cmake_import = b.lazyImport(@This(), "cmake");

  if (cmake_import) |cmake| {
    const cmakeStep = cmake.addCMakeStep(b, .{
      .target = b.standardTargetOptions(.{}),
      .name = "cmake_my_project",
      .source_dir = b.path(""), // or path to directory containing CMakeLists.txt
        .defines = &.{
            .{ "CMAKE_BUILD_TYPE", if (optimize == .Debug) "Debug" else "Release" },
        },
    });
  }
  const install_step = cmakeStep.install(b, ""); // installs the 
  b.getInstallStep().dependOn(&install_step.step);
}

• ✅ stage1 linux

• ✅ stage2 linux

• ✅ example build step linux

• ✅ stage1 windows

• 🏃‍♂️ stage2 windows

• 🏃‍♂️ example build step windows

• ✅ stage1 macos

• 🏃‍♂️ stage2 macos

• 🏃‍♂️ example build step macos

• 🏃‍♂️test building other cmake projects

• 🏃‍♂️try to link cmake fully static

• 🏃‍♂️test other architectures