cosmocc toolchain

set(CMAKE_SYSTEM_NAME Generic)
unset(CMAKE_SYSTEM_PROCESSOR)

set(CMAKE_ASM_COMPILER "cosmocc")

set(CMAKE_C_COMPILER "cosmocc")

set(CMAKE_CXX_COMPILER "cosmoc++")

find_program(CMAKE_AR "cosmoar" REQUIRED)

find_program(CMAKE_RANLIB "cosmoranlib" REQUIRED)

set(CMAKE_USER_MAKE_RULES_OVERRIDE
    "${CMAKE_CURRENT_LIST_DIR}/cosmocc-override.cmake")

set(CMAKE_ASM_OUTPUT_EXTENSION ".o")
set(CMAKE_C_OUTPUT_EXTENSION ".o")
set(CMAKE_CXX_OUTPUT_EXTENSION ".o")

#include <stdio.h>
// cosmocc adds a cosmo.h header.
#include <cosmo.h>

int main() {
    printf("IsLinux()=%d\n", IsLinux());
    printf("IsMetal()=%d\n", IsMetal());
    printf("IsWindows()=%d\n", IsWindows());
    printf("IsBsd()=%d\n", IsBsd());
    printf("IsXnu()=%d\n", IsXnu());
    printf("IsFreebsd()=%d\n", IsFreebsd());
    printf("IsOpenbsd()=%d\n", IsOpenbsd());
    printf("IsNetbsd()=%d\n", IsNetbsd());
    return 0;
}

cmake_minimum_required(VERSION 3.30)

project(cosmocc-toolchain)

add_executable(cosmocc-toolchain main.c)

cmake --toolchain ./cmake/cosmocc.cmake -B ./build/

CMake Error at cmake/cosmocc.cmake:12 (find_program):
  Could not find CMAKE_RANLIB using the following names: cosmoranlib
Call Stack (most recent call first):
  /usr/local/share/cmake-3.31/Modules/CMakeDetermineSystem.cmake:146 (include)
  CMakeLists.txt:3 (project)


CMake Error: CMake was unable to find a build program corresponding to "Unix Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
-- Configuring incomplete, errors occurred!

cmake --build ./build/

no such file or directory
CMake Error: Generator: execution of make clean failed.

./build/cosmocc-toolchain

sh: 1: ./build/cosmocc-toolchain: not found