meta: add build system

CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.31)
+project(bshell C)
+
+find_package(Python COMPONENTS Interpreter REQUIRED)
+
+execute_process(
+	COMMAND ${Python_EXECUTABLE}
+		${CMAKE_CURRENT_SOURCE_DIR}/tools/build-id.py
+	OUTPUT_VARIABLE bshell_version)
+
+file(GLOB_RECURSE bshell_sources
+	bshell/*.c
+	bshell/*.h)
+
+message(STATUS "B Shell version: ${bshell_version}")
+
+add_executable(bshell ${bshell_sources})
+
+target_compile_definitions(bshell PUBLIC
+	BSHELL_VERSION="${bshell_version}")

doc/sample/simple.bshell

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+func test-function($name) {
+	echo "Hello, $name!"
+}
+
+# Example of instantiating an FX runtime object.
+$obj = new-object -type-name fx.string -arguments "John Doe"
+
+test-function -name $obj

tools/build-id.py

@@ -0,0 +1,36 @@
+#!/usr/bin/env python3
+# vim: ft=python
+# -*- mode: python -*-
+
+import subprocess
+import sys
+import os
+
+def is_arg_set(name):
+    for arg in sys.argv:
+        if arg == '--{}'.format(name):
+            return True
+
+    return False
+
+
+def get_arg(name):
+    ret_next = False
+    for arg in sys.argv:
+        if ret_next:
+            return arg
+
+        if arg == '--{}'.format(name):
+            ret_next = True
+
+    return ''
+
+
+current_tag = subprocess.check_output(['git', 'describe', '--tags', '--abbrev=0']).decode('utf-8').strip()
+
+build_id = '{}'.format(current_tag)
+
+if sys.stdout.isatty():
+    print('{}'.format(build_id))
+else:
+    print('{}'.format(build_id), end='')