Added options to compile stdlib and init executable.

targets/_any/init/SConscript

@@ -0,0 +1,23 @@
+
+Import('env')
+
+init_sources = Split('''
+    src/main.cpp
+''')
+
+init_env = env.Clone()
+init_env['AS'] = 'x86_64-elf-baos-as'
+init_env['CC'] = 'x86_64-elf-baos-gcc'
+init_env['CXX'] = 'x86_64-elf-baos-g++'
+init_env['LD'] = 'x86_64-elf-baos-g++'
+init_env.Append(CXXFLAGS = ['-fno-exceptions', '-fno-rtti', '-std=c++20'])
+init_env.Append(CPPPATH = ['#targets/_any/bastl/include', '#targets/_any/stdlib/include', '#targets/_any/kernel/include'])
+
+prog_init = init_env.Program(
+    target = f'#sysroot_{init_env["TARGET_ARCH"]}/bin/init',
+    source = init_sources,
+    LIBS = [init_env.File('#stdlib/libc.a')]
+)
+init_env.Alias('init', prog_init)
+
+Return('env')