# -*- mode: python; coding: utf-8; -*-
#
#  Codezero -- Virtualization microkernel for embedded systems.
#
#  Copyright © 2009  B Labs Ltd
#
import os, shelve, sys
from os.path import *

PROJRELROOT = '../..'

sys.path.append(PROJRELROOT)

from config.projpaths import *
from config.configuration import *
from configure import *

config = configuration_retrieve()
arch = config.arch
gcc_cpu_flag = config.gcc_cpu_flag

# Wrapper library for system calls
LIBL4_RELDIR = 'conts/libl4'
KERNEL_INCLUDE = join(PROJROOT, 'include')
LIBL4_DIR = join(PROJROOT, LIBL4_RELDIR)
LIBL4_INCLUDE = join(LIBL4_DIR, 'include')
LIBL4_LIBPATH = join(BUILDDIR, LIBL4_RELDIR)

# Some user-space libraries
LIBC_RELDIR = 'conts/libc'
LIBC_DIR = join(PROJROOT, LIBC_RELDIR)
LIBC_LIBPATH = join(BUILDDIR, LIBC_RELDIR)
LIBC_INCLUDE = [join(LIBC_DIR, 'include'), \
                join(LIBC_DIR, 'include/arch' + '/' + arch)]

LIBMEM_RELDIR = 'conts/libmem'
LIBMEM_DIR = join(PROJROOT, LIBMEM_RELDIR)
LIBMEM_LIBPATH = join(BUILDDIR, LIBMEM_RELDIR)
LIBMEM_INCLUDE = LIBMEM_DIR

env = Environment(CC = config.user_toolchain + 'gcc',
		  # We don't use -nostdinc because sometimes we need standard headers,
		  # such as stdarg.h e.g. for variable args, as in printk().
		  CCFLAGS = ['-g', '-nostdlib', '-ffreestanding', '-std=gnu99', '-Wall', \
                     '-Werror', ('-mcpu=' + gcc_cpu_flag)], \
		  LINKFLAGS = ['-nostdlib', '-T' + "include/linker.lds", "-u_start"],\
		  ASFLAGS = ['-D__ASSEMBLY__'], \
          PROGSUFFIX = '.elf', # The suffix to use for final executable
          ENV = {'PATH' : os.environ['PATH']}, # Inherit shell path
          LIBS = ['gcc', 'libl4', 'c-userspace', 'libmm', 'libmc', 'libmalloc', \
                  'gcc', 'c-userspace'], # libgcc.a - This is required for division routines.
          CPPPATH = ["#include", KERNEL_INCLUDE, LIBL4_INCLUDE, LIBC_INCLUDE, LIBMEM_INCLUDE],
          LIBPATH = [LIBL4_LIBPATH, LIBC_LIBPATH, LIBMEM_LIBPATH],
          CPPFLAGS = '-include l4/config.h -include l4/macros.h -include l4/types.h')

src = Glob('*.[cS]')
src += Glob('src/*.[cS]')

objs = env.Object(src)
prog = env.Program('main.elf', objs)
Depends(prog, 'include/linker.lds')