Initial commit

loader/SConstruct

@@ -0,0 +1,51 @@
+Import("*")
+import os
+import glob
+from os.path import join
+
+arch = 'arm'
+clibvariant = 'baremetal'
+# C library information
+clibroot = join(os.getcwd(), '../libs/c')
+clibpath = join(join(clibroot, 'build'), clibvariant)
+cincpath = [join(clibroot, 'include'), join(clibroot,'include/arch/%s' % arch)]
+crt0objpath = join(clibroot, 'build/crt/sys-%s/arch-%s/crt0.o' % (clibvariant, arch))
+clibname = "c-" + clibvariant
+
+# Elf library information
+elflibpath = os.getcwd() + '/../libs/elf'
+elfincpath = [elflibpath + '/include']
+
+env = Environment(CC = 'arm-none-linux-gnueabi-gcc',
+		  CCFLAGS = ['-g', '-nostdlib', '-ffreestanding'],
+		  LINKFLAGS = ['-nostdlib', '-Tmylink.lds'],
+		  ENV = {'PATH' : os.environ['PATH']},
+		  PROGSUFFIX = '.axf',
+		  LIBS = ['elf', clibname, 'gcc', clibname], # Note there's a dependency order here.
+		  						# Left libs depend on libs on their right.
+		  CPPPATH = ['#'] + cincpath + elfincpath)
+
+env.Append(LIBPATH = [clibpath, elflibpath])
+
+def src_glob(search):
+    """Src glob is used to find source files easily e.g: src_glob("src/*.c"),
+    the reason we can't just use glob is due to the way SCons handles out
+    of directory builds."""
+    dir = os.path.dirname(search)
+    if dir != "":
+        dir = dir + os.sep
+    src_path = Dir('.').srcnode().abspath
+    files = glob.glob(src_path + os.sep + search)
+    files = map(os.path.basename, files)
+    ret_files = []
+    for file in files:
+        ret_files.append(dir + file)
+    return ret_files
+
+src = src_glob("*.c")
+src += src_glob("*.S")
+
+obj_list = env.Object(src)
+loader = env.Program("final", obj_list + [crt0objpath])
+
+