Fixes to make.py crossplatform and gcc flag-order compliant

make.py

@@ -6,8 +6,9 @@ from glob import glob
 from sane import *
 
 COMPILER = 'gcc'
-COMPILE_FLAGS = ['-g',
-                 '--std=c99',
+COMPILE_FLAGS = ['-std=c99',
+                 '-g',
+                 '-O0',
                  '-Wall',
                  '-Werror',
                  '-fopenmp']
@@ -19,7 +20,7 @@ EXE_NAME = 'main.exe'
 ROOT = os.path.dirname(os.path.realpath(__file__))
 
 if 'RELEASE' in os.environ:
-    COMPILE_FLAGS.append('-O2')
+    COMPILE_FLAGS[COMPILE_FLAGS.index('-O0')] = '-O2'
 
 def as_object(source_path):
     """Takes a source path and returns the path to the corresponding compiled object."""
@@ -43,12 +44,12 @@ def make_object_recipe(source_path):
             conditions=[condition],
             hooks=['obj_compile'])
     def compile_obj():
-        sp.run([COMPILER, *COMPILE_FLAGS,
-                '-c', source_path,
-                '-o', object_path],
-               shell=True)
+        sp.run([COMPILER, '-c', *COMPILE_FLAGS,
+                '-o', object_path,
+                source_path])
 
-source_files = glob('**/*.c', recursive=True)
+source_files = [os.path.realpath(path)
+                for path in glob('**/*.c', recursive=True)]
 
 for source_file in source_files:
     make_object_recipe(source_file)
@@ -67,8 +68,7 @@ def compile():
 def link():
     obj_files = glob(os.path.join(OBJ_DIR, '**', '*.obj').replace('\\', '/'),
                      recursive=True)
-    sp.run([COMPILER, *obj_files, *LINK_FLAGS, '-o', EXE_NAME],
-           shell=True)
+    sp.run([COMPILER, *LINK_FLAGS, '-o', EXE_NAME, *obj_files])
 
 @recipe(info='Removes all compiled objects.')
 def clean():