moved vendored scs folder to avoid naming conflict

.gitmodules

@@ -1,3 +1,3 @@
 [submodule "scs"]
-	path = scs
+	path = scs_source
 	url = https://github.com/cvxgrp/scs.git

meson.build

@@ -15,28 +15,59 @@ print(incdir)
     check: true
   ).stdout().strip()
 
-incdir = include_directories('scs/include')
+incdir = include_directories('scs_source/include')
 pyincdir = include_directories('src')
-linsysinc = include_directories('scs/linsys')
-indirectinc = include_directories('scs/linsys/cpu/indirect')
+linsysinc = include_directories('scs_source/linsys')
+directinc = include_directories('scs_source/linsys/cpu/direct')
+qdldlinc = include_directories('scs_source/linsys/external/qdldl')
+amdinc = include_directories('scs_source/linsys/external/amd')
+
+
+# meson doesn't support wildcards 
+# https://mesonbuild.com/FAQ.html#why-cant-i-specify-target-files-with-a-wildcard
 
 py.extension_module(
 	'_scs_direct',
+
     'src/scspy.c',
-	'scs/src/aa.c',
-	'scs/src/cones.c',
-	'scs/src/ctrlc.c',
-	'scs/src/exp_cone.c',
-	'scs/src/linalg.c',
-	'scs/src/normalize.c',
-	'scs/src/rw.c',
-	'scs/src/scs_version.c',
-	'scs/src/scs.c',
-	'scs/src/util.c',
-	'scs/linsys/scs_matrix.c',
-	'scs/linsys/csparse.c',
-	'scs/linsys/cpu/indirect/private.c',
+	'scs_source/linsys/cpu/direct/private.c',
+
+	# scs_source/src:
+	'scs_source/src/aa.c',
+	'scs_source/src/cones.c',
+	'scs_source/src/ctrlc.c',
+	'scs_source/src/exp_cone.c',
+	'scs_source/src/linalg.c',
+	'scs_source/src/normalize.c',
+	'scs_source/src/rw.c',
+	'scs_source/src/scs_version.c',
+	'scs_source/src/scs.c',
+	'scs_source/src/util.c',
+
+	# scs_source/linsys:
+	'scs_source/linsys/scs_matrix.c',
+	'scs_source/linsys/csparse.c',
+
+	# scs_source/linsys/external/qdldl:
+	'scs_source/linsys/external/qdldl/qdldl.c',
+
+	# scs_source/linsys/external/amd:
+	'scs_source/linsys/external/amd/amd_1.c',
+	'scs_source/linsys/external/amd/amd_2.c',
+	'scs_source/linsys/external/amd/amd_aat.c',
+	'scs_source/linsys/external/amd/amd_control.c',
+	'scs_source/linsys/external/amd/amd_defaults.c',
+	'scs_source/linsys/external/amd/amd_dump.c',
+	'scs_source/linsys/external/amd/amd_global.c',
+	'scs_source/linsys/external/amd/amd_info.c',
+	'scs_source/linsys/external/amd/amd_order.c',
+	'scs_source/linsys/external/amd/amd_post_tree.c',
+	'scs_source/linsys/external/amd/amd_postorder.c',
+	'scs_source/linsys/external/amd/amd_preprocess.c',
+	'scs_source/linsys/external/amd/amd_valid.c',
+	'scs_source/linsys/external/amd/SuiteSparse_config.c',
+
 	include_directories : [
-		incdir, pyincdir, linsysinc, indirectinc, incdir_numpy],
+		incdir, pyincdir, linsysinc, directinc, qdldlinc, amdinc, incdir_numpy],
     install: true,
 )