diff --git a/Makefile b/Makefile
index 84345ee..ac6a047 100644
--- a/Makefile
+++ b/Makefile
@@ -238,33 +238,33 @@ qapi-py = $(SRC_PATH)/scripts/qapi.py $(SRC_PATH)/scripts/ordereddict.py
 qga/qapi-generated/qga-qapi-types.c qga/qapi-generated/qga-qapi-types.h :\
 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
-		$(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, \
+		$(gen-out-type) -o qga/qapi-generated -p "qga-" -i $<, \
 		"  GEN   $@")
 qga/qapi-generated/qga-qapi-visit.c qga/qapi-generated/qga-qapi-visit.h :\
 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py \
-		$(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, \
+		$(gen-out-type) -o qga/qapi-generated -p "qga-" -i $<, \
 		"  GEN   $@")
 qga/qapi-generated/qga-qmp-commands.h qga/qapi-generated/qga-qmp-marshal.c :\
 $(SRC_PATH)/qga/qapi-schema.json $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py \
-		$(gen-out-type) -o qga/qapi-generated -p "qga-" < $<, \
+		$(gen-out-type) -o qga/qapi-generated -p "qga-" -i $<, \
 		"  GEN   $@")
 
 qapi-types.c qapi-types.h :\
 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-types.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
-		$(gen-out-type) -o "." -b < $<, \
+		$(gen-out-type) -o "." -b -i $<, \
 		"  GEN   $@")
 qapi-visit.c qapi-visit.h :\
 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-visit.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py \
-		$(gen-out-type) -o "." -b < $<, \
+		$(gen-out-type) -o "." -b -i $<, \
 		"  GEN   $@")
 qmp-commands.h qmp-marshal.c :\
 $(SRC_PATH)/qapi-schema.json $(SRC_PATH)/scripts/qapi-commands.py $(qapi-py)
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py \
-		$(gen-out-type) -o "." -m < $<, \
+		$(gen-out-type) -o "." -m -i $<, \
 		"  GEN   $@")
 
 QGALIB_GEN=$(addprefix qga/qapi-generated/, qga-qapi-types.h qga-qapi-visit.h qga-qmp-commands.h)
diff --git a/docs/qapi-code-gen.txt b/docs/qapi-code-gen.txt
index d78921f..63b03cf 100644
--- a/docs/qapi-code-gen.txt
+++ b/docs/qapi-code-gen.txt
@@ -221,7 +221,7 @@ created code.
 Example:
 
     mdroth@illuin:~/w/qemu2.git$ python scripts/qapi-types.py \
-      --output-dir="qapi-generated" --prefix="example-" < example-schema.json
+      --output-dir="qapi-generated" --prefix="example-" --input-file=example-schema.json
     mdroth@illuin:~/w/qemu2.git$ cat qapi-generated/example-qapi-types.c
     /* AUTOMATICALLY GENERATED, DO NOT MODIFY */
 
@@ -291,7 +291,7 @@ $(prefix)qapi-visit.h: declarations for previously mentioned visitor
 Example:
 
     mdroth@illuin:~/w/qemu2.git$ python scripts/qapi-visit.py \
-        --output-dir="qapi-generated" --prefix="example-" < example-schema.json
+        --output-dir="qapi-generated" --prefix="example-" --input-file=example-schema.json
     mdroth@illuin:~/w/qemu2.git$ cat qapi-generated/example-qapi-visit.c
     /* THIS FILE IS AUTOMATICALLY GENERATED, DO NOT MODIFY */
 
diff --git a/scripts/qapi-commands.py b/scripts/qapi-commands.py
index 9734ab0..8d9096f 100644
--- a/scripts/qapi-commands.py
+++ b/scripts/qapi-commands.py
@@ -369,9 +369,10 @@ def gen_command_def_prologue(prefix="", proxy=False):
 
 
 try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:o:m",
+    opts, args = getopt.gnu_getopt(sys.argv[1:], "chp:i:o:m",
                                    ["source", "header", "prefix=",
-                                    "output-dir=", "type=", "middle"])
+                                    "input-file=", "output-dir=",
+                                    "type=", "middle"])
 except getopt.GetoptError, err:
     print str(err)
     sys.exit(1)
@@ -389,6 +390,8 @@ do_h = False
 for o, a in opts:
     if o in ("-p", "--prefix"):
         prefix = a
+    elif o in ("-i", "--input-file"):
+        input_file = a
     elif o in ("-o", "--output-dir"):
         output_dir = a + "/"
     elif o in ("-t", "--type"):
@@ -420,7 +423,7 @@ except os.error, e:
     if e.errno != errno.EEXIST:
         raise
 
-exprs = parse_schema(sys.stdin)
+exprs = parse_schema(input_file)
 commands = filter(lambda expr: expr.has_key('command'), exprs)
 commands = filter(lambda expr: not expr.has_key('gen'), commands)
 
diff --git a/scripts/qapi-types.py b/scripts/qapi-types.py
index 10864ef..b463232 100644
--- a/scripts/qapi-types.py
+++ b/scripts/qapi-types.py
@@ -279,14 +279,15 @@ void qapi_free_%(type)s(%(c_type)s obj)
 
 
 try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:o:",
+    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:i:o:",
                                    ["source", "header", "builtins",
-                                    "prefix=", "output-dir="])
+                                    "prefix=", "input-file=", "output-dir="])
 except getopt.GetoptError, err:
     print str(err)
     sys.exit(1)
 
 output_dir = ""
+input_file = ""
 prefix = ""
 c_file = 'qapi-types.c'
 h_file = 'qapi-types.h'
@@ -298,6 +299,8 @@ do_builtins = False
 for o, a in opts:
     if o in ("-p", "--prefix"):
         prefix = a
+    elif o in ("-i", "--input-file"):
+        input_file = a
     elif o in ("-o", "--output-dir"):
         output_dir = a + "/"
     elif o in ("-c", "--source"):
@@ -378,7 +381,7 @@ fdecl.write(mcgen('''
 ''',
                   guard=guardname(h_file)))
 
-exprs = parse_schema(sys.stdin)
+exprs = parse_schema(input_file)
 exprs = filter(lambda expr: not expr.has_key('gen'), exprs)
 
 fdecl.write(guardstart("QAPI_TYPES_BUILTIN_STRUCT_DECL"))
diff --git a/scripts/qapi-visit.py b/scripts/qapi-visit.py
index 45ce3a9..c6579be 100644
--- a/scripts/qapi-visit.py
+++ b/scripts/qapi-visit.py
@@ -397,13 +397,14 @@ void visit_type_%(name)s(Visitor *m, %(name)s * obj, const char *name, Error **e
                 name=name)
 
 try:
-    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:o:",
+    opts, args = getopt.gnu_getopt(sys.argv[1:], "chbp:i:o:",
                                    ["source", "header", "builtins", "prefix=",
-                                    "output-dir="])
+                                    "input-file=", "output-dir="])
 except getopt.GetoptError, err:
     print str(err)
     sys.exit(1)
 
+input_file = ""
 output_dir = ""
 prefix = ""
 c_file = 'qapi-visit.c'
@@ -416,6 +417,8 @@ do_builtins = False
 for o, a in opts:
     if o in ("-p", "--prefix"):
         prefix = a
+    elif o in ("-i", "--input-file"):
+        input_file = a
     elif o in ("-o", "--output-dir"):
         output_dir = a + "/"
     elif o in ("-c", "--source"):
@@ -494,7 +497,7 @@ fdecl.write(mcgen('''
 ''',
                   prefix=prefix, guard=guardname(h_file)))
 
-exprs = parse_schema(sys.stdin)
+exprs = parse_schema(input_file)
 
 # to avoid header dependency hell, we always generate declarations
 # for built-in types in our header files and simply guard them
diff --git a/scripts/qapi.py b/scripts/qapi.py
index b474c39..07a7a82 100644
--- a/scripts/qapi.py
+++ b/scripts/qapi.py
@@ -12,6 +12,7 @@
 # See the COPYING file in the top-level directory.
 
 from ordereddict import OrderedDict
+import os
 import sys
 
 builtin_types = [
@@ -263,9 +264,9 @@ def check_exprs(schema):
         if expr.has_key('union'):
             check_union(expr, expr_elem['info'])
 
-def parse_schema(fp):
+def parse_schema(input_file):
     try:
-        schema = QAPISchema(fp)
+        schema = QAPISchema(open(input_file, "r"))
     except QAPISchemaError, e:
         print >>sys.stderr, e
         exit(1)
diff --git a/tests/Makefile b/tests/Makefile
index 42ed652..59033bb 100644
--- a/tests/Makefile
+++ b/tests/Makefile
@@ -217,17 +217,17 @@ tests/test-vmstate$(EXESUF): tests/test-vmstate.o \
 tests/test-qapi-types.c tests/test-qapi-types.h :\
 $(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-types.py
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-types.py \
-		$(gen-out-type) -o tests -p "test-" < $<, \
+		$(gen-out-type) -o tests -p "test-" -i $<, \
 		"  GEN   $@")
 tests/test-qapi-visit.c tests/test-qapi-visit.h :\
 $(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-visit.py
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-visit.py \
-		$(gen-out-type) -o tests -p "test-" < $<, \
+		$(gen-out-type) -o tests -p "test-" -i $<, \
 		"  GEN   $@")
 tests/test-qmp-commands.h tests/test-qmp-marshal.c :\
 $(SRC_PATH)/tests/qapi-schema/qapi-schema-test.json $(SRC_PATH)/scripts/qapi-commands.py
 	$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-commands.py \
-		$(gen-out-type) -o tests -p "test-" < $<, \
+		$(gen-out-type) -o tests -p "test-" -i $<, \
 		"  GEN   $@")
 
 tests/test-string-output-visitor$(EXESUF): tests/test-string-output-visitor.o $(test-qapi-obj-y) libqemuutil.a libqemustub.a
@@ -370,13 +370,14 @@ check-tests/test-qapi.py: tests/test-qapi.py
 $(patsubst %, check-%, $(check-qapi-schema-y)): check-%.json: $(SRC_PATH)/%.json
 	$(call quiet-command, PYTHONPATH=$(SRC_PATH)/scripts \
 		$(PYTHON) $(SRC_PATH)/tests/qapi-schema/test-qapi.py \
-		<$^ \
+		$^ \
 		>$*.test.out \
 		2>$*.test.err; \
 		echo $$? >$*.test.exit, \
 		"  TEST  $*.out")
 	@diff -q $(SRC_PATH)/$*.out $*.test.out
-	@diff -q $(SRC_PATH)/$*.err $*.test.err
+	@# Sanitize error messages (make them independent of build directory)
+	@perl -p -e 's|\Q$(SRC_PATH)\E/||g' $*.test.err | diff -q $(SRC_PATH)/$*.err -
 	@diff -q $(SRC_PATH)/$*.exit $*.test.exit
 
 # Consolidated targets
diff --git a/tests/qapi-schema/duplicate-key.err b/tests/qapi-schema/duplicate-key.err
index 0801c6a..768b276 100644
--- a/tests/qapi-schema/duplicate-key.err
+++ b/tests/qapi-schema/duplicate-key.err
@@ -1 +1 @@
-<stdin>:2:10: Duplicate key "key"
+tests/qapi-schema/duplicate-key.json:2:10: Duplicate key "key"
diff --git a/tests/qapi-schema/flat-union-invalid-branch-key.err b/tests/qapi-schema/flat-union-invalid-branch-key.err
index 1125caf..ccf72d2 100644
--- a/tests/qapi-schema/flat-union-invalid-branch-key.err
+++ b/tests/qapi-schema/flat-union-invalid-branch-key.err
@@ -1 +1 @@
-<stdin>:13: Discriminator value 'value_wrong' is not found in enum 'TestEnum'
+tests/qapi-schema/flat-union-invalid-branch-key.json:13: Discriminator value 'value_wrong' is not found in enum 'TestEnum'
diff --git a/tests/qapi-schema/flat-union-invalid-discriminator.err b/tests/qapi-schema/flat-union-invalid-discriminator.err
index cad9dbf..790b675 100644
--- a/tests/qapi-schema/flat-union-invalid-discriminator.err
+++ b/tests/qapi-schema/flat-union-invalid-discriminator.err
@@ -1 +1 @@
-<stdin>:13: Discriminator 'enum_wrong' is not a member of base type 'TestBase'
+tests/qapi-schema/flat-union-invalid-discriminator.json:13: Discriminator 'enum_wrong' is not a member of base type 'TestBase'
diff --git a/tests/qapi-schema/flat-union-no-base.err b/tests/qapi-schema/flat-union-no-base.err
index e2d7443..a59749e 100644
--- a/tests/qapi-schema/flat-union-no-base.err
+++ b/tests/qapi-schema/flat-union-no-base.err
@@ -1 +1 @@
-<stdin>:7: Flat union 'TestUnion' must have a base field
+tests/qapi-schema/flat-union-no-base.json:7: Flat union 'TestUnion' must have a base field
diff --git a/tests/qapi-schema/flat-union-string-discriminator.err b/tests/qapi-schema/flat-union-string-discriminator.err
index 8748270..200016b 100644
--- a/tests/qapi-schema/flat-union-string-discriminator.err
+++ b/tests/qapi-schema/flat-union-string-discriminator.err
@@ -1 +1 @@
-<stdin>:13: Discriminator 'kind' must be of enumeration type
+tests/qapi-schema/flat-union-string-discriminator.json:13: Discriminator 'kind' must be of enumeration type
diff --git a/tests/qapi-schema/funny-char.err b/tests/qapi-schema/funny-char.err
index d3dd293..bfc890c 100644
--- a/tests/qapi-schema/funny-char.err
+++ b/tests/qapi-schema/funny-char.err
@@ -1 +1 @@
-<stdin>:2:36: Stray ";"
+tests/qapi-schema/funny-char.json:2:36: Stray ";"
diff --git a/tests/qapi-schema/missing-colon.err b/tests/qapi-schema/missing-colon.err
index 9f2a355..d9d66b3 100644
--- a/tests/qapi-schema/missing-colon.err
+++ b/tests/qapi-schema/missing-colon.err
@@ -1 +1 @@
-<stdin>:1:10: Expected ":"
+tests/qapi-schema/missing-colon.json:1:10: Expected ":"
diff --git a/tests/qapi-schema/missing-comma-list.err b/tests/qapi-schema/missing-comma-list.err
index 4fe0700..e73d277 100644
--- a/tests/qapi-schema/missing-comma-list.err
+++ b/tests/qapi-schema/missing-comma-list.err
@@ -1 +1 @@
-<stdin>:2:20: Expected "," or "]"
+tests/qapi-schema/missing-comma-list.json:2:20: Expected "," or "]"
diff --git a/tests/qapi-schema/missing-comma-object.err b/tests/qapi-schema/missing-comma-object.err
index b0121b5..52b3a8a 100644
--- a/tests/qapi-schema/missing-comma-object.err
+++ b/tests/qapi-schema/missing-comma-object.err
@@ -1 +1 @@
-<stdin>:2:3: Expected "," or "}"
+tests/qapi-schema/missing-comma-object.json:2:3: Expected "," or "}"
diff --git a/tests/qapi-schema/non-objects.err b/tests/qapi-schema/non-objects.err
index a6c2dc2..334f0c9 100644
--- a/tests/qapi-schema/non-objects.err
+++ b/tests/qapi-schema/non-objects.err
@@ -1 +1 @@
-<stdin>:1:1: Expected "{"
+tests/qapi-schema/non-objects.json:1:1: Expected "{"
diff --git a/tests/qapi-schema/quoted-structural-chars.err b/tests/qapi-schema/quoted-structural-chars.err
index a6c2dc2..9b18384 100644
--- a/tests/qapi-schema/quoted-structural-chars.err
+++ b/tests/qapi-schema/quoted-structural-chars.err
@@ -1 +1 @@
-<stdin>:1:1: Expected "{"
+tests/qapi-schema/quoted-structural-chars.json:1:1: Expected "{"
diff --git a/tests/qapi-schema/test-qapi.py b/tests/qapi-schema/test-qapi.py
index 5a26ef3..634ef2d 100644
--- a/tests/qapi-schema/test-qapi.py
+++ b/tests/qapi-schema/test-qapi.py
@@ -12,10 +12,11 @@
 
 from qapi import *
 from pprint import pprint
+import os
 import sys
 
 try:
-    exprs = parse_schema(sys.stdin)
+    exprs = parse_schema(sys.argv[1])
 except SystemExit:
     raise
 
diff --git a/tests/qapi-schema/trailing-comma-list.err b/tests/qapi-schema/trailing-comma-list.err
index ff839a3..24c24b0 100644
--- a/tests/qapi-schema/trailing-comma-list.err
+++ b/tests/qapi-schema/trailing-comma-list.err
@@ -1 +1 @@
-<stdin>:2:36: Expected "{", "[" or string
+tests/qapi-schema/trailing-comma-list.json:2:36: Expected "{", "[" or string
diff --git a/tests/qapi-schema/trailing-comma-object.err b/tests/qapi-schema/trailing-comma-object.err
index f540962..30bce5e 100644
--- a/tests/qapi-schema/trailing-comma-object.err
+++ b/tests/qapi-schema/trailing-comma-object.err
@@ -1 +1 @@
-<stdin>:2:38: Expected string
+tests/qapi-schema/trailing-comma-object.json:2:38: Expected string
diff --git a/tests/qapi-schema/unclosed-list.err b/tests/qapi-schema/unclosed-list.err
index 0e837a7..fb41a86 100644
--- a/tests/qapi-schema/unclosed-list.err
+++ b/tests/qapi-schema/unclosed-list.err
@@ -1 +1 @@
-<stdin>:1:20: Expected "," or "]"
+tests/qapi-schema/unclosed-list.json:1:20: Expected "," or "]"
diff --git a/tests/qapi-schema/unclosed-object.err b/tests/qapi-schema/unclosed-object.err
index e6dc950..db3deed 100644
--- a/tests/qapi-schema/unclosed-object.err
+++ b/tests/qapi-schema/unclosed-object.err
@@ -1 +1 @@
-<stdin>:1:21: Expected "," or "}"
+tests/qapi-schema/unclosed-object.json:1:21: Expected "," or "}"
diff --git a/tests/qapi-schema/unclosed-string.err b/tests/qapi-schema/unclosed-string.err
index 948d883..12b1870 100644
--- a/tests/qapi-schema/unclosed-string.err
+++ b/tests/qapi-schema/unclosed-string.err
@@ -1 +1 @@
-<stdin>:1:11: Missing terminating "'"
+tests/qapi-schema/unclosed-string.json:1:11: Missing terminating "'"
diff --git a/tests/qapi-schema/union-invalid-base.err b/tests/qapi-schema/union-invalid-base.err
index dd8e3d1..938f969 100644
--- a/tests/qapi-schema/union-invalid-base.err
+++ b/tests/qapi-schema/union-invalid-base.err
@@ -1 +1 @@
-<stdin>:7: Base 'TestBaseWrong' is not a valid type
+tests/qapi-schema/union-invalid-base.json:7: Base 'TestBaseWrong' is not a valid type
