include/qemu/osdep.h: Don't include qapi/error.h

Commit 57cb38b included qapi/error.h into qemu/osdep.h to get the
Error typedef.  Since then, we've moved to include qemu/osdep.h
everywhere.  Its file comment explains: "To avoid getting into
possible circular include dependencies, this file should not include
any other QEMU headers, with the exceptions of config-host.h,
compiler.h, os-posix.h and os-win32.h, all of which are doing a
similar job to this file and are under similar constraints."
qapi/error.h doesn't do a similar job, and it doesn't adhere to
similar constraints: it includes qapi-types.h.  That's in excess of
100KiB of crap most .c files don't actually need.

Add the typedef to qemu/typedefs.h, and include that instead of
qapi/error.h.  Include qapi/error.h in .c files that need it and don't
get it now.  Include qapi-types.h in qom/object.h for uint16List.

Update scripts/clean-includes accordingly.  Update it further to match
reality: replace config.h by config-target.h, add sysemu/os-posix.h,
sysemu/os-win32.h.  Update the list of includes in the qemu/osdep.h
comment quoted above similarly.

This reduces the number of objects depending on qapi/error.h from "all
of them" to less than a third.  Unfortunately, the number depending on
qapi-types.h shrinks only a little.  More work is needed for that one.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
[Fix compilation without the spice devel packages. - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2 files changed, 6 insertions, 4 deletions

diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index 5bb374c..78bef8d 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -7,8 +7,10 @@
  *
  * To avoid getting into possible circular include dependencies, this
  * file should not include any other QEMU headers, with the exceptions
- * of config-host.h, compiler.h, os-posix.h and os-win32.h, all of which
- * are doing a similar job to this file and are under similar constraints.
+ * of config-host.h, config-target.h, qemu/compiler.h,
+ * sysemu/os-posix.h, sysemu/os-win32.h, glib-compat.h and
+ * qemu/typedefs.h, all of which are doing a similar job to this file
+ * and are under similar constraints.
  *
  * This header also contains prototypes for functions defined in
  * os-*.c and util/oslib-*.c; those would probably be better split
@@ -101,8 +103,7 @@ extern int daemon(int, int);
 #endif
 
 #include "glib-compat.h"
-
-#include "qapi/error.h"
+#include "qemu/typedefs.h"
 
 #ifndef O_LARGEFILE
 #define O_LARGEFILE 0
diff --git a/include/qemu/typedefs.h b/include/qemu/typedefs.h
index fd039e0..c987db6 100644
--- a/include/qemu/typedefs.h
+++ b/include/qemu/typedefs.h
@@ -26,6 +26,7 @@ typedef struct DisplayChangeListener DisplayChangeListener;
 typedef struct DisplayState DisplayState;
 typedef struct DisplaySurface DisplaySurface;
 typedef struct DriveInfo DriveInfo;
+typedef struct Error Error;
 typedef struct EventNotifier EventNotifier;
 typedef struct FWCfgIoState FWCfgIoState;
 typedef struct FWCfgMemState FWCfgMemState;