Re: [Qemu-devel][Patch] Windows build broken

[Stefan Weil]

JonY schrieb:
>
> Ok, this patch works as intended. Thanks for the patch!
>
> Slightly off topic, but still on Windows builds broken.
>
> For some odd reason, dyngen-exec.h is always conflicting with
> stdint.h(?!!) for me. Can somebody explain why the typedefs are in
> dyngen-exec.h?
>
> Mingw does not have ffs, localtime_r, gmtime_r, which breaks when
> compiling some files.
>
> I propose adding the following for *_r functions on mingw hosts.
> #define localtime_r(x, y) memcpy(y, localtime(x), sizeof(y))
> #define gmtime_r(x, y) memcpy(y, gmtime(x), sizeof(y))
>
> There are many implementations of ffs(), but I'm unsure what it does :(

>From the man page: ffs - find first bit set in a word

Typically, gcc provides a built-in function ffs, so there is no need to get
an implementation for Windows. The missing prototype just gives a warning.
I send here a patch which adds the prototype to osdep.h (only for Win32).

gmtime_r is really missing (see hw/omap.c). This was already discussed
in another thread,
but not solved up to now.

Stefan

Index: osdep.h
===================================================================
RCS file: /sources/qemu/qemu/osdep.h,v
retrieving revision 1.11
diff -u -r1.11 osdep.h
--- osdep.h     19 Nov 2007 00:38:33 -0000      1.11
+++ osdep.h     14 Dec 2007 19:03:49 -0000
@@ -56,6 +56,7 @@
 int qemu_create_pidfile(const char *filename);
 
 #ifdef _WIN32
+int ffs(int i);
 typedef struct {
     long tv_sec;
     long tv_usec;