Add ffs() to porting library, needed by MinGW.

configure

@@ -16148,6 +16148,7 @@ fi
 
 
 
+
 for ac_func in \
 	_lwp_create \
 	_lwp_self \
@@ -16161,6 +16162,7 @@ for ac_func in \
 	chsize \
 	clone \
 	epoll_create \
+	ffs \
 	finite \
 	fork \
 	fpclass \

configure.ac

@@ -1076,6 +1076,7 @@ AC_CHECK_FUNCS(\
 	chsize \
 	clone \
 	epoll_create \
+	ffs \
 	finite \
 	fork \
 	fpclass \

dlls/itss/chm_lib.c

@@ -46,6 +46,7 @@
  ***************************************************************************/
 
 #include "config.h"
+#include "wine/port.h"
 
 #include <stdarg.h>
 #include <stdio.h>

include/config.h.in

@@ -83,6 +83,9 @@
 /* Define to 1 if you have the `epoll_create' function. */
 #undef HAVE_EPOLL_CREATE
 
+/* Define to 1 if you have the `ffs' function. */
+#undef HAVE_FFS
+
 /* Define to 1 if you have the `finite' function. */
 #undef HAVE_FINITE
 

include/wine/port.h

@@ -282,6 +282,10 @@ extern int getopt_long_only (int ___argc, char *const *___argv,
                              const struct option *__longopts, int *__longind);
 #endif  /* HAVE_GETOPT_LONG */
 
+#ifndef HAVE_FFS
+int ffs( int x );
+#endif
+
 #ifndef HAVE_FUTIMES
 struct timeval;
 int futimes(int fd, const struct timeval tv[2]);
@@ -431,6 +435,7 @@ extern long interlocked_xchg_add( long *dest, long incr );
 
 #define __WINE_NOT_PORTABLE(func) func##_is_not_portable func##_is_not_portable
 
+#define ffs                     __WINE_NOT_PORTABLE(ffs)
 #define fstatvfs                __WINE_NOT_PORTABLE(fstatvfs)
 #define futimes                 __WINE_NOT_PORTABLE(futimes)
 #define getopt_long             __WINE_NOT_PORTABLE(getopt_long)

libs/port/Makefile.in

@@ -7,6 +7,7 @@ VPATH     = @srcdir@
 MODULE    = libwine_port.a
 
 C_SRCS = \
+	ffs.c \
 	fstatvfs.c \
 	futimes.c \
 	getopt.c \

libs/port/ffs.c

+/*
+ * ffs function
+ *
+ * Copyright 2004 Hans Leidekker
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#include "config.h"
+#include "wine/port.h"
+
+#ifndef HAVE_FFS
+int ffs( int x )
+{
+    unsigned int y = (unsigned int)x;
+
+    if (y & 0x00000001) return 1;
+    if (y & 0x00000002) return 2;
+    if (y & 0x00000004) return 3;
+    if (y & 0x00000008) return 4;
+    if (y & 0x00000010) return 5;
+    if (y & 0x00000020) return 6;
+    if (y & 0x00000040) return 7;
+    if (y & 0x00000080) return 8;
+    if (y & 0x00000100) return 9;
+    if (y & 0x00000200) return 10;
+    if (y & 0x00000400) return 11;
+    if (y & 0x00000800) return 12;
+    if (y & 0x00001000) return 13;
+    if (y & 0x00002000) return 14;
+    if (y & 0x00004000) return 15;
+    if (y & 0x00008000) return 16;
+    if (y & 0x00010000) return 17;
+    if (y & 0x00020000) return 18;
+    if (y & 0x00040000) return 19;
+    if (y & 0x00080000) return 20;
+    if (y & 0x00100000) return 21;
+    if (y & 0x00200000) return 22;
+    if (y & 0x00400000) return 23;
+    if (y & 0x00800000) return 24;
+    if (y & 0x01000000) return 25;
+    if (y & 0x02000000) return 26;
+    if (y & 0x04000000) return 27;
+    if (y & 0x08000000) return 28;
+    if (y & 0x10000000) return 29;
+    if (y & 0x20000000) return 30;
+    if (y & 0x40000000) return 31;
+    if (y & 0x80000000) return 32;
+
+    return 0;
+}
+#endif /* HAVE_FFS */