When using objdump to create intermixed source/disassembly (-S) with build/host
mingw/minsys a size-check fails for source-files with DOS-line endings (\r\n)
since this gets translated "internally" to a single char. When opening the file
in binary mode the sizes match. Proposed fix/patch:

--- binutils-2.18.50_org/binutils/objdump.c	Sat Mar  1 07:19:06 2008
+++ binutils-2.18.50/binutils/objdump.c	Thu Mar 13 12:29:47 2008
@@ -70,6 +70,14 @@
 
 #include <sys/stat.h>
 
+#ifndef O_BINARY
+#ifdef _O_BINARY
+#define O_BINARY _O_BINARY
+#else
+#define O_BINARY 0
+#endif
+#endif
+
 /* Internal headers for the ELF .stab-dump code - sorry.  */
 #define	BYTES_IN_WORD	32
 #include "aout/aout64.h"
@@ -975,7 +983,7 @@
 #endif
   const char *map;
   struct stat st;
-  int fd = open (fn, O_RDONLY);
+  int fd = open (fn, O_RDONLY | O_BINARY);
 
   if (fd < 0)
     return NULL;

------- Additional Comment #1 From H.J. Lu 2008-04-24 12:57 -------

There are so many

#ifndef O_BINARY
#ifdef _O_BINARY
#define O_BINARY _O_BINARY
#define setmode _setmode
#else
#define O_BINARY 0
#endif
#endif

in binutils sources. It should go into sysdep.h.