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/proc/cpuinfo output differs from Linux


I am an MPlayer developer and was wondering why our configure script was suddenly failing to detect my K6-III CPU. Then I noticed that Cygwin /proc/cpuinfo formatting is not the same as in Linux.

  $ cat /proc/cpuinfo
  vendor id       : AuthenticAMD

  lea:~$ cat /proc/cpuinfo
  vendor_id       : GenuineIntel

Cygwin outputs "vendor id" (with a blank), while Linux uses "vendor_id" with an underscore. We use this information to identify processors and set up optimizations accordingly.

I grepped through the Cygwin sources for "vendor id" and made a small patch. It is not tested but trivial, so I expect it to be fully correct.

Diego Biurrun
2003-04-18  Diego Biurrun  <diego at biurrun dot de>

	* (format_proc_cpuinfo): Change /proc/cpuinfo "vendor id"
	string to "vendor_id" to conform with Linux systems.

Index: winsup/cygwin/
RCS file: /cvs/src/src/winsup/cygwin/,v
retrieving revision 1.28
diff -u -p -r1.28
--- winsup/cygwin/	16 Apr 2003 03:03:44 -0000	1.28
+++ winsup/cygwin/	18 Apr 2003 23:40:24 -0000
@@ -606,7 +606,7 @@ format_proc_cpuinfo (char *destbuf, size
 	  bufptr += __small_sprintf (bufptr, "processor       : %d\n", cpu_number);
 	  read_value ("VendorIdentifier", REG_SZ);
-	  bufptr += __small_sprintf (bufptr, "vendor id       : %s\n", szBuffer);
+	  bufptr += __small_sprintf (bufptr, "vendor_id       : %s\n", szBuffer);
 	  read_value ("Identifier", REG_SZ);
 	  bufptr += __small_sprintf (bufptr, "identifier      : %s\n", szBuffer);
           if (wincap.is_winnt ())
@@ -640,7 +640,7 @@ format_proc_cpuinfo (char *destbuf, size
 	  cpuid (&maxf, &vendor_id[0], &vendor_id[2], &vendor_id[1], 0);
 	  maxf &= 0xffff;
 	  vendor_id[3] = 0;
-	  bufptr += __small_sprintf (bufptr, "vendor id       : %s\n", (char *)vendor_id);
+	  bufptr += __small_sprintf (bufptr, "vendor_id       : %s\n", (char *)vendor_id);
           unsigned cpu_mhz  = 0;
           if (wincap.is_winnt ())

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