Re: crosstool 0.26 for arm fail?

[Dan Kegel <dank at kegel dot com>]

Dan Kegel wrote:
> > In file included from ../sysdeps/unix/sysv/linux/sys/sysctl.h:29,
> >                  from ../include/sys/sysctl.h:2,
> >                  from ../sysdeps/unix/sysv/linux/arm/ioperm.c:49:
> > /opt/crosstool/arm-unknown-linux-gnu/gcc-3.3.1-glibc-2.3.2/arm-unknown-linux-gnu/include/linux/sysctl.h:72: 
> > error: parse error before numeric constant
> > ...
> > i remembered that i can get a workable arm chain by using
> > crosstool-0.24.
>
> the patch
>   patches/glibc-2.3.2/arm-ioperm.patch
> is said to be bogus.  Try removing it.
>
> (Also, the kernel headers for 2.4.21 (which you used)
> and the kernel headers for 2.4.24 and later differ in that they
> renamed BUS_ISA to CTL_BUS_ISA; who knows, maybe glibc
> will need adjusting to match.  See e.g.
> http://www.ussg.iu.edu/hypermail/linux/kernel/0311.0/0529.html)

Here's a possibly more correct replacement for the broken arm-ioperm.patch
It's at
http://kegel.com/crosstool/crosstool-0.27/patches/glibc-2.3.2/arm-ctl_bus_isa.patch
Comments welcome.
- Dan

--- glibc-2.3.2/sysdeps/unix/sysv/linux/arm/ioperm.c.old	2003-02-20 14:22:24.000000000 -0800
+++ glibc-2.3.2/sysdeps/unix/sysv/linux/arm/ioperm.c	2004-01-31 16:01:50.000000000 -0800
@@ -47,6 +47,12 @@
 #include <asm/page.h>
 #include <sys/sysctl.h>

+/* see http://www.ussg.iu.edu/hypermail/linux/kernel/0311.0/0529.html */
+#include <linux/version.h>
+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23))
+#define CTL_BUS_ISA BUS_ISA	/* and hope it's not the one from linux/input.h */
+#endif
+
 #define PATH_ARM_SYSTYPE	"/etc/arm_systype"
 #define PATH_CPUINFO		"/proc/cpuinfo"

@@ -80,7 +86,7 @@
  * Initialize I/O system.  There are several ways to get the information
  * we need.  Each is tried in turn until one succeeds.
  *
- * 1. Sysctl (CTL_BUS, BUS_ISA, ISA_*).  This is the preferred method
+ * 1. Sysctl (CTL_BUS, CTL_BUS_ISA, ISA_*).  This is the preferred method
  *    but not all kernels support it.
  *
  * 2. Read the value (not the contents) of symlink PATH_ARM_SYSTYPE.
@@ -100,8 +106,8 @@
 {
   char systype[256];
   int i, n;
-  static int iobase_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_BASE };
-  static int ioshift_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_SHIFT };
+  static int iobase_name[] = { CTL_BUS, CTL_BUS_ISA, BUS_ISA_PORT_BASE };
+  static int ioshift_name[] = { CTL_BUS, CTL_BUS_ISA, BUS_ISA_PORT_SHIFT };
   size_t len = sizeof(io.base);

   if (! sysctl (iobase_name, 3, &io.io_base, &len, NULL, 0)

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