Re: Creating ARM toolchain

[Dan Kegel <dank at kegel dot com>]

Hinko Kocevar wrote:
> > As for your other error,
> >  > eval `cat arm-softfloat.dat gcc-3.4.1-glibc-2.2.5.dat` sh all.sh 
> > --notest
> >  > fails with
> >  > ...
> >  > ../sysdeps/unix/sysv/linux/pread.c: In function `__libc_pread':
> >  > ../sysdeps/unix/sysv/linux/pread.c:52: error: `__NR_pread' undeclared
> >
> > $ grep __NR_pread */*
> > finds a couple patches for a similar problem for alpha and sparc64,
> > maybe you could try using the alpha version as an example for
> > how to fix this.  ...
>
> sparc64/alpha patch:
>
> +/* This is a kludge to make syscalls.list find these under the names
> +   pread and pwrite, since some kernel headers define those names
> +   and some define the *64 names for the same system calls.  */
> +#if !defined __NR_pread && defined __NR_pread64
> +# define __NR_pread __NR_pread64
> +#endif
> +#if !defined __NR_pwrite && defined __NR_pwrite64
> +# define __NR_pwrite __NR_pwrite64
> +#endif
> +
>
> That patches deal with some name defines on 64bit CPUs, I've applied 
> anyway, but it didn't solve the problem.

Er, you have to come up with a similar patch for the arm
architecture.  Try the attached patch, it seems to work for me.

--- glibc-2.2.5-arm-pwrite64.patch ------
Should fix

../sysdeps/unix/sysv/linux/pread.c: In function `__libc_pread':
../sysdeps/unix/sysv/linux/pread.c:52: error: `__NR_pread' undeclared (first use in this function)
../sysdeps/unix/sysv/linux/pread.c:52: error: (Each undeclared identifier is reported only once
../sysdeps/unix/sysv/linux/pread.c:52: error: for each function it appears in.)
make[2]: *** [/home/dank/crosstool-0.28/build/arm-9tdmi-linux-gnu/gcc-3.4.1-glibc-2.2.5/build-glibc/posix/pread.o] Error 1
make[2]: Leaving directory `/home/dank/crosstool-0.28/build/arm-9tdmi-linux-gnu/gcc-3.4.1-glibc-2.2.5/glibc-2.2.5/posix'
make[1]: *** [posix/subdir_lib] Error 2

Copied from similar patch for alpha.

--- glibc-2.2.5-orig/sysdeps/unix/sysv/linux/arm/sysdep.h	2001-07-05 21:56:13.000000000 -0700
+++ glibc-2.2.5/sysdeps/unix/sysv/linux/arm/sysdep.h	2004-08-07 10:45:26.000000000 -0700
@@ -32,6 +32,15 @@
 #define SWI_BASE  (0x900000)
 #define SYS_ify(syscall_name)	(__NR_##syscall_name)

+/* This is a kludge to make syscalls.list find these under the names
+   pread and pwrite, since some kernel headers define those names
+   and some define the *64 names for the same system calls.  */
+#if !defined __NR_pread && defined __NR_pread64
+# define __NR_pread __NR_pread64
+#endif
+#if !defined __NR_pwrite && defined __NR_pwrite64
+# define __NR_pwrite __NR_pwrite64
+#endif

 #ifdef __ASSEMBLER__



--
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