patches/glibc/2.3.6/100-arm-ctl_bus_isa.patch
author Johannes Stezenbach <js@sig21.net>
Thu Jul 29 19:47:16 2010 +0200 (2010-07-29)
changeset 2045 fdaa6c7f6dea
permissions -rw-r--r--
cc/gcc: add option to compile against static libstdc++, for gcc-4.4 and newer

Idea and know-how taken from CodeSourcery build script.

Normal build:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb77f3000)
libstdc++.so.6 => /usr/lib/libstdc++.so.6 (0xb76e8000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb75a1000)
libm.so.6 => /lib/i686/cmov/libm.so.6 (0xb757a000)
/lib/ld-linux.so.2 (0xb77f4000)
libgcc_s.so.1 => /lib/libgcc_s.so.1 (0xb755c000)

CC_STATIC_LIBSTDCXX=y:
$ ldd arm-unknown-linux-uclibcgnueabi-gcc
linux-gate.so.1 => (0xb7843000)
libc.so.6 => /lib/i686/cmov/libc.so.6 (0xb76e6000)
/lib/ld-linux.so.2 (0xb7844000)

I made CC_STATIC_LIBSTDCXX default=y since I think
it is always desirable.

Signed-off-by: Johannes Stezenbach <js@sig21.net>
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Applies to both glibc-2.2.5 and glibc-2.3.2, and probably glibc cvs as of Aug 2004.
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Needed to build glibc with linux kernels 2.4.23 or higher on ARM, 
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Fixes following error:
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../sysdeps/unix/sysv/linux/arm/ioperm.c: In function `init_iosys':
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../sysdeps/unix/sysv/linux/arm/ioperm.c:103: error: `BUS_ISA' undeclared (first use in this function)
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../sysdeps/unix/sysv/linux/arm/ioperm.c:103: error: (Each undeclared identifier is reported only once
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../sysdeps/unix/sysv/linux/arm/ioperm.c:103: error: for each function it appears in.)
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../sysdeps/unix/sysv/linux/arm/ioperm.c:103: error: initializer element is not constant
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../sysdeps/unix/sysv/linux/arm/ioperm.c:103: error: (near initialization for `iobase_name[1]')
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../sysdeps/unix/sysv/linux/arm/ioperm.c:104: error: initializer element is not constant
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../sysdeps/unix/sysv/linux/arm/ioperm.c:104: error: (near initialization for `ioshift_name[1]')
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make[2]: *** [/home/dank/crosstool-0.28/build/arm-softfloat-linux-gnu/gcc-3.3.4-glibc-2.2.5/build-glibc/misc/ioperm.o] Error 1
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cf. "[SYSCTL] BUS_ISA -> CTL_BUS_ISA",  http://www.ussg.iu.edu/hypermail/linux/kernel/0311.0/0529.html
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--- glibc-2.3.2/sysdeps/unix/sysv/linux/arm/ioperm.c.old	2003-02-20 14:22:24.000000000 -0800
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+++ glibc-2.3.2/sysdeps/unix/sysv/linux/arm/ioperm.c	2004-01-31 16:01:50.000000000 -0800
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@@ -47,6 +47,12 @@
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 #include <asm/page.h>
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 #include <sys/sysctl.h>
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+/* see http://www.ussg.iu.edu/hypermail/linux/kernel/0311.0/0529.html */
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+#include <linux/version.h>
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+#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,4,23))
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+#define CTL_BUS_ISA BUS_ISA	/* and hope it's not the one from linux/input.h */
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+#endif
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+
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 #define PATH_ARM_SYSTYPE	"/etc/arm_systype"
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 #define PATH_CPUINFO		"/proc/cpuinfo"
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@@ -80,7 +86,7 @@
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  * Initialize I/O system.  There are several ways to get the information
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  * we need.  Each is tried in turn until one succeeds.
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  *
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- * 1. Sysctl (CTL_BUS, BUS_ISA, ISA_*).  This is the preferred method
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+ * 1. Sysctl (CTL_BUS, CTL_BUS_ISA, ISA_*).  This is the preferred method
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  *    but not all kernels support it.
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  *
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  * 2. Read the value (not the contents) of symlink PATH_ARM_SYSTYPE.
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@@ -100,8 +106,8 @@
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 {
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   char systype[256];
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   int i, n;
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-  static int iobase_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_BASE };
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-  static int ioshift_name[] = { CTL_BUS, BUS_ISA, BUS_ISA_PORT_SHIFT };
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+  static int iobase_name[] = { CTL_BUS, CTL_BUS_ISA, BUS_ISA_PORT_BASE };
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+  static int ioshift_name[] = { CTL_BUS, CTL_BUS_ISA, BUS_ISA_PORT_SHIFT };
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   size_t len = sizeof(io.base);
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   if (! sysctl (iobase_name, 3, &io.io_base, &len, NULL, 0)
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Signed-off-by: Robert P. J. Day <rpjday@mindspring.com>