patches/glibc/2.9/550-2.9-elf-begin.patch
author "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
Wed May 25 20:23:48 2011 +0200 (2011-05-25)
branch1.11
changeset 2552 cc285cc98e65
permissions -rw-r--r--
debug/gdb: fix runtime sysroot

This patch sets the runtime sysroot to fix the following GDB warning:
"Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code."

The sysroot can later be changed within gdb with the `set sysroot`
command if necessary.

Signed-off-by: "Benoît THÉBAUDEAU" <benoit.thebaudeau@advansee.com>
(transplanted from 7690196856ce4a4700d1887cc3adf80acc627c52)
yann@1327
     1
[ALL  ]    powerpc-860-linux-gnu-gcc       -nostdlib -nostartfiles -shared                        -Wl,-z,combreloc -Wl,-z,relro -Wl,--hash-style=both -Wl,-z,defs -Wl,--verbose 2>&1 |                    LC_ALL=C                sed -e '/^=========/,/^=========/!d;/^=========/d'                          -e 's/. = 0 + SIZEOF_HEADERS;/& _begin = . - SIZEOF_HEADERS;/'              > /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/ld.so.lds
yann@1327
     2
[ALL  ]    powerpc-860-linux-gnu-gcc       -nostdlib -nostartfiles -shared -o /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/ld.so                                         -Wl,-z,combreloc -Wl,-z,relro -Wl,--hash-style=both -Wl,-z,defs                         /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/librtld.os -Wl,--version-script=/local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/ld.map                                  -Wl,-soname=ld.so.1 -T /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/ld.so.lds
yann@1327
     3
[ALL  ]    /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/librtld.os: In function `_dl_start_final':
yann@1327
     4
[ALL  ]    rtld.c:(.text+0x2fe): undefined reference to `_begin'
yann@1327
     5
[ALL  ]    /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/gcc-core-shared/lib/gcc/powerpc-860-linux-gnu/4.3.3/../../../../powerpc-860-linux-gnu/bin/ld: /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/ld.so: hidden symbol `_begin' isn't defined
yann@1327
     6
[ALL  ]    /local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/gcc-core-shared/lib/gcc/powerpc-860-linux-gnu/4.3.3/../../../../powerpc-860-linux-gnu/bin/ld: final link failed: Nonrepresentable section on output
yann@1327
     7
[ALL  ]    collect2: ld returned 1 exit status
yann@1327
     8
[ERROR]    make[3]: *** [/local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc/elf/ld.so] Error 1
yann@1327
     9
[ALL  ]    make[3]: Leaving directory `/local/nyet-build/crosstool-ng-svn/targets/src/glibc-2.9/elf'
yann@1327
    10
[ERROR]    make[2]: *** [elf/subdir_lib] Error 2
yann@1327
    11
[ALL  ]    make[2]: Leaving directory `/local/nyet-build/crosstool-ng-svn/targets/src/glibc-2.9'
yann@1327
    12
[ERROR]    make[1]: *** [all] Error 2
yann@1327
    13
[ALL  ]    make[1]: Leaving directory `/local/nyet-build/crosstool-ng-svn/targets/powerpc-860-linux-gnu/build/build-libc'
yann@1327
    14
[ERROR]    Build failed in step 'Installing C library'
yann@1327
    15
[ERROR]    Error happened in '/local/nyet-build/crosstool-ng-svn/scripts/functions' in function 'CT_DoExecLog' (line unknown, sorry)
yann@1327
    16
[ERROR]          called from '/local/nyet-build/crosstool-ng-svn/scripts/build/libc/glibc.sh' at line # 504 in function 'do_libc'
yann@1327
    17
[ERROR]          called from '/local/nyet-build/crosstool-ng-svn/scripts/crosstool-NG.sh' at line # 478 in function 'main'
yann@1327
    18
yann@1327
    19
--- glibc-2.9_orig/elf/Makefile	2009-03-26 20:26:42.000000000 -0700
yann@1327
    20
+++ glibc-2.9/elf/Makefile	2009-03-26 20:14:11.000000000 -0700
yann@1327
    21
@@ -304,7 +304,7 @@
yann@1327
    22
 		  $(LDFLAGS-rtld) -Wl,-z,defs -Wl,--verbose 2>&1 |	\
yann@1327
    23
 		  LC_ALL=C \
yann@1327
    24
 		  sed -e '/^=========/,/^=========/!d;/^=========/d'	\
yann@1327
    25
-		      -e 's/\. = 0 + SIZEOF_HEADERS;/& _begin = . - SIZEOF_HEADERS;/' \
yann@1327
    26
+		      -e 's/\. = .* + SIZEOF_HEADERS;/& _begin = . - SIZEOF_HEADERS;/' \
yann@1327
    27
 		  > $@.lds
yann@1327
    28
 	$(LINK.o) -nostdlib -nostartfiles -shared -o $@			\
yann@1327
    29
 		  $(LDFLAGS-rtld) -Wl,-z,defs $(z-now-$(bind-now))	\