Bart De VOS pointed out that removing absolute paths from the libc linker scripts is plainly wrong.
It dates from dawn ages of the original crosstool code, and is not well explained. At that time, binutils might not understand the sysroot stuff, and it was necessary to remove absolute paths in that case.
/trunk/scripts/build/libc/glibc.sh | 14 2 12 0 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
1 This patch (C) 2007 Yann E. MORIN
4 First hunk of this patch solves compiling uClibc:
6 make[1]: Entering directory `/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc'
8 libc/libc_so.a(difftime.os): In function `difftime':
9 difftime.c:(.text+0x8): undefined reference to `__floatsidf'
10 difftime.c:(.text+0x2c): undefined reference to `__subdf3'
11 libc/libc_so.a(_fpmaxtostr.os): In function `_fpmaxtostr':
12 _fpmaxtostr.c:(.text+0xd4): undefined reference to `__nedf2'
13 _fpmaxtostr.c:(.text+0xf8): undefined reference to `__eqdf2'
14 _fpmaxtostr.c:(.text+0x114): undefined reference to `__divdf3'
15 _fpmaxtostr.c:(.text+0x120): undefined reference to `__ltdf2'
16 _fpmaxtostr.c:(.text+0x1c4): undefined reference to `__muldf3'
17 _fpmaxtostr.c:(.text+0x388): undefined reference to `__gedf2'
18 _fpmaxtostr.c:(.text+0x430): undefined reference to `__adddf3'
19 libc/libc_so.a(__psfs_do_numeric.os): In function `__psfs_do_numeric':
20 __psfs_do_numeric.c:(.text+0x520): undefined reference to `__truncdfsf2'
21 libc/libc_so.a(strtof.os): In function `strtof':
22 strtof.c:(.text+0x1c): undefined reference to `__extendsfdf2'
23 /home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/cc_core_prefix/lib/gcc/arm-linux-uclibc/4.1.1/libgcc.a(_fixunsdfsi.o):
24 In function `__fixunsdfsi':
25 libgcc2.c:(.text+0x34): undefined reference to `__fixdfsi'
26 make[2]: *** [lib/libc.so] Error 1
27 make[1]: *** [lib/libc.so.0] Error 2
28 make[1]: Leaving directory `/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc'
29 make: *** [/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc/lib/libc.a]
32 The second hunk fixes building final gcc because soft-float implies using -lfloat (which we don't have).
35 diff -dur gcc-4.2.0.orig/gcc/config.gcc gcc-4.2.0/gcc/config.gcc
36 --- gcc-4.2.0.orig/gcc/config.gcc 2007-07-15 11:24:18.000000000 +0200
37 +++ gcc-4.2.0/gcc/config.gcc 2007-07-15 11:26:02.000000000 +0200
39 default_use_cxa_atexit=yes
42 - tmake_file="$tmake_file arm/t-linux"
43 + tmake_file="$tmake_file arm/t-linux arm/t-arm-elf"
46 tm_file="$tm_file arm/aout.h arm/arm.h"
47 diff -dur gcc-4.2.0.orig/gcc/config/arm/linux-elf.h gcc-4.2.0/gcc/config/arm/linux-elf.h
48 --- gcc-4.2.0.orig/gcc/config/arm/linux-elf.h 2007-07-15 11:24:18.000000000 +0200
49 +++ gcc-4.2.0/gcc/config/arm/linux-elf.h 2007-07-15 11:26:02.000000000 +0200
52 %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
54 -#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
55 +#define LIBGCC_SPEC "-lgcc"
57 #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"