Robert P. J. DAY says:
According to Mike Frysinger, this patch was removed from Gentoo in the
2.3.x series and didn't seem to cause any adverse effects. So toss it
from the patch directories for glibc 2.5 and up.
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"