patches/gcc/4.1.1/801-softfloat-fix.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue May 08 17:48:32 2007 +0000 (2007-05-08)
changeset 78 c3868084d81a
permissions -rw-r--r--
Huge fixes to glibc build, so that we can build at least (and at last):
- use ports addon even when installing headers,
- use optimisation (-O) when installing headers, to avoid unnecessary warnings (thanks Robert P. J. DAY for pointing this out!),
- lowest kernel version to use is only X.Y.Z, not X.Y.Z.T,
- a bit of preparations for NPTL (RSN I hope),
- fix fixing the linker scripts (changing the backup file is kind of useless and stupid);

Shut uClibc finish step: there really is nothing to do;

Add a patch for glibc-2.3.6 weak aliases handling on some archs (ARM and ALPHA at least);

Did not catch the make errors: fixed the pattern matching in scripts/functions;

Introduce a new log level, ALL:
- send components' build messages there,
- DEBUG log level is destined only for crosstool-NG debug messages,
- migrate sub-actions to use appropriate log levels;

Update the armeb-unknown-linux-gnu sample:
- it builds!
- uses gcc-4.0.4 and glibc-2.3.6,
- updated to latest config options set.
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This patch (C) 2007 Yann E. MORIN
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Licensed under GPL v2.
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First hunk of this patch solves compiling uClibc-0.9.28{,.1} :
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make[1]: Entering directory `/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc'
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  LD libuClibc-0.9.29.so
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libc/libc_so.a(difftime.os): In function `difftime':
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difftime.c:(.text+0x8): undefined reference to `__floatsidf'
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difftime.c:(.text+0x2c): undefined reference to `__subdf3'
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libc/libc_so.a(_fpmaxtostr.os): In function `_fpmaxtostr':
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_fpmaxtostr.c:(.text+0xd4): undefined reference to `__nedf2'
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_fpmaxtostr.c:(.text+0xf8): undefined reference to `__eqdf2'
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_fpmaxtostr.c:(.text+0x114): undefined reference to `__divdf3'
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_fpmaxtostr.c:(.text+0x120): undefined reference to `__ltdf2'
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_fpmaxtostr.c:(.text+0x1c4): undefined reference to `__muldf3'
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_fpmaxtostr.c:(.text+0x388): undefined reference to `__gedf2'
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_fpmaxtostr.c:(.text+0x430): undefined reference to `__adddf3'
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libc/libc_so.a(__psfs_do_numeric.os): In function `__psfs_do_numeric':
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__psfs_do_numeric.c:(.text+0x520): undefined reference to `__truncdfsf2'
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libc/libc_so.a(strtof.os): In function `strtof':
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strtof.c:(.text+0x1c): undefined reference to `__extendsfdf2'
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/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):
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In function `__fixunsdfsi':
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libgcc2.c:(.text+0x34): undefined reference to `__fixdfsi'
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make[2]: *** [lib/libc.so] Error 1
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make[1]: *** [lib/libc.so.0] Error 2
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make[1]: Leaving directory `/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc'
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make: *** [/home/ymorin/x-tools/build/armeb-unknown-linux-uclibc/gcc-4.1.1-uClibc-0.9.28.1/build-libc/lib/libc.a]
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Error 2
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The second hunk fixes building final gcc because soft-float implies using -lfloat (which we don't have).
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diff -dur gcc-4.1.1.no-softfloat-fix/gcc/config.gcc gcc-4.1.1/gcc/config.gcc
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--- gcc-4.1.1.no-softfloat-fix/gcc/config.gcc	2007-02-01 21:57:17.000000000 +0100
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+++ gcc-4.1.1/gcc/config.gcc	2007-02-01 22:11:06.000000000 +0100
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@@ -690,7 +690,7 @@
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 	    default_use_cxa_atexit=yes
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 	    ;;
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 	*)
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-	    tmake_file="$tmake_file arm/t-linux"
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+	    tmake_file="$tmake_file arm/t-linux arm/t-arm-elf"
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 	    ;;
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 	esac
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 	tm_file="$tm_file arm/aout.h arm/arm.h"
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diff -dur gcc-4.1.1.-lfloat/gcc/config/arm/linux-elf.h gcc-4.1.1/gcc/config/arm/linux-elf.h
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--- gcc-4.1.1.-lfloat/gcc/config/arm/linux-elf.h	2007-02-01 21:57:17.000000000 +0100
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+++ gcc-4.1.1/gcc/config/arm/linux-elf.h	2007-02-01 23:00:42.000000000 +0100
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@@ -63,7 +63,7 @@
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    %{shared:-lc} \
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    %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
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-#define LIBGCC_SPEC "%{msoft-float:-lfloat} %{mfloat-abi=soft*:-lfloat} -lgcc"
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+#define LIBGCC_SPEC "-lgcc"
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 #ifdef USE_UCLIBC
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 #define LINUX_TARGET_INTERPRETER "/lib/ld-uClibc.so.0"