[LLVMdev] Cross compiling GCC 4.2 build errors

[S. Bharadwaj Yadavalli]

I get the following assertion failure during my attempt to build an
x86_64->ARM cross compiler.

<llvm-build>/./gcc/xgcc -B<llvm-build>/./gcc/
-B<llvm-install>/arm-none-linux-gnueabi/bin/
-B<llvm-install>/arm-none-linux-gnueabi/lib/ -isystem
<llvm-install>/arm-none-linux-gnueabi/include -isystem
<llvm-install>/arm-none-linux-gnueabi/sys-include  -O2  -O2 -g -O2  -DIN_GCC
-DCROSS_DIRECTORY_STRUCTURE   -W -Wall -Wwrite-strings -Wstrict-prototypes
-Wmissing-prototypes -Wold-style-definition  -isystem ./include  -fPIC -g
-DHAVE_GTHR_DEFAULT -DIN_LIBGCC2 -D__GCC_FLOAT_NOT_NEEDED  -I. -I.
-I<llvm-gcc-4.2-source>/gcc -I<llvm-gcc-4.2-source>/gcc/.
-I<llvm-gcc-4.2-source>/gcc/../include
-I<llvm-gcc-4.2-source>/gcc/../libcpp/include
-I<llvm-gcc-4.2-source>/gcc/../libdecnumber -I../libdecnumber
-I<llvm-install>/llvm/include -I<llvm-src/llvm/include -DL_muldc3
-fvisibility=hidden -DHIDE_EXPORTS -c
../../../../src/llvm-gcc-4.2/gcc/libgcc2.c -o libgcc/./_muldc3.o
cc1: <llvm-src>/llvm/lib/CodeGen/RegisterScavenging.cpp:273: void
llvm::RegScavenger::forward(): Assertion `(isReserved(Reg) || isUnused(Reg)
|| IsImpDef || isImplicitlyDefined(Reg) || isLiveInButUnusedBefore(Reg, MI,
MBB, TRI, MRI)) && "Re-defining a live register!"' failed.
../../../../src/llvm-gcc-4.2/gcc/libgcc2.c:1914: internal compiler error:
Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.

Can some one please tell me what the problem is?

Here is some relevant info:

LLVM and llvm-gcc-4.2 source rev 64487
$ svn info
Path: .
URL: http://llvm.org/svn/llvm-project/llvm/trunk
Repository Root: http://llvm.org/svn/llvm-project
Repository UUID: 91177308-0d34-0410-b5e6-96231b3b80d8
Revision: 64487
Node Kind: directory
Schedule: normal
Last Changed Author: djg
Last Changed Rev: 64468
Last Changed Date: 2009-02-13 12:45:12 -0500 (Fri, 13 Feb 2009)

$ svn info
Path: .
URL: http://llvm.org/svn/llvm-project/llvm-gcc-4.2/trunk
Repository Root: http://llvm.org/svn/llvm-project
Repository UUID: 91177308-0d34-0410-b5e6-96231b3b80d8
Revision: 64487
Node Kind: directory
Schedule: normal
Last Changed Author: baldrick
Last Changed Rev: 64234
Last Changed Date: 2009-02-10 15:43:26 -0500 (Tue, 10 Feb 2009)

LLVM configured and successfully built as :
<llvm-source>/configure --with-llvmgccdir=<llvm-install>/llvm-gcc-4.2
--enable-optimized --enable-jit --prefix=<llvm-install/llvm
--target=arm-unknown-linux-gnueabi

llvm-gcc-4.2 configured as :
<llvm-gcc-4.2-source>/configure   --prefix=<llvm-install/llvm-gcc-4.2
--program-prefix=llvm-x86_64-arm --enable-llvm=<llvm-install>/llvm
--disable-multilib --target=arm-none-linux-gnueabi
--with-sysroot=<sysroot-location> --enable-languages=c,c++


Thanks,

Bharadwaj
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