similar to: [LLVMdev] build errors while cross compiling llvm-gcc for ARM

On 2010-06-04 13:41, Sanjeev C wrote: > I get following errors: > > /home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/xgcc > -B/home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/ > -B/usr/local/armv7fl-montavista-linux-gnueabi/bin/ > -B/usr/local/armv7fl-montavista-linux-gnueabi/lib/ -isystem > /usr/local/armv7fl-montavista-linux-gnueabi/include -isystem >

This is the full description of errors I am getting /home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/xgcc -B/home/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/ -B/usr/local/armv7fl-montavista-linux-gnueabi/bin/ -B/usr/local/armv7fl-montavista-linux-gnueabi/lib/ -isystem /usr/local/armv7fl-montavista-linux-gnueabi/include -isystem

Hello, Thanks for the reply. We have an product whose one part has lot of algorithms doing some graphics work. Our intention was to figure out if there can be any performance gain if we use llvm instead of native ARM. This is for ARM target. Earlier, I have built this component using llvm and tested it on x86. Performance was 4x as compared to native gcc. Then I built llvm for ARM and tested

Hello > /tmp/cczBL31y.s:409: rdhi, rdlo and rm must all be different This is binutils bug fixed ~2 years ago: http://sourceware.org/ml/binutils/2007-11/msg00046.html Make sure you're using the latest binutils for ARM (from binutils CVS) -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

Hi, Any help would b appreicated. This is one of my critical assignment. Thanks Sanjeev On Thu, Jun 17, 2010 at 7:03 PM, Sanjeev chugh <sanjuchugh at gmail.com> wrote: > Hello, > > Thanks for the reply. We have an product whose one part has lot of > algorithms doing some graphics work. Our intention was to figure out if > there can be any performance gain if we use llvm

Hello > a) 'llvm-gcc -c -flo -O2' to generate the .bc files. How llvm-gcc was configured & compiled? With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

my g++-cross was configured with following parameters: ./configure --host=i686-pc-linux-gnu --build=i686-pc-linux-gnu --target=armv7fl-montavista-linux-gnueabi --enable-cross --with-sysroot=/home/arm_v7_vfp_le/target/ --with-build-sysroot=/home/arm_v7_vfp_le/target/ --enable-shared --enable-languages=c,c++ --with-as=/home/arm_v7_vfp_le/bin/arm_v7_vfp_le-as

2009/6/12 Bob Wilson <bob.wilson at apple.com> > Thanks, this should be useful. What problem did you have with svn > revisions after 70786? /tmp/llvm-project.p28262/obj/llvm-gcc-4.2/./gcc/xgcc -B/tmp/llvm-project.p28262/obj/llvm-gcc-4.2/./gcc/ -B/tmp/llvm-73246/llvm-project/x86_64-unknown-linux-gnu/arm-none-linux-gnueabi/llvm-gcc-4.2/arm-none-linux-gnueabi/bin/

On Jun 11, 2009, at 7:18 PM, Misha Brukman wrote: > I've committed my scripts that simplify building Linux/x86 -> Linux/ > ARM crosstool. There are 2 parts to using this: > > * llvm/utils/crosstool/create-snapshots.sh > creates tarballs for LLVM and LLVM-GCC from HEAD SVN or a specific > revision of your choice > * llvm/utils/crosstool/ARM/build-install-linux.sh

> ~/Desktop/Sanjeev/LLVM/llvm-2.7/Release/lib/libLLVMgold.so --eh-frame-hdr > -melf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o Ok, this way you're generating code for x86 > /usr/lib/crti.o > /usr/local/lib/gcc/i686-pc-linux-gnu/4.2.0/crtbegin.o > -L/usr/local/lib/gcc/i686-pc-linux-gnu/4.2.0  -L/usr/local/lib -lgcc > --as-needed -lgcc_s --no-as-needed -lc -lgcc

Sorry for not explaining well. After compiling with g++-cross g++-cross -c a.c I do link using this command /gold_binutils/build/gold/ld-new -plugin ~/Desktop/Sanjeev/LLVM/llvm-2.7/Release/lib/libLLVMgold.so --eh-frame-hdr -melf_i386 -dynamic-linker /lib/ld-linux.so.2 /usr/lib/crt1.o /usr/lib/crti.o /usr/local/lib/gcc/i686-pc-linux-gnu/4.2.0/crtbegin.o

Hello, Since, I cudn't get performance gain using llvm compiler, I've tried to use gold linker instead of going through these following steps. a) 'llvm-gcc -c -flo -O2' to generate the .bc files. b) 'llvm-ld' to combine them into a single .bc. No, not a .so nor a .a. c) 'llc' to turn your combined .bc into a .s d) 'as' to turn your .s into a .o I followed

> exactly Well, in general, there is no connection between the performance on x86 and on ARM. You can try to profile your code and find what causes the speedup on x86 and figure out the slowdowns on ARM. -- With best regards, Anton Korobeynikov Faculty of Mathematics and Mechanics, Saint Petersburg State University

On Sun, Jul 3, 2011 at 11:32 PM, Karel Gardas <karel.gardas at centrum.cz> wrote: > Hello, > > I asked here for kind of reference GCC version which LLVM development > team is using for *native* testing on ARM hardware. (no cross > compilation!) last week or so. I've been curious myself how the > situation looks and so I tested LLVM 2.9 as a reference point and LLVM >

Hello, I'm using gold linker now to see if there can be any performance gain. Also using latest gcc version (4.4.4) and latest binutils. But when I'm compiling llvm-gcc, I'm getting this error. /home/jal/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/xgcc -B/home/jal/llvm-gcc-4.2-2.7.source/host-i686-pc-linux-gnu/gcc/ -B/usr/local/arm-v7a8-linux-gnueabi/bin/

Hi, I am trying to build the front end llvm-gcc 2.8 on 32-bit Ubuntu 10.04, using gcc 4.2.4. I was able to configure and build llvm-2.8 in the directory llvm-2.8-build. Here is the command I used to configure llvm-gcc build: ../llvm-gcc-4.2-2.8.source/configure --enable-checking --disable-bootstrap --disable-multilib --enable-llvm=/home/ghoang/llvm-test/llvm-2.8-build/ --enable-languages=c

Hi Journeyer First, thank you so much for your updates on your experiments. I am currently following your steps but have found myself stuck with the following error: /usr/lib/gcc/arm-linux-gnueabi/4.6/../../../../arm-linux-gnueabi/bin/ld: this linker was not configured to use sysroots clang: error: linker command failed with exit code 1 (use -v to see invocation) I used the command string you

try --disable-libmudflap when you config llvm-gcc FE:) On Mon, Jan 16, 2012 at 9:44 AM, Giang Hoang <ghoang84 at gmail.com> wrote: > Hi, > > I am trying to build the front end llvm-gcc 2.8 on 32-bit Ubuntu 10.04, > using gcc 4.2.4.  I was able to configure and build llvm-2.8 in the > directory llvm-2.8-build.  Here is the command I used to configure llvm-gcc > build: >

Thank you, I did try that and got the following error: checking for library containing strerror... configure: error: Link tests are not allowed after GCC_NO_EXECUTABLES. make[1]: *** [configure-target-libiberty] Error 1 make[1]: Leaving directory `/home/ghoang/llvm-test/llvm-gcc-2.8-build' make: *** [all] Error 2 I also tried adding --disable-libiberty but make would fail even earlier

Hello list I think I really finally found a way to crossbuild a binary for ARM using Clang/llvm. This message would be a documentation for someone who may concern for the same issue with me. - Target : TOSHIBA AC100 / Ubuntu 12.04 (https://wiki.ubuntu.com/ARM/** TEGRA/AC100 <https://wiki.ubuntu.com/ARM/TEGRA/AC100>) - Host : i386 Desktop PC / Ubuntu 12.04 - Toolchain on host : sudo