[LLVMdev] LLVM-gcc for ARM

[corina s]

Hello,

Well, I recompiled the LLVM-gcc 

.../llvm-gcc4.2-2.6.source/configure --prefix=`pwd`/../install --program-prefix=llvm- --enable-llvm=/home/LLVM/llvm-2.6/ 
--enable-languages=c  
--disable-libssp  
--with-gnu-ld=/home/LLVM/llvm-gcc4.2-2.6.source/arm-elf-ld --with-gnu-as=/home/LLVM/llvm-gcc4.2-2.6.source/arm-elf-as  --with-cpu=cortex-a8  
--target=arm-elf

Everything is OK, but when trying to compile a HelloWorld source it gives me the following error:

llvm-gcc a.c
a.c:1:19: error: stdio.h: No such file or directory
a.c: In function ‘main’:
a.c:4: warning: incompatible implicit declaration of built-in function ‘printf’

llvm-gcc -v a.c
Using built-in specs.
Target: arm-elf
Configured with: ../llvm-gcc4.2-2.6.source/configure --prefix=/home/LLVM/obj/../install --program-prefix=llvm- --enable-llvm=/home/LLVM/llvm-2.6/ 
--enable-languages=c 
--disable-libssp --with-gnu-ld=/home/LLVM/llvm-gcc4.2-2.6.source/arm-elf-ld --with-gnu-as=/home/LLVM/llvm-gcc4.2-2.6.source/arm-elf-as --with-cpu=cortex-a8 --target=arm-elf
Thread model: single
gcc version 4.2.1 (Based on Apple Inc. build 5649) (LLVM build)
 /home/LLVM/install/bin/../libexec/gcc/arm-elf/4.2.1/cc1 -quiet -v -iprefix /home/LLVM/install/bin/../lib/gcc/arm-elf/4.2.1/ -D__USES_INITFINI__ a.c -quiet -dumpbase a.c -mcpu=cortex-a8 -auxbase a -version -o /tmp/ccEs2CuD.s

ignoring nonexistent directory "/home/LLVM/install/bin/../lib/gcc/arm-elf/4..2.1/../../../../arm-elf/sys-include"
ignoring nonexistent directory "/home/LLVM/install/bin/../lib/gcc/arm-elf/4..2.1/../../../../arm-elf/include"
ignoring duplicate directory "/home/LLVM/obj/../install/lib/gcc/arm-elf/4.2..1/include"
ignoring nonexistent directory "/home/LLVM/obj/../install/lib/gcc/arm-elf/4..2.1/../../../../arm-elf/sys-include"
ignoring nonexistent directory "/home/LLVM/obj/../install/lib/gcc/arm-elf/4..2.1/../../../../arm-elf/include"
#include "..." search starts here:
#include <...> search starts here:
 /home/LLVM/install/bin/../lib/gcc/arm-elf/4.2.1/include
End of search list.
GNU C version 4.2.1 (Based on Apple Inc. build 5649) (LLVM build) (arm-elf)
        compiled by GNU C version 4.2.4 (Ubuntu 4.2.4-1ubuntu4).
GGC heuristics: --param ggc-min-expand=98 --param ggc-min-heapsize=131072
Compiler executable checksum: 2099b8949ecdc7b9705c423e43d0f9c7
a.c:1:19: error: stdio.h: No such file or directory
a.c: In function ‘main’:
a.c:4: warning: incompatible implicit declaration of built-in function ‘printf’

Why those directories doesn't exist?

Thanks for your help,
Corina.

P.S. I will recompile and run -v to see which version of assembler is called.

 
--- On Sun, 1/17/10, Rafael Espindola <espindola at google.com> wrote:

From: Rafael Espindola <espindola at google.com>
Subject: Re: [LLVMdev] LLVM-gcc for ARM
To: "corina s" <corina_fff at yahoo.com>
Cc: llvmdev at cs.uiuc.edu, anton at korobeynikov.info
Date: Sunday, January 17, 2010, 8:23 AM

> llvm-gcc a.c
> Assembler messages:
> Fatal error: Invalid -march= option: `armv7-a'
>
> Any ideas?

It is probably trying to use the wrong assembler. Run with -v and check.

>
> Thank you,
> Corina
>

Cheers,
--
Rafael Ávila de Espíndola



      
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