llvm dev - Mar 2009 - [LLVMdev] [LLVMDev] trouble building gcc-frontend from source

Hi all,

I am a new user of LLVM, and wanted to explore it in conjunction with
the compilers course I am taking in my university. To this end, I
downloaded the code for the LLVM suite and the LLVM-gcc front end from
the respective repositories. Then, I built the LLVM suite without any
hitch, but when I tried to build the llvm-gcc frontend (exactly
following the instructions of README.LLVM) , I got compilator errors.
I am using  "gcc (GCC) 4.1.3 20070929 (prerelease) (Ubuntu
4.1.2-16ubuntu2)"  on Ubuntu 7.10, Intel Core Duo. I have attached the
make file output with this mail. (I did not find any mention of this
mailing list's policy on attachments, and if it's against the rules
then I apologise).
I wished to know if the error is a result of some recent changes
taking place in the code and if using the pre-compiled binaries will
help, or  is there something wrong at my end?

Regards
Gautam
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On Fri, Mar 13, 2009 at 2:05 PM, Gautam Sewani <gautamcool88 at gmail.com>
wrote:
> Hi all,
>
> I am a new user of LLVM, and wanted to explore it in conjunction with
> the compilers course I am taking in my university. To this end, I
> downloaded the code for the LLVM suite and the LLVM-gcc front end from
> the respective repositories. Then, I built the LLVM suite without any
> hitch, but when I tried to build the llvm-gcc frontend (exactly
> following the instructions of README.LLVM) , I got compilator errors.
> I am using  "gcc (GCC) 4.1.3 20070929 (prerelease) (Ubuntu
> 4.1.2-16ubuntu2)"  on Ubuntu 7.10, Intel Core Duo. I have attached the
> make file output with this mail. (I did not find any mention of this
> mailing list's policy on attachments, and if it's against the rules
> then I apologise).
> I wished to know if the error is a result of some recent changes
> taking place in the code and if using the pre-compiled binaries will
> help, or  is there something wrong at my end?
>
> Regards
> Gautam
>
Forgot to mention - I am using revision 66876.

Hello,
> I wished to know if the error is a result of some recent changes
> taking place in the code and if using the pre-compiled binaries will
> help, or  is there something wrong at my end?
It seems, that your llvm and llvm-gcc sources are out of sync.

PS: gcc 4.1.x is know to be the source of all sorts of  
miscompilations, I don't know whether it's still true for 4.1.3, but  
definitely so fo 4.1.2

---
With best regards, Anton Korobeynikov
Faculty of Mathematics and Mechanics, Saint Petersburg State University

Hi, the versions of llvm-gcc and llvm you are using are
not synchronized.  Probably one is from subversion while
the other is not.

Ciao,

Duncan.

Hi,
> Ok, I 'synchronized' both of them, but now I am getting a different
> error. On running make, the output ends with the following error:
please don't only reply to me, please reply to the list too.
That way others can comment, and the discussion is archived.
> cc1:
/home/gautam/code/llvm/llvm/include/llvm/Transforms/Utils/InlineCost.h:44:
> llvm::InlineCost::InlineCost(int, int): Assertion `Cost == C &&
"Cost
> exceeds InlineCost precision"' failed.
> ../../trunk/gcc/libgcov.c:644: internal compiler error: Aborted
> Please submit a full bug report,
your system compiler is broken, this is a known symptom.
> I also tried using the gcc-4.2 compiler (by changing the value of the
> environment variables CC and CXX), but got the same error.
This should work.  Since it didn't, I guess you made a mistake
when trying to use gcc-4.2 and g++-4.2 and actually used the
4.1 versions instead.

Ciao,

Duncan.

On Fri, Mar 13, 2009 at 2:38 PM, Duncan Sands <baldrick at free.fr>
wrote:
> Hi, the versions of llvm-gcc and llvm you are using are
> not synchronized.  Probably one is from subversion while
> the other is not.
>
> Ciao,
>
> Duncan.
>
Ok, I 'synchronized' both of them, but now I am getting a different
error. On running make, the output ends with the following error:


/home/gautam/code/llvm/llvm-gcc-4.2/obj/./gcc/xgcc
-B/home/gautam/code/llvm/llvm-gcc-4.2/obj/./gcc/
-B/home/gautam/code/llvm/llvm-gcc-4.2/obj/../install/i686-pc-linux-gnu/bin/
-B/home/gautam/code/llvm/llvm-gcc-4.2/obj/../install/i686-pc-linux-gnu/lib/
-isystem
/home/gautam/code/llvm/llvm-gcc-4.2/obj/../install/i686-pc-linux-gnu/include
-isystem
/home/gautam/code/llvm/llvm-gcc-4.2/obj/../install/i686-pc-linux-gnu/sys-include
 -O2  -O2 -g -O2  -DIN_GCC    -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../../trunk/gcc
-I../../trunk/gcc/. -I../../trunk/gcc/../include
-I../../trunk/gcc/../libcpp/include  -I../../trunk/gcc/../libdecnumber
-I../libdecnumber -I/home/gautam/code/llvm/llvm_install/include
-I/home/gautam/code/llvm/llvm/include  -DL_gcov -c
../../trunk/gcc/libgcov.c -o libgcc/./_gcov.o
cc1: /home/gautam/code/llvm/llvm/include/llvm/Transforms/Utils/InlineCost.h:44:
llvm::InlineCost::InlineCost(int, int): Assertion `Cost == C &&
"Cost
exceeds InlineCost precision"' failed.
../../trunk/gcc/libgcov.c:644: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://developer.apple.com/bugreporter> for instructions.
make[4]: *** [libgcc/./_gcov.o] Error 1
make[4]: Leaving directory `/home/gautam/code/llvm/llvm-gcc-4.2/obj/gcc'
make[3]: *** [libgcc.a] Error 2
make[3]: Leaving directory `/home/gautam/code/llvm/llvm-gcc-4.2/obj/gcc'
make[2]: *** [all-stage1-gcc] Error 2
make[2]: Leaving directory `/home/gautam/code/llvm/llvm-gcc-4.2/obj'
make[1]: *** [stage1-bubble] Error 2
make[1]: Leaving directory `/home/gautam/code/llvm/llvm-gcc-4.2/obj'
make: *** [all] Error 2

I also tried using the gcc-4.2 compiler (by changing the value of the
environment variables CC and CXX), but got the same error.

Where am I going wrong? Any help would be greatly appreciated.

Regards
Gautam