Compilation Error

acute123 · 08-28-2009, 10:20 AM

Hi Everyone

I am trying to compile a program on Debian Linux.
But when i try to do so i get the following error:

gcc -Wall -g -mcmodel=medium -c util.c
util.c:1: error: code model ‘medium’ not supported in the 32 bit mode
make: *** [util.o] Error 1

I changed to a different version of GCC 4.1(initially it was 4.4)
but the error remains the same.

Kindly guide me what to do.
Your help in highly appreciated.

Regards

jstephens84 · 08-28-2009, 10:29 AM

doesn't look like it is a problem with the gcc but with the option -mcmodel. Can you change it from medium to something else?

acute123 · 08-28-2009, 10:36 AM

Hi

Thank you for your early reply.

Actually i am compiling a software and when i run the "make all" command i get this error.

Can you pls tell me how to change from "medium" to something else.

Best Regards

jstephens84 · 08-28-2009, 10:41 AM

Ok look in the directory with the MAKEFILE and using vi

press / then type in mcmodel this should search the make file for the model. Hopefully it will have some instructions. Also when you did the ./configure if you use --help it should give you some options to use. Course you would use a ./configure if there is not makefile. (I believe this is correct, man it has been so long since I have had to compile software)

knudfl · 08-28-2009, 12:50 PM

*
Any chance, that you can tell,
which application, this is about ?

acute123 · 09-02-2009, 06:44 AM

Hi Everyone Thank you for all your help but the problem has not been solved completely so let me tell you the problem in detail.

I am trying to compile a program located at:
http://www.cs.princeton.edu/~minlanyu/embed.tar.gz

To compile it i have to execute the following commands:
1. make all (to compile)
2. ./embed (to run)

When i run the first command make all i get the following error:
rm -f *.o *~ embed
gcc -Wall -g -mcmodel=medium -c util.c
util.c:1: error: code model ‘medium’ not supported in the 32 bit mode
make: *** [util.o] Error 1

So what i did was that commented the -mcmodel=medium portion on a new line. After this when i run the command make all my output is as follows:
rm -f *.o *~ embed
gcc -Wall -g -c util.c
gcc -Wall -g -c embed.c
gcc -Wall -g -o embed util.o embed.o -lm

This creates an executable file embed

So now i write ./embed but now i get the following error:
Segmentation Fault

Is this error because i am running Linux in VMWare or there is any other reason?

Pls do reply early.
Your help is highly appreciated.

Best Regards

jstephens84 · 09-02-2009, 09:40 AM

I am downloading it now. However normally you should run make && make all. I can't recall ever seeing where you would only run make all.

jstephens84 · 09-02-2009, 10:10 AM

Ok I took a look at that file. Try uncommenting out the line from earlier and running

Code:

make && make all

you don't need ./configure because there is a makefile that exists

acute123 · 09-02-2009, 12:28 PM

Hi

Thank You for your early reply.

I again tried to compile a fresh version of that software(i mean in a new folder).

Below are the steps i performed and their results:

1. First i run

make && make all

Here is the output:

rm -f *.o *~ embed
gcc -Wall -g -mcmodel=medium -c util.c
util.c:1: error: code model ‘medium’ not supported in the 32 bit mode
make: *** [util.o] Error 1

Again the error is of medium. So i commented MakeFile like this:
// -mcmodel=medium

2. Now i run the command:
make && make all

Here is the output:

rm -f *.o *~ embed
gcc -Wall -g -c util.c
gcc -Wall -g -c embed.c
gcc -Wall -g -o embed util.o embed.o -lm
rm -f *.o *~ embed
gcc -Wall -g -c util.c
gcc -Wall -g -c embed.c
gcc -Wall -g -o embed util.o embed.o -lm

To me it means that program has compiled successfully as it has now generated an executable file "embed"

3. So i run:
./embed

But i get the same error:

Segmentation fault

Please reply early what should i do now.

Best Regards

jstephens84 · 09-02-2009, 03:10 PM

Quote:

Originally Posted by acute123

Hi

Thank You for your early reply.

I again tried to compile a fresh version of that software(i mean in a new folder).

Below are the steps i performed and their results:

1. First i run

make && make all

Here is the output:

rm -f *.o *~ embed
gcc -Wall -g -mcmodel=medium -c util.c
util.c:1: error: code model ‘medium’ not supported in the 32 bit mode
make: *** [util.o] Error 1

Again the error is of medium. So i commented MakeFile like this:
// -mcmodel=medium

2. Now i run the command:
make && make all

Here is the output:

rm -f *.o *~ embed
gcc -Wall -g -c util.c
gcc -Wall -g -c embed.c
gcc -Wall -g -o embed util.o embed.o -lm
rm -f *.o *~ embed
gcc -Wall -g -c util.c
gcc -Wall -g -c embed.c
gcc -Wall -g -o embed util.o embed.o -lm

To me it means that program has compiled successfully as it has now generated an executable file "embed"

3. So i run:
./embed

But i get the same error:

Segmentation fault

Please reply early what should i do now.

Best Regards

Do you know of anyone that has compiled and ran this software successfully. A segmentation fault is usually when an application tries to access a portion of memory it is not allowed to accesses or it attempts to write to a read only portion of memory.

Here is a quick example of what I picked off of wikipedia.

Code:

int main(){
     char *s = "hello world";
     *s = 'H';
 }

here you can see that H is trying to be illegally written to the read only section.

So in short you may have to try and find some helpful information by running a stack trace. for more information look here