Trying to code in assembly with ubuntu, but it doesn't compile and an error keeps appearing












-1















I'm using Ubuntu 32bits to program in assembly. I used a simple code that we used in class to test it but when I do: gcc - g assembly.s -o assembly , an error appears. assembly.s is the name of the text editor with the code. I don't know what I'm doing wrong here, especially since this is what we did in our classes.



This is the error that keeps appearing:



/usr/lib/gcc/i686-linux-gnu/5/../../../i386-linux-gnu/crt1.o: In function `_start':

(.text+0x18): undefined reference to `main'

collect2: error: ld returned 1 exit status


And my code is just this,



.data

    var1: .long 125

    var2: .long 32

.text

.globl main

main:

    movl var1, %eax

    movl va2, %ebx

    ret





assembly ubuntu-16.04







share|improve this question


















  • 3





    Make sure there is no space between - and g although that would produce a different error. Also you have a typo va2 instead of var2 but again, that would result in a different error.

    – Jester
    Jan 19 at 12:10








  • 2





    Your code looks correct. Make sure this is the actual file you tried to assembly. Also make sure that you actually hit “save” in your text editor before assembly.

    – fuz
    Jan 19 at 12:39











  • Builds just fine for me with gcc -g -m32 foo.s (after fixing the va2 typo). Clearly neither the code nor your command (- g vs. -g) were copy/pasted accurately, so this isn't a Minimal, Complete, and Verifiable example of anything. With your code or your command, gcc gives different error messages. g: No such file or directory or undefined reference to 'va2'

    – Peter Cordes
    Jan 20 at 12:50
















-1















I'm using Ubuntu 32bits to program in assembly. I used a simple code that we used in class to test it but when I do: gcc - g assembly.s -o assembly , an error appears. assembly.s is the name of the text editor with the code. I don't know what I'm doing wrong here, especially since this is what we did in our classes.



This is the error that keeps appearing:



/usr/lib/gcc/i686-linux-gnu/5/../../../i386-linux-gnu/crt1.o: In function `_start':

(.text+0x18): undefined reference to `main'

collect2: error: ld returned 1 exit status


And my code is just this,



.data

    var1: .long 125

    var2: .long 32

.text

.globl main

main:

    movl var1, %eax

    movl va2, %ebx

    ret





assembly ubuntu-16.04







share|improve this question


















  • 3





    Make sure there is no space between - and g although that would produce a different error. Also you have a typo va2 instead of var2 but again, that would result in a different error.

    – Jester
    Jan 19 at 12:10








  • 2





    Your code looks correct. Make sure this is the actual file you tried to assembly. Also make sure that you actually hit “save” in your text editor before assembly.

    – fuz
    Jan 19 at 12:39











  • Builds just fine for me with gcc -g -m32 foo.s (after fixing the va2 typo). Clearly neither the code nor your command (- g vs. -g) were copy/pasted accurately, so this isn't a Minimal, Complete, and Verifiable example of anything. With your code or your command, gcc gives different error messages. g: No such file or directory or undefined reference to 'va2'

    – Peter Cordes
    Jan 20 at 12:50














-1












-1








-1








I'm using Ubuntu 32bits to program in assembly. I used a simple code that we used in class to test it but when I do: gcc - g assembly.s -o assembly , an error appears. assembly.s is the name of the text editor with the code. I don't know what I'm doing wrong here, especially since this is what we did in our classes.



This is the error that keeps appearing:



/usr/lib/gcc/i686-linux-gnu/5/../../../i386-linux-gnu/crt1.o: In function `_start':

(.text+0x18): undefined reference to `main'

collect2: error: ld returned 1 exit status


And my code is just this,



.data

    var1: .long 125

    var2: .long 32

.text

.globl main

main:

    movl var1, %eax

    movl va2, %ebx

    ret





assembly ubuntu-16.04







share|improve this question














I'm using Ubuntu 32bits to program in assembly. I used a simple code that we used in class to test it but when I do: gcc - g assembly.s -o assembly , an error appears. assembly.s is the name of the text editor with the code. I don't know what I'm doing wrong here, especially since this is what we did in our classes.



This is the error that keeps appearing:



/usr/lib/gcc/i686-linux-gnu/5/../../../i386-linux-gnu/crt1.o: In function `_start':

(.text+0x18): undefined reference to `main'

collect2: error: ld returned 1 exit status


And my code is just this,



.data

    var1: .long 125

    var2: .long 32

.text

.globl main

main:

    movl var1, %eax

    movl va2, %ebx

    ret





assembly ubuntu-16.04




assembly ubuntu-16.04






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Jan 19 at 12:05









JinL042JinL042

93




93








  • 3





    Make sure there is no space between - and g although that would produce a different error. Also you have a typo va2 instead of var2 but again, that would result in a different error.

    – Jester
    Jan 19 at 12:10








  • 2





    Your code looks correct. Make sure this is the actual file you tried to assembly. Also make sure that you actually hit “save” in your text editor before assembly.

    – fuz
    Jan 19 at 12:39











  • Builds just fine for me with gcc -g -m32 foo.s (after fixing the va2 typo). Clearly neither the code nor your command (- g vs. -g) were copy/pasted accurately, so this isn't a Minimal, Complete, and Verifiable example of anything. With your code or your command, gcc gives different error messages. g: No such file or directory or undefined reference to 'va2'

    – Peter Cordes
    Jan 20 at 12:50














  • 3





    Make sure there is no space between - and g although that would produce a different error. Also you have a typo va2 instead of var2 but again, that would result in a different error.

    – Jester
    Jan 19 at 12:10








  • 2





    Your code looks correct. Make sure this is the actual file you tried to assembly. Also make sure that you actually hit “save” in your text editor before assembly.

    – fuz
    Jan 19 at 12:39











  • Builds just fine for me with gcc -g -m32 foo.s (after fixing the va2 typo). Clearly neither the code nor your command (- g vs. -g) were copy/pasted accurately, so this isn't a Minimal, Complete, and Verifiable example of anything. With your code or your command, gcc gives different error messages. g: No such file or directory or undefined reference to 'va2'

    – Peter Cordes
    Jan 20 at 12:50








3




3





Make sure there is no space between - and g although that would produce a different error. Also you have a typo va2 instead of var2 but again, that would result in a different error.

– Jester
Jan 19 at 12:10







Make sure there is no space between - and g although that would produce a different error. Also you have a typo va2 instead of var2 but again, that would result in a different error.

– Jester
Jan 19 at 12:10






2




2





Your code looks correct. Make sure this is the actual file you tried to assembly. Also make sure that you actually hit “save” in your text editor before assembly.

– fuz
Jan 19 at 12:39





Your code looks correct. Make sure this is the actual file you tried to assembly. Also make sure that you actually hit “save” in your text editor before assembly.

– fuz
Jan 19 at 12:39













Builds just fine for me with gcc -g -m32 foo.s (after fixing the va2 typo). Clearly neither the code nor your command (- g vs. -g) were copy/pasted accurately, so this isn't a Minimal, Complete, and Verifiable example of anything. With your code or your command, gcc gives different error messages. g: No such file or directory or undefined reference to 'va2'

– Peter Cordes
Jan 20 at 12:50





Builds just fine for me with gcc -g -m32 foo.s (after fixing the va2 typo). Clearly neither the code nor your command (- g vs. -g) were copy/pasted accurately, so this isn't a Minimal, Complete, and Verifiable example of anything. With your code or your command, gcc gives different error messages. g: No such file or directory or undefined reference to 'va2'

– Peter Cordes
Jan 20 at 12:50












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