gcc returning tons of errors in a tiny hello world program

3
votes

I'm sort of stumped. This is the error I'm getting from gcc

gcc -lm -g -o bin/tomashell obj/tomashell.o
obj/tomashell.o: In function `_start':
(.text+0x0): multiple definition of `_start'
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 0 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 1 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 2 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 3 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 4 has invalid symbol index 12
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 5 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 6 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 7 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 8 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 9 has invalid symbol index 2
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 10 has invalid symbol index 13
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 11 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 12 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 13 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 14 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 15 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 16 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 17 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 18 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 19 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 20 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 21 has invalid symbol index 14
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_info): relocation 22 has invalid symbol index 22
/usr/bin/ld: /usr/lib/debug/usr/lib/crt1.o(.debug_line): relocation 0 has invalid symbol index 2
/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:/build/buildd-eglibc_2.11.2-10-i386-GapcyD/eglibc-2.11.2/csu/../sysdeps/i386/elf/start.S:119: first defined here
obj/tomashell.o:(.rodata+0x0): multiple definition of `_fp_hw'
/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.rodata+0x0): first defined here
obj/tomashell.o: In function `_fini':
(.fini+0x0): multiple definition of `_fini'
/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crti.o:(.fini+0x0): first defined here
obj/tomashell.o:(.rodata+0x4): multiple definition of `_IO_stdin_used'
/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.rodata.cst4+0x0): first defined here
obj/tomashell.o: In function `__data_start':
(.data+0x0): multiple definition of `__data_start'
/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crt1.o:(.data+0x0): first defined here
obj/tomashell.o: In function `__data_start':
(.data+0x4): multiple definition of `__dso_handle'
/usr/lib/gcc/i486-linux-gnu/4.4.5/crtbegin.o:(.data+0x0): first defined here
obj/tomashell.o: In function `_init':
(.init+0x0): multiple definition of `_init'
/usr/lib/gcc/i486-linux-gnu/4.4.5/../../../../lib/crti.o:(.init+0x0): first defined here
/usr/lib/gcc/i486-linux-gnu/4.4.5/crtend.o:(.dtors+0x0): multiple definition of `__DTOR_END__'
obj/tomashell.o:(.dtors+0x4): first defined here
collect2: ld returned 1 exit status
make: *** [bin/tomashell] Error 1

And this is my entire code file:

#include <stdlib.h>
#include <stdio.h>

int main()
{
    printf("Hello, world!");
}

I don't have the slightest clue why this is not compiling. I'm compiling all my other C applications just fine.

1
cgcc
What does your compiler invocation look like? It seems like your object file might have some stuff in it that you don't want. The fact that it appears to have _start in it, seems like you might have compiled it into an executable rather than just a simple object file like the filename extension seems to indicate. – Carl Norum
Show us the command that created obj/tomashell.o , you have likely forgotten the -c flag when compiling that source file. – nos
Right on, happy to have helped. – Carl Norum

1 Answers

4
votes

obj/tomashell.o is not an object file but an executable file. You probably forgot to use -c when compiling it, so (by default) gcc output an executable instead of an object file.