flat assembler
> Linux > Installing FASM on a modern 64-bit Linux |
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Most lini today are running in 64-bit mode. I've done it before somehow and have a ton of fasm code...
I cannot link the object file: Code: /usr/bin/ld: i386 architecture of input file `fasm.o' is incompatible with i386:x86-64 output collect2: error: ld returned 1 exit status How is this done? Searching yields ridiculous advice about using qemu and bochs, installing a 32-bit linux in virtualbox etc. I know that 32-bit executables run on 64-bit linux, and that there is a way to link it somehow... Help![/code] |
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15 Jun 2016, 03:29 |
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Set your linker to output a 32-bit executable.
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15 Jun 2016, 03:46 |
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tried:
Quote: gcc -m32 fasm.o -o fasm |
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15 Jun 2016, 03:55 |
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You need to install the 32-bit libraries. Check with your OS documentation for how to do that. It's probably something like glibc-devel.i386
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15 Jun 2016, 04:16 |
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I've been trying. I am using Xubuntu 14.04. ia32-libs used to do it, I think, but it was phased out. libc6-i386 has been installed, also multilib support for gcc and g++ (I have 5.3).
lnterestingly, Code: gcc -m32 -L/usr/lib32/ fasm.o -o fasm /usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/5/libgcc.a when searching for -lgcc /usr/bin/ld: cannot find -lgcc /usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/5/libgcc_s.so when searching for -lgcc_s /usr/bin/ld: cannot find -lgcc_s collect2: error: ld returned 1 exit status Still searches the 64-bit libs, in spite of -L/usr/lib32/ It must be something really dumb... |
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15 Jun 2016, 04:35 |
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Perhaps using LD directly (without going through GCC) will help?
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15 Jun 2016, 04:39 |
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Another failed attempt:
Code: ld -m elf_i386 fasm.o /usr/lib32/libgcc_s.so.1 -o fasm ld: fasm.o: undefined reference to symbol 'exit@@GLIBC_2.0' //lib/i386-linux-gnu/libc.so.6: error adding symbols: DSO missing from command line . Do you know what libraries I should link against - it appears I have to manually list them (similar discussion found elsewhere here in Unix messages. |
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15 Jun 2016, 04:42 |
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Code: ld -m elf_i386 fasm.o /usr/lib32/libgcc_s.so.1 /usr/lib32/crtn.o /usr/lib32/crt1.o /usr/lib32/crti.o /usr/lib32/libc.so -L/usr/lib32 -o fasm This actually links, but the executable is wacky: Code: ./fasm bash: ./fasm: No such file or directory even though the file is there... [/quote][/code] |
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15 Jun 2016, 05:14 |
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Have you marked it as executable? I'm not sure if LD does this automatically or not.
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15 Jun 2016, 05:20 |
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It's executable:
Code: stacksmith@eli:~/src/fasm$ ls -al total 548 drwxrwxr-x 5 stacksmith stacksmith 4096 Jun 15 00:06 . drwxrwxr-x 29 stacksmith stacksmith 4096 Jun 14 19:26 .. drwxrwxr-x 3 stacksmith stacksmith 4096 Jun 9 04:57 examples -rwxrwxr-x 1 stacksmith stacksmith 109393 Jun 15 00:06 fasm -rw-rw-r-- 1 stacksmith stacksmith 134138 Jun 9 04:53 fasm.o -rw-rw-r-- 1 stacksmith stacksmith 265836 Jun 9 04:57 fasm.txt -rw-rw-r-- 1 stacksmith stacksmith 1783 Jun 9 04:57 license.txt -rw-rw-r-- 1 stacksmith stacksmith 260 Jun 9 04:57 readme.txt drwxrwxr-x 6 stacksmith stacksmith 4096 Jun 9 02:59 source drwxrwxr-x 5 stacksmith stacksmith 4096 Jun 9 04:57 tools -rw-rw-r-- 1 stacksmith stacksmith 19411 Jun 9 04:57 whatsnew.txt stacksmith@eli:~/src/fasm$ ./fasm bash: ./fasm: No such file or directory Also, Code: stacksmith@eli:~/src/fasm$ objdump fasm -x fasm: file format elf32-i386 fasm architecture: i386, flags 0x00000112: EXEC_P, HAS_SYMS, D_PAGED start address 0x08048560 I think I may be linking against wrong libraries, or in the wrong order or something like that... Any ideas? |
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15 Jun 2016, 07:09 |
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stacksmith wrote: I think I may be linking against wrong libraries, or in the wrong order or something like that... Any ideas? |
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15 Jun 2016, 08:23 |
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I've used the same system with older versions of fasm a year ago. The new distribution of fasm does not seem to have an executable (to my surprise) and the instructions suggest just linking the fasm.o with gcc.
I vaguely remember going through a similar exercise a few years back. I should've kept notes.. Not that it would've helped - the 32-bit compatibility libraries have been changed. I've used fasm for many years without issues. On the other hand, my system is not at all remarkable - a 64-bit ubuntu with up-to-date gcc. I can't believe others haven't come acrosss this. Perhaps someone could statically link fasm on Ubuntu and post a binary... As a command-line tool, it does not use strange libraries, and should run on at least debian systems. I am at a bit of a loss (will investigate deeper today). Just when I started feeling good about the state of linux and fasm (deleting expletives and disparaging thoughts...) Thanks for your help. |
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15 Jun 2016, 16:02 |
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stacksmith wrote: The new distribution of fasm does not seem to have an executable (to my surprise) and the instructions suggest just linking the fasm.o with gcc. |
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15 Jun 2016, 17:02 |
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Looks like I goofed somehow. Thanks.
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15 Jun 2016, 18:20 |
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