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POhow to solve this[warning: ignoring file, file was built for unsupported file format]
 

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  1. POhow to solve this[warning: ignoring file, file was built for unsupported file format]
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    <p>I got some sample code which is used to do a recursive listing of all files and directories in a FAT12 disk image file from my lecturer.</p> <p>I follow the instructions carefully but get some strange error msg like this: </p> <pre><code>ld: warning: ignoring file floppy.img, file was built for unsupported file format (0xEB 0x3C 0x90 0x42 0x53 0x44 0x20 0x20 0x34 0x2E 0x34 0x00 0x02 0x01 0x01 0x00 ) which is not the architecture being linked (x86_64): floppy.img Undefined symbols for architecture x86_64: "_check_bootsector", referenced from: _main in dos_ls-LKA1e2.o "_cluster_to_addr", referenced from: _follow_dir in dos_ls-LKA1e2.o "_get_fat_entry", referenced from: _ follow_dir in dos_ls-LKA1e2.o "_mmap_file", referenced from: _main in dos_ls-LKA1e2.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) </code></pre> <p><strong>gcc ./dos_ls.c floppy.img</strong> is the command I use in terminal. dos_ls.c is the c file, floppy.img is the sample img he gave us.</p> <p>I believe something wrong with ths format of this img?<br> Could anyone explain this error and tell me how to fix it please?</p> <p>Update: <strong>For example “./dos_ls floppy.img” would list all the files and directories in the disk image file called floppy.img.</strong> this is the instruction i am given. anything wrong with what I am doing?</p> <p><strong>gcc ./dos_ls.c</strong> gives this error msg: </p> <pre><code> Undefined symbols for architecture x86_64: "_check_bootsector", referenced from: _main in dos_ls-xHY6F1.o "_cluster_to_addr", referenced from: _follow_dir in dos_ls-xHY6F1.o "_get_fat_entry", referenced from: _follow_dir in dos_ls-xHY6F1.o "_mmap_file", referenced from: _main in dos_ls-xHY6F1.o ld: symbol(s) not found for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) </code></pre> <p><strong>gcc --version</strong> </p> <pre><code>Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx- include-dir=/usr/include/c++/4.2.1 Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn) Target: x86_64-apple-darwin13.0.0 Thread model: posix </code></pre> <p>Update: <strong>gcc -o hello dos_ls.c dos.c</strong> create a new file in current directory: </p> <pre><code>Usage: dos_ls &lt;imagename&gt; logout [Process completed] </code></pre> <p>What is the correct way to execute this...??</p>
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    1. USgeasssos
    1. USgeasssos
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POhow to solve this[warning: ignoring file, file was built for unsupported file format]
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      1. VTDownMod
    1. COwhy on earth are you trying to compile a `.img` file?!
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      1. POhow to solve this[warning: ignoring file, file was built for unsupported file format]
      1. USFilipe Gonçalves
    2. COThe undefined symbols are apparently functions that are called in the dos_ls.c file but not defined in that file. Maybe your lecturer gave you a library to link with, or a couple of .h/.c files to compile along with dos_ls.c ?
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      1. POhow to solve this[warning: ignoring file, file was built for unsupported file format]
      1. USSirDarius
    3. CO@SirDarius yes, with couple of .h/.c files all in current directory and used #include" " to link with.
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      1. POhow to solve this[warning: ignoring file, file was built for unsupported file format]
      1. USgeasssos
 

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