Question

1

How to get requested librairies of gridwars?

rated 0 times [ 1] [ 0] / answers: 1 / hits: 1302 / 2 Years ago, sun, february 13, 2022, 8:47:56

I would like to get a list of libraries requested by Gridwars executable.

I one year ago used ldd but

moi@myComputer:/opt/gridwars/gridwars_lin$ ldd gridwars 

    not a dynamic executable

After browsing the Internet, I found

moi@myComputer:/opt/gridwars/gridwars_lin$ readelf -d gridwars 



Dynamic section at offset 0x70014 contains 27 entries:

  Tag        Type                         Name/Value

 0x00000001 (NEEDED)                     Shared library: [libX11.so.6]

 0x00000001 (NEEDED)                     Shared library: [libGL.so.1]

 0x00000001 (NEEDED)                     Shared library: [libGLU.so.1]

 0x00000001 (NEEDED)                     Shared library: [libXxf86vm.so.1]

 0x00000001 (NEEDED)                     Shared library: [libstdc++.so.5]

 0x00000001 (NEEDED)                     Shared library: [libm.so.6]

 0x00000001 (NEEDED)                     Shared library: [libpthread.so.0]

 0x00000001 (NEEDED)                     Shared library: [libc.so.6]

 0x0000000c (INIT)                       0x804a284

 0x0000000d (FINI)                       0x80b29bd

 0x00000004 (HASH)                       0x8048168

 0x00000005 (STRTAB)                     0x8049268

 0x00000006 (SYMTAB)                     0x8048678

 0x0000000a (STRSZ)                      2091 (bytes)

 0x0000000b (SYMENT)                     16 (bytes)

 0x00000015 (DEBUG)                      0x0

 0x00000003 (PLTGOT)                     0x80b811c

 0x00000002 (PLTRELSZ)                   1408 (bytes)

 0x00000014 (PLTREL)                     REL

 0x00000017 (JMPREL)                     0x8049d04

 0x00000011 (REL)                        0x8049cd4

 0x00000012 (RELSZ)                      48 (bytes)

 0x00000013 (RELENT)                     8 (bytes)

 0x6ffffffe (VERNEED)                    0x8049c14

 0x6fffffff (VERNEEDNUM)                 4

 0x6ffffff0 (VERSYM)                     0x8049a94

 0x00000000 (NULL)                       0x0

Right I have a list of the requested shared objects. But this still cause me some trouble : I cannot understand two things...

As proposed in comment, we may want to run file utility on the executable.

moi@mycomputer:/opt/gridwars/gridwars_lin$ file gridwars 

gridwars: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.2.0, stripped

How can I check if one ".so" file/shared object is available?

Why the hell the gridwars executable is not an executable? I remember the thing to be a executable and even having found a magic command in three letters that list requested shared objects and if there were available.

Thanks for any help.

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ainbby

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answered 2 Years ago brailloni · Accepted Answer

After installing the following package,

sudo apt-get install libc6:i386

sudo apt-get install libxxf86vm1:i386

sudo apt-get install libglu1-mesa:i386

sudo apt-get install libstdc++5:i386

You get

moi@somewhere:/opt/gridwars/gridwars_lin$ ldd gridwars 

    linux-gate.so.1 =>  (0xf77b2000)

    libX11.so.6 => /usr/lib/i386-linux-gnu/libX11.so.6 (0xf765d000)

    libGL.so.1 => /usr/lib/i386-linux-gnu/mesa/libGL.so.1 (0xf7604000)

    libGLU.so.1 => /usr/lib/i386-linux-gnu/libGLU.so.1 (0xf757c000)

    libXxf86vm.so.1 => /usr/lib/i386-linux-gnu/libXxf86vm.so.1 (0xf7576000)

    libstdc++.so.5 => /usr/lib/i386-linux-gnu/libstdc++.so.5 (0xf74bc000)

    libm.so.6 => /lib/i386-linux-gnu/libm.so.6 (0xf7479000)

    libpthread.so.0 => /lib/i386-linux-gnu/libpthread.so.0 (0xf745e000)

    libc.so.6 => /lib/i386-linux-gnu/libc.so.6 (0xf72a9000)

    libxcb.so.1 => /usr/lib/i386-linux-gnu/libxcb.so.1 (0xf7287000)

    libdl.so.2 => /lib/i386-linux-gnu/libdl.so.2 (0xf7282000)

    libglapi.so.0 => /usr/lib/i386-linux-gnu/libglapi.so.0 (0xf726b000)

    libXext.so.6 => /usr/lib/i386-linux-gnu/libXext.so.6 (0xf7259000)

    libXdamage.so.1 => /usr/lib/i386-linux-gnu/libXdamage.so.1 (0xf7254000)

    libXfixes.so.3 => /usr/lib/i386-linux-gnu/libXfixes.so.3 (0xf724d000)

    libX11-xcb.so.1 => /usr/lib/i386-linux-gnu/libX11-xcb.so.1 (0xf724a000)

    libxcb-glx.so.0 => /usr/lib/i386-linux-gnu/libxcb-glx.so.0 (0xf7232000)

    libxcb-dri2.so.0 => /usr/lib/i386-linux-gnu/libxcb-dri2.so.0 (0xf722d000)

    libdrm.so.2 => /usr/lib/i386-linux-gnu/libdrm.so.2 (0xf721f000)

    libstdc++.so.6 => /usr/lib/i386-linux-gnu/libstdc++.so.6 (0xf7136000)

    libgcc_s.so.1 => /lib/i386-linux-gnu/libgcc_s.so.1 (0xf7119000)

    /lib/ld-linux.so.2 (0xf77b3000)

    libXau.so.6 => /usr/lib/i386-linux-gnu/libXau.so.6 (0xf7115000)

    libXdmcp.so.6 => /usr/lib/i386-linux-gnu/libXdmcp.so.6 (0xf710e000)

And the game works.