This morning, I stumbled upon an unexpected problem; and found myself not knowing what to do.
I had to compile the native part of a library on Linux, based on the existing Windows dlls.
Before compiling, I needed to know if the Windows dlls were compiled for 32 or 64 bits.
It is quite easy to do on Windows, with tools such as dependency walker, but on Linux!?
I knew that for native linux (.so) files, objdump would be my weapon of choice.
So I gave it a shot, and tried:
$ objdump -x my_windows.dll | head -n 15 # returns the first 15 lines of the result
And here was the result :
libxuggle-5.dll: file format pei-i386 libxuggle-5.dll architecture: i386, flags 0x00000133: HAS_RELOC, EXEC_P, HAS_SYMS, HAS_LOCALS, D_PAGED start address 0x6e741058 Characteristics 0x2306 executable line numbers stripped 32 bit words debugging information removed DLL
Pretty neat, huh?
I was really not expecting objdump to be so efficient even on Windows stuff.
Well done, Linux. Well done.