The version of objdump included in GNU’s binutils is, in theory, capable of understanding executable files for a platform (OS/CPU architecture combination) different from the one you are using. However this is disabled by default and Linux distributions do not bother enabling it. The result is that, for example, trying to view a Mach-O file on Linux will result in the File format not recognized error.
Building your cross-platform version of objdump used to be easy, just use ./configure --enable-targets=all when building binutils. However since the repositories of binutils and gdb have been merged things got more complicated.
There might be an easier way to do this, but I don’t know it:
./configure --without-gdb --without-gas --without-gdbserver --without-gdbsupport --without-gold --without-gprof --without-ld --without-libiberty --with-binutils (maybe the correct version is --disabled-gdb?)--enable-targets=all option to the configure-binutils and configure-bfd targets, on the same line that contains the --target=${target_alias} optionmake -j4binutils/objdumpYou can see a list of all supported targets by running objdump -i and set the target explicitly with objdump -b BFDNAME, usually this is not necessary, objdump will determine the correct target on its own. See also Binutils Target Selection.