readelf's output is much easier to read than objdump's as you can see below.
$ readelf --string-dump .comment foo
String dump of section '.comment':
[ 1] GCC: (Ubuntu 4.8.4-2ubuntu1~14.04.3) 4.8.4
[ 2c] clang version 5.0.0
[ 41] Linker: LLD 5.0.0
$ objdump -j .comment -s foo
Contents of section .comment:
0000 00474343 3a202855 62756e74 7520342e .GCC: (Ubuntu 4.
0010 382e342d 32756275 6e747531 7e31342e 8.4-2ubuntu1~14.
0020 30342e33 2920342e 382e3400 636c616e 04.3) 4.8.4.clan
0030 67207665 7273696f 6e20352e 302e3020 g version 5.0.0
0040 004c696e 6b65723a 204c4c44 20352e30 .Linker: LLD 5.0
0050 2e3000 .0.
llvm-svn: 301515
lld Documentation ================= The lld documentation is written using the Sphinx documentation generator. It is currently tested with Sphinx 1.1.3. We currently use the 'nature' theme and a Beaker inspired structure. To rebuild documents into html: [/lld/docs]> make html