GCC didn't officially add -gsplit-dwarf until version 4.8
I tested with gcc 4.8 and then believed the internet when it said 4.7 had support. Someone was wrong on the internet, inconceivable!
Confirmed not supported on 4.7 via GCC release notes at
http://gcc.gnu.org/onlinedocs/gcc-4.7.0/gcc/Debugging-Options.html#Debugging-Options
Confirmed supported on 4.8 via GCC release notes at
http://gcc.gnu.org/onlinedocs/gcc-4.8.0/gcc/Debugging-Options.html#Debugging-Options
Issue reported by sigbjornf@opera.com
BUG=352046
Review URL: https://codereview.chromium.org/
203133003
git-svn-id: svn://svn.chromium.org/chrome/trunk/src@257861 0039d316-1c4b-4281-b951-d872f2087c98