tag 5e5863847858b961d676cb2a95791208ec03d175
tagger Sameer Agarwal <sameeragarwal@google.com> Mon Oct 05 13:30:07 2015 -0700
object 41455566ac633e55f222bce7c4d2cb4cc33d5c72

1.11.0rc4

commit 41455566ac633e55f222bce7c4d2cb4cc33d5c72
author Alex Stewart <alexs.mac@gmail.com> Mon Sep 28 22:43:42 2015 +0100
committer Alex Stewart <alexs.mac@gmail.com> Mon Oct 05 18:54:11 2015 +0100
tree b2a6e88cb99912575a5a2f0820c460a2d54b2a99
parent 89c40005bfceadb4163bd16b7464b3c2ce740daf

Remove link-time optimisation (LTO).

- On GCC 4.9+ although GCC supports LTO, it requires use of the
  non-default gcc-ar & gcc-ranlib.  Whilst we can ensure Ceres is
  compiled with these, doing so with GCC 4.9 causes multiple definition
  linker errors of static ints inside Eigen when compiling the tests
  and examples when they are not also built with LTO.
- On OS X (Xcode 6 & 7) after the latest update to gtest, if LTO
  is used when compiling the tests (& examples), two tests fail
  due to typeinfo::operator== (things are fine if only Ceres itself is
  compiled with LTO).
- This patch disables LTO for all compilers. It should be revisited when
  the performance is more stable across our supported compilers.

Change-Id: I17b52957faefbdeff0aa40846dc9b342db1b02e3