https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63784
H.J. Lu <hjl.tools at gmail dot com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |NEW Last reconfirmed| |2014-11-09 Target Milestone|--- |5.0 Ever confirmed|0 |1 --- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> --- r216964 disables bootstrap for libcc1 which exposed 2 things: 1. libcc1 isn't compiled with LTO even when GCC is configured with "--with-build-config=bootstrap-lto". It may be intentional since libcc1 is disabled for bootstrap. 2. -fPIC isn't used to created libcc1.so, which is OK, if libcc1 is compiled with LTO which remembers PIC option. libiberty is bootstrapped with LTO. When libcc1 isn't compiled with LTO, we are creating libcc1.so without -fPIC, which leads to linker failure when linking libiberty.