libiberty is not an API to gcc, it is a portability library. If GCC is exporting a timer, GCC's headers should have the interface in it.
- [PATCH 00/16] RFC: Embedding as and ld inside gcc driver and... David Malcolm
- [PATCH 05/16] gcc: driver: add g_driver singleton David Malcolm
- [PATCH 09/16] libiberty.h: Provide CTIMER_PUSH/POP David Malcolm
- Re: [PATCH 09/16] libiberty.h: Provide CTIMER_PUSH/... DJ Delorie
- [PATCH 04/16] gcc: Don't keep reinitializing RTL David Malcolm
- [PATCH 06/16] gcc: driver: add timevars for as, collect... David Malcolm
- [PATCH 03/16] gcc: Use timevars within driver David Malcolm
- [PATCH 01/16] gcc: Generalization of timevar API; add g... David Malcolm
- [PATCH 02/16] gcc: Embed the driver in-process within l... David Malcolm
- [PATCH 07/16] binutils: bfd: Implement bfd_uninit David Malcolm
- [PATCH 08/16] libiberty.h: Provide a CLEAR_VAR macro David Malcolm
