On 21 May 2014 14:13, Sheheryar Zahoor Qazi <sheheryar.zahoor.q...@gmail.com> wrote: >>>Building libgcc is not optional. It is required for all targets. > > So, irrespective whether i provide floating point implementation by > soft-fp, fpu-bit or ieeelib, an error free libgcc build is a MUST? > > What if I dont want to generate calls to libgcc.a but want want gcc to > generate inline code?
While this is not possible for all calls, a lot of library calls can be avoided or emitted with a custome ABI by having a suitable expander in the .md file that emits whatever you want. E.g., several of the ARC subtargets/mulitlibs emit inline code for the simpler soft-fp functions, and custom calls to optimized assembler for medium complexity operations. You should really read md.texi and look at optabs.def to get a glimpse of the code generation customization potential of GCC.
