Fwd: [RFC][gomp4] Offloading patches (2/3): Add tables generation

[Bernd Schmidt]

On 05/27/2014 05:33 PM, Ilya Verbin wrote:
> 2014-05-27 15:15 GMT+04:00 Bernd Schmidt <bernds@codesourcery.com>:
>> On 05/27/2014 01:11 PM, Ilya Verbin wrote:
>>> Do I understand correctly that you recommend to build our offload gcc
>>> manually, rather than during configure/make?
>>
>> Well, configure/make it separately - build and install it first.
>>
>> If there was a way to generalize the Makefiles to allow target libraries to
>> be built for multiple targets, that would be pretty good too, but it might
>> be too much work for too little gain.
>
> Ok.
>
> And what about the mkoffload tool? Should it be built during the build
> of the host or offload compiler?
> Do you have any patches for Makefile that builds it?

It should be built for the offload compiler, since it needs 
offload-target-specific knowledge. In our t-nvptx file we currently have

mkoffload.o: $(srcdir)/config/nvptx/mkoffload.c
         $(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
           -DDEFAULT_REAL_TARGET_MACHINE=\"$(real_target_noncanonical)\" \
           -DDEFAULT_TARGET_MACHINE=\"$(target_noncanonical)\" \
           $< $(OUTPUT_OPTION)

mkoffload$(exeext): mkoffload.o collect-utils.o libcommon-target.a 
$(LIBIBERTY) $(LIBDEPS)
         $(COMPILER) -o $@ mkoffload.o collect-utils.o 
libcommon-target.a $(LIBIBERTY) $(LIBS)

and in config.gcc:
nvptx-*)
         tm_file="${tm_file} newlib-stdint.h"
         tmake_file="nvptx/t-nvptx"
         if test x$enable_as_accelerator = xyes; then
                 extra_programs="mkoffload\$(exeext)"
         fi
         ;;

That's all that's needed to build it.


Bernd