[LLVMdev] llvm-gcc4 mirror back online

Reid Spencer rspencer at reidspencer.com
Fri Jan 5 11:57:15 PST 2007


Jeff,

The config.cpp hack worked for me as a temporary solution. Devang is
working on the permanent solution. Try applying this patch to your
gcc/config.gcc file, it might
just re-enable your build.

Reid.

On Fri, 2007-01-05 at 11:20 -0800, Jeff Cohen wrote:
> No, I do not see any such warning.  This explanation appears unlikely as 
> it had no problem building every other cpp file.
> 
> There is a third alternative:  have someone fix whatever broke in the 
> last week or two.
> 
> And, no, I cannot use llvm-i386.cpp or llvm-rs6000.cpp as I am running 
> x86_64.  Nor am I going to debug the gcc build system.
> 
> Devang Patel wrote:
> >
> > On Jan 4, 2007, at 8:06 PM, Jeff Cohen wrote:
> >
> >> It doesn't build.  llvm-main.cpp doesn't get compiled for some reason:
> >>
> >> g++40 -c   -g -O2  -DIN_GCC   -W -Wall -Wwrite-strings 
> >> -Wstrict-prototypes -Wmissing-prototypes -pedantic -Wno-long-long 
> >> -Wno-variadic-macros -Wold-style-definition -fno-common   
> >> -DHAVE_CONFIG_H -DENABLE_LLVM -D__STDC_LIMIT_MACROS   -I. -I. 
> >> -I../../gcc -I../../gcc/. -I../../gcc/../include -I./../intl 
> >> -I../../gcc/../libcpp/include  -I/usr/home/jeffc/llvm/include 
> >> -I/home/jeffc/llvm/obj/include \
> >>                 ../../gcc/config/ -o llvm-main.o
> >> g++40: ../../gcc/config/: linker input file unused because linking 
> >> not done
> >>
> >> Note that llvm-main.cpp does not appear in the command line.
> >
> > I think, I know what is going on here. Do you see any 'make' warning 
> > in the your build log related to overriding .cpp rule ?
> >
> > If you see such warning then it is happening because your target you 
> > do not yet have target specific C++ file. This means 
> > $out_cxx_object_file string for build rule at #2475 (in 
> > gcc/Makefile.in) is just ".cpp.o" and it conflicts with default .cpp.o 
> > build rule in same makefile at line #889.
> >
> > Two alternatives are :
> >
> > 1) FInd a way to avoid  executing $(out_cxx_object_file) rule for your 
> > target in such situation.
> >
> > OR
> >
> > 2) Set out_cxx_file for your target in config.gcc. You may be able to 
> > use  llvm-i386.cpp or llvm-rs6000.cpp directly if your target is 
> > either x86 or powerpc.
> >
> > -
> > Devang
> >
> >
> >
> 
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