2010/9/11 Ruben Van Boxem <[email protected]>:
>> Hmm, I don't get this failure on cygwin as host. Have you installed
>>
>> lto on msys for native compiler before proper?
>>
>> Kai
>
> I'm using TDM64 GCC 4.5.1 with lto enabled, and it works for eg building Qt
> without error. I have also built and installed libelf for TDM64 GCC (it's
> installed in the MSYS /mingw/x86_64-w64-mingw32 directory, with /mingw a
> symlink to the TDM64 root directory.
>
> I am now trying with these options:
>
>> ../../src/gcc/configure --prefix=/home/ruben/mingw64/build/mingw64
>> --with-sysroot=/home/ruben/mingw64/build/mingw64 --target=x86_64-w64-mingw32
>> --host=x86_64-w64-mingw32 --build=x86_64-w64-mingw32
>> --enable-languages=c,c++,lto --enable-stage1-languages=c,c++,lto
>> --enable-fully-dynamic-string --disable-multilib --enable-lib64
>> --disable-lib32 --enable-lto --enable-libgomp CFLAGS="-mtune=core2 -flto"
>> LFLAGS="-flto -fwhopr=3" BOOT_CFLAGS="-mtune=core2" BOOT_LFLAGS="-whopr=3"
>
> In the hope that BOOT_LFLAGS will overwrite the regular LFLAGS for the
> bootstrapping compiler.
>
> Am I correct in thinking that configure <options> && make (&&make install)
> is all I need?
> Could I perhaos have a look at your build script/commands (if it's not just
> the one from svn...).
>
> Thanks
>
> Ruben
>
>
Well, lto normally needs not to be explicit enabled. You just need to
have the libelf library installed on you host environment. I assume
that this is the issue you are seeing here, that libelf isn't present.
Kai
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