Georg-Johann Lay <avr@xxxxxxxx> writes: > Tryint to use LTO with a canadian cross gcc I get the following error > message: > > e:/winavr/4.6.1/bin/../lib/gcc/avr/4.6.1/../../../../avr/bin/ld.exe: > unrecognized option '-plugin' > > It's binutils 2.21 configured > > Configured with: ../../source/binutils-2.21/configure --target=avr > --prefix=/local/gnu/install/gcc-4.6-mingw32 --host=i586-mingw32 > --build=i686-linux-gnu You need to configure with --enable-plugins. But I'll add that I don't know whether plugins work on a Windows host. They may work; I just don't know. > In the ChangeLogs I found that support for libelf has been removed, so > I guess it's simply not needed any more? Correct. > Yet another question: The above run generated temorary file names like > c:\Temp\cc0oaaaa.res which is a bit annoying when comparing testsuite > .log files. Is thare a way so that different rund generate same file > name(s)? The simplest way is to use the --save-temps option. > Then I read somewhere that LTO does not work together with -g. Is that > still true for 4.6/4.7 or did I ran in some documentation-rot? I believe that some aspects of -g still do not work correctly with LTO, but basic debugging does work. I think that some type information is not correctly conveyed to the debugger, but you can still print variables, structs, etc. Ian
