http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25672
Pawel Sikora <pluto at agmk dot net> changed:
What |Removed |Added
----------------------------------------------------------------------------
Target|ppc64-pld-linux |x86_64-pc-mingw32
Known to work| |
Summary|[4.3 regression] cross |[4.3/4.4?/4.5 regression]
|build's libgcc picks up |cross build's libgcc picks
|CFLAGS |up CFLAGS
Known to fail| |4.5.2
--- Comment #27 from Pawel Sikora <pluto at agmk dot net> 2010-09-26 17:21:01
UTC ---
this bug still exists on current 4.5 branch and probably on trunk.
e.g. for mingw64 cross compilation libgcc's configure fails with:
(...)
checking for suffix of object files... configure: error: in
`/home/users/pluto/rpm/BUILD/gcc-4.5.1/BUILDDIR/x86_64-pc-mingw32/libgcc':
configure: error: cannot compute suffix of object files: cannot compile
config.log contains:
(...)
configure:3020: /home/users/pluto/rpm/BUILD/gcc-4.5.1/BUILDDIR/./gcc/xgcc
-B/home/users/pluto/rpm/BUILD/gcc-4.5.1/BUILDDIR/./gcc/
-L/usr/x86_64-pc-mingw32/lib -L/usr/mingw/lib -isystem
/usr/x86_64-pc-mingw32/include -isystem /usr/mingw/include
-B/usr/x86_64-pc-mingw32/bin/ -B/usr/x86_64-pc-mingw32/lib/ -isystem
/usr/x86_64-pc-mingw32/include -isystem /usr/x86_64-pc-mingw32/sys-include
-o conftest -g -O2 -fno-strict-aliasing -fwrapv -march=i686 -mtune=pentium4
-gdwarf-3 -g2 conftest.c >&5
conftest.c:1:0: error: CPU you selected does not support x86-64 instruction set
conftest.c:1:0: error: CPU you selected does not support x86-64 instruction set
configure:3023: $? = 1
as you can see libgcc's configure uses CFLAGS (-O2 -fno-strict-aliasing -fwrapv
-march=i686 -mtune=pentium4 -gdwarf-3 -g2) passed to top-level configure script
:/
