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Re: [discuss] Re: --with-sysroot required when building 32->64 bitcrosstoolchain? (was: building a cross-compiler is hard)

Dan Kegel wrote:
Daniel Jacobowitz wrote:

It matters that it's a 32/64 bit cross environment because otherwise
I wouldn't need --with-sysroot...

You can use --with-sysroot for binutils without using it for GCC.  It's
not necessarily a good idea though.

I'm trying it throughout. It's hard to figure out how to use, though.
I had been jimmying things so there is no /usr, i.e. so all libraries are
in $PREFIX/lib, all includes in $PREFIX/include, as is customary when
building cross-compilers. But I get the feeling that --with-sysroot wants
me to do things the LSB way, with a split between /lib and /usr/lib,
so I'm giving that a shot. Needless to say, this is painful. I'm
currently stuck building crtbegin.o because for some reason
xgcc is being told to look in $PREFIX/include... gotta figure out
where I missed adding a /usr ... grumble.

Try a symlink usr -> . then?

Found where to insert the missing /usr. Now the toolchain builds, but gcc is passing crt1.o to ld without a path! This would work if ld searched SEARCH_DIR / -L directories for crt1.o, but it doesn't.

Details at

- Dan

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