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

Daniel Jacobowitz wrote:
On Wed, Jan 07, 2004 at 02:54:36PM -0800, Daniel Kegel wrote:

so I guess ld doesn't obey -L for that file?!

Yes.  It doesn't matter that it's a 32/64-bit cross environment, it's
still a cross environment to a hosted target.  DT_NEEDED are only
searched via -rpath-link and SEARCH_DIR.

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. - Dan

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