Gentoo Archives: gentoo-embedded

From: Mike Frysinger <vapier@g.o>
To: gentoo-embedded@l.g.o
Cc: Joakim Tjernlund <joakim.tjernlund@×××××××××.se>
Subject: Re: [gentoo-embedded] crossdev builds libiberty.a with host arch
Date: Thu, 10 Nov 2011 03:56:17
In Reply to: [gentoo-embedded] crossdev builds libiberty.a with host arch by Joakim Tjernlund
On Wednesday 09 November 2011 10:37:18 Joakim Tjernlund wrote:
> Tried to build oprofile > ./configure --host powerpc-softfloat-linux-gnu > LDFLAGS="-L/usr/lib/binutils/powerpc-softfloat-linux-gnu > -L/usr/local/src/FS/fsall/basicfs/usr/lib" > CPPFLAGS=-I/usr/lib/binutils/powerpc-softfloat-linux-gnu/include > > configure: error: liberty library not found > > this appears to be caused by crossdevs libiberty.a beeing built with the > hosts arch instead of powerpc: nm > /usr/i686-pc-linux-gnu/powerpc-softfloat-linux-gnu/lib/libiberty.a | grep > __i686 00000000 T __i686.get_pc_thunk.bx > 00000000 T __i686.get_pc_thunk.bx > .... > > Bug in crossdev, oprofile or user error?
user error. this is expected behavior: the libs under /usr/$CHOST/$CTARGET/lib/ are libraries that will be linked for $CHOST binaries but used to debug $CTARGET code. libiberty is a bad example as it generally doesn't have any target info in it, so let's use libbfd.a as an example instead. linking against /usr/$CHOST/$CTARGET/lib/libbfd.a will let you run code on $CHOST but load ELFs that are compiled for $CTARGET. if you want to build oprofile for $CTARGET, you need to build binutils for $CTARGET (CHOST==CTARGET). -mike


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Re: [gentoo-embedded] crossdev builds libiberty.a with host arch Joakim Tjernlund <joakim.tjernlund@×××××××××.se>