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antonlacon
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PostPosted: Sun Mar 24, 2013 10:50 am    Post subject: Raspberry Pi and Crossdev GCC 4.7.2 Reply with quote

I'm building gcc-4.7.2 in a crossdev environment for a Raspberry Pi. I've noticed that part of the package's lib files are installed into usr/lib/gcc/armv6j-hardfloat-linux/4.7.1 instead of 4.7.2

Excerpt of the install portion:
Code:
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.2/libitm.a
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.2/libstdc++.so.6.0.17
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.2/libstdc++.a
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.2/libgfortran.a
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/libgcc_eh.a
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/libgcc.a
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/libgcov.a
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/crtbegin.o
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/crtbeginS.o
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/crtbeginT.o
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/crtend.o
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/crtendS.o
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/include/
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/include/unwind.h
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.2/
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.2/armv6j-hardfloat-linux-gnueabi-c++
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.2/armv6j-hardfloat-linux-gnueabi-gcc-ar
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.2/armv6j-hardfloat-linux-gnueabi-gcc-nm
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.2/armv6j-hardfloat-linux-gnueabi-gcc-ranlib
>>> /usr/armv6j-hardfloat-linux-gnueabi/usr/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.2/c++ -> armv6j-hardfloat-linux-gnueabi-c++


Needless to say, the Pi is upset at not finding those libs installed into 4.7.1.

Looking at the cross-compiler, the x86-64 -> arm toolchain is building gcc 4.7.1 even though 4.7.2 is specified:

Code:
crossdev -S --g 4.7.2 -t armv6j-hardfloat-linux-gnueabi
-------------------------------------------------------------------------------------------------------------------------------------
 * crossdev version:      20120721
 * Host Portage ARCH:     amd64
 * Target Portage ARCH:   arm
 * Target System:         armv6j-hardfloat-linux-gnueabi
 * Stage:                 4 (C/C++ compiler)
 * ABIs:                  default

 * binutils:              binutils-[stable]
 * gcc:                   gcc-4.7.2
 * headers:               linux-headers-[stable]
 * libc:                  glibc-[stable]

 * CROSSDEV_OVERLAY:      /usr/local/portage
 * PORT_LOGDIR:           /var/log/portage
 * PORTAGE_CONFIGROOT:   
 * Portage flags:         


x86-64 -> arm gcc:
Code:
armv6j-hardfloat-linux-gnueabi-gcc -v
Using built-in specs.
COLLECT_GCC=/usr/x86_64-pc-linux-gnu/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.1/armv6j-hardfloat-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/usr/libexec/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/lto-wrapper
Target: armv6j-hardfloat-linux-gnueabi
Configured with: /var/tmp/portage/cross-armv6j-hardfloat-linux-gnueabi/gcc-4.7.1/work/gcc-4.7.1/configure --prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/armv6j-hardfloat-linux-gnueabi/gcc-bin/4.7.1 --includedir=/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/include --datadir=/usr/share/gcc-data/armv6j-hardfloat-linux-gnueabi/4.7.1 --mandir=/usr/share/gcc-data/armv6j-hardfloat-linux-gnueabi/4.7.1/man --infodir=/usr/share/gcc-data/armv6j-hardfloat-linux-gnueabi/4.7.1/info --with-gxx-include-dir=/usr/lib/gcc/armv6j-hardfloat-linux-gnueabi/4.7.1/include/g++-v4 --host=x86_64-pc-linux-gnu --target=armv6j-hardfloat-linux-gnueabi --build=x86_64-pc-linux-gnu --disable-altivec --disable-fixed-point --without-ppl --without-cloog --enable-lto --with-float=hard --enable-nls --without-included-gettext --with-system-zlib --enable-obsolete --disable-werror --enable-secureplt --disable-multilib --disable-libmudflap --disable-libssp --enable-libgomp --with-python-dir=/share/gcc-data/armv6j-hardfloat-linux-gnueabi/4.7.1/python --enable-poison-system-directories --enable-checking=release --disable-libgcj --enable-libstdcxx-time --with-arch=armv6j --with-float=hard --with-fpu=vfp --enable-languages=c,c++,fortran --with-sysroot=/usr/armv6j-hardfloat-linux-gnueabi --disable-bootstrap --enable-__cxa_atexit --enable-clocale=gnu --with-bugurl=http://bugs.gentoo.org/ --with-pkgversion='Gentoo 4.7.1 p1.5, pie-0.5.3'
Thread model: posix
gcc version 4.7.1 (Gentoo 4.7.1 p1.5, pie-0.5.3)


Am I missing something? Did I find a bug? Would the bug be in gcc or crossdev?
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antonlacon
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PostPosted: Sun Mar 24, 2013 11:04 am    Post subject: Reply with quote

To answer part of this, crossdev needed the revision specified when setting up the cross-compiler, ie: --g 4.7.2-r1, in order to grab 4.7.2.
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antonlacon
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PostPosted: Sun Mar 24, 2013 11:23 am    Post subject: Reply with quote

Resolving the above cross-compile --g issue solved the rest of my issues. The Pi is happily compiling again.

Leaving this thread in case this bites someone else.
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