[Clfs-support] clfs_git:

[William Harrington]

On Jun 3, 2013, at 10:41 AM, Charlie Brown wrote:

> I'm having trouble compiling gcc in Chapter 6. Constructing a  
> Temporary System.
> ----------------------------------------
> BOOK： GIT-20130602-x86_64-Multilib
> host: debian 7, x86_64
> target: x86_64
> $CLFS_HOST=x86_64-cross-linux-gnu $CLFS_TARGET=x86_64-unknown-linux- 
> gnu $BUILD32=-m32 $BUILD64=-m64
>
> Thanks in advance.
> I have to apologize that I didn't follow the version of gcc in the  
> book(4.6.3), but jumped to 4.8.1. I know things got greatly changed  
> with 4.8, and that's why I want to try it out:). Everything went  
> (relatively) smooth when building /cross-tools, but got totally  
> stuck at gcc for /tools.
> Here's what I did:
> ------------------
> for file in \
>  $(find gcc/config -name linux64.h -o -name linux.h -o -name sysv4.h)
> do
>  cp -uv $file{,.orig}
>  sed -e 's@/lib\(64\)\?\(32\)\?/ld@/tools&@g' \
>      -e 's@/usr@/tools at g' $file.orig > $file
>  cat >> $file << EOF
> #undef STANDARD_STARTFILE_PREFIX_1
> #undef STANDARD_STARTFILE_PREFIX_2
> #define STANDARD_STARTFILE_PREFIX_1 "/tools/lib/"
> #define STANDARD_STARTFILE_PREFIX_2 ""
> EOF
>  touch $file.orig
> done &&
> cp -uv gcc/Makefile.in{,.orig} &&  # ****************Borrowed from  
> LFS-7.3. I think it's cleaner than the  
> patch********************************
> sed -e "s@\(^NATIVE_SYSTEM_HEADER_DIR =\).*@\1 /tools/include at g" gcc/ 
> Makefile.in.orig > gcc/Makefile.in &&
> mkdir -v ../gcc-build &&
> cd ../gcc-build &&
> CC="${CC} ${BUILD64}" CXX="${CXX} ${BUILD64}" \
>   ../gcc-4.8.1/configure --prefix=/tools \
>   --libdir=/tools/lib64 --with-native-system-header-dir=/tools/ 
> include \           # Just in case
>   --build=${CLFS_HOST} --host=${CLFS_TARGET} --target=${CLFS_TARGET} \
>   --with-local-prefix=/tools  --enable-long-long \
>   --enable-c99 --enable-shared --enable-threads=posix \
>   --enable-__cxa_atexit --disable-nls --enable-languages=c,c++ \
>   --disable-libstdcxx-pch --enable-cloog-backend=isl &&
> cp -uv Makefile{,.orig} &&
> sed "/^HOST_\(GMP\|PPL\|CLOOG\)\(LIBS\|INC\)/s:-[IL]/\(lib\|include 
> \)::" \
>     Makefile.orig > Makefile &&
> make -j4 AS_FOR_TARGET="${AS}" LD_FOR_TARGET="${LD}" &&   #  
> *********** The same with the clfs book **********
> make install
> ------------------------------
> And make failed:
> In file included from ../../gcc-4.8.1/gcc/errors.c:29:0:
> ../../gcc-4.8.1/gcc/system.h:444:23: error: declaration of C  
> function 'void* sbrk(int)' conflicts with
>  extern void *sbrk (int);
>                        ^
> In file included from ../../gcc-4.8.1/gcc/genmddeps.c:19:0:
> ../../gcc-4.8.1/gcc/system.h:444:23: error: declaration of C  
> function 'void* sbrk(int)' conflicts with
>  extern void *sbrk (int);
>                        ^
> In file included from ../../gcc-4.8.1/gcc/system.h:254:0,
>                  from ../../gcc-4.8.1/gcc/errors.c:29:
> /usr/include/unistd.h:1065:14: error: previous declaration 'void*  
> sbrk(intptr_t)' here
>  extern void *sbrk (intptr_t __delta) __THROW;
>               ^
> In file included from ../../gcc-4.8.1/gcc/system.h:254:0,
>                  from ../../gcc-4.8.1/gcc/genmddeps.c:19:
> /usr/include/unistd.h:1065:14: error: previous declaration 'void*  
> sbrk(intptr_t)' here
>  extern void *sbrk (intptr_t __delta) __THROW;
>               ^
> .............................
> //Generally a lot of conflicts between the host system headers and / 
> tools/include/*.h
> #####################################
> make[2]: *** [build/errors.o] Error 1
>
> That's very interesting. Actually, x86_64-unknown-linux-gnu-g++ -v - 
> c dummy.c gives this:
> #include "..." search starts here:
> #include <...> search starts here:
>  /mnt/clfs/cross-tools/bin/../lib/gcc/x86_64-unknown-linux-gnu/ 
> 4.8.1/../../../../x86_64-unknown-linux-gnu/include/c++/4.8.1
>  /mnt/clfs/cross-tools/bin/../lib/gcc/x86_64-unknown-linux-gnu/ 
> 4.8.1/../../../../x86_64-unknown-linux-gnu/include/c++/4.8.1/x86_64- 
> unknown-linux-gnu
>  /mnt/clfs/cross-tools/bin/../lib/gcc/x86_64-unknown-linux-gnu/ 
> 4.8.1/../../../../x86_64-unknown-linux-gnu/include/c++/4.8.1/backward
>  /mnt/clfs/cross-tools/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.8.1/ 
> include
>  /mnt/clfs/cross-tools/bin/../lib/gcc/x86_64-unknown-linux-gnu/4.8.1/ 
> include-fixed
>  /mnt/clfs/cross-tools/bin/../lib/gcc/x86_64-unknown-linux-gnu/ 
> 4.8.1/../../../../x86_64-unknown-linux-gnu/include
>  /mnt/clfs/tools/include
> I think that means my cross-compiler works fine.
>
> And I found this line among other make output, right before the error:
> g++ -c   -g -O2 -DIN_GCC ...... // And stuff
> The script is actually calling the host systems g++!
> I also found make calls:
> gcc -c -DHAVE_CONFIG_H ........
> which works well.
> I'm really frustrated. Can some one help me?  Thanks!
>
> Sincerely,
> Charlie
> _______________________________________________
> Clfs-support mailing list
> Clfs-support at lists.cross-lfs.org
> http://lists.cross-lfs.org/listinfo.cgi/clfs-support-cross-lfs.org

Upgrade to gcc 4.8.1 is a work in progress with a push possibly made  
today once I test the multilib build with ppc64 multilib. view the  
current rendered book here: https://www.berzerkula.org/~kb0iic/CLFS-GIT/html/index.html 
   Compare with what you did.  You'll notice what you did to what we  
have removed and added.
Also, you can view the clfs-support and clfs-dev mailing list archives  
and see discussions about GCC update.

Sincerely,

William Harrington
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