[lkcd-devel] changed libutils make procedure

[Andreas H. <AHE...@de...>]

Hi,

recently I changed the lkcdutils building procedure.
I removed the gflags option and introduced options
"--cflags" and "--lflags". There you can specify
compile and linker flags, respectively. The options
are passed down the Makefiles.
To compile a debug lcrash version, you simply use:

   ./configure --cflags="-g"

I think the new options provide more flexibility and
I hope everyone can live with that.

The motivation for the change came from the question,
how to improve the linking step of lcrash against
binutils libraries with support for multiple targets.

If you build lcrash with multiple dump-target support, then
you need corresponding binutils libs (libopcodes and libbfd).
Preferably you have installed this libs and corresponding
headers in separate directories to avoid conflicts with the
original binutils stuff installed on your system.

The building steps are described in the file README.xlcrash,
here is the related part from this file:

  <--snip-->

INSTALLATION steps for lcrash with cross arch support
=====================================================

1) install binutils src.rpm
  (e.g. rpm -i binutils...src.rpm && cd /usr/src/redhat/SPECS
        && rpm -bp binutils.spec)

2) install xlcrash source tree
  (e.g. from sourceforge cvs ...)

3) change to binutils src dir:

   $>./configure --enable-64-bit-bfd \
     --enable-targets=i386-elf,s390-linux,s390x-linux,alpha-linux,ia64-elf \
     --exec-prefix=/special/binutils/dir \
     --prefix=/special/binutils/dir

4) change to bfd dir:

   $>make && make install

5) change to opcodes dir:

   $>make && make install

6) Now you should have under /special/binutils/dir a tree like:

   $>cd /special/binutils/dir; find . -type f
<--snip-->
    ./lib/libopcodes.la
    ./lib/libopcodes.a
    ./lib/libbfd.la
    ./lib/libbfd.a
    ./include/dis-asm.h
    ./include/bfd.h
    ./include/ansidecl.h
    ./include/symcat.h
    ./include/bfdlink.h
    ./info/bfd.info
<--snip-->

WARNING:
   If prefix/exec-prefix is configured as /usr then it might happen that
   after "make install" the installed binutils header files do not correspond
   to the shared binutils libs on your system.
   Reason: If multiple targets are selected for libbfd, only a static library
   is built and afterwards installed. But the original shared lib will be
   kept in your system.
   Hence it is better to specify a prefix/exec-prefix that won't conflict with
   the original binutils headers and libs.

7) change to lcrash source dir:

   $> ./configure --cflags="-I /special/binutils/dir/include" \
   --lflags="-L /special/binutils/dir/lib/" --target-arch=all
   $> make && make install

During last step lcrash is statically linked against the special binutils
libs with support for multiple targets.

  <--snip-->


Regards,

Andreas

--
Linux for eServer Development
Tel :  +49-7031-16-4640
Notes mail :  Andreas Herrmann/GERMANY/IBM@IBMDE
email :  ahe...@de...