$ cat /etc/release
SVN-20111210

configure log:

...
checking for jar... no
checking for fastjar... no
checking for gjar... no
checking for zip... no
checking for unzip... /usr/bin/unzip
configure: error: cannot find neither zip nor jar, cannot continue
make[1]: ** [configure-target-libjava] Erro 1
make[1]: Saindo do diretório 
`/media/dados/home/fernando/tmp/paco-build-2012.01.20/gcc-build'
make: ** [bootstrap] Erro 2

After zip-3.0 installed, build completed successfully.

Please, is zip a requirement to be included in BLFS gcc page? Or: should I have 
used disable-bootstrap, instead of enable-bootstrap switch in configure?

Anyway, perhaps I am not wrong, thinking that when upgrading the page 
(gcc-4.5.1, in BLFS Version 2012-01-16) there could be more detailed 
explanation about these points?

I apologize for all this above, but I have not yet understood the difference 
between bootstrap and not or what bootstrap means or does.

Thanks in advance.

Below, you can find build instructions (almost = book). Difference is not 
building ada compiler.

[]s,
Fernando

 sed -i 's/install_to_$(INSTALL_DEST) //' libiberty/Makefile.in &&
 sed -i 's@\./fixinc\.sh@-c true@'        gcc/Makefile.in       &&

 mkdir ../gcc-build &&
 cd    ../gcc-build &&

 ../gcc-4.6.2/configure \
           --prefix=/usr \
           --libexecdir=/usr/lib \
           --with-system-zlib \
           --enable-shared \
           --enable-threads=posix \
           --enable-__cxa_atexit \
           --disable-multilib \
           --enable-bootstrap \
           --enable-clocale=gnu \
           --enable-languages=c,c++,fortran,java,objc,obj-c++ &&

 make -j4 bootstrap &&
 make -j4 &&

 make install &&
 ln -v -sf ../usr/bin/cpp /lib &&
 ln -v -sf gcc /usr/bin/cc &&

 chown -v -R root:root \
     /usr/lib/gcc/i686-pc-linux-gnu/4.6.2/include &&
 ln -v -sf `find /usr/lib/gcc -name ffitarget.h` \
     /usr/include

[]s,
Fernando
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