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Re: classpath/tools/ fatal error: not a valid Java .class file

OK, I finally found why I got this error message.
When fastjar 0.94 is installed on my system, if I try to build gcc 5.3.0, I got this error.
However, if I remove fastjar from my system, building gcc works fine.

So, I guess that when fastjar is installed on my system, the building system of gcc automatically use this external program in order to manage jar files.

Is there a way to configure the building system of gcc in order to avoid using this external fastjar version please?

On Tue, 10 May 2016 18:14:10 +0200
YuGiOhJCJ Mailing-List <> wrote:

> Well, after reinstalling the official gcc packages provided by Slackware 14.1, I am not able to reproduce the problem.
> I think I had something wrong installed on my system.
> On Mon, 2 May 2016 10:04:31 +0200
> YuGiOhJCJ Mailing-List <> wrote:
> > Hello,
> > 
> > I try to build gcc 5.3.0 on Slackware 14.1 but I got this error:
> > $ ../configure --prefix=/usr --enable-languages=c,c++,java
> > $ make
> > [...]
> > make[3]: Entering directory `/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava'
> > /bin/sh ./libtool  --tag=GCJ   --mode=compile /tmp/build/openjdk/gcc-5.3.0/build/./gcc/gcj -B/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava/ -B/tmp/build/openjdk/gcc-5.3.0/build/./gcc/ -B/usr/i686-pc-linux-gnu/bin/ -B/usr/i686-pc-linux-gnu/lib/ -isystem /usr/i686-pc-linux-gnu/include -isystem /usr/i686-pc-linux-gnu/sys-include    -ffloat-store -fomit-frame-pointer -Usun -fclasspath= -fbootclasspath=../../../libjava/classpath/lib --encoding=UTF-8 -Wno-deprecated -fbootstrap-classes -findirect-dispatch -fno-bootstrap-classes -fno-indirect-classes -fsource-filename=/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava/classpath/tools/all-classes.lst -g -O2 -MT classpath/tools/libgcj_tools_la-tools.lo -MD -MP -MF classpath/tools/.deps/libgcj_tools_la-tools.Tpo -c -o classpath/tools/libgcj_tools_la-tools.lo `test -f 'classpath/tools/' || echo '../../../libjava/'`classpath/tools/
> > libtool: compile:  /tmp/build/openjdk/gcc-5.3.0/build/./gcc/gcj -B/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava/ -B/tmp/build/openjdk/gcc-5.3.0/build/./gcc/ -B/usr/i686-pc-linux-gnu/bin/ -B/usr/i686-pc-linux-gnu/lib/ -isystem /usr/i686-pc-linux-gnu/include -isystem /usr/i686-pc-linux-gnu/sys-include -ffloat-store -fomit-frame-pointer -Usun -fclasspath= -fbootclasspath=../../../libjava/classpath/lib --encoding=UTF-8 -Wno-deprecated -fbootstrap-classes -findirect-dispatch -fno-bootstrap-classes -fno-indirect-classes -fsource-filename=/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava/classpath/tools/all-classes.lst -g -O2 -MT classpath/tools/libgcj_tools_la-tools.lo -MD -MP -MF classpath/tools/.deps/libgcj_tools_la-tools.Tpo -c classpath/tools/  -fPIC -o classpath/tools/.libs/libgcj_tools_la-tools.o
> > In file included from <built-in>:0:0:
> > classpath/tools/ fatal error: not a valid Java .class file
> > compilation terminated.
> > make[3]: *** [classpath/tools/libgcj_tools_la-tools.lo] Error 1
> > make[3]: Leaving directory `/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava'
> > make[2]: *** [all-recursive] Error 1
> > make[2]: Leaving directory `/tmp/build/openjdk/gcc-5.3.0/build/i686-pc-linux-gnu/libjava'
> > make[1]: *** [all-target-libjava] Error 2
> > make[1]: Leaving directory `/tmp/build/openjdk/gcc-5.3.0/build'
> > make: *** [all] Error 2
> > 
> > Do you know why?
> > 
> > Thank you.
> > Best regards.

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