Thank you for your quick attention to this, Luis, that certain works and compiles successfully.
One question, again not a C programmer, but why both `extern` the "declaration" and move the "definition", if those are the correct terms? On Tue, Jul 11, 2023 at 10:05 PM Luis Felipe Strano Moraes < luis.str...@gmail.com> wrote: > That is perfectly fine, the other way of fixing it would be this way which > was apparently already committed to the git tree but no new release was > made that includes it: > > http://git.savannah.gnu.org/cgit/gnugo.git/commit/?h=ttn-maint&id=54b697abcd2ccfb2fe0f5a7454da4a14118483ca > > The reason this error was encountered was due to changes in GCC as it > evolves where it starts treating some things differently, and it has been a > long time since GNU Go 3.8 was released. > > Best regards, > > > On Tue, Jul 11, 2023 at 5:19 PM James Dempsey <james.e.demp...@gmail.com> > wrote: > >> I ran into an issue with compiling GNU Go 3.8 on Amazon Linux 2023 (gcc >> (GCC) 11.3.1 20221121 (Red Hat 11.3.1-4)). >> >> I receive the follow error when running `./configure` and `make`: >> >> gcc -g -O2 -o mkpat mkpat.o transform.o dfa.o ../utils/libutils.a -lm >>> /usr/bin/ld: >>> transform.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:861: >>> multiple definition of `meaningless_white_moves'; >>> mkpat.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:861: >>> first defined here >>> /usr/bin/ld: >>> transform.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:860: >>> multiple definition of `meaningless_black_moves'; >>> mkpat.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:860: >>> first defined here >>> /usr/bin/ld: >>> dfa.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:861: >>> multiple definition of `meaningless_white_moves'; >>> mkpat.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:861: >>> first defined here >>> /usr/bin/ld: >>> dfa.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:860: >>> multiple definition of `meaningless_black_moves'; >>> mkpat.o:/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns/../engine/liberty.h:860: >>> first defined here >>> collect2: error: ld returned 1 exit status >>> make[2]: *** [Makefile:371: mkpat] Error 1 >>> make[2]: Leaving directory >>> '/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8/patterns' >>> make[1]: *** [Makefile:232: all-recursive] Error 1 >>> make[1]: Leaving directory '/home/ec2-user/kgsGtp-3.5.23/gnugo-3.8' >>> make: *** [Makefile:168: all] Error 2 >> >> >> My solution was to move the following lines from `liberty.h` to >> `unconditional.c`: >> >> /* Unconditionally meaningless moves. */ >>> int meaningless_black_moves[BOARDMAX]; >>> int meaningless_white_moves[BOARDMAX]; >> >> >> This change allowed me to compile successfully. >> >> I am not a C programmer. Is this a reasonable change to make >> and does not functionally affect the program? Why was this error >> encountered in the first place? >> >> Thank you. >> _______________________________________________ >> gnugo-devel mailing list >> gnugo-devel@gnu.org >> https://lists.gnu.org/mailman/listinfo/gnugo-devel >> > > > -- > Luís Felipe Strano Moraes > _______________________________________________ > gnugo-devel mailing list > gnugo-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/gnugo-devel >
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