Hi Till,

Sorry for the very late reply. 
Version 1.5.0 which has been released last week solves this problem.

Daniel


On 2/7/20 9:32 AM, Till Hofmann wrote:
> On 2/7/20 9:31 AM, Till Hofmann wrote:
>> Hi all,
>> 
>> gprolog currently fails to build on Fedora Rawhide due to a change in
>> GCC 10. With GCC 10, it is no longer allowed to have multiple
>> definitions of the same variable, which may happen if the variable is
>> declared in a header without extern. This causes errors such as this:
>> /usr/bin/ld:
>> /builddir/build/BUILD/gprolog-1.4.5/src/Linedit/liblinedit.a(terminal.o):/builddir/build/BUILD/gprolog-1.4.5/src/Linedit/linedit.h:92:
>> multiple definition of `pl_le_hook_set_line_buffering';
>> /builddir/build/BUILD/gprolog-1.4.5/src/BipsPl/libbips_pl.a(stream_c.o):/builddir/build/BUILD/gprolog-1.4.5/src/Linedit/linedit.h:92:
>> first defined here
>> 
>> GCC has an explanation and porting instructions:
>> https://gcc.gnu.org/gcc-10/porting_to.html#common 
>> <https://gcc.gnu.org/gcc-10/porting_to.html#common>
>> 
>> I can re-enable -fcommon for Fedora builds. However, the recommended way
>> to fix this is to actually fix the code.
>> 
>> Kind regards,
>> Till
>> 
> Here's the Fedora BZ ticket with more logs:
> https://bugzilla.redhat.com/show_bug.cgi?id=1799464 
> <https://bugzilla.redhat.com/show_bug.cgi?id=1799464>
> 

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