|Subject:||Re: Build failures on GCC 10 due to -fno-common default|
|Date:||Sun, 11 Jul 2021 10:51:50 +0200|
Sorry for the very late reply.
Version 1.5.0 which has been released last week solves this problem.
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 I can re-enable -fcommon for Fedora builds. However, the recommended way to fix this is to actually fix the code. Kind regards, TillHere's the Fedora BZ ticket with more logs: https://bugzilla.redhat.com/show_bug.cgi?id=1799464
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