When compiling xfig-3.2.9a under Fedora 43, I get this error:
...
depbase=`echo d_arcbox.o | sed 's|[^/]*$|.deps/&|;s|\.o$||'`;\
gcc -DHAVE_CONFIG_H -I. -I.. -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/sysprof-6 -pthread -I/usr/include/libxml2 -DWITH_GZFILEOP -DXAW_INTERNATIONALIZATION -DNDEBUG -DXFIGLIBDIR="\"/usr/local/share/xfig\"" -DOBJLIBDIR="\"/usr/local/share/xfig/Libraries\"" -DXFIGDOCDIR="\"/usr/local/share/doc/xfig\"" -g -O2 -MT d_arcbox.o -MD -MP -MF $depbase.Tpo -c -o d_arcbox.o d_arcbox.c &&\
mv -f $depbase.Tpo $depbase.Po
d_arcbox.c: In function ‘arcbox_drawing_selected’:
d_arcbox.c:48:25: error: assignment to ‘void (*)(void)’ from incompatible pointer type ‘void (*)(int, int)’ [-Wincompatible-pointer-types]
48 | canvas_leftbut_proc = init_arc_box_drawing;
| ^
d_arcbox.c:38:17: note: ‘init_arc_box_drawing’ declared here
38 | static void init_arc_box_drawing(int x, int y);
| ^~~~~~~~~~~~~~~~~~~~
d_arcbox.c: In function ‘init_arc_box_drawing’:
d_arcbox.c:62:25: error: assignment to ‘void (*)(void)’ from incompatible pointer type ‘void (*)(int, int)’ [-Wincompatible-pointer-types]
62 | canvas_locmove_proc = resizing_box;
| ^
In file included from d_arcbox.c:25:
u_elastic.h:55:17: note: ‘resizing_box’ declared here
55 | extern void resizing_box(int x, int y);
| ^~~~~~~~~~~~
d_arcbox.c:63:25: error: assignment to ‘void (*)(void)’ from incompatible pointer type ‘void (*)(int, int)’ [-Wincompatible-pointer-types]
63 | canvas_leftbut_proc = create_arc_boxobject;
| ^
d_arcbox.c:36:17: note: ‘create_arc_boxobject’ declared here
36 | static void create_arc_boxobject(int x, int y);
| ^~~~~~~~~~~~~~~~~~~~
make[2]: *** [Makefile:879: d_arcbox.o] Error 1
You may need to try the recent version from GIT.
In Debian I applied the following commits to be able to build with GCC-15:
https://sourceforge.net/p/mcj/xfig/ci/0913c4d
https://sourceforge.net/p/mcj/xfig/ci/c34a1b3
https://sourceforge.net/p/mcj/xfig/ci/530c92f
https://sourceforge.net/p/mcj/xfig/ci/06ee25c
https://sourceforge.net/p/mcj/xfig/ci/70f5cd5
https://sourceforge.net/p/mcj/xfig/ci/92a8262
https://sourceforge.net/p/mcj/xfig/ci/d7c3677
https://sourceforge.net/p/mcj/xfig/ci/e0379d7
https://sourceforge.net/p/mcj/xfig/ci/d9f210b