Your package fails to build with the newest upcoming autoconf-2.71, which is part of a wide Fedora change. Please see the attached copr: https://copr.fedorainfracloud.org/coprs/odubaj/autoconf-2.70/packages/. More information about testing your package when building with autoconf available here: https://fedoraproject.org/wiki/Changes/Autoconf_271#How_To_Test
This build failure is unrelated to autoconf-2.71: CC keymap.o CC sysdep.o ../../src/sysdep.c:1819:22: error: variably modified 'sigsegv_stack' at file scope 1819 | static unsigned char sigsegv_stack[SIGSTKSZ]; | ^~~~~~~~~~~~~ make[2]: *** [Makefile:402: sysdep.o] Error 1
Emacs builds fine with autoconf 2.71 after fixing that unrelated FTBFS.