configure: WARNING: texi2dvi: program not found: building pdf version of manual will not work
configure: WARNING: ${top_srcdir}/build-aux/missing indent does not appear to be GNU indent; 'make indent' may not function properly
ar: `u' modifier ignored since `D' is the default (see `U')
ERROR: flex/2.6.4: Error in package() method, line 75
	os.unlink(os.path.join(self.package_folder, "lib", "libfl_pic.la"))
	FileNotFoundError: [Errno 2] No such file or directory: '/home/conan/w/cci_PR-3873/.conan/data/flex/2.6.4/_/_/package/6b2c44ae7d3f21c9224a346b0268f1b0f64cf6b7/lib/libfl_pic.la'