On Tuesday 2023-10-17 19:50, Lucas De Marchi wrote: >> +AC_ARG_WITH([module_directory], >> + AS_HELP_STRING([--with-module-directory=DIR], [directory in which to >> look for kernel modules - typically '/lib/modules' or >> '${prefix}/lib/modules']), >> + [], [with_module_directory=/lib/modules]) >> +AC_SUBST([module_directory], [$with_module_directory]) > > we will probably have "fun" results if we accept a relative path here. $ ./configure --prefix=/usr --bindir=../bin configure: error: expected an absolute directory name for --bindir: ../bin While such check does not exist for --with-module-directory, everyone has likely been well-trained not to use relative paths. Even if, say, cmake/meson *could* do it, it just would have never occurred to me to actually *utilize* it, because it is just too ambiguous and potentially dangerous. Just think of all the fun you could have with LD_LIBRARY_PATH=".."