make lkl failed

[areuu]

On ubuntu server 18.04
I just run ./build.sh
when make -C tools/lkl

/home/uuu/kernel/kbdysch/lkl-linux/tools/lkl//include/lkl/asm/syscall_defs.h: In function ‘lkl_sys_inotify_init’:
/home/uuu/kernel/kbdysch/lkl-linux/tools/lkl//include/lkl/asm/syscalls.h:288:22: error: ‘__lkl__NR_inotify_init’ undeclared (first use in this function); did you mean ‘__lkl__NR_inotify_init1’?
   return lkl_syscall(__lkl__NR##name, params);        \
                      ^
/home/uuu/kernel/kbdysch/lkl-linux/tools/lkl//include/lkl/asm/syscalls.h:325:40: note: in expansion of macro ‘LKL_SYSCALL0’
 #define LKL_SYSCALL_DEFINE0(name, ...) LKL_SYSCALL0(name)

[atrosinenko]

I have experienced the same issue previously. This most probably should be patched upstream in LKL. Unfortunately, right now I have no time.

The simplest (but the most hackish) way is to edit the tools/lkl/include/lkl/asm/syscall_defs.h file: locate three lines like those

#ifdef __lkl__NR_inotify_init
LKL_SYSCALL_DEFINE0(_inotify_init,)
#endif

... and delete them. Unfortunately, you would have to perform this frequently (this file is autogenerated).

But please note that upstream LKL falls behind the upstream Linux kernel, so you may want to merge the master branch of torvalds/linux on your own. Please note this is quite tricky and I cannot give you some definite advice (since I'm not very familiar with it). On the other hand, some bugs may persist many kernel versions. And this is definitely OK for initial experimenting.