Build of 5.7 looks in obsolete directory

Building 5.7 returns:
Quote:

make[4]: *** No rule to make target '/usr/lib64/gcc/x86_64-slackware-linux/9.2.0/include/stddef.h', needed by '/usr/src/linux-5.6.15/tools/objtool/fixdep.o'. Stop. make[3]: *** [Makefile:43: /usr/src/linux-5.6.15/tools/objtool/fixdep-in.o] Error 2 make[2]: *** [/usr/src/linux-5.6.15/tools/build/Makefile.include:5: fixdep] Error 2 make[1]: *** [Makefile:68: objtool] Error 2 make: *** [Makefile:1832: tools/objtool] Error 2

I'm on /usr/lib64/gcc/x86_64-slackware-linux/9.3.0.

Linking 9.3.0 to 9.2.0 seems to make it work.