Compiler flags:                  -Wall -Wextra -Wattributes -Wimplicit-function-declaration -Wimplicit-int -Wno-declaration-after-statement -Wno-long-long -Wno-vla -Wincompatible-pointer-types -Wint-conversion -Wbad-function-cast -Wfloat-conversion -Wfloat-equal -Wformat-security -Wformat-signedness -Wimplicit-fallthrough -Wmissing-declarations -Wmissing-format-attribute -Wmissing-prototypes -Wmissing-variable-declarations -Wnested-externs -Wpointer-arith -Wredundant-decls -Wshadow -Wstrict-prototypes -Wswitch-default -Wundef -Wunreachable-code -Wunused-result -Wwrite-strings -Wno-cast-function-type -Wno-assign-enum  -Os -fstack-clash-protection -Wformat -Werror=format-security -fno-plt
extfs.c:1659:29: error: 'LIBEXECDIR' undeclared (first use in this function); did you mean 'ELIBEXEC'?
make[5]: *** [Makefile:564: extfs.lo] Error 1
make[4]: *** [Makefile:583: all-recursive] Error 1
make[3]: *** [Makefile:602: all-recursive] Error 1
make[2]: *** [Makefile:715: all-recursive] Error 1
make[1]: *** [Makefile:598: all-recursive] Error 1
make: *** [Makefile:528: all] Error 2
>>> ERROR: mc: build failed