Error: Symbol’s value as variable is void: add-function

[Jean Louis]

Cannot compile from master:

make -C ../admin/grammars all EMACS="../../src/emacs"
make[3]: Entering directory 
'/home/data1/protected/Programming/Software/emacs/admin/grammars'
make[3]: Nothing to be done for 'all'.
make[3]: Leaving directory 
'/home/data1/protected/Programming/Software/emacs/admin/grammars'
make[3]: Entering directory 
'/home/data1/protected/Programming/Software/emacs/lisp'
  ELC      org/org-clock.elc

In toplevel form:
org/org-clock.el:32:1: Error: Symbol’s value as variable is void: add-function
make[3]: *** [Makefile:301: org/org-clock.elc] Error 1
make[3]: Leaving directory 
'/home/data1/protected/Programming/Software/emacs/lisp'
make[2]: *** [Makefile:331: compile-main] Error 2
make[2]: Leaving directory 
'/home/data1/protected/Programming/Software/emacs/lisp'
make[1]: *** [Makefile:414: lisp] Error 2
make[1]: Leaving directory '/home/data1/protected/Programming/Software/emacs'
make: *** [GNUmakefile:113: bootstrap] Error 2