[bpt/emacs.git] / admin / notes / cpp

ttn 2003-04-09

we use a C preprocesor not only in the normal compilation of .c files
into object files, but also for creating src/Makefile.
(delimited by comment "start of cpp stuff").  some cpp implementations
insert whitespace in between tokens.

during makefile creation, the preprocessor symbol NOT_C_CODE is defined.
this should not be defined for normal .c file compilation.

there has been discussion on eliminating this use of cpp and relying
solely on autoconf processing.  rms says to leave it be.

;;; arch-tag: d654291e-9fc8-41b7-ab0c-d3cde842a8e0
Commit	Line	Data
564b85ec TTN	1	ttn 2003-04-09
	2
	3	we use a C preprocesor not only in the normal compilation of .c files
d3b23034	4	into object files, but also for creating src/Makefile.
564b85ec	5	(delimited by comment "start of cpp stuff"). some cpp implementations
7c2fb837	6	insert whitespace in between tokens.
564b85ec TTN	7
	8	during makefile creation, the preprocessor symbol NOT_C_CODE is defined.
	9	this should not be defined for normal .c file compilation.
	10
	11	there has been discussion on eliminating this use of cpp and relying
	12	solely on autoconf processing. rms says to leave it be.
ab5796a9 MB	13
ab5796a9 MB	14	;;; arch-tag: d654291e-9fc8-41b7-ab0c-d3cde842a8e0