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Revision as of 17:09, 31 July 2006 (edit) Massemanet (Talk | contribs) ← Previous diff		Revision as of 17:11, 31 July 2006 (edit) (undo) Massemanet (Talk | contribs) Next diff →
Line 24:		Line 24:
	:6. run make; make install		:6. run make; make install
	===notes===		===notes===
-	steps 0-3 need only be done once.	+	*steps 0-3 need only be done once.
-	note that if you add	+	*note that if you add
	<pre>		<pre>
	bif re:grep/2		bif re:grep/2
Line 38:		Line 38:
	BIF_RETTYPE re_grep_2(BIF_ALIST_2);		BIF_RETTYPE re_grep_2(BIF_ALIST_2);
	</pre>		</pre>
		+	*unless you really know what you're doing, you'll be better off using a linked-in driver or a port.
	[[Category:HowTo]]		[[Category:HowTo]]

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Revision as of 17:11, 31 July 2006

steps

1. run configure

2. add your bifs to erts/emulator/beam/bif.tab

bif re:grep/2 bif re:compile/1

3. create a C file

erts/emulator/beam/erl_bif_re.c

4. add your C file to erts/emulator/<arch>/Makefile

RUN_OBJS = $(OBJDIR)/erl_bif_re.o \

5. implement your bifs by stealing bits from existing erl_bif_*.c files

BIF_RETTYPE re_grep_2(BIF_ALIST_2){
  Eterm result;
  result = magic_function(); 
  BIF_RET(result);
}

6. run make; make install

notes

• steps 0-3 need only be done once.

• note that if you add

bif re:grep/2

to bif.tab there should be a erl_bif_re.c that implements

BIF_RETTYPE re_grep_2(BIF_ALIST_2);

• unless you really know what you're doing, you'll be better off using a linked-in driver or a port.