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	note that if you add		note that if you add
-	<tt>	+	<pre>
	bif re:grep/2		bif re:grep/2
-	</tt>	+	</pre>
	to bif.tab there should be a		to bif.tab there should be a
	<tt>		<tt>
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	</tt>		</tt>
	that implements		that implements
-	<tt>	+	<pre>
	BIF_RETTYPE re_grep_2(BIF_ALIST_2);		BIF_RETTYPE re_grep_2(BIF_ALIST_2);
-	</tt>	+	</pre>
	[[Category:HowTo]]		[[Category:HowTo]]

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Revision as of 17:02, 31 July 2006

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

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);