nobu / ruby-lang.org wrote:
> Hi,
> 
> At Sun, 9 Apr 2006 01:51:38 +0900,
> Robin Stocker wrote in [ruby-core:07688]:
>> +ifeq ($(firstword $(YACC)), bison)
>> +	cp $< $<.tmp
>> +else
>> +# If we don't have a bison yacc, strip the literal strings
>> +	sed '/^%token/ s|"[^"]*"||' $< > $<.tmp	
>> +endif
> 
> This depends on GNU make?

I had a look at the manual and it is indeed listed as an invention of 
GNU make, see "Conditional execution" here:
http://www.gnu.org/software/make/manual/html_node/Features.html

What if it is replaced with this?:
   cp $< $<.tmp
   echo $(YACC) | grep -q bison || sed '/^%token/ s|"[^"]*"||' $< > $<.tmp

Regards,
   Robin