They have been developed using the AZTEC C86 compiler, and are portable to any other standard C environment. I have tested this code with AZTEC CII for the 8080, and with the C compiler on XENIX 286, and they work fine.
編譯原理的一個小實例 YACC(Yet Another Compiler-Compiler)是LALR(1)分析器的自動生成工具,它的第一版于70年代初發表,是美國貝爾實驗室的軟件產品(作者為S.C.Johnson) YACC將一前后文無關文法轉換為一LALR(1)分析表,并提供使用該分析表進行語法分析的總控程序yyparse().