| # | |
| # Check for Bison. | |
| # | |
| # This macro verifies that Bison is installed. If successful, then | |
| # 1) YACC is set to bison -y (to emulate YACC calls) | |
| # 2) BISON is set to bison | |
| # | |
| AC_DEFUN([AC_PROG_BISON], | |
| [AC_CACHE_CHECK([],[llvm_cv_has_bison],[AC_PROG_YACC()]) | |
| if test "$YACC" != "bison -y"; then | |
| AC_MSG_ERROR([bison not found but required]) | |
| else | |
| AC_SUBST(BISON,[bison],[location of bison]) | |
| fi]) |