| Reid Spencer | 491f681 | 2004-09-07 06:56:14 +0000 | [diff] [blame] | 1 | # |
| 2 | # Check for Bison. |
| 3 | # |
| 4 | # This macro verifies that Bison is installed. If successful, then |
| 5 | # 1) YACC is set to bison -y (to emulate YACC calls) |
| 6 | # 2) BISON is set to bison |
| 7 | # |
| 8 | AC_DEFUN([AC_PROG_BISON], |
| Reid Spencer | 898ae19 | 2004-11-25 04:42:25 +0000 | [diff] [blame] | 9 | [AC_CACHE_CHECK([],[llvm_cv_has_bison], |
| Reid Spencer | 491f681 | 2004-09-07 06:56:14 +0000 | [diff] [blame] | 10 | [AC_PROG_YACC() |
| 11 | ]) |
| 12 | if test "$YACC" != "bison -y"; then |
| 13 | AC_MSG_ERROR([bison not found but required]) |
| 14 | else |
| 15 | AC_SUBST(BISON,[bison],[location of bison]) |
| 16 | fi |
| 17 | ]) |