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