projects / lttng-tools.git / blame
| Commit | Line | Data |
|---|---|---|
| ea70e634 | 1 | # =========================================================================== |
| 6333b87b | 2 | # https://www.gnu.org/software/autoconf-archive/ax_prog_flex_version.html |
| ea70e634 JR |
3 | # =========================================================================== |
| 4 | # | |
| 5 | # SYNOPSIS | |
| 6 | # | |
| 7 | # AX_PROG_FLEX_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE]) | |
| 8 | # | |
| 9 | # DESCRIPTION | |
| 10 | # | |
| 11 | # Makes sure that flex version is greater or equal to the version | |
| 12 | # indicated. If true the shell commands in ACTION-IF-TRUE are executed. If | |
| 13 | # not the shell commands in commands in ACTION-IF-TRUE are executed. If | |
| 14 | # not the shell commands in ACTION-IF-FALSE are run. Note if $FLEX is not | |
| 15 | # set (for example by running AC_CHECK_PROG or AC_PATH_PROG) the macro | |
| 16 | # will fail. | |
| 17 | # | |
| 18 | # Example: | |
| 19 | # | |
| 20 | # AC_PATH_PROG([FLEX],[flex]) | |
| 21 | # AX_PROG_FLEX_VERSION([2.5.39],[ ... ],[ ... ]) | |
| 22 | # | |
| 23 | # This will check to make sure that the flex you have is at least version | |
| 24 | # 2.5.39 or greater. | |
| 25 | # | |
| 26 | # NOTE: This macro uses the $FLEX variable to perform the check. | |
| 27 | # | |
| 28 | # LICENSE | |
| 29 | # | |
| 4942c256 | 30 | # Copyright (c) 2015 Jonathan Rajotte <jonathan.rajotte-julien@efficios.com> |
| ea70e634 JR |
31 | # |
| 32 | # Copying and distribution of this file, with or without modification, are | |
| 33 | # permitted in any medium without royalty provided the copyright notice | |
| 34 | # and this notice are preserved. This file is offered as-is, without any | |
| 35 | # warranty. | |
| 36 | ||
| 6333b87b | 37 | #serial 2 |
| ea70e634 JR |
38 | |
| 39 | AC_DEFUN([AX_PROG_FLEX_VERSION],[ | |
| 40 | AC_REQUIRE([AC_PROG_SED]) | |
| 41 | AC_REQUIRE([AC_PROG_GREP]) | |
| 42 | ||
| 43 | AS_IF([test -n "$FLEX"],[ | |
| 44 | ax_flex_version="$1" | |
| 45 | ||
| 46 | AC_MSG_CHECKING([for flex version]) | |
| 47 | changequote(<<,>>) | |
| 48 | flex_version=`$FLEX --version 2>&1 \ | |
| 49 | | $SED -n -e '/flex /b inspect | |
| 50 | b | |
| 51 | : inspect | |
| 52 | s/.* (\{0,1\}\([0-9]*\.[0-9]*\.[0-9]*\))\{0,1\}.*/\1/;p'` | |
| 53 | changequote([,]) | |
| 54 | AC_MSG_RESULT($flex_version) | |
| 55 | ||
| 56 | AC_SUBST([FLEX_VERSION],[$flex_version]) | |
| 57 | ||
| 58 | AX_COMPARE_VERSION([$flex_version],[ge],[$ax_flex_version],[ | |
| 59 | : | |
| 60 | $2 | |
| 61 | ],[ | |
| 62 | : | |
| 63 | $3 | |
| 64 | ]) | |
| 65 | ],[ | |
| 66 | AC_MSG_WARN([could not find flex]) | |
| 67 | $3 | |
| 68 | ]) | |
| 69 | ]) |