projects / babeltrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a3ad29b | 1 | # =========================================================================== |
| 540d833d | 2 | # https://www.gnu.org/software/autoconf-archive/ax_prog_flex_version.html |
| 1a3ad29b JR |
3 | # =========================================================================== |
| 4 | # | |
| 33bdeb6a JR |
5 | # SYNOPSIS |
| 6 | # | |
| 7 | # AX_PROG_FLEX_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE]) | |
| 8 | # | |
| 9 | # DESCRIPTION | |
| 10 | # | |
| 1a3ad29b JR |
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 | |
| 540d833d MJ |
14 | # not the shell commands in ACTION-IF-FALSE are run. Note if $LEX is not |
| 15 | # set (for example by running AC_PROG_LEX or AC_PATH_PROG) the macro | |
| 1a3ad29b | 16 | # will fail. |
| 33bdeb6a JR |
17 | # |
| 18 | # Example: | |
| 19 | # | |
| 540d833d | 20 | # AC_PROG_LEX |
| 33bdeb6a JR |
21 | # AX_PROG_FLEX_VERSION([2.5.39],[ ... ],[ ... ]) |
| 22 | # | |
| 1a3ad29b JR |
23 | # This will check to make sure that the flex you have is at least version |
| 24 | # 2.5.39 or greater. | |
| 33bdeb6a | 25 | # |
| 540d833d MJ |
26 | # NOTE: This macro uses the $LEX variable to perform the check, if it's |
| 27 | # empty it will failover to the $FLEX variable for backwards compatibility. | |
| 33bdeb6a JR |
28 | # |
| 29 | # LICENSE | |
| 30 | # | |
| 31 | # Copyright (c) 2015 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> | |
| 540d833d | 32 | # 2017 Michael Jeanson <mjeanson@efficios.com> |
| 33bdeb6a JR |
33 | # |
| 34 | # Copying and distribution of this file, with or without modification, are | |
| 35 | # permitted in any medium without royalty provided the copyright notice | |
| 36 | # and this notice are preserved. This file is offered as-is, without any | |
| 37 | # warranty. | |
| 38 | ||
| 540d833d | 39 | #serial 3 |
| 33bdeb6a JR |
40 | |
| 41 | AC_DEFUN([AX_PROG_FLEX_VERSION],[ | |
| 42 | AC_REQUIRE([AC_PROG_SED]) | |
| 43 | AC_REQUIRE([AC_PROG_GREP]) | |
| 44 | ||
| 540d833d MJ |
45 | AS_IF([test -z "$LEX"],[ |
| 46 | AS_IF([test -n "$FLEX"],[ | |
| 47 | LEX=$FLEX | |
| 48 | ]) | |
| 49 | ]) | |
| 50 | ||
| 51 | AS_IF([test -n "$LEX"],[ | |
| 33bdeb6a JR |
52 | ax_flex_version="$1" |
| 53 | ||
| 54 | AC_MSG_CHECKING([for flex version]) | |
| 55 | changequote(<<,>>) | |
| 540d833d | 56 | flex_version=`$LEX --version 2>&1 \ |
| 33bdeb6a JR |
57 | | $SED -n -e '/flex /b inspect |
| 58 | b | |
| 59 | : inspect | |
| 60 | s/.* (\{0,1\}\([0-9]*\.[0-9]*\.[0-9]*\))\{0,1\}.*/\1/;p'` | |
| 61 | changequote([,]) | |
| 62 | AC_MSG_RESULT($flex_version) | |
| 63 | ||
| 64 | AC_SUBST([FLEX_VERSION],[$flex_version]) | |
| 65 | ||
| 66 | AX_COMPARE_VERSION([$flex_version],[ge],[$ax_flex_version],[ | |
| 67 | : | |
| 68 | $2 | |
| 69 | ],[ | |
| 70 | : | |
| 71 | $3 | |
| 72 | ]) | |
| 73 | ],[ | |
| 74 | AC_MSG_WARN([could not find flex]) | |
| 75 | $3 | |
| 76 | ]) | |
| 77 | ]) |