Commit | Line | Data |
---|---|---|
ea70e634 JR |
1 | # =========================================================================== |
2 | # http://www.gnu.org/software/autoconf-archive/ax_prog_flex_version.html | |
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 $FLEX variable to perform the check. | |
27 | # | |
28 | # LICENSE | |
29 | # | |
30 | # Copyright (c) 2015 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> | |
31 | # | |
32 | # Copying and distribution of this file, with or without modification, are | |
33 | # permitted in any medium without royalty provided the copyright notice | |
34 | # and this notice are preserved. This file is offered as-is, without any | |
35 | # warranty. | |
36 | ||
37 | #serial 1 | |
38 | ||
39 | AC_DEFUN([AX_PROG_FLEX_VERSION],[ | |
40 | AC_REQUIRE([AC_PROG_SED]) | |
41 | AC_REQUIRE([AC_PROG_GREP]) | |
42 | ||
43 | AS_IF([test -n "$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 | ]) |