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fe709541 JR |
1 | # SYNOPSIS |
2 | # | |
3 | # AX_PROG_FLEX_VERSION([VERSION],[ACTION-IF-TRUE],[ACTION-IF-FALSE]) | |
4 | # | |
5 | # DESCRIPTION | |
6 | # | |
7 | # Makes sure that flex version is greater or equal to the version indicated. | |
8 | # If true the shell commands in ACTION-IF-TRUE are executed. If not the shell | |
9 | # commands in commands in ACTION-IF-TRUE are executed. If not the shell | |
10 | # commands in ACTION-IF-FALSE are run. Note if $FLEX is not set (for example | |
11 | # by running AC_CHECK_PROG or AC_PATH_PROG) the macro will fail. | |
12 | # | |
13 | # Example: | |
14 | # | |
15 | # AC_PATH_PROG([FLEX],[flex]) | |
16 | # AX_PROG_FLEX_VERSION([2.5.39],[ ... ],[ ... ]) | |
17 | # | |
18 | # This will check to make sure that the flex you have is at least | |
19 | # version 2.5.39 or greater. | |
20 | # | |
21 | # NOTE: This macro uses the $FLEX variable to perform the check. | |
22 | # | |
23 | # LICENSE | |
24 | # | |
25 | # Copyright (c) 2015 Jonathan Rajotte-Julien <jonathan.rajotte-julien@efficios.com> | |
26 | # | |
27 | # Copying and distribution of this file, with or without modification, are | |
28 | # permitted in any medium without royalty provided the copyright notice | |
29 | # and this notice are preserved. This file is offered as-is, without any | |
30 | # warranty. | |
31 | ||
32 | #serial 1 | |
33 | ||
34 | AC_DEFUN([AX_PROG_FLEX_VERSION],[ | |
35 | AC_REQUIRE([AC_PROG_SED]) | |
36 | AC_REQUIRE([AC_PROG_GREP]) | |
37 | ||
38 | AS_IF([test -n "$FLEX"],[ | |
39 | ax_flex_version="$1" | |
40 | ||
41 | AC_MSG_CHECKING([for flex version]) | |
42 | changequote(<<,>>) | |
43 | flex_version=`$FLEX --version 2>&1 \ | |
44 | | $SED -n -e '/flex /b inspect | |
45 | b | |
46 | : inspect | |
47 | s/.* (\{0,1\}\([0-9]*\.[0-9]*\.[0-9]*\))\{0,1\}.*/\1/;p'` | |
48 | changequote([,]) | |
49 | AC_MSG_RESULT($flex_version) | |
50 | ||
51 | AC_SUBST([FLEX_VERSION],[$flex_version]) | |
52 | ||
53 | AX_COMPARE_VERSION([$flex_version],[ge],[$ax_flex_version],[ | |
54 | : | |
55 | $2 | |
56 | ],[ | |
57 | : | |
58 | $3 | |
59 | ]) | |
60 | ],[ | |
61 | AC_MSG_WARN([could not find flex]) | |
62 | $3 | |
63 | ]) | |
64 | ]) |