+++ /dev/null
-# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_compare_version.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-# AX_COMPARE_VERSION(VERSION_A, OP, VERSION_B, [ACTION-IF-TRUE], [ACTION-IF-FALSE])
-#
-# DESCRIPTION
-#
-# This macro compares two version strings. Due to the various number of
-# minor-version numbers that can exist, and the fact that string
-# comparisons are not compatible with numeric comparisons, this is not
-# necessarily trivial to do in a autoconf script. This macro makes doing
-# these comparisons easy.
-#
-# The six basic comparisons are available, as well as checking equality
-# limited to a certain number of minor-version levels.
-#
-# The operator OP determines what type of comparison to do, and can be one
-# of:
-#
-# eq - equal (test A == B)
-# ne - not equal (test A != B)
-# le - less than or equal (test A <= B)
-# ge - greater than or equal (test A >= B)
-# lt - less than (test A < B)
-# gt - greater than (test A > B)
-#
-# Additionally, the eq and ne operator can have a number after it to limit
-# the test to that number of minor versions.
-#
-# eq0 - equal up to the length of the shorter version
-# ne0 - not equal up to the length of the shorter version
-# eqN - equal up to N sub-version levels
-# neN - not equal up to N sub-version levels
-#
-# When the condition is true, shell commands ACTION-IF-TRUE are run,
-# otherwise shell commands ACTION-IF-FALSE are run. The environment
-# variable 'ax_compare_version' is always set to either 'true' or 'false'
-# as well.
-#
-# Examples:
-#
-# AX_COMPARE_VERSION([3.15.7],[lt],[3.15.8])
-# AX_COMPARE_VERSION([3.15],[lt],[3.15.8])
-#
-# would both be true.
-#
-# AX_COMPARE_VERSION([3.15.7],[eq],[3.15.8])
-# AX_COMPARE_VERSION([3.15],[gt],[3.15.8])
-#
-# would both be false.
-#
-# AX_COMPARE_VERSION([3.15.7],[eq2],[3.15.8])
-#
-# would be true because it is only comparing two minor versions.
-#
-# AX_COMPARE_VERSION([3.15.7],[eq0],[3.15])
-#
-# would be true because it is only comparing the lesser number of minor
-# versions of the two values.
-#
-# Note: The characters that separate the version numbers do not matter. An
-# empty string is the same as version 0. OP is evaluated by autoconf, not
-# configure, so must be a string, not a variable.
-#
-# The author would like to acknowledge Guido Draheim whose advice about
-# the m4_case and m4_ifvaln functions make this macro only include the
-# portions necessary to perform the specific comparison specified by the
-# OP argument in the final configure script.
-#
-# LICENSE
-#
-# Copyright (c) 2008 Tim Toolan <toolan@ele.uri.edu>
-#
-# Copying and distribution of this file, with or without modification, are
-# permitted in any medium without royalty provided the copyright notice
-# and this notice are preserved. This file is offered as-is, without any
-# warranty.
-
-#serial 11
-
-dnl #########################################################################
-AC_DEFUN([AX_COMPARE_VERSION], [
- AC_REQUIRE([AC_PROG_AWK])
-
- # Used to indicate true or false condition
- ax_compare_version=false
-
- # Convert the two version strings to be compared into a format that
- # allows a simple string comparison. The end result is that a version
- # string of the form 1.12.5-r617 will be converted to the form
- # 0001001200050617. In other words, each number is zero padded to four
- # digits, and non digits are removed.
- AS_VAR_PUSHDEF([A],[ax_compare_version_A])
- A=`echo "$1" | sed -e 's/\([[0-9]]*\)/Z\1Z/g' \
- -e 's/Z\([[0-9]]\)Z/Z0\1Z/g' \
- -e 's/Z\([[0-9]][[0-9]]\)Z/Z0\1Z/g' \
- -e 's/Z\([[0-9]][[0-9]][[0-9]]\)Z/Z0\1Z/g' \
- -e 's/[[^0-9]]//g'`
-
- AS_VAR_PUSHDEF([B],[ax_compare_version_B])
- B=`echo "$3" | sed -e 's/\([[0-9]]*\)/Z\1Z/g' \
- -e 's/Z\([[0-9]]\)Z/Z0\1Z/g' \
- -e 's/Z\([[0-9]][[0-9]]\)Z/Z0\1Z/g' \
- -e 's/Z\([[0-9]][[0-9]][[0-9]]\)Z/Z0\1Z/g' \
- -e 's/[[^0-9]]//g'`
-
- dnl # In the case of le, ge, lt, and gt, the strings are sorted as necessary
- dnl # then the first line is used to determine if the condition is true.
- dnl # The sed right after the echo is to remove any indented white space.
- m4_case(m4_tolower($2),
- [lt],[
- ax_compare_version=`echo "x$A
-x$B" | sed 's/^ *//' | sort -r | sed "s/x${A}/false/;s/x${B}/true/;1q"`
- ],
- [gt],[
- ax_compare_version=`echo "x$A
-x$B" | sed 's/^ *//' | sort | sed "s/x${A}/false/;s/x${B}/true/;1q"`
- ],
- [le],[
- ax_compare_version=`echo "x$A
-x$B" | sed 's/^ *//' | sort | sed "s/x${A}/true/;s/x${B}/false/;1q"`
- ],
- [ge],[
- ax_compare_version=`echo "x$A
-x$B" | sed 's/^ *//' | sort -r | sed "s/x${A}/true/;s/x${B}/false/;1q"`
- ],[
- dnl Split the operator from the subversion count if present.
- m4_bmatch(m4_substr($2,2),
- [0],[
- # A count of zero means use the length of the shorter version.
- # Determine the number of characters in A and B.
- ax_compare_version_len_A=`echo "$A" | $AWK '{print(length)}'`
- ax_compare_version_len_B=`echo "$B" | $AWK '{print(length)}'`
-
- # Set A to no more than B's length and B to no more than A's length.
- A=`echo "$A" | sed "s/\(.\{$ax_compare_version_len_B\}\).*/\1/"`
- B=`echo "$B" | sed "s/\(.\{$ax_compare_version_len_A\}\).*/\1/"`
- ],
- [[0-9]+],[
- # A count greater than zero means use only that many subversions
- A=`echo "$A" | sed "s/\(\([[0-9]]\{4\}\)\{m4_substr($2,2)\}\).*/\1/"`
- B=`echo "$B" | sed "s/\(\([[0-9]]\{4\}\)\{m4_substr($2,2)\}\).*/\1/"`
- ],
- [.+],[
- AC_WARNING(
- [illegal OP numeric parameter: $2])
- ],[])
-
- # Pad zeros at end of numbers to make same length.
- ax_compare_version_tmp_A="$A`echo $B | sed 's/./0/g'`"
- B="$B`echo $A | sed 's/./0/g'`"
- A="$ax_compare_version_tmp_A"
-
- # Check for equality or inequality as necessary.
- m4_case(m4_tolower(m4_substr($2,0,2)),
- [eq],[
- test "x$A" = "x$B" && ax_compare_version=true
- ],
- [ne],[
- test "x$A" != "x$B" && ax_compare_version=true
- ],[
- AC_WARNING([illegal OP parameter: $2])
- ])
- ])
-
- AS_VAR_POPDEF([A])dnl
- AS_VAR_POPDEF([B])dnl
-
- dnl # Execute ACTION-IF-TRUE / ACTION-IF-FALSE.
- if test "$ax_compare_version" = "true" ; then
- m4_ifvaln([$4],[$4],[:])dnl
- m4_ifvaln([$5],[else $5])dnl
- fi
-]) dnl AX_COMPARE_VERSION
projects / lttng-tools.git / blobdiff