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-rw-r--r--configure.ac13
-rw-r--r--m4/ax_check_gnu_make.m495
-rw-r--r--m4/ax_compare_version.m4177
3 files changed, 285 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index c1f84ea..8abddaf 100644
--- a/configure.ac
+++ b/configure.ac
@@ -135,6 +135,19 @@ AC_PROG_SED
AC_PROG_LN_S
AC_PROG_MKDIR_P
+#
+# Check for GNU Make
+#
+have_gnu_make=no
+AX_CHECK_GNU_MAKE([have_gnu_make=maybe])
+if test "x$have_gnu_make" = xmaybe; then
+ AX_COMPARE_VERSION([$ax_check_gnu_make_version], [ge], [4.0],
+ [have_gnu_make=yes])
+fi
+if test "x$have_gnu_make" != xyes; then
+ AC_MSG_ERROR([GNU Make version 4.0 or greater is required to build Wireshark])
+fi
+
AC_PATH_PROG(PERL, perl)
# Check for Python.
diff --git a/m4/ax_check_gnu_make.m4 b/m4/ax_check_gnu_make.m4
new file mode 100644
index 0000000..6811043
--- /dev/null
+++ b/m4/ax_check_gnu_make.m4
@@ -0,0 +1,95 @@
+# ===========================================================================
+# https://www.gnu.org/software/autoconf-archive/ax_check_gnu_make.html
+# ===========================================================================
+#
+# SYNOPSIS
+#
+# AX_CHECK_GNU_MAKE([run-if-true],[run-if-false])
+#
+# DESCRIPTION
+#
+# This macro searches for a GNU version of make. If a match is found:
+#
+# * The makefile variable `ifGNUmake' is set to the empty string, otherwise
+# it is set to "#". This is useful for including a special features in a
+# Makefile, which cannot be handled by other versions of make.
+# * The makefile variable `ifnGNUmake' is set to #, otherwise
+# it is set to the empty string. This is useful for including a special
+# features in a Makefile, which can be handled
+# by other versions of make or to specify else like clause.
+# * The variable `_cv_gnu_make_command` is set to the command to invoke
+# GNU make if it exists, the empty string otherwise.
+# * The variable `ax_cv_gnu_make_command` is set to the command to invoke
+# GNU make by copying `_cv_gnu_make_command`, otherwise it is unset.
+# * If GNU Make is found, its version is extracted from the output of
+# `make --version` as the last field of a record of space-separated
+# columns and saved into the variable `ax_check_gnu_make_version`.
+# * Additionally if GNU Make is found, run shell code run-if-true
+# else run shell code run-if-false.
+#
+# Here is an example of its use:
+#
+# Makefile.in might contain:
+#
+# # A failsafe way of putting a dependency rule into a makefile
+# $(DEPEND):
+# $(CC) -MM $(srcdir)/*.c > $(DEPEND)
+#
+# @ifGNUmake@ ifeq ($(DEPEND),$(wildcard $(DEPEND)))
+# @ifGNUmake@ include $(DEPEND)
+# @ifGNUmake@ else
+# fallback code
+# @ifGNUmake@ endif
+#
+# Then configure.in would normally contain:
+#
+# AX_CHECK_GNU_MAKE()
+# AC_OUTPUT(Makefile)
+#
+# Then perhaps to cause gnu make to override any other make, we could do
+# something like this (note that GNU make always looks for GNUmakefile
+# first):
+#
+# if ! test x$_cv_gnu_make_command = x ; then
+# mv Makefile GNUmakefile
+# echo .DEFAULT: > Makefile ;
+# echo \ $_cv_gnu_make_command \$@ >> Makefile;
+# fi
+#
+# Then, if any (well almost any) other make is called, and GNU make also
+# exists, then the other make wraps the GNU make.
+#
+# LICENSE
+#
+# Copyright (c) 2008 John Darrington <j.darrington@elvis.murdoch.edu.au>
+# Copyright (c) 2015 Enrico M. Crisostomo <enrico.m.crisostomo@gmail.com>
+#
+# Copying and distribution of this file, with or without modification, are
+# permitted in any medium without royalty provided the copyright notice
+# and this notice are preserved. This file is offered as-is, without any
+# warranty.
+
+#serial 11
+
+AC_DEFUN([AX_CHECK_GNU_MAKE],dnl
+ [AC_PROG_AWK
+ AC_CACHE_CHECK([for GNU make],[_cv_gnu_make_command],[dnl
+ _cv_gnu_make_command="" ;
+dnl Search all the common names for GNU make
+ for a in "$MAKE" make gmake gnumake ; do
+ if test -z "$a" ; then continue ; fi ;
+ if "$a" --version 2> /dev/null | grep GNU 2>&1 > /dev/null ; then
+ _cv_gnu_make_command=$a ;
+ AX_CHECK_GNU_MAKE_HEADLINE=$("$a" --version 2> /dev/null | grep "GNU Make")
+ ax_check_gnu_make_version=$(echo ${AX_CHECK_GNU_MAKE_HEADLINE} | ${AWK} -F " " '{ print $(NF); }')
+ break ;
+ fi
+ done ;])
+dnl If there was a GNU version, then set @ifGNUmake@ to the empty string, '#' otherwise
+ AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifGNUmake], ["#"])], [AS_VAR_SET([ifGNUmake], [""])])
+ AS_VAR_IF([_cv_gnu_make_command], [""], [AS_VAR_SET([ifnGNUmake], [""])], [AS_VAR_SET([ifGNUmake], ["#"])])
+ AS_VAR_IF([_cv_gnu_make_command], [""], [AS_UNSET(ax_cv_gnu_make_command)], [AS_VAR_SET([ax_cv_gnu_make_command], [${_cv_gnu_make_command}])])
+ AS_VAR_IF([_cv_gnu_make_command], [""],[$2],[$1])
+ AC_SUBST([ifGNUmake])
+ AC_SUBST([ifnGNUmake])
+])
diff --git a/m4/ax_compare_version.m4 b/m4/ax_compare_version.m4
new file mode 100644
index 0000000..ffb4997
--- /dev/null
+++ b/m4/ax_compare_version.m4
@@ -0,0 +1,177 @@
+# ===========================================================================
+# https://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 13
+
+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(
+ [invalid 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([invalid 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