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-rw-r--r--community/ghc/0003-llvmGen-Accept-range-of-LLVM-versions.patch484
1 files changed, 0 insertions, 484 deletions
diff --git a/community/ghc/0003-llvmGen-Accept-range-of-LLVM-versions.patch b/community/ghc/0003-llvmGen-Accept-range-of-LLVM-versions.patch
deleted file mode 100644
index 6dd309fe542..00000000000
--- a/community/ghc/0003-llvmGen-Accept-range-of-LLVM-versions.patch
+++ /dev/null
@@ -1,484 +0,0 @@
-From c87c63770f06c6b56382858f893977c47683b65f Mon Sep 17 00:00:00 2001
-From: Ben Gamari <ben@smart-cactus.org>
-Date: Tue, 9 Mar 2021 11:37:18 -0500
-Subject: [PATCH 3/9] llvmGen: Accept range of LLVM versions
-
-Previously we would support only one LLVM major version. Here we
-generalize this to accept a range, taking this range to be LLVM 10 to 11,
-as 11 is necessary for Apple M1 support. We also accept 12, as that is
-what apple ships with BigSur on the M1.
-
-(cherry picked from commit 84927818ee68c6826327abc26d4647fb56053fb7)
----
- aclocal.m4 | 35 ++++---
- compiler/GHC/CmmToLlvm.hs | 11 +-
- compiler/GHC/CmmToLlvm/Base.hs | 12 ++-
- compiler/GHC/SysTools/Tasks.hs | 9 +-
- configure.ac | 12 ++-
- distrib/configure.ac.in | 7 +-
- ghc.mk | 9 +-
- hadrian/src/Rules/BinaryDist.hs | 3 +
- hadrian/src/Rules/SourceDist.hs | 3 +-
- m4/ax_compare_version.m4 | 177 ++++++++++++++++++++++++++++++++
- 10 files changed, 243 insertions(+), 35 deletions(-)
- create mode 100644 m4/ax_compare_version.m4
-
-diff --git a/aclocal.m4 b/aclocal.m4
-index 6f18a9662d..a296dbc243 100644
---- a/aclocal.m4
-+++ b/aclocal.m4
-@@ -3,6 +3,8 @@
- # To be a good autoconf citizen, names of local macros have prefixed with FP_ to
- # ensure we don't clash with any pre-supplied autoconf ones.
-
-+m4_include([m4/ax_compare_version.m4])
-+
- # FPTOOLS_WRITE_FILE
- # ------------------
- # Write $2 to the file named $1.
-@@ -2231,22 +2233,29 @@ AC_DEFUN([XCODE_VERSION],[
- #
- # $1 = the variable to set
- # $2 = the command to look for
--# $3 = the version of the command to look for
-+# $3 = the lower bound version of the command to look for
-+# $4 = the upper bound version of the command to look for.
- #
- AC_DEFUN([FIND_LLVM_PROG],[
- # Test for program with and without version name.
-- AC_CHECK_TOOLS([$1], [$2-$3 $2-$3.0 $2], [:])
-- if test "$$1" != ":"; then
-- AC_MSG_CHECKING([$$1 is version $3])
-- if test `$$1 --version | grep -c "version $3"` -gt 0 ; then
-- AC_MSG_RESULT(yes)
-- else
-- AC_MSG_RESULT(no)
-- $1=""
-- fi
-- else
-- $1=""
-- fi
-+ PROG_VERSION_CANDIDATES=$(for llvmVersion in `seq $4 -1 $3`; do echo "$2-$llvmVersion $2-$llvmVersion.0"; done)
-+ AC_CHECK_TOOLS([$1], [$PROG_VERSION_CANDIDATES $2], [])
-+ AS_IF([test x"$$1" != x],[
-+ PROG_VERSION=`$$1 --version | awk '/.*version [[0-9\.]]+/{for(i=1;i<=NF;i++){ if(\$i ~ /^[[0-9\.]]+$/){print \$i}}}'`
-+ AS_IF([test x"$PROG_VERSION" == x],
-+ [AC_MSG_RESULT(no)
-+ $1=""
-+ AC_MSG_NOTICE([We only support llvm $3 to $4 (no version found).])],
-+ [AC_MSG_CHECKING([$$1 version ($PROG_VERSION) is between $3 and $4])
-+ AX_COMPARE_VERSION([$PROG_VERSION], [lt], [$3],
-+ [AC_MSG_RESULT(no)
-+ $1=""
-+ AC_MSG_NOTICE([We only support llvm $3 to $4 (found $PROG_VERSION).])],
-+ [AX_COMPARE_VERSION([$PROG_VERSION], [gt], [$4],
-+ [AC_MSG_RESULT(no)
-+ $1=""
-+ AC_MSG_NOTICE([We only support llvm $3 to $4 (found $PROG_VERSION).])],
-+ [AC_MSG_RESULT(yes)])])])])
- ])
-
- # CHECK_LD_COPY_BUG()
-diff --git a/compiler/GHC/CmmToLlvm.hs b/compiler/GHC/CmmToLlvm.hs
-index ac8e9718e4..0d2ecb16be 100644
---- a/compiler/GHC/CmmToLlvm.hs
-+++ b/compiler/GHC/CmmToLlvm.hs
-@@ -64,7 +64,8 @@ llvmCodeGen dflags h cmm_stream
- let doWarn = wopt Opt_WarnUnsupportedLlvmVersion dflags
- when (not (llvmVersionSupported ver) && doWarn) $ putMsg dflags $
- "You are using an unsupported version of LLVM!" $$
-- "Currently only " <> text (llvmVersionStr supportedLlvmVersion) <> " is supported." <+>
-+ "Currently only" <+> text (llvmVersionStr supportedLlvmVersionMin) <+>
-+ "to" <+> text (llvmVersionStr supportedLlvmVersionMax) <+> "is supported." <+>
- "System LLVM version: " <> text (llvmVersionStr ver) $$
- "We will try though..."
- let isS390X = platformArch (targetPlatform dflags) == ArchS390X
-@@ -73,8 +74,14 @@ llvmCodeGen dflags h cmm_stream
- "Warning: For s390x the GHC calling convention is only supported since LLVM version 10." <+>
- "You are using LLVM version: " <> text (llvmVersionStr ver)
-
-+ -- HACK: the Nothing case here is potentially wrong here but we
-+ -- currently don't use the LLVM version to guide code generation
-+ -- so this is okay.
-+ let llvm_ver :: LlvmVersion
-+ llvm_ver = fromMaybe supportedLlvmVersionMin mb_ver
-+
- -- run code generation
-- a <- runLlvm dflags (fromMaybe supportedLlvmVersion mb_ver) bufh $
-+ a <- runLlvm dflags llvm_ver bufh $
- llvmCodeGen' dflags (liftStream cmm_stream)
-
- bFlush bufh
-diff --git a/compiler/GHC/CmmToLlvm/Base.hs b/compiler/GHC/CmmToLlvm/Base.hs
-index ead3572a79..a47bfd3baa 100644
---- a/compiler/GHC/CmmToLlvm/Base.hs
-+++ b/compiler/GHC/CmmToLlvm/Base.hs
-@@ -15,7 +15,8 @@ module GHC.CmmToLlvm.Base (
- LiveGlobalRegs,
- LlvmUnresData, LlvmData, UnresLabel, UnresStatic,
-
-- LlvmVersion, supportedLlvmVersion, llvmVersionSupported, parseLlvmVersion,
-+ LlvmVersion, supportedLlvmVersionMin, supportedLlvmVersionMax,
-+ llvmVersionSupported, parseLlvmVersion,
- llvmVersionStr, llvmVersionList,
-
- LlvmM,
-@@ -266,6 +267,7 @@ llvmPtrBits platform = widthInBits $ typeWidth $ gcWord platform
-
- -- Newtype to avoid using the Eq instance!
- newtype LlvmVersion = LlvmVersion { llvmVersionNE :: NE.NonEmpty Int }
-+ deriving (Eq, Ord)
-
- parseLlvmVersion :: String -> Maybe LlvmVersion
- parseLlvmVersion =
-@@ -282,11 +284,13 @@ parseLlvmVersion =
- (ver_str, rest) = span isDigit s
-
- -- | The LLVM Version that is currently supported.
--supportedLlvmVersion :: LlvmVersion
--supportedLlvmVersion = LlvmVersion (sUPPORTED_LLVM_VERSION NE.:| [])
-+supportedLlvmVersionMin, supportedLlvmVersionMax :: LlvmVersion
-+supportedLlvmVersionMin = LlvmVersion (sUPPORTED_LLVM_VERSION_MIN NE.:| [])
-+supportedLlvmVersionMax = LlvmVersion (sUPPORTED_LLVM_VERSION_MAX NE.:| [])
-
- llvmVersionSupported :: LlvmVersion -> Bool
--llvmVersionSupported (LlvmVersion v) = NE.head v == sUPPORTED_LLVM_VERSION
-+llvmVersionSupported v =
-+ v > supportedLlvmVersionMin && v <= supportedLlvmVersionMax
-
- llvmVersionStr :: LlvmVersion -> String
- llvmVersionStr = intercalate "." . map show . llvmVersionList
-diff --git a/compiler/GHC/SysTools/Tasks.hs b/compiler/GHC/SysTools/Tasks.hs
-index 7dc40cef04..1ab3a0a425 100644
---- a/compiler/GHC/SysTools/Tasks.hs
-+++ b/compiler/GHC/SysTools/Tasks.hs
-@@ -11,6 +11,7 @@ module GHC.SysTools.Tasks where
-
- import GHC.Utils.Exception as Exception
- import GHC.Utils.Error
-+import GHC.CmmToLlvm.Base (LlvmVersion, llvmVersionStr, supportedLlvmVersionMin, supportedLlvmVersionMax, llvmVersionStr, parseLlvmVersion)
- import GHC.Driver.Types
- import GHC.Driver.Session
- import GHC.Utils.Outputable
-@@ -23,8 +24,6 @@ import System.IO
- import System.Process
- import GHC.Prelude
-
--import GHC.CmmToLlvm.Base (LlvmVersion, llvmVersionStr, supportedLlvmVersion, parseLlvmVersion)
--
- import GHC.SysTools.Process
- import GHC.SysTools.Info
-
-@@ -236,8 +235,10 @@ figureLlvmVersion dflags = traceToolCommand dflags "llc" $ do
- errorMsg dflags $ vcat
- [ text "Warning:", nest 9 $
- text "Couldn't figure out LLVM version!" $$
-- text ("Make sure you have installed LLVM " ++
-- llvmVersionStr supportedLlvmVersion) ]
-+ text ("Make sure you have installed LLVM between "
-+ ++ llvmVersionStr supportedLlvmVersionMin
-+ ++ " and "
-+ ++ llvmVersionStr supportedLlvmVersionMax) ]
- return Nothing)
-
-
-diff --git a/configure.ac b/configure.ac
-index d967d90e70..c6a1c96d02 100644
---- a/configure.ac
-+++ b/configure.ac
-@@ -716,10 +716,14 @@ AC_SUBST(InstallNameToolCmd)
- # tools we are looking for. In the past, GHC supported a number of
- # versions of LLVM simultaneously, but that stopped working around
- # 3.5/3.6 release of LLVM.
--LlvmVersion=9
--AC_SUBST([LlvmVersion])
--sUPPORTED_LLVM_VERSION=$(echo \($LlvmVersion\) | sed 's/\./,/')
--AC_DEFINE_UNQUOTED([sUPPORTED_LLVM_VERSION], ${sUPPORTED_LLVM_VERSION}, [The supported LLVM version number])
-+LlvmMinVersion=10
-+LlvmMaxVersion=12 # inclusive
-+AC_SUBST([LlvmMinVersion])
-+AC_SUBST([LlvmMaxVersion])
-+sUPPORTED_LLVM_VERSION_MIN=$(echo \($LlvmMinVersion\) | sed 's/\./,/')
-+sUPPORTED_LLVM_VERSION_MAX=$(echo \($LlvmMaxVersion\) | sed 's/\./,/')
-+AC_DEFINE_UNQUOTED([sUPPORTED_LLVM_VERSION_MIN], ${sUPPORTED_LLVM_VERSION_MIN}, [The minimum supported LLVM version number])
-+AC_DEFINE_UNQUOTED([sUPPORTED_LLVM_VERSION_MAX], ${sUPPORTED_LLVM_VERSION_MAX}, [The maximum supported LLVM version number])
-
- dnl ** Which LLVM clang to use?
- dnl --------------------------------------------------------------
-diff --git a/distrib/configure.ac.in b/distrib/configure.ac.in
-index 4de89941df..c287c3368d 100644
---- a/distrib/configure.ac.in
-+++ b/distrib/configure.ac.in
-@@ -118,19 +118,20 @@ AC_SUBST([StripCmd])
- # tools we are looking for. In the past, GHC supported a number of
- # versions of LLVM simultaneously, but that stopped working around
- # 3.5/3.6 release of LLVM.
--LlvmVersion=@LlvmVersion@
-+LlvmMinVersion=@LlvmMinVersion@
-+LlvmMaxVersion=@LlvmMaxVersion@
-
- dnl ** Which LLVM llc to use?
- dnl --------------------------------------------------------------
- AC_ARG_VAR(LLC,[Use as the path to LLVM's llc [default=autodetect]])
--FIND_LLVM_PROG([LLC], [llc], [$LlvmVersion])
-+FIND_LLVM_PROG([LLC], [llc], [$LlvmMinVersion], [$LlvmMaxVersion])
- LlcCmd="$LLC"
- AC_SUBST([LlcCmd])
-
- dnl ** Which LLVM opt to use?
- dnl --------------------------------------------------------------
- AC_ARG_VAR(OPT,[Use as the path to LLVM's opt [default=autodetect]])
--FIND_LLVM_PROG([OPT], [opt], [$LlvmVersion])
-+FIND_LLVM_PROG([OPT], [opt], [$LlvmMinVersion], [$LlvmMaxVersion])
- OptCmd="$OPT"
- AC_SUBST([OptCmd])
-
-diff --git a/ghc.mk b/ghc.mk
-index 8434bd1d6e..0623e3eb5d 100644
---- a/ghc.mk
-+++ b/ghc.mk
-@@ -1074,7 +1074,7 @@ BIN_DIST_MK = $(BIN_DIST_PREP_DIR)/bindist.mk
- unix-binary-dist-prep: $(includes_1_H_CONFIG) $(includes_1_H_PLATFORM) $(includes_1_H_VERSION)
- $(call removeTrees,bindistprep/)
- "$(MKDIRHIER)" $(BIN_DIST_PREP_DIR)
-- set -e; for i in packages LICENSE compiler ghc rts libraries utils docs libffi includes driver mk rules Makefile aclocal.m4 config.sub config.guess install-sh llvm-targets llvm-passes ghc.mk inplace distrib/configure.ac distrib/README distrib/INSTALL; do ln -s ../../$$i $(BIN_DIST_PREP_DIR)/; done
-+ set -e; for i in packages LICENSE compiler ghc rts libraries utils docs libffi includes driver mk rules Makefile m4 aclocal.m4 config.sub config.guess install-sh llvm-targets llvm-passes ghc.mk inplace distrib/configure.ac distrib/README distrib/INSTALL; do ln -s ../../$$i $(BIN_DIST_PREP_DIR)/; done
- echo "HADDOCK_DOCS = $(HADDOCK_DOCS)" >> $(BIN_DIST_MK)
- echo "BUILD_SPHINX_HTML = $(BUILD_SPHINX_HTML)" >> $(BIN_DIST_MK)
- echo "BUILD_SPHINX_PDF = $(BUILD_SPHINX_PDF)" >> $(BIN_DIST_MK)
-@@ -1167,12 +1167,13 @@ SRC_DIST_TESTSUITE_TARBALL = $(SRC_DIST_ROOT)/$(SRC_DIST_TESTSUITE_NAME).
- #
- # Files to include in source distributions
- #
--SRC_DIST_GHC_DIRS = mk rules docs distrib bindisttest libffi includes \
-+SRC_DIST_GHC_DIRS = mk m4 rules docs distrib bindisttest libffi includes \
- utils docs rts compiler ghc driver libraries libffi-tarballs \
-- hadrian
-+ hadrian
- SRC_DIST_GHC_FILES += \
- configure.ac config.guess config.sub configure \
-- aclocal.m4 README.md ANNOUNCE HACKING.md INSTALL.md LICENSE Makefile \
-+ aclocal.m4 m4/ax_compare_version.m4 \
-+ README.md ANNOUNCE HACKING.md INSTALL.md LICENSE Makefile \
- install-sh llvm-targets llvm-passes VERSION GIT_COMMIT_ID \
- boot packages ghc.mk MAKEHELP.md
-
-diff --git a/hadrian/src/Rules/BinaryDist.hs b/hadrian/src/Rules/BinaryDist.hs
-index 8709de6b26..a527664b23 100644
---- a/hadrian/src/Rules/BinaryDist.hs
-+++ b/hadrian/src/Rules/BinaryDist.hs
-@@ -203,11 +203,14 @@ bindistRules = do
- root -/- "bindist" -/- "ghc-*" -/- "configure" %> \configurePath -> do
- ghcRoot <- topDirectory
- copyFile (ghcRoot -/- "aclocal.m4") (ghcRoot -/- "distrib" -/- "aclocal.m4")
-+ copyDirectory (ghcRoot -/- "m4") (ghcRoot -/- "distrib")
- buildWithCmdOptions [] $
- target (vanillaContext Stage1 ghc) (Autoreconf $ ghcRoot -/- "distrib") [] []
- -- We clean after ourselves, moving the configure script we generated in
- -- our bindist dir
- removeFile (ghcRoot -/- "distrib" -/- "aclocal.m4")
-+ removeDirectory (ghcRoot -/- "distrib" -/- "m4")
-+
- moveFile (ghcRoot -/- "distrib" -/- "configure") configurePath
-
- -- Generate the Makefile that enables the "make install" part
-diff --git a/hadrian/src/Rules/SourceDist.hs b/hadrian/src/Rules/SourceDist.hs
-index 78c1539b3d..de35922ae1 100644
---- a/hadrian/src/Rules/SourceDist.hs
-+++ b/hadrian/src/Rules/SourceDist.hs
-@@ -113,7 +113,8 @@ prepareTree dest = do
- , "mk"
- , "rts"
- , "rules"
-- , "utils" ]
-+ , "utils"
-+ , "m4" ]
- srcFiles =
- [ "GIT_COMMIT_ID"
- , "HACKING.md"
-diff --git a/m4/ax_compare_version.m4 b/m4/ax_compare_version.m4
-new file mode 100644
-index 0000000000..ffb4997e8b
---- /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
---
-2.33.0
-