Compare revisions

1fac178c · de3de152 · 4a1fb239 · 23ff36a0 · abbdbb58 · 2db21337
--- a/.clang-format
+++ b/.clang-format
+# This file should be kept in sync with the one in dynare.git (which also
+# contains more explanations).
+Language: Cpp
+Standard: c++20
+ColumnLimit: 100
+BasedOnStyle: GNU
+AllowShortFunctionsOnASingleLine: None
+AlwaysBreakTemplateDeclarations: Yes
+BreakConstructorInitializers: AfterColon
+BreakInheritanceList: AfterColon
+Cpp11BracedListStyle: true
+DeriveLineEnding: false
+IndentPPDirectives: AfterHash
+InsertNewlineAtEOF: true
+PackConstructorInitializers: NextLine
+PPIndentWidth: 1
+PointerAlignment: Left
+# RemoveParentheses: ReturnStatement
+# RemoveSemicolon: true
+SpaceAfterTemplateKeyword: false
+SpaceBeforeParens: ControlStatements
+SpaceBeforeCpp11BracedList: true
--- a/.clang-tidy
+++ b/.clang-tidy
+# TODO: add the following check families:
+# - bugprone-*
+# - cppcoreguidelines-
+# NB: as of clang-tidy 16, we get several false positives inside boost, notably this one:
+#  https://github.com/llvm/llvm-project/issues/40486
+Checks: 'performance-*,modernize-*,-modernize-use-trailing-return-type,-clang-diagnostic-unqualified-std-cast-call'
--- a/.gitignore
+++ b/.gitignore
-# For checking that no file has been unduly ignored, run:
-# $ git ls-files -i --exclude-per-directory=.gitignore
-# Any file that is displayed should be removed from the ignore list
-# (possibly by an exclusion rule beginning with an exclamation mark)
-# Generic ignore rules
 *~
-*.o
-*.a
-*.fig
-\#*\#
-*.txt
-# Build system rules
-build-aux/*
-.deps
-Makefile
-Makefile.in
-configure
-config.log
-config.status
-aclocal.m4
-autom4te.cache
-TAGS
-# Preprocessor
-/src/dynare_m
-/src/dynare_m.exe
-/src/DynareBison.cc
-/src/DynareBison.hh
-/src/FlexLexer.h
-/src/DynareFlex.cc
-/src/location.hh
-/src/position.hh
-/src/stack.hh
-/src/macro/Parser.cc
-/src/macro/Parser.hh
-/src/macro/Tokenizer.cc
-/src/macro/location.hh
-/src/macro/position.hh
-/src/macro/stack.hh
-/src/doc/
-# macOS stuff
-.DS_Store
-# Doc rules
-*.pdf
-*.aux
-*.log
-*.nav
-*.out
-*.snm
-*.toc
-*.vrb
-!/doc/macroprocessor/new-design.pdf
-!/doc/macroprocessor/old-design.pdf
-# test files
-checksum
-*.mod
-*.tex
-*.json
-+*
-# Bison verbose output file
-*.output
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
 variables:
  TERM: linux
-  MINGW32_BOOST_VERSION: 1.71.0-1
+  MINGW64_BOOST_VERSION: 1.88.0-2
-  MINGW64_BOOST_VERSION: 1.71.0-1
  WGET_OPTIONS: '--no-verbose --no-use-server-timestamps --retry-connrefused --retry-on-host-error'
+  # To ensure that "false && true" fails, see https://gitlab.com/gitlab-org/gitlab-runner/-/issues/25394#note_412609647
+  FF_ENABLE_BASH_EXIT_CODE_CHECK: 'true'
-before_script:
+build_linux_x86_64:
-  - 'export REMOTE_PATH=https://www.dynare.org/preprocessor/$CI_COMMIT_SHORT_SHA'
-stages:
-  - build
-  - prepare
-build_linux_32:
  stage: build
  script:
-    - autoreconf -si
+    - meson setup -D buildtype=release build
-    - './configure LDFLAGS="-m32 -static -static-libgcc -static-libstdc++" CXXFLAGS=-m32'
+    - meson compile -C build -v
-    - make -j$(nproc)
-    - strip src/dynare_m
-    - mkdir -p bin
-    - mv src/dynare_m bin
-    - mkdir -p $CI_COMMIT_SHORT_SHA/linux/32
-    - tar cfz $CI_COMMIT_SHORT_SHA/linux/32/preprocessor.tar.gz bin
-    - cd $CI_COMMIT_SHORT_SHA/linux/32 && sha256sum preprocessor.tar.gz > sha256sum
  artifacts:
    paths:
-      - $CI_COMMIT_SHORT_SHA/linux/32/*
+      - build/src/dynare-preprocessor
-    expire_in: 1 hour
-build_linux_64:
+build_linux_arm64:
  stage: build
  script:
-    - autoreconf -si
+    - meson setup -D buildtype=release --cross-file scripts/linux-arm64-cross.ini build
-    - './configure LDFLAGS="-static -static-libgcc -static-libstdc++"'
+    - meson compile -C build -v
-    - make -j$(nproc)
-    - strip src/dynare_m
-    - mkdir -p bin
-    - mv src/dynare_m bin
-    - mkdir -p $CI_COMMIT_SHORT_SHA/linux/64
-    - tar cfz $CI_COMMIT_SHORT_SHA/linux/64/preprocessor.tar.gz bin
-    - cd $CI_COMMIT_SHORT_SHA/linux/64 && sha256sum preprocessor.tar.gz > sha256sum
  artifacts:
    paths:
-      - $CI_COMMIT_SHORT_SHA/linux/64/*
+      - build/src/dynare-preprocessor
-    expire_in: 1 hour
-build_windows_32:
+build_windows_x86_64:
  stage: build
  script:
-    - mkdir -p ~/tarballs
+    - mkdir -p tarballs
-    - '[[ -f ~/tarballs/mingw-w64-i686-boost-$MINGW32_BOOST_VERSION-any.pkg.tar.xz ]] || wget $WGET_OPTIONS -P ~/tarballs http://repo.msys2.org/mingw/i686/mingw-w64-i686-boost-$MINGW32_BOOST_VERSION-any.pkg.tar.xz'
+    - '[[ -f tarballs/mingw-w64-x86_64-boost-$MINGW64_BOOST_VERSION-any.pkg.tar.zst ]] || wget $WGET_OPTIONS -P tarballs http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-boost-$MINGW64_BOOST_VERSION-any.pkg.tar.zst'
    - mkdir -p deps
-    - tar xf ~/tarballs/mingw-w64-i686-boost-$MINGW32_BOOST_VERSION-any.pkg.tar.xz --directory deps
+    - tar xf tarballs/mingw-w64-x86_64-boost-$MINGW64_BOOST_VERSION-any.pkg.tar.zst --directory deps
-    - autoreconf -si
+    - echo -e "[properties]\nboost_root = '$(pwd)/deps/mingw64/'" > boost.ini
-    - './configure --host=i686-w64-mingw32 --with-boost=$(pwd)/deps/mingw32/include LDFLAGS="-static -static-libgcc -static-libstdc++"'
+    - meson setup -D buildtype=release --cross-file scripts/windows-cross.ini --cross-file boost.ini build
-    - make -j$(nproc)
+    - meson compile -C build -v
-    - i686-w64-mingw32-strip src/dynare_m.exe
+  cache:
-    - mkdir -p bin
+    # This cache is shared between all branches, to save space
-    - mv src/dynare_m.exe bin
+    key: $CI_JOB_NAME
-    - mkdir -p $CI_COMMIT_SHORT_SHA/windows/32
+    paths:
-    - tar cfz $CI_COMMIT_SHORT_SHA/windows/32/preprocessor.tar.gz bin
+      - tarballs/
-    - cd $CI_COMMIT_SHORT_SHA/windows/32 && sha256sum preprocessor.tar.gz > sha256sum
  artifacts:
    paths:
-      - $CI_COMMIT_SHORT_SHA/windows/32/*
+      - build/src/dynare-preprocessor.exe
-    expire_in: 1 hour
-build_windows_64:
+build_macos_x86_64:
  stage: build
+  tags:
+    - macOS
  script:
-    - mkdir -p ~/tarballs
+    - arch -x86_64 meson setup -D buildtype=release --native-file scripts/homebrew-native-x86_64.ini build
-    - '[[ -f ~/tarballs/mingw-w64-x86_64-boost-$MINGW64_BOOST_VERSION-any.pkg.tar.xz ]] || wget $WGET_OPTIONS -P ~/tarballs http://repo.msys2.org/mingw/x86_64/mingw-w64-x86_64-boost-$MINGW64_BOOST_VERSION-any.pkg.tar.xz'
+    - arch -x86_64 meson compile -C build -v
-    - mkdir -p deps
-    - tar xf ~/tarballs/mingw-w64-x86_64-boost-$MINGW64_BOOST_VERSION-any.pkg.tar.xz --directory deps
-    - autoreconf -si
-    - './configure --host=x86_64-w64-mingw32 --with-boost=$(pwd)/deps/mingw64/include LDFLAGS="-static -static-libgcc -static-libstdc++"'
-    - make -j$(nproc)
-    - x86_64-w64-mingw32-strip src/dynare_m.exe
-    - mkdir -p bin
-    - mv src/dynare_m.exe bin
-    - mkdir -p $CI_COMMIT_SHORT_SHA/windows/64
-    - tar cfz $CI_COMMIT_SHORT_SHA/windows/64/preprocessor.tar.gz bin
-    - cd $CI_COMMIT_SHORT_SHA/windows/64 && sha256sum preprocessor.tar.gz > sha256sum
  artifacts:
    paths:
-      - $CI_COMMIT_SHORT_SHA/windows/64/*
+      - build/src/dynare-preprocessor
-    expire_in: 1 hour
-build_macOS:
+build_macos_arm64:
  stage: build
  tags:
    - macOS
  script:
-    - autoreconf -si
+    - export PATH="/opt/homebrew/bin:$PATH"
-    - './configure CXX=g++-9 CXXFLAGS=-static-libgcc'
+    - arch -arm64 meson setup -D buildtype=release --native-file scripts/homebrew-native-arm64.ini build
-    - make -j$(nproc)
+    - arch -arm64 meson compile -C build -v
-    - strip src/dynare_m
-    - mkdir -p bin
-    - mv src/dynare_m bin
-    - mkdir -p $CI_COMMIT_SHORT_SHA/macOS/64
-    - tar cfz $CI_COMMIT_SHORT_SHA/macOS/64/preprocessor.tar.gz bin
-    - cd $CI_COMMIT_SHORT_SHA/macOS/64 && sha256sum preprocessor.tar.gz > sha256sum
  artifacts:
    paths:
-      - $CI_COMMIT_SHORT_SHA/macOS/64/*
+      - build/src/dynare-preprocessor
-    expire_in: 1 hour
-aggregate_builds:
+test_clang_format:
-  stage: prepare
+  stage: test
-  dependencies:
-    - build_linux_32
-    - build_linux_64
-    - build_windows_32
-    - build_windows_64
-    - build_macOS
  script:
-    - linux32sha=$(cut -f 1 -d ' ' < $CI_COMMIT_SHORT_SHA/linux/32/sha256sum)
+    - meson setup build-clang-format
-    - linux64sha=$(cut -f 1 -d ' ' < $CI_COMMIT_SHORT_SHA/linux/64/sha256sum)
+    - ninja -C build-clang-format clang-format-check
-    - windows32sha=$(cut -f 1 -d ' ' < $CI_COMMIT_SHORT_SHA/windows/32/sha256sum)
+  needs: []
-    - windows64sha=$(cut -f 1 -d ' ' < $CI_COMMIT_SHORT_SHA/windows/64/sha256sum)
-    - macOS64sha=$(cut -f 1 -d ' ' < $CI_COMMIT_SHORT_SHA/macOS/64/sha256sum)
+test_clang_tidy:
-    - cd $CI_COMMIT_SHORT_SHA
+  stage: test
-    - echo 'PREPROCESSOR_VERSION = "'$CI_COMMIT_SHORT_SHA'"' > julia.conf
+  script:
-    - echo 'REMOTE_PATH = "https://www.dynare.org/preprocessor/'$CI_COMMIT_SHORT_SHA'"' >> julia.conf
+    # Hack needed for meson < 1.6.0 which only looks for unversioned clang-tidy
-    - echo -e "\n" >> julia.conf
+    - mkdir -p ~/.local/bin && ln -s /usr/bin/clang-tidy-19 ~/.local/bin/clang-tidy
-    - echo "download_info = Dict(" >> julia.conf
+    - export PATH="$HOME/.local/bin:$PATH"
-    - echo "    Linux(:i686, :glibc) => ("\"\$REMOTE_PATH/linux/32/preprocessor.tar.gz\"", "\"$linux32sha\"")," >> julia.conf
+    - meson setup build-clang-tidy
-    - echo "    Linux(:x86_64, :glibc) => ("\"\$REMOTE_PATH/linux/64/preprocessor.tar.gz\"", "\"$linux64sha\"")," >> julia.conf
+    # Generate Flex and Bison files
-    - echo "    Windows(:i686) => ("\"\$REMOTE_PATH/windows/32/preprocessor.tar.gz\"", "\"$windows32sha\"")," >> julia.conf
+    - meson compile -C build-clang-tidy
-    - echo "    Windows(:x86_64) => ("\"\$REMOTE_PATH/windows/64/preprocessor.tar.gz\"", "\"$windows64sha\"")," >> julia.conf
+    - ninja -C build-clang-tidy clang-tidy
-    - echo "    MacOS() => ("\"\$REMOTE_PATH/macOS/64/preprocessor.tar.gz\"", "\"$macOS64sha\"")," >> julia.conf
+  needs: []
-    - echo " )" >> julia.conf
+  when: manual
-  artifacts:
-    paths:
-      - $CI_COMMIT_SHORT_SHA/*/*/*
-      - $CI_COMMIT_SHORT_SHA/julia.conf
-    expire_in: 1 week
--- a/COPYING
+++ b/COPYING
                    GNU GENERAL PUBLIC LICENSE
                       Version 3, 29 June 2007
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.
@@ -645,7 +645,7 @@ the "copyright" line and a pointer to where the full notice is found.
    GNU General Public License for more details.
    You should have received a copy of the GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 Also add information on how to contact you by electronic and paper mail.
@@ -664,11 +664,11 @@ might be different; for a GUI interface, you would use an "about box".
  You should also get your employer (if you work as a programmer) or school,
 if any, to sign a "copyright disclaimer" for the program, if necessary.
 For more information on this, and how to apply and follow the GNU GPL, see
-<http://www.gnu.org/licenses/>.
+<https://www.gnu.org/licenses/>.
  The GNU General Public License does not permit incorporating your program
 into proprietary programs.  If your program is a subroutine library, you
 may consider it more useful to permit linking proprietary applications with
 the library.  If this is what you want to do, use the GNU Lesser General
 Public License instead of this License.  But first, please read
-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
--- a/Makefile.am
+++ b/Makefile.am
-SUBDIRS = src doc
-ACLOCAL_AMFLAGS = -I m4
-EXTRA_DIST = \
-	license.txt \
-	COPYING
-dist-hook:
-	rm -rf `find $(distdir) -name '.git*'`
--- a/README.md
+++ b/README.md
@@ -9,12 +9,9 @@
 The Dynare Preprocessor defines the Dynare model language. It takes in a `.mod`
 file, computes the derivatives of the model represented therein, and produces
-MATLAB/Octave, C, Julia, or JSON output.
+MATLAB/Octave, Julia, or JSON output.
-There is more to come here. For the moment, see the [Dynare
-repository](https://git.dynare.org/Dynare/dynare)
 # License
 Most of the source files are covered by the GNU General Public Licence version
-3 or later. There are some exceptions. See [license.txt](license.txt) for specifics.
+3 or later. There are some exceptions, see the respective file headers.
--- a/configure.ac
+++ b/configure.ac
-dnl Process this file with autoconf to produce a configure script.
-dnl Copyright © 2009-2019 Dynare Team
-dnl
-dnl This file is part of Dynare.
-dnl
-dnl Dynare is free software: you can redistribute it and/or modify
-dnl it under the terms of the GNU General Public License as published by
-dnl the Free Software Foundation, either version 3 of the License, or
-dnl (at your option) any later version.
-dnl
-dnl Dynare is distributed in the hope that it will be useful,
-dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
-dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-dnl GNU General Public License for more details.
-dnl
-dnl You should have received a copy of the GNU General Public License
-dnl along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
-AC_PREREQ([2.62])
-AC_INIT([dynare-preprocessor], [4.6-unstable])
-AC_CONFIG_AUX_DIR([build-aux])
-AC_CONFIG_SRCDIR([src/DynareMain.cc])
-AM_INIT_AUTOMAKE([1.11 -Wall -Wno-portability foreign no-dist-gzip dist-xz tar-pax])
-AC_PROG_CC
-AC_PROG_CXX
-AX_CXX_COMPILE_STDCXX_17
-AC_CANONICAL_HOST
-case ${host_os} in
-  *mingw32*)
-    # On Windows, we don't want dynamic linking
-    AM_LDFLAGS="-static"
-    AC_SUBST([AM_LDFLAGS])
-    ;;
-  *cygwin*)
-    AC_MSG_WARN([You are compiling for the Cygwin target. This means that the preprocessor will])
-    AC_MSG_WARN([not run from MATLAB unless you add the Cygwin DLL to the path.])
-    AC_MSG_WARN([This is probably not what you want. Consider using a MinGW cross-compiler.])
-    ;;
-esac
-# Use C++ for testing headers
-AC_LANG([C++])
-AM_CXXFLAGS="-Wall -Wno-parentheses -Wold-style-cast"
-AC_SUBST([AM_CXXFLAGS])
-# If default 'ar' is not available, try to find one with a host prefix (see ticket #145)
-AC_CHECK_PROGS([AR], [ar ${host_alias}-ar])
-AC_PROG_RANLIB
-AM_PROG_AR
-AM_PROG_LEX
-# Hack to get lex include dir, ticket #575
-AC_PATH_PROG([LEXPATH], [$LEX])
-AC_SUBST([LEXINC], [$(eval "echo $LEXPATH | sed 's|\(.*\)$LEX$|\1../include|'")])
-AC_CHECK_PROG([YACC], [bison], [bison])
-if test -z "$YACC"; then
-  unset YACC # AM_MISSING_PROG needs an unset variable: an empty variable won't do
-  AM_MISSING_PROG([YACC], [bison])
-fi
-# We need 1.36 because of unordered_{set,hash} used by Dynare++
-AX_BOOST_BASE([1.36], [], [AC_MSG_ERROR([Can't find Boost >= 1.36])])
-CPPFLAGS_SAVED="$CPPFLAGS"
-CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
-AC_CHECK_HEADERS([boost/graph/adjacency_list.hpp], [], [AC_MSG_ERROR([Can't find Boost Graph Library])])
-AC_CHECK_HEADERS([boost/algorithm/string/trim.hpp], [], [AC_MSG_ERROR([Can't find Boost String Library])])
-AC_CHECK_HEADERS([boost/algorithm/string/split.hpp], [], [AC_MSG_ERROR([Can't find Boost String Library])])
-CPPFLAGS="$CPPFLAGS_SAVED"
-# Don't use deprecated hash structures
-AC_DEFINE([BOOST_NO_HASH], [], [Don't use deprecated STL hash structures])
-# Check if internal documentation can be built
-AC_CHECK_PROG([DOXYGEN], [doxygen], [doxygen])
-AM_CONDITIONAL([HAVE_DOXYGEN], [test -n "$DOXYGEN"])
-# Check if user documentation can be built
-AC_ARG_ENABLE([doc], AS_HELP_STRING([--disable-doc], [disable compilation of documentation]), [], [enable_doc=yes])
-AM_CONDITIONAL([ENABLE_DOC], [test "$enable_doc" = yes])
-if test "$enable_doc" = yes; then
-  AC_CHECK_PROG([PDFLATEX], [pdflatex], [pdflatex], [no])
-  test "$PDFLATEX" = no && AC_MSG_ERROR([pdflatex cannot be found. If you want to skip the compilation of the documentation, pass the --disable-doc flag.])
-  AC_CHECK_PROG([BIBTEX], [bibtex], [bibtex], [no])
-  test "$BIBTEX" = no && AC_MSG_ERROR([bibtex cannot be found. If you want to skip the compilation of the documentation, pass the --disable-doc flag.])
-  AX_LATEX_CLASS([beamer], [ax_latex_have_beamer], [], [AC_MSG_ERROR([beamer cannot be found. If you want to skip the compilation of the documentation, pass the --disable-doc flag.])])
-fi
-AC_CONFIG_FILES([Makefile
-                 src/Makefile
-                 src/macro/Makefile
-                 doc/Makefile
-                 doc/preprocessor/Makefile
-                 doc/macroprocessor/Makefile
-])
-if test -n "$DOXYGEN"; then
-  BUILD_INTERNAL_DOC="yes"
-else
-  BUILD_INTERNAL_DOC="no (missing doxygen)"
-fi
-if test "$enable_doc" = yes; then
-  BUILD_DOC="yes"
-else
-  BUILD_DOC="no"
-fi
-AC_MSG_NOTICE([
-The Dynare Preprocessor is now configured to build...
-Binaries (with "make")
- Dynare preprocessor:                         yes
-PDF documentation (with "make pdf"):
- Preprocessor & Macroprocessor presentations: $BUILD_DOC
-HTML documentation (with "make html"):
- Dynare preprocessor internal doc:            $BUILD_INTERNAL_DOC
-])
-AC_OUTPUT
--- a/doc/Makefile.am
+++ b/doc/Makefile.am
-SUBDIRS = preprocessor macroprocessor
-EXTRA_DIST = logos
--- a/doc/logos/dlogo.png
+++ b/doc/logos/dlogo.png
--- a/doc/macroprocessor/Makefile.am
+++ b/doc/macroprocessor/Makefile.am
-if ENABLE_DOC
-pdf-local: macroprocessor.pdf
-endif
-SRC = macroprocessor.tex new-design.pdf
-EXTRA_DIST = $(SRC)
-macroprocessor.pdf: $(SRC)
-	$(PDFLATEX) macroprocessor
-	$(PDFLATEX) macroprocessor
-clean-local:
-	rm -f macroprocessor.pdf *.toc *.aux *.log *.nav *.snm *.vrb *.out *~
--- a/doc/macroprocessor/macroprocessor.tex
+++ b/doc/macroprocessor/macroprocessor.tex
--- a/doc/meson.build
+++ b/doc/meson.build
+latexmk_exe = find_program('latexmk', required : false, disabler : true)
+# We have to set TEXINPUTS because the current directory is not the source
+# directory when latexmk is invoked (and using the -cd option in combination
+# with -outdir/-auxdir does not work in all cases because @OUTDIR@ and
+# @PRIVATE_DIR@ can be relative paths)
+# Without the -g flag, latexmk remembers a previous build failure and will refuse
+# to recompile even if the error has been fixed in the TeX source
+latexmk_command = [ latexmk_exe, '-pdf', '-g', '-outdir=@OUTDIR@', '-auxdir=@PRIVATE_DIR@', '@INPUT@']
+# The \graphicspath{} command does not compute directories relative to TEXINPUTS,
+# so add these manually
+logos_dir = meson.current_source_dir() / 'logos'
+macroprocessor_pdf = custom_target('macroprocessor.pdf',
+                                   output : 'macroprocessor.pdf',
+                                   input : 'macroprocessor/macroprocessor.tex',
+                                   command : latexmk_command,
+                                   env : { 'TEXINPUTS': meson.current_source_dir()
+                                                        + '/macroprocessor:' + logos_dir + ':' },
+                                   depend_files : [ 'macroprocessor/new-design.pdf',
+                                                    'logos/dlogo.png' ],
+                                   build_by_default : false,
+                                   install : true,
+                                   install_dir : 'share/doc/dynare')
+preprocessor_pdf = custom_target('preprocessor.pdf',
+                                 output : 'preprocessor.pdf',
+                                 input : 'preprocessor/preprocessor.tex',
+                                 command : latexmk_command,
+                                 env : { 'TEXINPUTS': meson.current_source_dir() + '/preprocessor:'
+                                                      + logos_dir + ':' },
+                                 depend_files : [ 'preprocessor/expr.png',
+                                                  'preprocessor/expr-sharing.png',
+                                                  'preprocessor/json-preprocessor.png',
+                                                  'preprocessor/matrices.png',
+                                                  'preprocessor/overview.png', 'logos/dlogo.png' ],
+                                 build_by_default : false,
+                                 install : true,
+                                 install_dir : 'share/doc/dynare')
--- a/doc/preprocessor/Makefile.am
+++ b/doc/preprocessor/Makefile.am
-if ENABLE_DOC
-pdf-local: preprocessor.pdf
-endif
-SRC = preprocessor.tex expr.png expr-sharing.png matrices.png overview.png json-preprocessor.png
-EXTRA_DIST = $(SRC)
-preprocessor.pdf: $(SRC)
-	$(PDFLATEX) preprocessor
-	$(PDFLATEX) preprocessor
-clean-local:
-	rm -f *.pdf *.toc *.aux *.log *.nav *.snm *.vrb *.out *~
--- a/doc/preprocessor/preprocessor.tex
+++ b/doc/preprocessor/preprocessor.tex
--- a/license.txt
+++ b/license.txt
-Format: https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/
-Upstream-Name: Dynare-preprocessor
-Upstream-Contact: Dynare Team, whose members in 2019 are:
-                  Stéphane Adjemian <stephane.adjemian@univ-lemans.fr>
-                  Houtan Bastani <houtan@dynare.org>
-                  Michel Juillard <michel.juillard@mjui.fr>
-                  Frédéric Karamé <frederic.karame@univ-lemans.fr>
-                  Junior Maih <junior.maih@gmail.com>
-                  Ferhat Mihoubi <fmihoubi@univ-evry.fr>
-                  Johannes Pfeifer <jpfeifer@gmx.de>
-                  Marco Ratto <marco.ratto@ec.europa.eu>
-                  Sébastien Villemot <sebastien@dynare.org>
-Source: https://www.dynare.org
-Files: *
-Copyright: 1996-2019 Dynare Team
-License: GPL-3+
-Files: m4/ax_boost_base.m4
-       m4/ax_boost_system.m4
-       m4/ax_boost_filesystem.m4
-Copyright: 2008-2009 Thomas Porschberg <thomas@randspringer.de>
-           2009 Peter Adolphs
-           2008-2009 Michael Tindal
-           2008 Daniel Casimiro <dan.casimiro@gmail.com>
-           2009 Roman Rybalko <libtorrent@romanr.info>
-License: FSFAP
-Files: m4/ax_cxx_compile_stdcxx.m4
-       m4/ax_cxx_compile_stdcxx_17.m4
-Copyright: 2008 Benjamin Kosnik <bkoz@redhat.com>
-           2012 Zack Weinberg <zackw@panix.com>
-           2013 Roy Stogner <roystgnr@ices.utexas.edu>
-           2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
-           2015 Paul Norman <penorman@mac.com>
-           2015 Moritz Klammler <moritz@klammler.eu>
-           2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
-           2019 Enji Cooper <yaneurabeya@gmail.com>
-License: FSFAP
-Files: m4/ax_latex_class.m4 m4/ax_tex_test.m4
-Copyright: 2008 Boretti Mathieu <boretti@eig.unige.ch>
-           2009 Dynare Team
-License: LGPL-2.1+
-License: GPL-3+
- Dynare is free software: you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
- .
- Dynare is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
- .
- You should have received a copy of the GNU General Public License
- along with Dynare.  If not, see <http://www.gnu.org/licenses/>.
-License: GPL-3+ with Autoconf exception
- This program is free software: you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation, either version 3 of the License, or (at your
- option) any later version.
- .
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
- Public License for more details.
- .
- You should have received a copy of the GNU General Public License along
- with this program. If not, see <http://www.gnu.org/licenses/>.
- .
- As a special exception, the respective Autoconf Macro's copyright owner
- gives unlimited permission to copy, distribute and modify the configure
- scripts that are the output of Autoconf when processing the Macro. You
- need not follow the terms of the GNU General Public License when using
- or distributing such scripts, even though portions of the text of the
- Macro appear in them. The GNU General Public License (GPL) does govern
- all other use of the material that constitutes the Autoconf Macro.
- .
- This special exception to the GPL applies to versions of the Autoconf
- Macro released by the Autoconf Archive. When you make and distribute a
- modified version of the Autoconf Macro, you may extend this special
- exception to the GPL to apply to your modified version as well.
-License: LGPL-2.1+
- This library is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or (at
- your option) any later version.
- .
- This library is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
- General Public License for more details.
- .
- You should have received a copy of the GNU Lesser General Public License
- along with this library. If not, see <http://www.gnu.org/licenses/>.
-License: LGPL-3+
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation, either version 3 of the License, or
- (at your option) any later version.
- .
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU Lesser General Public License for more details.
- .
- You should have received a copy of the GNU Lesser General Public License
- along with this program.  If not, see <http://www.gnu.org/licenses/>.
-License: FSFAP
- 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.
--- a/m4/ax_boost_base.m4
+++ b/m4/ax_boost_base.m4
-# ===========================================================================
-#      https://www.gnu.org/software/autoconf-archive/ax_boost_base.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-#   AX_BOOST_BASE([MINIMUM-VERSION], [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
-#
-# DESCRIPTION
-#
-#   Test for the Boost C++ libraries of a particular version (or newer)
-#
-#   If no path to the installed boost library is given the macro searchs
-#   under /usr, /usr/local, /opt and /opt/local and evaluates the
-#   $BOOST_ROOT environment variable. Further documentation is available at
-#   <http://randspringer.de/boost/index.html>.
-#
-#   This macro calls:
-#
-#     AC_SUBST(BOOST_CPPFLAGS) / AC_SUBST(BOOST_LDFLAGS)
-#
-#   And sets:
-#
-#     HAVE_BOOST
-#
-# LICENSE
-#
-#   Copyright (c) 2008 Thomas Porschberg <thomas@randspringer.de>
-#   Copyright (c) 2009 Peter Adolphs
-#
-#   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 43
-# example boost program (need to pass version)
-m4_define([_AX_BOOST_BASE_PROGRAM],
-          [AC_LANG_PROGRAM([[
-#include <boost/version.hpp>
-]],[[
-(void) ((void)sizeof(char[1 - 2*!!((BOOST_VERSION) < ($1))]));
-]])])
-AC_DEFUN([AX_BOOST_BASE],
-[
-AC_ARG_WITH([boost],
-  [AS_HELP_STRING([--with-boost@<:@=ARG@:>@],
-    [use Boost library from a standard location (ARG=yes),
-     from the specified location (ARG=<path>),
-     or disable it (ARG=no)
-     @<:@ARG=yes@:>@ ])],
-    [
-     AS_CASE([$withval],
-       [no],[want_boost="no";_AX_BOOST_BASE_boost_path=""],
-       [yes],[want_boost="yes";_AX_BOOST_BASE_boost_path=""],
-       [want_boost="yes";_AX_BOOST_BASE_boost_path="$withval"])
-    ],
-    [want_boost="yes"])
-AC_ARG_WITH([boost-libdir],
-  [AS_HELP_STRING([--with-boost-libdir=LIB_DIR],
-    [Force given directory for boost libraries.
-     Note that this will override library path detection,
-     so use this parameter only if default library detection fails
-     and you know exactly where your boost libraries are located.])],
-  [
-   AS_IF([test -d "$withval"],
-         [_AX_BOOST_BASE_boost_lib_path="$withval"],
-    [AC_MSG_ERROR([--with-boost-libdir expected directory name])])
-  ],
-  [_AX_BOOST_BASE_boost_lib_path=""])
-BOOST_LDFLAGS=""
-BOOST_CPPFLAGS=""
-AS_IF([test "x$want_boost" = "xyes"],
-      [_AX_BOOST_BASE_RUNDETECT([$1],[$2],[$3])])
-AC_SUBST(BOOST_CPPFLAGS)
-AC_SUBST(BOOST_LDFLAGS)
-])
-# convert a version string in $2 to numeric and affect to polymorphic var $1
-AC_DEFUN([_AX_BOOST_BASE_TONUMERICVERSION],[
-  AS_IF([test "x$2" = "x"],[_AX_BOOST_BASE_TONUMERICVERSION_req="1.20.0"],[_AX_BOOST_BASE_TONUMERICVERSION_req="$2"])
-  _AX_BOOST_BASE_TONUMERICVERSION_req_shorten=`expr $_AX_BOOST_BASE_TONUMERICVERSION_req : '\([[0-9]]*\.[[0-9]]*\)'`
-  _AX_BOOST_BASE_TONUMERICVERSION_req_major=`expr $_AX_BOOST_BASE_TONUMERICVERSION_req : '\([[0-9]]*\)'`
-  AS_IF([test "x$_AX_BOOST_BASE_TONUMERICVERSION_req_major" = "x"],
-        [AC_MSG_ERROR([You should at least specify libboost major version])])
-  _AX_BOOST_BASE_TONUMERICVERSION_req_minor=`expr $_AX_BOOST_BASE_TONUMERICVERSION_req : '[[0-9]]*\.\([[0-9]]*\)'`
-  AS_IF([test "x$_AX_BOOST_BASE_TONUMERICVERSION_req_minor" = "x"],
-        [_AX_BOOST_BASE_TONUMERICVERSION_req_minor="0"])
-  _AX_BOOST_BASE_TONUMERICVERSION_req_sub_minor=`expr $_AX_BOOST_BASE_TONUMERICVERSION_req : '[[0-9]]*\.[[0-9]]*\.\([[0-9]]*\)'`
-  AS_IF([test "X$_AX_BOOST_BASE_TONUMERICVERSION_req_sub_minor" = "X"],
-        [_AX_BOOST_BASE_TONUMERICVERSION_req_sub_minor="0"])
-  _AX_BOOST_BASE_TONUMERICVERSION_RET=`expr $_AX_BOOST_BASE_TONUMERICVERSION_req_major \* 100000 \+  $_AX_BOOST_BASE_TONUMERICVERSION_req_minor \* 100 \+ $_AX_BOOST_BASE_TONUMERICVERSION_req_sub_minor`
-  AS_VAR_SET($1,$_AX_BOOST_BASE_TONUMERICVERSION_RET)
-])
-dnl Run the detection of boost should be run only if $want_boost
-AC_DEFUN([_AX_BOOST_BASE_RUNDETECT],[
-    _AX_BOOST_BASE_TONUMERICVERSION(WANT_BOOST_VERSION,[$1])
-    succeeded=no
-    AC_REQUIRE([AC_CANONICAL_HOST])
-    dnl On 64-bit systems check for system libraries in both lib64 and lib.
-    dnl The former is specified by FHS, but e.g. Debian does not adhere to
-    dnl this (as it rises problems for generic multi-arch support).
-    dnl The last entry in the list is chosen by default when no libraries
-    dnl are found, e.g. when only header-only libraries are installed!
-    AS_CASE([${host_cpu}],
-      [x86_64],[libsubdirs="lib64 libx32 lib lib64"],
-      [ppc64|s390x|sparc64|aarch64|ppc64le],[libsubdirs="lib64 lib lib64"],
-      [libsubdirs="lib"]
-    )
-    dnl allow for real multi-arch paths e.g. /usr/lib/x86_64-linux-gnu. Give
-    dnl them priority over the other paths since, if libs are found there, they
-    dnl are almost assuredly the ones desired.
-    AS_CASE([${host_cpu}],
-      [i?86],[multiarch_libsubdir="lib/i386-${host_os}"],
-      [multiarch_libsubdir="lib/${host_cpu}-${host_os}"]
-    )
-    dnl first we check the system location for boost libraries
-    dnl this location ist chosen if boost libraries are installed with the --layout=system option
-    dnl or if you install boost with RPM
-    AS_IF([test "x$_AX_BOOST_BASE_boost_path" != "x"],[
-        AC_MSG_CHECKING([for boostlib >= $1 ($WANT_BOOST_VERSION) includes in "$_AX_BOOST_BASE_boost_path/include"])
-         AS_IF([test -d "$_AX_BOOST_BASE_boost_path/include" && test -r "$_AX_BOOST_BASE_boost_path/include"],[
-           AC_MSG_RESULT([yes])
-           BOOST_CPPFLAGS="-I$_AX_BOOST_BASE_boost_path/include"
-           for _AX_BOOST_BASE_boost_path_tmp in $multiarch_libsubdir $libsubdirs; do
-                AC_MSG_CHECKING([for boostlib >= $1 ($WANT_BOOST_VERSION) lib path in "$_AX_BOOST_BASE_boost_path/$_AX_BOOST_BASE_boost_path_tmp"])
-                AS_IF([test -d "$_AX_BOOST_BASE_boost_path/$_AX_BOOST_BASE_boost_path_tmp" && test -r "$_AX_BOOST_BASE_boost_path/$_AX_BOOST_BASE_boost_path_tmp" ],[
-                        AC_MSG_RESULT([yes])
-                        BOOST_LDFLAGS="-L$_AX_BOOST_BASE_boost_path/$_AX_BOOST_BASE_boost_path_tmp";
-                        break;
-                ],
-      [AC_MSG_RESULT([no])])
-           done],[
-      AC_MSG_RESULT([no])])
-    ],[
-        if test X"$cross_compiling" = Xyes; then
-            search_libsubdirs=$multiarch_libsubdir
-        else
-            search_libsubdirs="$multiarch_libsubdir $libsubdirs"
-        fi
-        for _AX_BOOST_BASE_boost_path_tmp in /usr /usr/local /opt /opt/local ; do
-            if test -d "$_AX_BOOST_BASE_boost_path_tmp/include/boost" && test -r "$_AX_BOOST_BASE_boost_path_tmp/include/boost" ; then
-                for libsubdir in $search_libsubdirs ; do
-                    if ls "$_AX_BOOST_BASE_boost_path_tmp/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
-                done
-                BOOST_LDFLAGS="-L$_AX_BOOST_BASE_boost_path_tmp/$libsubdir"
-                BOOST_CPPFLAGS="-I$_AX_BOOST_BASE_boost_path_tmp/include"
-                break;
-            fi
-        done
-    ])
-    dnl overwrite ld flags if we have required special directory with
-    dnl --with-boost-libdir parameter
-    AS_IF([test "x$_AX_BOOST_BASE_boost_lib_path" != "x"],
-          [BOOST_LDFLAGS="-L$_AX_BOOST_BASE_boost_lib_path"])
-    AC_MSG_CHECKING([for boostlib >= $1 ($WANT_BOOST_VERSION)])
-    CPPFLAGS_SAVED="$CPPFLAGS"
-    CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
-    export CPPFLAGS
-    LDFLAGS_SAVED="$LDFLAGS"
-    LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
-    export LDFLAGS
-    AC_REQUIRE([AC_PROG_CXX])
-    AC_LANG_PUSH(C++)
-        AC_COMPILE_IFELSE([_AX_BOOST_BASE_PROGRAM($WANT_BOOST_VERSION)],[
-        AC_MSG_RESULT(yes)
-    succeeded=yes
-    found_system=yes
-        ],[
-        ])
-    AC_LANG_POP([C++])
-    dnl if we found no boost with system layout we search for boost libraries
-    dnl built and installed without the --layout=system option or for a staged(not installed) version
-    if test "x$succeeded" != "xyes" ; then
-        CPPFLAGS="$CPPFLAGS_SAVED"
-        LDFLAGS="$LDFLAGS_SAVED"
-        BOOST_CPPFLAGS=
-        if test -z "$_AX_BOOST_BASE_boost_lib_path" ; then
-            BOOST_LDFLAGS=
-        fi
-        _version=0
-        if test -n "$_AX_BOOST_BASE_boost_path" ; then
-            if test -d "$_AX_BOOST_BASE_boost_path" && test -r "$_AX_BOOST_BASE_boost_path"; then
-                for i in `ls -d $_AX_BOOST_BASE_boost_path/include/boost-* 2>/dev/null`; do
-                    _version_tmp=`echo $i | sed "s#$_AX_BOOST_BASE_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
-                    V_CHECK=`expr $_version_tmp \> $_version`
-                    if test "x$V_CHECK" = "x1" ; then
-                        _version=$_version_tmp
-                    fi
-                    VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
-                    BOOST_CPPFLAGS="-I$_AX_BOOST_BASE_boost_path/include/boost-$VERSION_UNDERSCORE"
-                done
-                dnl if nothing found search for layout used in Windows distributions
-                if test -z "$BOOST_CPPFLAGS"; then
-                    if test -d "$_AX_BOOST_BASE_boost_path/boost" && test -r "$_AX_BOOST_BASE_boost_path/boost"; then
-                        BOOST_CPPFLAGS="-I$_AX_BOOST_BASE_boost_path"
-                    fi
-                fi
-                dnl if we found something and BOOST_LDFLAGS was unset before
-                dnl (because "$_AX_BOOST_BASE_boost_lib_path" = ""), set it here.
-                if test -n "$BOOST_CPPFLAGS" && test -z "$BOOST_LDFLAGS"; then
-                    for libsubdir in $libsubdirs ; do
-                        if ls "$_AX_BOOST_BASE_boost_path/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
-                    done
-                    BOOST_LDFLAGS="-L$_AX_BOOST_BASE_boost_path/$libsubdir"
-                fi
-            fi
-        else
-            if test "x$cross_compiling" != "xyes" ; then
-                for _AX_BOOST_BASE_boost_path in /usr /usr/local /opt /opt/local ; do
-                    if test -d "$_AX_BOOST_BASE_boost_path" && test -r "$_AX_BOOST_BASE_boost_path" ; then
-                        for i in `ls -d $_AX_BOOST_BASE_boost_path/include/boost-* 2>/dev/null`; do
-                            _version_tmp=`echo $i | sed "s#$_AX_BOOST_BASE_boost_path##" | sed 's/\/include\/boost-//' | sed 's/_/./'`
-                            V_CHECK=`expr $_version_tmp \> $_version`
-                            if test "x$V_CHECK" = "x1" ; then
-                                _version=$_version_tmp
-                                best_path=$_AX_BOOST_BASE_boost_path
-                            fi
-                        done
-                    fi
-                done
-                VERSION_UNDERSCORE=`echo $_version | sed 's/\./_/'`
-                BOOST_CPPFLAGS="-I$best_path/include/boost-$VERSION_UNDERSCORE"
-                if test -z "$_AX_BOOST_BASE_boost_lib_path" ; then
-                    for libsubdir in $libsubdirs ; do
-                        if ls "$best_path/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
-                    done
-                    BOOST_LDFLAGS="-L$best_path/$libsubdir"
-                fi
-            fi
-            if test -n "$BOOST_ROOT" ; then
-                for libsubdir in $libsubdirs ; do
-                    if ls "$BOOST_ROOT/stage/$libsubdir/libboost_"* >/dev/null 2>&1 ; then break; fi
-                done
-                if test -d "$BOOST_ROOT" && test -r "$BOOST_ROOT" && test -d "$BOOST_ROOT/stage/$libsubdir" && test -r "$BOOST_ROOT/stage/$libsubdir"; then
-                    version_dir=`expr //$BOOST_ROOT : '.*/\(.*\)'`
-                    stage_version=`echo $version_dir | sed 's/boost_//' | sed 's/_/./g'`
-                        stage_version_shorten=`expr $stage_version : '\([[0-9]]*\.[[0-9]]*\)'`
-                    V_CHECK=`expr $stage_version_shorten \>\= $_version`
-                    if test "x$V_CHECK" = "x1" && test -z "$_AX_BOOST_BASE_boost_lib_path" ; then
-                        AC_MSG_NOTICE(We will use a staged boost library from $BOOST_ROOT)
-                        BOOST_CPPFLAGS="-I$BOOST_ROOT"
-                        BOOST_LDFLAGS="-L$BOOST_ROOT/stage/$libsubdir"
-                    fi
-                fi
-            fi
-        fi
-        CPPFLAGS="$CPPFLAGS $BOOST_CPPFLAGS"
-        export CPPFLAGS
-        LDFLAGS="$LDFLAGS $BOOST_LDFLAGS"
-        export LDFLAGS
-        AC_LANG_PUSH(C++)
-            AC_COMPILE_IFELSE([_AX_BOOST_BASE_PROGRAM($WANT_BOOST_VERSION)],[
-            AC_MSG_RESULT(yes)
-        succeeded=yes
-        found_system=yes
-            ],[
-            ])
-        AC_LANG_POP([C++])
-    fi
-    if test "x$succeeded" != "xyes" ; then
-        if test "x$_version" = "x0" ; then
-            AC_MSG_NOTICE([[We could not detect the boost libraries (version $1 or higher). If you have a staged boost library (still not installed) please specify \$BOOST_ROOT in your environment and do not give a PATH to --with-boost option.  If you are sure you have boost installed, then check your version number looking in <boost/version.hpp>. See http://randspringer.de/boost for more documentation.]])
-        else
-            AC_MSG_NOTICE([Your boost libraries seems to old (version $_version).])
-        fi
-        # execute ACTION-IF-NOT-FOUND (if present):
-        ifelse([$3], , :, [$3])
-    else
-        AC_DEFINE(HAVE_BOOST,,[define if the Boost library is available])
-        # execute ACTION-IF-FOUND (if present):
-        ifelse([$2], , :, [$2])
-    fi
-    CPPFLAGS="$CPPFLAGS_SAVED"
-    LDFLAGS="$LDFLAGS_SAVED"
-])
--- a/m4/ax_cxx_compile_stdcxx.m4
+++ b/m4/ax_cxx_compile_stdcxx.m4
-# ===========================================================================
-#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-#   AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
-#
-# DESCRIPTION
-#
-#   Check for baseline language coverage in the compiler for the specified
-#   version of the C++ standard.  If necessary, add switches to CXX and
-#   CXXCPP to enable support.  VERSION may be '11' (for the C++11 standard)
-#   or '14' (for the C++14 standard).
-#
-#   The second argument, if specified, indicates whether you insist on an
-#   extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
-#   -std=c++11).  If neither is specified, you get whatever works, with
-#   preference for an extended mode.
-#
-#   The third argument, if specified 'mandatory' or if left unspecified,
-#   indicates that baseline support for the specified C++ standard is
-#   required and that the macro should error out if no mode with that
-#   support is found.  If specified 'optional', then configuration proceeds
-#   regardless, after defining HAVE_CXX${VERSION} if and only if a
-#   supporting mode is found.
-#
-# LICENSE
-#
-#   Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
-#   Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
-#   Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
-#   Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
-#   Copyright (c) 2015 Paul Norman <penorman@mac.com>
-#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
-#   Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
-#   Copyright (c) 2019 Enji Cooper <yaneurabeya@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
-dnl  This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
-dnl  (serial version number 13).
-AC_DEFUN([AX_CXX_COMPILE_STDCXX], [dnl
-  m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
-        [$1], [14], [ax_cxx_compile_alternatives="14 1y"],
-        [$1], [17], [ax_cxx_compile_alternatives="17 1z"],
-        [m4_fatal([invalid first argument `$1' to AX_CXX_COMPILE_STDCXX])])dnl
-  m4_if([$2], [], [],
-        [$2], [ext], [],
-        [$2], [noext], [],
-        [m4_fatal([invalid second argument `$2' to AX_CXX_COMPILE_STDCXX])])dnl
-  m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
-        [$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
-        [$3], [optional], [ax_cxx_compile_cxx$1_required=false],
-        [m4_fatal([invalid third argument `$3' to AX_CXX_COMPILE_STDCXX])])
-  AC_LANG_PUSH([C++])dnl
-  ac_success=no
-  m4_if([$2], [noext], [], [dnl
-  if test x$ac_success = xno; then
-    for alternative in ${ax_cxx_compile_alternatives}; do
-      switch="-std=gnu++${alternative}"
-      cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
-      AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
-                     $cachevar,
-        [ac_save_CXX="$CXX"
-         CXX="$CXX $switch"
-         AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
-          [eval $cachevar=yes],
-          [eval $cachevar=no])
-         CXX="$ac_save_CXX"])
-      if eval test x\$$cachevar = xyes; then
-        CXX="$CXX $switch"
-        if test -n "$CXXCPP" ; then
-          CXXCPP="$CXXCPP $switch"
-        fi
-        ac_success=yes
-        break
-      fi
-    done
-  fi])
-  m4_if([$2], [ext], [], [dnl
-  if test x$ac_success = xno; then
-    dnl HP's aCC needs +std=c++11 according to:
-    dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
-    dnl Cray's crayCC needs "-h std=c++11"
-    for alternative in ${ax_cxx_compile_alternatives}; do
-      for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
-        cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
-        AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
-                       $cachevar,
-          [ac_save_CXX="$CXX"
-           CXX="$CXX $switch"
-           AC_COMPILE_IFELSE([AC_LANG_SOURCE([_AX_CXX_COMPILE_STDCXX_testbody_$1])],
-            [eval $cachevar=yes],
-            [eval $cachevar=no])
-           CXX="$ac_save_CXX"])
-        if eval test x\$$cachevar = xyes; then
-          CXX="$CXX $switch"
-          if test -n "$CXXCPP" ; then
-            CXXCPP="$CXXCPP $switch"
-          fi
-          ac_success=yes
-          break
-        fi
-      done
-      if test x$ac_success = xyes; then
-        break
-      fi
-    done
-  fi])
-  AC_LANG_POP([C++])
-  if test x$ax_cxx_compile_cxx$1_required = xtrue; then
-    if test x$ac_success = xno; then
-      AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
-    fi
-  fi
-  if test x$ac_success = xno; then
-    HAVE_CXX$1=0
-    AC_MSG_NOTICE([No compiler with C++$1 support was found])
-  else
-    HAVE_CXX$1=1
-    AC_DEFINE(HAVE_CXX$1,1,
-              [define if the compiler supports basic C++$1 syntax])
-  fi
-  AC_SUBST(HAVE_CXX$1)
-])
-dnl  Test body for checking C++11 support
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_11],
-  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
-)
-dnl  Test body for checking C++14 support
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_14],
-  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
-  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
-)
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_17],
-  _AX_CXX_COMPILE_STDCXX_testbody_new_in_11
-  _AX_CXX_COMPILE_STDCXX_testbody_new_in_14
-  _AX_CXX_COMPILE_STDCXX_testbody_new_in_17
-)
-dnl  Tests for new features in C++11
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
-// If the compiler admits that it is not ready for C++11, why torture it?
-// Hopefully, this will speed up the test.
-#ifndef __cplusplus
-#error "This is not a C++ compiler"
-#elif __cplusplus < 201103L
-#error "This is not a C++11 compiler"
-#else
-namespace cxx11
-{
-  namespace test_static_assert
-  {
-    template <typename T>
-    struct check
-    {
-      static_assert(sizeof(int) <= sizeof(T), "not big enough");
-    };
-  }
-  namespace test_final_override
-  {
-    struct Base
-    {
-      virtual ~Base() {}
-      virtual void f() {}
-    };
-    struct Derived : public Base
-    {
-      virtual ~Derived() override {}
-      virtual void f() override {}
-    };
-  }
-  namespace test_double_right_angle_brackets
-  {
-    template < typename T >
-    struct check {};
-    typedef check<void> single_type;
-    typedef check<check<void>> double_type;
-    typedef check<check<check<void>>> triple_type;
-    typedef check<check<check<check<void>>>> quadruple_type;
-  }
-  namespace test_decltype
-  {
-    int
-    f()
-    {
-      int a = 1;
-      decltype(a) b = 2;
-      return a + b;
-    }
-  }
-  namespace test_type_deduction
-  {
-    template < typename T1, typename T2 >
-    struct is_same
-    {
-      static const bool value = false;
-    };
-    template < typename T >
-    struct is_same<T, T>
-    {
-      static const bool value = true;
-    };
-    template < typename T1, typename T2 >
-    auto
-    add(T1 a1, T2 a2) -> decltype(a1 + a2)
-    {
-      return a1 + a2;
-    }
-    int
-    test(const int c, volatile int v)
-    {
-      static_assert(is_same<int, decltype(0)>::value == true, "");
-      static_assert(is_same<int, decltype(c)>::value == false, "");
-      static_assert(is_same<int, decltype(v)>::value == false, "");
-      auto ac = c;
-      auto av = v;
-      auto sumi = ac + av + 'x';
-      auto sumf = ac + av + 1.0;
-      static_assert(is_same<int, decltype(ac)>::value == true, "");
-      static_assert(is_same<int, decltype(av)>::value == true, "");
-      static_assert(is_same<int, decltype(sumi)>::value == true, "");
-      static_assert(is_same<int, decltype(sumf)>::value == false, "");
-      static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
-      return (sumf > 0.0) ? sumi : add(c, v);
-    }
-  }
-  namespace test_noexcept
-  {
-    int f() { return 0; }
-    int g() noexcept { return 0; }
-    static_assert(noexcept(f()) == false, "");
-    static_assert(noexcept(g()) == true, "");
-  }
-  namespace test_constexpr
-  {
-    template < typename CharT >
-    unsigned long constexpr
-    strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
-    {
-      return *s ? strlen_c_r(s + 1, acc + 1) : acc;
-    }
-    template < typename CharT >
-    unsigned long constexpr
-    strlen_c(const CharT *const s) noexcept
-    {
-      return strlen_c_r(s, 0UL);
-    }
-    static_assert(strlen_c("") == 0UL, "");
-    static_assert(strlen_c("1") == 1UL, "");
-    static_assert(strlen_c("example") == 7UL, "");
-    static_assert(strlen_c("another\0example") == 7UL, "");
-  }
-  namespace test_rvalue_references
-  {
-    template < int N >
-    struct answer
-    {
-      static constexpr int value = N;
-    };
-    answer<1> f(int&)       { return answer<1>(); }
-    answer<2> f(const int&) { return answer<2>(); }
-    answer<3> f(int&&)      { return answer<3>(); }
-    void
-    test()
-    {
-      int i = 0;
-      const int c = 0;
-      static_assert(decltype(f(i))::value == 1, "");
-      static_assert(decltype(f(c))::value == 2, "");
-      static_assert(decltype(f(0))::value == 3, "");
-    }
-  }
-  namespace test_uniform_initialization
-  {
-    struct test
-    {
-      static const int zero {};
-      static const int one {1};
-    };
-    static_assert(test::zero == 0, "");
-    static_assert(test::one == 1, "");
-  }
-  namespace test_lambdas
-  {
-    void
-    test1()
-    {
-      auto lambda1 = [](){};
-      auto lambda2 = lambda1;
-      lambda1();
-      lambda2();
-    }
-    int
-    test2()
-    {
-      auto a = [](int i, int j){ return i + j; }(1, 2);
-      auto b = []() -> int { return '0'; }();
-      auto c = [=](){ return a + b; }();
-      auto d = [&](){ return c; }();
-      auto e = [a, &b](int x) mutable {
-        const auto identity = [](int y){ return y; };
-        for (auto i = 0; i < a; ++i)
-          a += b--;
-        return x + identity(a + b);
-      }(0);
-      return a + b + c + d + e;
-    }
-    int
-    test3()
-    {
-      const auto nullary = [](){ return 0; };
-      const auto unary = [](int x){ return x; };
-      using nullary_t = decltype(nullary);
-      using unary_t = decltype(unary);
-      const auto higher1st = [](nullary_t f){ return f(); };
-      const auto higher2nd = [unary](nullary_t f1){
-        return [unary, f1](unary_t f2){ return f2(unary(f1())); };
-      };
-      return higher1st(nullary) + higher2nd(nullary)(unary);
-    }
-  }
-  namespace test_variadic_templates
-  {
-    template <int...>
-    struct sum;
-    template <int N0, int... N1toN>
-    struct sum<N0, N1toN...>
-    {
-      static constexpr auto value = N0 + sum<N1toN...>::value;
-    };
-    template <>
-    struct sum<>
-    {
-      static constexpr auto value = 0;
-    };
-    static_assert(sum<>::value == 0, "");
-    static_assert(sum<1>::value == 1, "");
-    static_assert(sum<23>::value == 23, "");
-    static_assert(sum<1, 2>::value == 3, "");
-    static_assert(sum<5, 5, 11>::value == 21, "");
-    static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
-  }
-  // http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
-  // Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
-  // because of this.
-  namespace test_template_alias_sfinae
-  {
-    struct foo {};
-    template<typename T>
-    using member = typename T::member_type;
-    template<typename T>
-    void func(...) {}
-    template<typename T>
-    void func(member<T>*) {}
-    void test();
-    void test() { func<foo>(0); }
-  }
-}  // namespace cxx11
-#endif  // __cplusplus >= 201103L
-]])
-dnl  Tests for new features in C++14
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
-// If the compiler admits that it is not ready for C++14, why torture it?
-// Hopefully, this will speed up the test.
-#ifndef __cplusplus
-#error "This is not a C++ compiler"
-#elif __cplusplus < 201402L
-#error "This is not a C++14 compiler"
-#else
-namespace cxx14
-{
-  namespace test_polymorphic_lambdas
-  {
-    int
-    test()
-    {
-      const auto lambda = [](auto&&... args){
-        const auto istiny = [](auto x){
-          return (sizeof(x) == 1UL) ? 1 : 0;
-        };
-        const int aretiny[] = { istiny(args)... };
-        return aretiny[0];
-      };
-      return lambda(1, 1L, 1.0f, '1');
-    }
-  }
-  namespace test_binary_literals
-  {
-    constexpr auto ivii = 0b0000000000101010;
-    static_assert(ivii == 42, "wrong value");
-  }
-  namespace test_generalized_constexpr
-  {
-    template < typename CharT >
-    constexpr unsigned long
-    strlen_c(const CharT *const s) noexcept
-    {
-      auto length = 0UL;
-      for (auto p = s; *p; ++p)
-        ++length;
-      return length;
-    }
-    static_assert(strlen_c("") == 0UL, "");
-    static_assert(strlen_c("x") == 1UL, "");
-    static_assert(strlen_c("test") == 4UL, "");
-    static_assert(strlen_c("another\0test") == 7UL, "");
-  }
-  namespace test_lambda_init_capture
-  {
-    int
-    test()
-    {
-      auto x = 0;
-      const auto lambda1 = [a = x](int b){ return a + b; };
-      const auto lambda2 = [a = lambda1(x)](){ return a; };
-      return lambda2();
-    }
-  }
-  namespace test_digit_separators
-  {
-    constexpr auto ten_million = 100'000'000;
-    static_assert(ten_million == 100000000, "");
-  }
-  namespace test_return_type_deduction
-  {
-    auto f(int& x) { return x; }
-    decltype(auto) g(int& x) { return x; }
-    template < typename T1, typename T2 >
-    struct is_same
-    {
-      static constexpr auto value = false;
-    };
-    template < typename T >
-    struct is_same<T, T>
-    {
-      static constexpr auto value = true;
-    };
-    int
-    test()
-    {
-      auto x = 0;
-      static_assert(is_same<int, decltype(f(x))>::value, "");
-      static_assert(is_same<int&, decltype(g(x))>::value, "");
-      return x;
-    }
-  }
-}  // namespace cxx14
-#endif  // __cplusplus >= 201402L
-]])
-dnl  Tests for new features in C++17
-m4_define([_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
-// If the compiler admits that it is not ready for C++17, why torture it?
-// Hopefully, this will speed up the test.
-#ifndef __cplusplus
-#error "This is not a C++ compiler"
-#elif __cplusplus < 201703L
-#error "This is not a C++17 compiler"
-#else
-#include <initializer_list>
-#include <utility>
-#include <type_traits>
-namespace cxx17
-{
-  namespace test_constexpr_lambdas
-  {
-    constexpr int foo = [](){return 42;}();
-  }
-  namespace test::nested_namespace::definitions
-  {
-  }
-  namespace test_fold_expression
-  {
-    template<typename... Args>
-    int multiply(Args... args)
-    {
-      return (args * ... * 1);
-    }
-    template<typename... Args>
-    bool all(Args... args)
-    {
-      return (args && ...);
-    }
-  }
-  namespace test_extended_static_assert
-  {
-    static_assert (true);
-  }
-  namespace test_auto_brace_init_list
-  {
-    auto foo = {5};
-    auto bar {5};
-    static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value);
-    static_assert(std::is_same<int, decltype(bar)>::value);
-  }
-  namespace test_typename_in_template_template_parameter
-  {
-    template<template<typename> typename X> struct D;
-  }
-  namespace test_fallthrough_nodiscard_maybe_unused_attributes
-  {
-    int f1()
-    {
-      return 42;
-    }
-    [[nodiscard]] int f2()
-    {
-      [[maybe_unused]] auto unused = f1();
-      switch (f1())
-      {
-      case 17:
-        f1();
-        [[fallthrough]];
-      case 42:
-        f1();
-      }
-      return f1();
-    }
-  }
-  namespace test_extended_aggregate_initialization
-  {
-    struct base1
-    {
-      int b1, b2 = 42;
-    };
-    struct base2
-    {
-      base2() {
-        b3 = 42;
-      }
-      int b3;
-    };
-    struct derived : base1, base2
-    {
-        int d;
-    };
-    derived d1 {{1, 2}, {}, 4};  // full initialization
-    derived d2 {{}, {}, 4};      // value-initialized bases
-  }
-  namespace test_general_range_based_for_loop
-  {
-    struct iter
-    {
-      int i;
-      int& operator* ()
-      {
-        return i;
-      }
-      const int& operator* () const
-      {
-        return i;
-      }
-      iter& operator++()
-      {
-        ++i;
-        return *this;
-      }
-    };
-    struct sentinel
-    {
-      int i;
-    };
-    bool operator== (const iter& i, const sentinel& s)
-    {
-      return i.i == s.i;
-    }
-    bool operator!= (const iter& i, const sentinel& s)
-    {
-      return !(i == s);
-    }
-    struct range
-    {
-      iter begin() const
-      {
-        return {0};
-      }
-      sentinel end() const
-      {
-        return {5};
-      }
-    };
-    void f()
-    {
-      range r {};
-      for (auto i : r)
-      {
-        [[maybe_unused]] auto v = i;
-      }
-    }
-  }
-  namespace test_lambda_capture_asterisk_this_by_value
-  {
-    struct t
-    {
-      int i;
-      int foo()
-      {
-        return [*this]()
-        {
-          return i;
-        }();
-      }
-    };
-  }
-  namespace test_enum_class_construction
-  {
-    enum class byte : unsigned char
-    {};
-    byte foo {42};
-  }
-  namespace test_constexpr_if
-  {
-    template <bool cond>
-    int f ()
-    {
-      if constexpr(cond)
-      {
-        return 13;
-      }
-      else
-      {
-        return 42;
-      }
-    }
-  }
-  namespace test_selection_statement_with_initializer
-  {
-    int f()
-    {
-      return 13;
-    }
-    int f2()
-    {
-      if (auto i = f(); i > 0)
-      {
-        return 3;
-      }
-      switch (auto i = f(); i + 4)
-      {
-      case 17:
-        return 2;
-      default:
-        return 1;
-      }
-    }
-  }
-  namespace test_template_argument_deduction_for_class_templates
-  {
-    template <typename T1, typename T2>
-    struct pair
-    {
-      pair (T1 p1, T2 p2)
-        : m1 {p1},
-          m2 {p2}
-      {}
-      T1 m1;
-      T2 m2;
-    };
-    void f()
-    {
-      [[maybe_unused]] auto p = pair{13, 42u};
-    }
-  }
-  namespace test_non_type_auto_template_parameters
-  {
-    template <auto n>
-    struct B
-    {};
-    B<5> b1;
-    B<'a'> b2;
-  }
-  namespace test_structured_bindings
-  {
-    int arr[2] = { 1, 2 };
-    std::pair<int, int> pr = { 1, 2 };
-    auto f1() -> int(&)[2]
-    {
-      return arr;
-    }
-    auto f2() -> std::pair<int, int>&
-    {
-      return pr;
-    }
-    struct S
-    {
-      int x1 : 2;
-      volatile double y1;
-    };
-    S f3()
-    {
-      return {};
-    }
-    auto [ x1, y1 ] = f1();
-    auto& [ xr1, yr1 ] = f1();
-    auto [ x2, y2 ] = f2();
-    auto& [ xr2, yr2 ] = f2();
-    const auto [ x3, y3 ] = f3();
-  }
-  namespace test_exception_spec_type_system
-  {
-    struct Good {};
-    struct Bad {};
-    void g1() noexcept;
-    void g2();
-    template<typename T>
-    Bad
-    f(T*, T*);
-    template<typename T1, typename T2>
-    Good
-    f(T1*, T2*);
-    static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
-  }
-  namespace test_inline_variables
-  {
-    template<class T> void f(T)
-    {}
-    template<class T> inline T g(T)
-    {
-      return T{};
-    }
-    template<> inline void f<>(int)
-    {}
-    template<> int g<>(int)
-    {
-      return 5;
-    }
-  }
-}  // namespace cxx17
-#endif  // __cplusplus < 201703L
-]])
--- a/m4/ax_cxx_compile_stdcxx_17.m4
+++ b/m4/ax_cxx_compile_stdcxx_17.m4
-# =============================================================================
-#  https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx_17.html
-# =============================================================================
-#
-# SYNOPSIS
-#
-#   AX_CXX_COMPILE_STDCXX_17([ext|noext], [mandatory|optional])
-#
-# DESCRIPTION
-#
-#   Check for baseline language coverage in the compiler for the C++17
-#   standard; if necessary, add switches to CXX and CXXCPP to enable
-#   support.
-#
-#   This macro is a convenience alias for calling the AX_CXX_COMPILE_STDCXX
-#   macro with the version set to C++17.  The two optional arguments are
-#   forwarded literally as the second and third argument respectively.
-#   Please see the documentation for the AX_CXX_COMPILE_STDCXX macro for
-#   more information.  If you want to use this macro, you also need to
-#   download the ax_cxx_compile_stdcxx.m4 file.
-#
-# LICENSE
-#
-#   Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
-#   Copyright (c) 2016 Krzesimir Nowak <qdlacz@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 2
-AX_REQUIRE_DEFINED([AX_CXX_COMPILE_STDCXX])
-AC_DEFUN([AX_CXX_COMPILE_STDCXX_17], [AX_CXX_COMPILE_STDCXX([17], [$1], [$2])])
--- a/m4/ax_latex_class.m4
+++ b/m4/ax_latex_class.m4
-# ===========================================================================
-#         http://www.nongnu.org/autoconf-archive/ax_latex_class.html
-# ===========================================================================
-#
-# OBSOLETE MACRO
-#
-#   Deprecated because of licensing issues. The Lesser GPL imposes licensing
-#   restrictions on the generated configure script unless it is augmented
-#   with an Autoconf Exception clause.
-#
-# SYNOPSIS
-#
-#   AX_LATEX_CLASS(CLASSNAME,VARIABLETOSET[,ACTION-IF-FOUND[,ACTION-IF-NOT-FOUND]])
-#
-# DESCRIPTION
-#
-#   This macros test is class CLASSNAME exists and work and set
-#   VARIABLETOSET to yes or no If ACTION-IF-FOUND (and ACTION-IF-NOT-FOUND)
-#   are set, do the correct action
-#
-# LICENSE
-#
-#   Copyright © 2008 Boretti Mathieu <boretti@eig.unige.ch>
-#   Copyright © 2009 Dynare Team
-#
-#   This library is free software; you can redistribute it and/or modify it
-#   under the terms of the GNU Lesser General Public License as published by
-#   the Free Software Foundation; either version 2.1 of the License, or (at
-#   your option) any later version.
-#
-#   This library is distributed in the hope that it will be useful, but
-#   WITHOUT ANY WARRANTY; without even the implied warranty of
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
-#   General Public License for more details.
-#
-#   You should have received a copy of the GNU Lesser General Public License
-#   along with this library. If not, see <http://www.gnu.org/licenses/>.
-AC_DEFUN([AX_LATEX_CLASS],[
-AC_CACHE_CHECK([for usability of class $1],[ac_cv_latex_class_]translit($1,[-],[_]),[
-AX_LATEX_TEST([\documentclass{$1}
-\begin{document}
-\end{document}],[ac_cv_latex_class_]translit($1,[-],[_]))
-])
-$2=$[ac_cv_latex_class_]translit($1,[-],[_]) ; export $2;
-AC_SUBST($2)
-ifelse($#,2,[],$#,3,[
-    if test "[$]$2" = "yes" ;
-    then
-        $3
-    fi
-],$#,4,[
-    ifelse($3,[],[
-        if test "[$]$2" = "no" ;
-        then
-            $4
-        fi
-    ],[
-        if test "[$]$2" = "yes" ;
-        then
-            $3
-        else
-            $4
-        fi
-    ])
-])
-])
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