build in C++17 mode by default

* configure.ac: Activate C++17, and replace --enable-c++17 by
--enable-c++20.
* NEWS: Mention the news.
* .gitlab-ci.yml: Use C++20 for the former C++17 builds.
* HACKING, README, doc/org/compile.org, doc/org/concepts.org,
doc/org/index.org, doc/org/install.org, doc/org/tut.org,
doc/org/upgrade2.org, spot/misc/escape.hh: Adjust mentions
of C++14.
This commit is contained in:
Alexandre Duret-Lutz 2020-07-16 12:12:21 +02:00
parent a770727ee8
commit 4f23097619
12 changed files with 79 additions and 62 deletions

View file

@ -19,8 +19,8 @@ successful development build]].
** Requirements
Spot requires a C++14-compliant compiler. =g++= 5.0 or later, as well
as =clang++= 3.5 or later should work.
Spot requires a C++17-compliant compiler. =g++= 7.0 or later, as well
as =clang++= 5.0 or later should work.
Spot expects a complete installation of Python (version 3.3 or later).
Especially, Python's headers files should be installed (the package to
@ -91,7 +91,7 @@ our [[https://www.lrde.epita.fr/repo/debian.gpg][GPG key]]. Its fingerprint is
9E74 44F2 A84A=, if you want to verify it.
The package =spot= contains the [[file:tools.org][command-line tools]]. =libspot-dev=
contains the header files if you plan to use Spot in a C++14
contains the header files if you plan to use Spot in a C++17
program. =spot-doc= contains some html (including these pages) and pdf
documentation. Finally =python3-spot= contains some Python bindings
(this package also installs some ipython notebooks that you can use as