Require a C++-17 compiler

CMakeLists.txt

@@ -153,7 +153,7 @@ Please build with cmake in a subdirectory, e.g.
 Please remove CMakeCache.txt and the CMakeFiles directories.")
 endif()
 
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_EXTENSIONS OFF)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_C_VISIBILITY_PRESET hidden)

ChangeLog

@@ -1,3 +1,7 @@
+2022-10-06  Jay Berkenbilt  <ejb@ql.org>
+
+        * Change minimum required C++ version from C++-14 to C++-17.
+
 2022-10-01  Jay Berkenbilt  <ejb@ql.org>
 
         * 11.1.1: release

README.md

@@ -29,7 +29,7 @@ Versions of qpdf prior to version 7 were released under the terms of version 2.0
 
 # Prerequisites
 
-QPDF requires a C++ compiler that supports C++-14.
+QPDF requires a C++ compiler that supports C++-17.
 
 To compile and link something with qpdf, you can use `pkg-config` with package name `libqpdf` or `cmake` with package name `qpdf`. Here's an example of a `CMakeLists.txt` file that builds a program with the qpdf library:
 

manual/installation.rst

@@ -16,7 +16,7 @@ need to build qpdf in various circumstances.
 Basic Dependencies
 ~~~~~~~~~~~~~~~~~~
 
-- A C++ compiler that supports C++-14
+- A C++ compiler that supports C++-17
 
 - `CMake <https://www.cmake.org>`__ version 3.16 or later
 

manual/release-notes.rst

@@ -8,6 +8,11 @@ For a detailed list of changes, please see the file
 
 .. x.y.z: not yet released
 
+11.2.0: not yet released
+  - Build changes
+
+    - A C++-17 compiler is now required.
+
 11.1.1: October 1, 2022
   - Bug fixes