ARROW-17545: [C++][CI] Mandate C++17 instead of C++11 (apache#13991)

This PR switches our build system to require C++17 instead of C++11.

Because the conda packaging jobs are out of sync with the conda-forge files, the Windows conda packaging jobs are broken with this change. The related task (sync conda packaging files with conda-forge) is tracked in ARROW-17635.


Authored-by: Antoine Pitrou <[email protected]>
Signed-off-by: Antoine Pitrou <[email protected]>

Author: pitrou

CMakeLists.txt

@@ -21,7 +21,7 @@ message(STATUS "Building using CMake version: ${CMAKE_VERSION}")
 project(arrow-java-jni)
 
 if("${CMAKE_CXX_STANDARD}" STREQUAL "")
-  set(CMAKE_CXX_STANDARD 11)
+  set(CMAKE_CXX_STANDARD 17)
 endif()
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 

c/README.md

@@ -24,7 +24,7 @@
 install:
  - Java 8 or later
  - Maven 3.3 or later
- - A C++11-enabled compiler
+ - A C++17-enabled compiler
  - CMake 3.11 or later
  - Make or ninja build utilities