Install args.pc only on a main project build

What's Changed

• Install args.pc only when doing main project build by @serge-s in #133

New Contributors

• @serge-s made their first contribution in #133

Full Changelog: 6.4.7...6.4.8

Bump minimum CMake version to 3.10

CMake 4.0 errors on a minimum version below 3.5. Below 3.10 is deprecated.

Fix tests

The previous help output change broke a test.

Fix program line options placement

If there are optional flags, an {OPTIONS} message will be printed in the program line. This release fixes the options placement to precede positional parameters.

Fix pkgconfig installation placement

A movement in CMakeLists.txt broke where the args pkgconfig file was placed ( #110 ). This release fixes that regression.

Fix CMake version

CMake's find_package now sets args_VERSION and other similar variables appropriately.

-- args_FOUND=1
-- args_VERSION=6.4.3
-- args_VERSION_COUNT=3
-- args_VERSION_MAJOR=6
-- args_VERSION_MINOR=4
-- args_VERSION_PATCH=3
-- args_VERSION_TWEAK=0

Add operator* and operator-> to most types

args::get is still available and works. These interfaces are given for better uniformity with std::optional and to help reduce verbosity.

6.2.7

version bumps

Correct default behavior for list arguments

Some relevant test cases were also added.

6.2.1

default values bugfix