Pkgconf

----------------------------

* Bug fixes:
- Ensure environment variables override values learned from personality files
or built-in defaults.

* Documentation enhancements:
- Add pkgconf-personality(5) manpage documenting the personality file format.

----------------------------

* Bug fixes:
- fixed a crash with some invalid multi-line .pc files

---------------------------

* Administrative:
- The git repository has moved to <https://git.dereferenced.org/pkgconf/pkgconf>,
due to the acquisition of GitHub by Microsoft.

* Overall enhancements:
- pkgconf now supports the proposed Requires.internal pkg-config extension,
by merging it with the Requires.private list (there is no functional difference
between the two in our resolver implementation)
- Support for cross-compilation personalities have been added. To make use of this
functionality, create a file in the new personality.d directory that sits inside
the pkgconfig directory. The personality file format is described in
pc-personality(5). (github 166)
- Support for Haiku has been added, including interpretation of BELIBRARIES and
other toolchain specifics. (github 180)
- Testsuite support can be disabled when building with Meson. (github 175)

* Bug fixes:
- tuples are now appropriately dequoted when added by the parser (github 186).

* Various Windows enhancements:
- CMake supports building with GCC on Windows. (github 179)
- Prefix rewriting has been improved. (github 177)
- PKGCONF_API support has been implemented when building with Meson,
allowing Meson to be used to build pkgconf on Windows. (github 174)

* Documentation fixes:
- The manpages have been linted and fixed. (github 181, 182, 183)
- The description of pkgconf --exists has been corrected. (github 173)

----------------------------

* Bug fixes:
- ensure pkgconf_dependency_t nodes have a solution marked when satisfied
by an indirect provider (github 172)

----------------------------

* Bug fixes:
- revert some quoting changes because they don't work well with certain
GCC edge cases (github 168)

* Enhancements:
- add limited support for --cflags with --msvc-syntax

----------------------------

* Notable libpkgconf API changes:
- pkgconf_pkg_t.requires has been renamed to pkgconf_pkg_t.required for
C++20 compatibility.

* Enhancements:
- pkgconf and libpkgconf has been ported to Windows as native binaries.
- improved compatibility with freedesktop.org pkg-config's ${pc_sysrootdir}
usage pattern.
- do not mention PKG_CONFIG_SKIP_CONFLICTS environmental variable when
simplified errors are requested, as with PKG_CONFIG_PATH.
- the dependency solver now stores solutions to dependency graph elements
it visits, allowing for the dependency graph to be incrementally solved.
this improves dependency solving time by an order of magnitude in most
cases.
- new --env option allows for exporting cflags/libs fragments as export
variables
- new support for building pkgconf with CMake and Meson
- improved compiler warning flag detection on autoconf and CMake
- removed PKGCONF_BUFSIZE allocations from the stack where possible
- allow for customizing the way fragment lists are rendered using a callback API
- new support for --msvc-syntax output using the new fragment rendering callbacks
- fragments are now quoted according to POSIX literal rules
- new variables on the pkg-config builtin:
- ${pc_system_includedirs}: the system includedir search path known by pkgconf
- ${pc_system_libdirs}: the system libdir search path known by pkgconf
- new manpages:
- pc(5) describing pkgconf's interpretation of pkg-config .pc files
- pkg.m4(7) describing the autotools macros bundled with pkgconf

* Bug fixes:
- fix pkgconf_pkg_t.id generation on native Windows where either \ or / are usable
as path separator.
- add missing --modversion to --help output
- do not evaluate module paths for modules that are not actually on disk
- ensure we work on a zeroed buffer prior to calling realpath(2) with it
- fix path deduplication edge case when cache-inodes feature is unavailable
- fix path rewriting regression with PKG_CONFIG_SYSROOT_DIR when
PKG_CONFIG_SYSROOT_DIR is set to /
- fix crash in edge case where a .pc file has misquoting in a fragment list.
- fix logic edge case when comparing relocated paths