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Changes from previous version of pkgconf
Changes from 2.1.0 to 2.1.1:
* Documentation fixes from Sam James and Stefan Weil.
* Fix --modversion with constraints.
Patch by Kai Pastor.
* Reintroduce an optimization to the dependency graph walker which avoids
revisiting already visited nodes.
Patch by Yi Chou with some modifications.
* Add a regression test to check that the dependency flattener is working
as expected.
Patch by Kai Pastor.
Changes from 2.0.3 to 2.1.0:
* Do not flatten the solver solution into the original world used as
input to the solver.
Patches by Kai Pastor.
* Fix warnings with GCC 14 -Walloc-size.
Patch by Sam James.
* Add --solution to the pkgconf CLI to dump the solver state.
* Improve the --digraph output to clarify cancelled edges in a given
* Demote requires dependencies to requires.private when a parent
dependency is pulled in via requires.private.
* Trim trailing whitespace when processing package arguments.
Patch by Colin Gillespie.
* Avoid strncmp() in --modversion version comparison.
Patch by Colin Gillespie.
* Update autoconf compile flag checking macro.
Patch by Peter Kokot.
* Add system default path configuration to Meson.
Patch by L. E. Segovia.
* Fix order of PKG_CONFIG_LIBDIR and PKG_CONFIG_PATH element processing.
Changes from 2.0.2 to 2.0.3:
* Fix some edge-cases with the new `--modversion` implementation
and add additional regression tests.
Patch by Colin Gillespie.
* Fix some format specifiers to use PRIu64 in debug tracing.
Changes from 2.0.1 to 2.0.2:
* Fix long-standing bug where package identifiers for "uninstalled"
packages incorrectly included the "-uninstalled" suffix.
This was exposed by the recent change to `--modversion` in 2.0.1.
Changes from 2.0.0 to 2.0.1:
* The behavior of --modversion was largely reverted back to the traditional
pkg-config behavior, but still operates on a solved dependency graph.
The order of --modversion output is based on the dependency resolution
queue which is passed to the solver, which itself generally maps to the
order of the constrants provided on the command line.
* A new flag, --verbose, has been added. When used with `--modversion`, it
is possible to disambiguate which version belongs to which module:
% pkgconf --modversion --verbose foo bar
foo: 1.2.3
bar: 1.3
Changes from 1.9.5 to 2.0.0:
* When flattening the dependency graph, retain the latest seen edges
rather than the earliest.
* Fix a long-standing bug where the dependency resolution queue was
evaluated in reverse. This bug masked the aforementioned dependency
flattening bug in many cases.
* Fix handling of --with-path, which was appending paths to the search
list rather than prepending them as intended.
* Error when --modversion is requested with more than one package, as
the output is ambiguous.
Changes from 1.9.4 to 1.9.5:
* Fix incorrect assumptions involving the use of ctype(3) functions.
Patch by Taylor R Campbell.
* Fix detection of provided functions on autoconf.
Patches by Harmen Stoppels.
* Fix deletion of tests/ by the autoconf build system.
Patch by h30032433.
* Fix quoting rules in argvsplit.c.
Patch by huyubiao.
* Update libpkgconf documentation and documentation building scripts.
Patches by Andrew Shadura.
* Enforce maximum package count correctly for --modversion.
Changes from 1.9.3 to 1.9.4:
* Fix a buffer overflow vulnerability involving very large variable expansions.
* Fix a bunch of minor regressions with the solver.
* Create separate solutions for `--cflags` and `--libs` when `--static` is not
* Remove final trailing whitespace in pkgconf_fragment_render_buf().
* Revert broken pkg.m4 change involving querying module versions in
* Fix handling of tildes in version strings.
* Various C99 formatting string fixes involving SIZE_FMT_SPECIFIER.
Changes from 1.9.2 to 1.9.3:
* Fix a bunch of minor code issues pointed out using Clang static analyzer.
* New API: pkgconf_solution_free(), which frees a compiled solution graph.
* Fix behavior when overriding global variables with `--define-variable`.
Changes from 1.9.1 to 1.9.2:
* Do not try to break dependency cycles across dependency lists. This causes
the solved graph to sometimes miss required dependency nodes because the
solver detected an incorrect dependency cycle.
* New API: pkgconf_queue_solve(), which replaces pkgconf_queue_apply().
pkgconf_queue_apply is now deprecated and should not be used in new code.
Changes from 1.9.0 to 1.9.1:
* Skip graph flattening and traversal for query types which only make sense
for a single pkg-config module.
The old solver walked these graphs with --maximum-traverse-depth=1 in
these cases, but this is no longer helpful because the graph is flattened
by the new solver.
Changes from 1.8.0 to 1.9.0:
* pkgconf 1.9.0 is the first testing release in the pkgconf 2.0 development
series. While it is believed to be suitable for production, there may be
bugs due to the overall redesign of the solver and other initiatives.
Additionally, a future release of pkgconf plans will have additional ABI
breaks for the libpkgconf library before the pkgconf 2.0 release is cut.
* There is now a new solver that is designed to provide higher performance
with complicated graphs, which works by flattening the dependency graph
into a smaller set of dependencies. This graph can then be evaluated
instead of the original dependency graph without having to visit every
edge in the graph.
NOTE: This solver, while providing significant performance improvements,
does so, at the cost of changed behavior for some edge cases (such as
circular dependencies).
* Bug fixes:
- Resolved several memory leaks with edge cases when using libpkgconf
- pkgconf CLI now consistently frees libpkgconf resources under all
- SYSROOT rules are no longer applied to `-uninstalled` packages by
default. Use `PKG_CONFIG_PKGCONF1_SYSROOT_RULES` for legacy behavior.
* A new `--license` selector has been added to the pkgconf CLI. This uses
SPDX expressions which can be set as the `License` field in `.pc` files.
See the `pc(5)` manpage for more information.
* The canonical location for pkgconf maintenance going forward is
<>. This is presently
mirrored to GitHub for user convenience, but that mirroring will
be terminated at some point (due to GitHub Copilot).
Changes from 1.7.4 to 1.8.0:
* This is the last planned maintenance branch. I see pkgconf as basically
a finished tool at this point, and very few people were ultimately interested
in libpkgconf. So, from here on out, it will just be bug fixes only and
very minor enhancements.
* Bug fixes:
- Improved path handling on Windows to conform to what the MSYS2
and Cygwin teams were already modifying pkgconf to do.
Patches by Christoph Reiter.
- Fix a minor memory leak relating to cross-personalities.
Patch by Stone Tickle.
- Fix static builds for Windows on Meson.
Patch by Alexander Neumann.
- Fix some edge cases with --redefine-prefix.
Patch by midipix.
- Do not prepend sysroot_dir if the .pc file does not exist in the
Patch by Sandro Mani.
- Do not perform path filtering on default system include and library
path lists. This fixes consistency with other mechanisms that modify
these path lists.
* Enhancements:
- Document the --validate option in the manpage.
Patch by orbea.
Changes from 1.7.3 to 1.7.4:
* Bug fixes:
- Fix null-dereference crash when pulling a malformed 'uninstalled'
.pc file into a dependency tree. Patch by Tobias Stöckmann.
- Fix truncation of comment characters when quoted.
- Fix handling of .pc module names in --list-all on Windows.
Patch by Ryan Scott.
- Handle platforms where realpath(3) requires a pre-allocated buffer.
Patch by Fabian Groffen.
- Fix version whitespace warning.
Patch by Christoph Reiter.
* Enhancements:
- Rewrite DOS paths on native Windows builds that don't use
- Add WantDefaultPure cross-compiler personality option.
- Prefer --static --pure linking on Windows.
- Add PKG_CONFIG_DONT_DEFINE_PREFIX environment variable.
Patch by Jeff Moguillansky.
- Many improvements when building pkgconf with Meson.
Patches by Christoph Reiter.
Changes from 1.7.2 to 1.7.3:
* Bug fixes:
- Fix a possible out of boundary write when evaluating dependencies.
Patch by Tobias Stöckmann.
- Fix escaping logic on Windows. Patch by Vincent Torri.
- Fix out of boundary reads and writes with a malformed fragment.
Patches by Tobias Stöckmann.
- Fix a possible out of boundary write when evaluating tuples.
Patch by Tobias Stöckmann.
Changes from 1.7.1 to 1.7.2:
* Bug fixes:
- Fix a windows-specific crash relating to path fixups.
Changes from 1.7.0 to 1.7.1:
* Bug fixes:
- Fix a possible out of boundary access in the parser for the
cross-compile database. Patch by Tobias Stöckmann.
- Missing files for building with Meson are now included in the
tarball. Patch by Neal Gompa.
- Fix calculation of package atoms on Windows with paths that
use both directory separator characters.
Changes from 1.6.3 to 1.7.0:
* Bug fixes:
- Fix a possible buffer overflow involving newline escaping.
Patch by Tobias Stöckmann.
- Fix an out of boundary access in the parser.
Patch by Tobias Stöckmann.
- Fix leakage of strcmp() result value in pkgconf_compare_version()
- Return the default personality if loading a cross-compile
personality file failed.
- Do not complain about newlines when validating package versions.
- Properly detect strndup() on Windows when building with Meson.
* Enhancements:
- A new --shared option and WantDefaultStatic cross-compile
configuration option have been added. This allows for toolchains
to specify that static linking should be used by default.
- Support for the PKG_CONFIG_MSVC_SYNTAX environment variable has
been added. Patch by Dan Kegel.
client flag which disables emulation of pkg-config
fragment merging semantics has been added.
Patch by Karen Arutyunov.
Changes from 1.6.2 to 1.6.3:
* Bug fixes:
- Properly tokenize versions. Versions cannot logically contain
whitespace, as dependency-lists would not properly tokenize if
they could. A diagnostic is generated for malformed version
strings containing whitespace when --validate is used.
* Enhancements:
- CMake support has been dropped. Use Meson to build on Windows.
Changes from 1.6.1 to 1.6.2:
* Bug fixes:
- Fixed a memory leak when deduplicating paths.
- Fixed strndup-related build regression on Windows.
* Enhancements:
- Added pkgconf-lite variant. pkgconf-lite is a stripped down
variant of pkgconf that only includes pkg-config features.
- Added --modversion description to pkgconf(1) man page.
Changes from 1.6.0 to 1.6.1:
* Bug fixes:
- Fixed an issue where a personality may not be properly selected
due to argv[0] containing a full path.
- Fixed a regression where having an empty PKG_CONFIG_LIBDIR
environment variable would not eliminate the default search
- Use POSIX realpath(3) instead of readlink() for deduplicating the
search path. Use _fullpath() on Windows for the same purpose.
- The dequoting logic for tuples has been improved to ensure that
quotes *inside* a value remain quoted when necessary.
Changes from 1.5.4 to 1.6.0:
* Bug fixes:
- Fixed issue where packages which referenced missing packages in
Requires.private may have crashed due to memory corruption issues
in some circumstances.
- Fixed warnings reported by GCC 8 diagnostics.
* Enhancements:
determining libpkgconf version.
- Add pkgconf_fragment_copy_list() to copy a fragment list to
another fragment list.
Changes from 1.5.3 to 1.5.4:
* Bug fixes:
- fix build on Windows with Meson
- fix edge cases for path canonicalization (especially on Windows)
Changes from 1.5.2 to 1.5.3:
* Security fixes:
- Fix edge cases involving dequoting zero-length tuples that can lead to a
buffer overflow under the right circumstances. Thanks to A. Wilcox for
reporting and supplying a patch. (MR 3)
Changes from 1.5.1 to 1.5.2:
* 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.
Changes from 1.5.0 to 1.5.1:
* Bug fixes:
- fixed a crash with some invalid multi-line .pc files
Changes from 1.4.2 to 1.5.0:
* Administrative:
- The git repository has moved to <>,
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)
Changes from 1.4.1 to 1.4.2:
* Bug fixes:
- ensure pkgconf_dependency_t nodes have a solution marked when satisfied
by an indirect provider (github #172)
Changes from 1.4.0 to 1.4.1:
* 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
Changes from 1.3.7 to 1.4.0:
* 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 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
- new --env option allows for exporting cflags/libs fragments as export
- 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 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
- fix crash in edge case where a .pc file has misquoting in a fragment list.
- fix logic edge case when comparing relocated paths
Changes from 1.3.6 to 1.3.7:
* Enhancements:
- improved diagnostics for malformed packages.
* Bug fixes:
- reject packages which contain incomplete metadata in post-parse phase.
Changes from 1.3.5 to 1.3.6:
* Enhancements:
- add many cflags to the protected set: -Wa, -Wl, -Wp, -ansi, -std=, -stdlib=,
-pedantic, -pthread, -trigraphs, -nostdinc, -nostdlibinc, -nobuiltininc.
* Bug fixes:
- handle -include cflag fragments properly.
Changes from 1.3.4 to 1.3.5:
* Bug fixes:
- fix --variable output for compatibility some broken configure scripts when they
request the same variable from multiple packages
Changes from 1.3.3 to 1.3.4:
* Bug fixes:
- fix a quoting issue exposed by the Go testsuite
Changes from 1.3.2 to 1.3.3:
* Bug fixes:
- back out disabling the dependency resolver for single-package queries, it caused
too many regressions.
* Enhancements:
- allow explicitly disabling the dependency resolver via new environment variable,
PKG_CONFIG_MINIMUM_TRAVERSE_DEPTH=1. while pkgconf could already do this using
--minimum-traverse-depth=1, other pkg-config implementations do not have this
option, so adding an environment variable allows to make better use of this
feature (other implementations won't error due to unknown option this way)
Changes from 1.3.1 to 1.3.2:
* Bug fixes:
- rewrite handling of --modversion, --print-variables and --variable to not require
the dependency resolver
- ensure we disable the dependency resolver in all cases where it is a single-package
query (1.3.1 did not go far enough)
Changes from 1.3.0 to 1.3.1:
* Features:
- implement --short-errors
* Bug fixes:
- only consider a single package at a time with --print-requires, --print-requires-private,
--print-provides, --modversion, --print-variable and --print-variables
* Enhancements:
- synchronized latest changes to pkg.m4
- improve error reporting with legacy --atleast-version and similar flags.
Changes from 1.2.0 to 1.3.0:
* Features:
- pkgconf --debug now provides a facility for tracing most relevant libpkgconf operations
- libpkgconf: add warn and trace handlers for warnings
- replace realpath() with faster, lighter weight path normalization function (github #112)
- pkgconf CLI now emulates pkg-config quoting rules precisely, while allowing direct access
to the actual fragments via libpkgconf
* Bug fixes:
- pkg: properly separate static and virtual packages so they are not inappropriately
optimized out of the dependency graph (github #108)
- argvsplit: do not consider ' and " to have similar rules to escape sequences (github #111)
- pkg: strip trailing whitespace when parsing .pc files
* Enhancements:
- argvsplit basically rewritten from scratch
- many code fixes spotted by coverity
- add PKG_CONFIG_DONT_RELOCATE_PATHS and --dont-relocate-paths environment variables to
disable path relocation feature if needed
- remove extra whitespace that was present for compatibility with older pkg-config releases
(github #113)
Changes from 1.1.0 to 1.2.0:
* Features:
- new --path option lists the .pc files which provided the requested dependencies
- new path relocation API: pkgconf_path_relocate(), which wraps functions such as
realpath() and cygwin_conv_path().
- new --with-path option adds a path to the search list
- new --define-prefix and --dont-define-prefix features enable automatic prefix
detection for relocatable SDKs. this is mostly useful on windows.
* Bug fixes:
- fragments: fix even more edge cases involving token concatenation
- path lists: don't attempt to collect path inodes if the filter is disabled
- path lists: explicitly avoid uninitialised data for the path inode cache
- client: properly handle --keep-system-cflags and --keep-system-libs
* Enhancements:
- windows: build libpkgconf as a DLL
- fragments: only munge fragments if sysroot_dir is actually set
- overall API: resolver flags have been moved to being a client-object setting
instead of used for every function invocation
Changes from 1.0.1 to 1.1.0:
* Features:
- new Provides system allows alternate .pc files to provide a dependency
- stable library API (with documentation):
* Enhancements:
- make it possible to programmatically declare dependencies instead of just using the parser
- testsuite migrated to run under kyua
- provide a libpkgconf.pc file for consumers to use
- pkgconf client: new --pure flag to enable dependency graph optimization in --static mode
- significant .pc parser speedups using bsearch(3).
- handle -idirafter in the same way as -isystem CFLAGS
- learn toolchain "system" paths from GCC environment variables, if present
- filter duplicate PKG_CONFIG_PATH (and other) entries by inode
* Bug fixes:
- fragments: fix another edge case involving empty tokens being concatenated onto previous tokens
(github #99)
- libpkgconf: remove dependencies on config.h in public headers
Changes from 1.0.0 to 1.0.1:
* Enhancements:
- new stub implementation of --print-provides (github #95)
* Bug fixes:
- fragments: fix an edge case involving path-only fragments and PKG_CONFIG_SYSROOT_DIR (github #94)
Changes from 0.9.12 to 1.0.0:
* Features:
- new library: libpkgconf
* Enhancements:
- testsuite: use an explicit prefix on all tests
- build: switch to automake
* Bug fixes:
- cast all usage of ctype(3) functions
- do not expand variables passed via --define-variable for compatibility with pkg-config 0.29
- let the CFLAGS being user settable
Changes from 0.9.11 to 0.9.12:
* Features:
- add --list-package-names
* Enhancements:
- ensure -I and -L are never pushed back
* Bug fixes:
- fix implicit conversion warnings with variables over 31bits
Changes from 0.9.10 to 0.9.11:
* Features:
- add --validate
* Enhancements:
- add large file support checks in autoconf
* Bug fixes:
- fix private lib deduplication
- handle --static correctly in some more esoteric scenarios
Changes from 0.9.9 to 0.9.10:
* Features:
* Enhancements:
* Bug fixes:
- Fix parser when dealing with commented lines
Changes from 0.9.8 to 0.9.9:
* Features:
- add a sub out --print-provides
* Enhancements:
* Bug fixes:
- Fix parser when dealing with comments in fields
Changes from 0.9.7 to 0.9.8:
* Features:
* Enhancements:
- Convert manpages to mdoc(7)
* Bug fixes:
- Fix parsing multiline fields
Changes from 0.9.6 to 0.9.7:
* Features:
* Enhancements:
- Convert manpages to mdoc(7)
* Bug fixes:
- Fix parsing multiline fields
Changes from 0.9.5 to 0.9.6:
* Features:
- add a sub --debug
* Enhancements:
- Do not hardcode non-posix install(1)
* Bug fixes:
- fix --with-system-includedir and --with-system-libdir behaviour
Changes from 0.9.4 to 0.9.5:
* Features:
* Enhancements:
- Make all variables but CFLAGS and LIBS case sensitive
* Bug fixes:
Changes from 0.9.3 to 0.9.4:
* Features:
- Add a pkgconf(1) manpage
* Enhancements:
- Improve support for MacOS -framework
* Bug fixes:
Changes from 0.9.2 to 0.9.3:
* Features:
- Add support for CFLAGS.private
* Enhancements:
- Support out of source build
- Improved private libs deduplication
* Bug fixes:
Changes from 0.9.1 to 0.9.2:
* Features:
* Enhancements:
* Bug fixes:
- Fix PKG_CONFIG_PATH being ignored when a .pc is directly supplied from
command line
Changes from 0.9.0 to 0.9.1:
* Features:
* Enhancements:
- --simulate: print depgraph operations
- --simulate: print bytecode program as a human-readable AST
* Bug fixes:
- reset parser state on new package atom
Changes from 0.8.12 to 0.9.0:
* Features:
* Enhancements:
- Rework the internal cache API
- Rework the internal code to use the new pkg_list_t framework
- Rework PKG_CONFIG_PATH handling code
* Bug fixes:
- fix multi-recursion with -framework