[LFS Trac] #5987: pkgconf-3.0.5

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#5987: pkgconf-3.0.5
-------------------------+----------------------
 Reporter:  Bruce Dubbs  |      Owner:  lfs-book
     Type:  enhancement  |     Status:  new
 Priority:  normal       |  Milestone:  13.1
Component:  Book         |    Version:  git
 Severity:  normal       |   Keywords:
-------------------------+----------------------
 New point version

 Changes from 3.0.4 to 3.0.5:

 * Correctness fixes:
   - Shell quoting and backslash escapes in pc(5) properties are now
 consumed
     once, after variable substitution, instead of while splitting the
 property
     beforehand.  Quoting arriving from a variable is therefore treated
 like
     quoting written inline, --variable reports a value as the .pc file
 spells
     it, and fragments are escaped exactly once when rendered.  This
 supersedes
     the 3.0.4 fix, which unescaped whitespace at parse time and so hid the
     escaping from consumers such as cmake's FindPkgConfig.
     See https://github.com/pkgconf/pkgconf/issues/575 and
     https://github.com/pkgconf/pkgconf/issues/579.
   - Metadata queries no longer consult Conflicts rules between the modules
 named
     on the command line, as reporting metadata does not combine them into
 a
     build.  This covers --license, --license-file, --modversion, --path,
     --print-provides, --print-requires, --print-requires-private,
     --print-variables, --source and --variable.  --cflags, --libs and
 --exists
     are unaffected.
     See https://github.com/pkgconf/pkgconf/issues/580.
   - ${pc_sysrootdir} is now injected into the path taken by every -isystem
 and
     -idirafter flag in a fragment list, rather than only the first.
   - -isystem and -idirafter written joined to their path, as in
 `-isystem/opt`,
     are split into the flag and the path it takes, so that the path is
 subject
     to the same sysroot injection and deduplication as the separated
 spelling.
   - Sysroot injection is decided by reading the fragment's path instead of
     remembering whether ${pc_sysrootdir} was expanded, so a path which
 already
     lies under the sysroot never acquires a doubled prefix.

 * Performance:
   - The package cache and the fragment deduplication index are kept sorted
 and
     searched with bsearch() rather than re-sorted or scanned linearly.
   - Variable keys and fragment text are stored with the structures they
 belong
     to, and buffers are rewound and reused rather than reallocated.
   - Escaping, fragment rendering and path relocation write into their
     destination buffer directly.
   Resolving a graph of roughly forty modules is about six times faster
 than
   3.0.4, and a small graph such as gio-2.0 about twice as fast.

 * Build and portability fixes:
   - Fix the pkgconf-lite build, which failed to link because the
 dependency list
     renderer had come to depend on tracing machinery that pkgconf-lite
 omits.
   - Fix the test runner failing to build on MinGW, where the mkdtemp(3)
 fallback
     was compiled only for MSVC builds.
     See https://github.com/pkgconf/pkgconf/issues/582.
   - The meson build now defines HAVE_DECL_READLINKAT, so readlinkat(2) is
 used
     where it is available instead of always falling back to readlink(2).
   The MinGW and readlinkat fixes are by moi15moi.

 * New libpkgconf API additions:
   - pkgconf_argv_split_raw: splits a string into an argument vector like
     pkgconf_argv_split, but leaves the quoting it reads in place.
   - pkgconf_fragment_filter_splice: like pkgconf_fragment_filter, but
 moves the
     matching fragments to the destination list instead of copying them.
   - pkgconf_charset_from_spans: compiles a span list into a byte set.
   - pkgconf_buffer_escape_charset: escapes a buffer against such a byte
 set.
   - pkgconf_buffer_rewind: empties a buffer while keeping its allocation.
   - pkgconf_list_splice: moves the contents of one list onto the end of
 another.
-- 
Ticket URL: <https://wiki.linuxfromscratch.org/lfs/ticket/5987>
LFS Trac <https://wiki.linuxfromscratch.org/lfs/>
Linux From Scratch: Your Distro, Your Rules.

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