initial commit

.gitignore

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+build/*
+subprojects/glib/*
+subprojects/libffi/*
+subprojects/packagecache/*
+subprojects/pcre2-10.40/*
+subprojects/proxy-libintl/*
+subprojects/zlib-1.2.11/*
+subprojects/gvdb.wrap
+subprojects/libffi.wrap
+subprojects/pcre2.wrap
+subprojects/proxy-libintl.wrap
+subprojects/zlib.wrap

.gitmodules

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+[submodule "pkg-config"]
+	path = pkg-config
+	url = https://gitlab.freedesktop.org/pkg-config/pkg-config

README.md

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+<h1 align="center">pkg-config</h1>
+
+<p align="center">
+  <a href="https://github.com/clitic/pkg-config">
+    <img src="https://img.shields.io/github/downloads/clitic/pkg-config/total?style=flat-square">
+  </a>
+  <a href="https://github.com/clitic/pkg-config">
+    <img src="https://img.shields.io/github/repo-size/clitic/pkg-config?logo=github&style=flat-square">
+  </a>
+</p>
+
+[pkg-config](https://gitlab.freedesktop.org/pkg-config/pkg-config) is a script to make putting together all the build flags when compiling/linking a lot easier. Visit [releases](https://github.com/clitic/pkg-config/releases) for prebuilt binaries. Extract archive and add `bin` directory in your `PATH` environment variable.
+
+## Building
+
+1. Install [meson](https://mesonbuild.com/SimpleStart.html) build system. Then install any one of these c compiler: [msvc](https://visualstudio.microsoft.com), [gcc](https://gcc.gnu.org), [mingw](https://www.mingw-w64.org/downloads) or [clang](https://github.com/llvm/llvm-project).
+
+2. Now recursively clone pkg-config repository.
+
+```bash
+git clone https://github.com/clitic/pkg-config --recursive --depth 1
+cd pkg-config
+```
+
+3. Now setup pkg-config using meson. Use `--prefix` flag to specify installation directory. For more meson options see [meson_options.txt](https://github.com/clitic/pkg-config/blob/main/meson_options.txt).
+
+```bash
+meson setup build --buildtype release --warnlevel 0 --default-library static --prefix c:/pkg-config -Dbuild-glib=true
+```
+
+4. Now install pkg-config using meson. The skipped subprojects are not needed at runtime if you still want to keep them, then remove `--skip-subprojects` flag.
+
+```bash
+meson install -C build --skip-subprojects "glib,libffi,pcre2,proxy-libintl,zlib"
+```
+
+5. Now pkg-config should be installed in your prefix directory. Now add `$PREFIX/bin` in your `PATH` environment variable. You can further read more information about building through meson from meson's quick [guide](https://mesonbuild.com/Quick-guide.html).

meson.build

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+project(
+  'pkg-config',
+  'c',
+  version: '0.29.2',
+  license: 'GPL-2.0',
+  meson_version: '>=0.64.0'
+)
+
+cc = meson.get_compiler('c')
+system = host_machine.system()
+
+pkg_config_defines = []
+
+system_include_path = get_option('system-include-path')
+
+if system_include_path == 'auto' and system == 'windows'
+  pkg_config_defines += '-DPKG_CONFIG_SYSTEM_INCLUDE_PATH=""'
+elif system_include_path == 'auto'
+  pkg_config_defines += '-DPKG_CONFIG_SYSTEM_INCLUDE_PATH="/usr/include:/usr/local/include"'
+else
+  pkg_config_defines += f'-DPKG_CONFIG_SYSTEM_INCLUDE_PATH="@system_include_path@"'
+endif
+
+system_library_path = get_option('system-library-path')
+
+if system_library_path == 'auto' and system == 'windows'
+  pkg_config_defines += '-DPKG_CONFIG_SYSTEM_LIBRARY_PATH=""'
+elif system_library_path == 'auto'
+  pkg_config_defines += '-DPKG_CONFIG_SYSTEM_LIBRARY_PATH="/usr/lib:/usr/local/lib"'
+else
+  pkg_config_defines += f'-DPKG_CONFIG_SYSTEM_LIBRARY_PATH="@system_library_path@"'
+endif
+
+pkg_config_defines += '-DENABLE_DEFINE_PREFIX=' + get_option('enable-define-prefix').to_int().to_string()
+pkg_config_defines += '-DENABLE_INDIRECT_DEPS=' + get_option('enable-indirect-deps').to_int().to_string()
+
+if cc.has_header('dirent.h')
+  pkg_config_defines += '-DHAVE_DIRENT_H'
+endif
+
+if cc.has_header('dlfcn.h')
+  pkg_config_defines += '-DHAVE_DLFCN_H'
+endif
+
+if cc.has_header('inttypes.h')
+  pkg_config_defines += '-DHAVE_INTTYPES_H'
+endif
+
+if cc.has_header('malloc.h')
+  pkg_config_defines += '-DHAVE_MALLOC_H'
+endif
+
+if cc.has_header('memory.h')
+  pkg_config_defines += '-DHAVE_MEMORY_H'
+endif
+
+if cc.has_header('stdint.h')
+  pkg_config_defines += '-DHAVE_STDINT_H'
+endif
+
+if cc.has_header('stdlib.h')
+  pkg_config_defines += '-DHAVE_STDLIB_H'
+endif
+
+if cc.has_header('strings.h')
+  pkg_config_defines += '-DHAVE_STRINGS_H'
+endif
+
+if cc.has_header('string.h')
+  pkg_config_defines += '-DHAVE_STRING_H'
+endif
+
+if cc.has_header('sys/stat.h')
+  pkg_config_defines += '-DHAVE_SYS_STAT_H'
+endif
+
+if cc.has_header('sys/types.h')
+  pkg_config_defines += '-DHAVE_SYS_TYPES_H'
+endif
+
+if cc.has_header('sys/wait.h')
+  pkg_config_defines += '-DHAVE_SYS_WAIT_H'
+endif
+
+if cc.has_header('unistd.h')
+  pkg_config_defines += '-DHAVE_UNISTD_H'
+endif
+
+pkg_config_defines += '-DLT_OBJDIR=".libs/"'
+pkg_config_defines += '-DPACKAGE="@0@"'.format(meson.project_name())
+pkg_config_defines += '-DPACKAGE_BUGREPORT="https://gitlab.freedesktop.org/pkg-config/pkg-config"'
+pkg_config_defines += '-DPACKAGE_NAME="@0@"'.format(meson.project_name())
+pkg_config_defines += '-DPACKAGE_STRING="@0@ @1@"'.format(meson.project_name(), meson.project_version())
+pkg_config_defines += '-DPACKAGE_TARNAME="@0@-@1@"'.format(meson.project_name(), meson.project_version())
+pkg_config_defines += '-DPACKAGE_URL="https://gitlab.freedesktop.org/pkg-config/pkg-config"'
+pkg_config_defines += '-DPACKAGE_VERSION="@0@"'.format(meson.project_version())
+
+if cc.has_header('stdlib.h')
+  pkg_config_defines += '-DSTDC_HEADERS'
+endif
+
+pkg_config_defines += '-DVERSION="@0@"'.format(meson.project_version())
+pkg_config_defines += '-DDARWIN_USE_64_BIT_INODE=1'
+
+libglib_dep = dependency('glib-2.0', required: false, static: get_option('static-glib'))
+
+if not libglib_dep.found() or get_option('build-glib') == 'true'
+  glib = subproject('glib', default_options: ['tests=false'])
+  libglib_dep = glib.get_variable('libglib_dep')
+endif
+
+executable(
+  'pkg-config',
+  [
+    'pkg-config/pkg.h',
+    'pkg-config/pkg.c',
+    'pkg-config/parse.h',
+    'pkg-config/parse.c',
+    'pkg-config/rpmvercmp.c',
+    'pkg-config/rpmvercmp.h',
+    'pkg-config/main.c'
+  ],
+  c_args: pkg_config_defines,
+  dependencies: libglib_dep,
+  install: true,
+)
+
+install_man('pkg-config/pkg-config.1')
+
+install_data(
+  configure_file(
+    input: 'pkg-config/pkg.m4.in',
+    output: 'pkg.m4',
+    configuration: {
+      'VERSION': meson.project_version()
+    }
+  ),
+  install_dir: get_option('datadir') / 'aclocal'
+)

meson_options.txt

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+option(
+  'system-include-path',
+  type: 'string',
+  value: 'auto',
+)
+
+option(
+  'system-library-path',
+  type: 'string',
+  value: 'auto',
+)
+
+option(
+  'enable-define-prefix',
+  type: 'boolean',
+  value: true
+)
+
+option(
+  'enable-indirect-deps',
+  type: 'boolean',
+  value: true
+)
+
+option(
+  'build-glib',
+  type: 'combo',
+  choices: ['auto', 'true'],
+  value: 'auto',
+  description: 'build glib'
+)
+
+option(
+  'static-glib',
+  type: 'boolean',
+  value: false,
+  description: 'link pkg-config with static version of system glib'
+)

subprojects/glib.wrap

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+[wrap-git]
+directory=glib
+url=https://gitlab.gnome.org/GNOME/glib.git
+push-url=ssh://git@gitlab.gnome.org:GNOME/glib.git
+revision=2.75.0
+depth=1