Add info sources for dependency versions

README.md

@@ -62,3 +62,41 @@ This script doesn't accept parameters, but the following environment variables a
 | `SOURCES_PATH` | Where to put the downloaded sources for compilation                                                          |
 | `VS_EDITION` | Edition of Visual Studio installed, set to `Community` by default                                              |
 | `PM_VERSION_MAJOR` | Major version of PocketMine-MP to build extensions for (defaults to 4, can be `4` or `5`)                |
+
+## For developers: Version info sources
+### Libraries
+
+| Name of package | Version info URL | Needed for | Notes |
+|:----------------|:-----------------|:-----------|:------|
+| zlib | https://github.com/madler/zlib/tags | Compression | |
+| gmp | https://gmplib.org/ | Big integer math for Bedrock packet encryption | Hosted at [DependencyMirror](https://github.com/pmmp/DependencyMirror/releases) to avoid service outages |
+| curl | https://github.com/curl/curl/releases | Web requests | |
+| libyaml | https://github.com/yaml/libyaml/releases | Parsing YAML config files | |
+| leveldb | https://github.com/pmmp/leveldb/commits/mojang-compatible/ | Bedrock world support | Custom version based on google/leveldb with minimum required changes to support MCPE worlds |
+| libxml | https://gitlab.gnome.org/GNOME/libxml2/-/releases | XML parsing support for UPnP | Hosted at [DependencyMirror](https://github.com/pmmp/DependencyMirror/releases) to avoid service outages |
+| libpng | https://sourceforge.net/projects/libpng/files/libpng16/ | php-gd, plugin use only | Hosted at [DependencyMirror](https://github.com/pmmp/DependencyMirror/releases) to avoid service outages |
+| libjpeg | https://ijg.org/ | php-gd, plugin use only | Hosted at [DependencyMirror](https://github.com/pmmp/DependencyMirror/releases) to avoid service outages |
+| openssl | https://github.com/openssl/openssl/releases | Bedrock packet encryption, secure web requests | |
+| libzip | https://github.com/nih-at/libzip/releases | Resource packs | |
+| sqlite3 | https://sqlite.org/download.html | Plugin use only | Hosted at [DependencyMirror](https://github.com/pmmp/DependencyMirror/releases) to avoid service outages |
+| libdeflate | https://github.com/ebiggers/libdeflate/blob/master/NEWS.md | Faster alternative to zlib for network use | |
+| pthreads4w | https://sourceforge.net/projects/pthreads4w/files/ | Needed by ext-pmmpthread on Windows | Hosted at [DependencyMirror](https://github.com/pmmp/DependencyMirror/releases) to avoid service outages |
+
+### PHP & extensions
+
+| Name of package | Version info URL | Needed for | Notes |
+|:----------------|:-----------------|:-----------|:------|
+| PHP | https://www.php.net/releases/?json&version=8.2 | Everything | Replace 8.2 with your chosen version |
+| pmmpthread | https://github.com/pmmp/ext-pmmpthread/releases | PHP threading | |
+| yaml | https://github.com/php/pecl-file_formats-yaml/tags | YAML config parsing | Yes, the mix of - and _ is intentional. Don't ask me. |
+| leveldb | https://github.com/pmmp/php-leveldb/commits/pmmp-mojang-compatible/ | Bedrock world support | Custom version to provide `LEVELDB_ZLIB_RAW_COMPRESSION` support |
+| chunkutils2 | https://github.com/pmmp/ext-chunkutils2/releases | `PalettedBlockArray` and other low-level stuff | |
+| xdebug | https://github.com/xdebug/xdebug/releases | Debugging | Not needed for production |
+| igbinary | https://github.com/igbinary/igbinary/releases | Faster serialization, mostly for moving stuff between threads | Non-essential, could be ditched if necessary |
+| crypto | https://github.com/bukka/php-crypto/tags | Bedrock packet encryption | |
+| recursionguard | https://github.com/pmmp/ext-recursionguard/releases | Debugging | Not needed for production |
+| libdeflate | https://github.com/pmmp/ext-libdeflate/releases | Faster network compression | Non-essential but provides significant performance advantage over zlib |
+| morton | https://github.com/pmmp/ext-morton | Packing X/Z and X/Y/Z coordinates into ints in a format suitable for PHP array keys | Needed for performance |
+| xxhash | https://github.com/pmmp/ext-xxhash/releases | Not currently used | Could be replaced by `hash()` in recent versions of PHP but this extension has much better performance |
+| arraydebug | https://github.com/pmmp/ext-arraydebug/tags | Debugging array hash collisions | |
+| encoding | https://github.com/pmmp/ext-encoding/releases | Not currently used | Experimental, intended to replace `BinaryUtils` but never finished |