From 057b47555db40293817a756ae1a1c6348b30f9e0 Mon Sep 17 00:00:00 2001
From: Alibek Omarov <a1ba.omarov@gmail.com>
Date: Mon, 7 Oct 2024 18:11:29 +0300
Subject: [PATCH] 3rdparty: bzip2: add wscript for bzip2, check for system-wide
 bzip2, add readme note

---
 3rdparty/bzip2/wscript | 35 +++++++++++++++++++++++++++++++++++
 README.md              |  4 ++--
 engine/wscript         |  2 +-
 wscript                |  8 ++++++++
 4 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 3rdparty/bzip2/wscript

diff --git a/3rdparty/bzip2/wscript b/3rdparty/bzip2/wscript
new file mode 100644
index 00000000..3e8c0cc1
--- /dev/null
+++ b/3rdparty/bzip2/wscript
@@ -0,0 +1,35 @@
+#! /usr/bin/env python
+# encoding: utf-8
+
+BZIP_CHECK='''#include <bzlib.h>
+int main(void) { return BZ2_bzlibVersion() != NULL; }
+'''
+
+def options(opt):
+	pass
+
+def configure(conf):
+	conf.define('_GNU_SOURCE', 1)
+
+	if conf.env.DEST_OS == 'win32':
+		conf.define('BZ_LCCWIN32', 1)
+	else:
+		conf.define('BZ_UNIX', 1)
+
+def build(bld):
+	bld(
+		features = 'subst',
+		source = 'bzip2/bz_version.h.in',
+		target = 'bz_version.h',
+		BZ_VERSION='1.1.0-fwgs'
+	)
+
+	bld.stlib(
+		source = bld.path.ant_glob(['bzip2/*.c']),
+		target = 'bzip2',
+		use = 'bz_version.h',
+		features = 'c',
+		includes = ['bzip2/', '.'],
+		subsystem = bld.env.MSVC_SUBSYSTEM,
+		export_includes = ['bzip2/']
+	)
diff --git a/README.md b/README.md
index 934153cc..8c04853f 100644
--- a/README.md
+++ b/README.md
@@ -67,9 +67,9 @@ This repository contains our fork of HLSDK and restored source code for Half-Lif
 `$ sudo dpkg --add-architecture i386`
 * Install development tools
   * For 32-bit engine on amd64: \
-    `$ sudo apt install build-essential gcc-multilib g++-multilib python libsdl2-dev:i386 libfontconfig-dev:i386 libfreetype6-dev:i386 libopus-dev:i386`
+    `$ sudo apt install build-essential gcc-multilib g++-multilib python libsdl2-dev:i386 libfontconfig-dev:i386 libfreetype6-dev:i386 libopus-dev:i386 libbz2-dev:i386`
   * For everything else: \
-    `$ sudo apt install build-essential python libsdl2-dev libfontconfig-dev libfreetype6-dev libopus-dev`
+    `$ sudo apt install build-essential python libsdl2-dev libfontconfig-dev libfreetype6-dev libopus-dev libbz2-dev`
 * Clone this repostory:
 `$ git clone --recursive https://github.com/FWGS/xash3d-fwgs`
 
diff --git a/engine/wscript b/engine/wscript
index 14a07035..16075adb 100644
--- a/engine/wscript
+++ b/engine/wscript
@@ -222,7 +222,7 @@ def build(bld):
 			'client/*.c',
 			'client/vgui/*.c',
 			'client/avi/*.c'])
-		libs += ['opus']
+		libs += ['opus', 'bzip2']
 
 	includes = ['server', 'client', 'client/vgui' ]
 
diff --git a/wscript b/wscript
index c14d2453..4f79c96f 100644
--- a/wscript
+++ b/wscript
@@ -79,6 +79,7 @@ SUBDIRS = [
 	Subproject('ref/gl',                lambda x: not x.env.DEDICATED and (x.env.GL or x.env.NANOGL or x.env.GLWES or x.env.GL4ES)),
 	Subproject('ref/soft',              lambda x: not x.env.DEDICATED and not x.env.SUPPORT_BSP2_FORMAT and x.env.SOFT),
 	Subproject('ref/null',              lambda x: not x.env.DEDICATED and x.env.NULL),
+	Subproject('3rdparty/bzip2',        lambda x: not x.env.DEDICATED and not x.env.HAVE_SYSTEM_BZ2),
 	Subproject('3rdparty/mainui',       lambda x: not x.env.DEDICATED),
 	Subproject('3rdparty/vgui_support', lambda x: not x.env.DEDICATED),
 #	Subproject('3rdparty/freevgui',     lambda x: not x.env.DEDICATED),
@@ -459,6 +460,13 @@ int main(void) { return !opus_custom_encoder_init((OpusCustomEncoder *)1, (const
 			if conf.check_cc(msg='Checking if opus supports custom modes', defines='CUSTOM_MODES=1', use='opus werror', fragment=frag, mandatory=False):
 				conf.env.HAVE_SYSTEM_OPUS = True
 
+		# search for bzip2
+		BZIP2_CHECK='''#include <bzlib.h>
+int main(void) { return (int)BZ2_bzlibVersion(); }'''
+
+		if conf.check_cc(lib='bz2', fragment=BZIP2_CHECK, uselib_store='bzip2', mandatory=False):
+			conf.env.HAVE_SYSTEM_BZ2 = True
+
 	conf.define('XASH_LOW_MEMORY', conf.options.LOW_MEMORY)
 
 	for i in SUBDIRS: