From 90dd4d4c6b1cedec338ff5b375fffca93700f7bc Mon Sep 17 00:00:00 2001
From: milek7 <me@milek7.pl>
Date: Tue, 8 Dec 2020 01:03:31 +0100
Subject: [PATCH] Add liblzma port

---
Source: https://github.com/emscripten-core/emscripten/pull/12990

Modifed by OpenTTD to have the bare minimum needed to work. Otherwise there
are constantly conflicts when trying to apply this patch to different versions
of emsdk.

diff --git a/embuilder.py b/embuilder.py
index 818262190ed..ab7d5adb7b2 100755
--- a/embuilder.py
+++ b/embuilder.py
@@ -60,6 +60,7 @@
     'harfbuzz',
     'icu',
     'libjpeg',
+    'liblzma',
     'libpng',
     'ogg',
     'regal',
@@ -197,6 +198,8 @@ def main():
       build_port('ogg', libname('libogg'))
     elif what == 'libjpeg':
       build_port('libjpeg', libname('libjpeg'))
+    elif what == 'liblzma':
+      build_port('liblzma', libname('liblzma'))
     elif what == 'libpng':
       build_port('libpng', libname('libpng'))
     elif what == 'sdl2':
diff --git a/src/settings.js b/src/settings.js
index 61cd98939ba..be6fcb678c6 100644
--- a/src/settings.js
+++ b/src/settings.js
@@ -1197,6 +1197,9 @@ var USE_BZIP2 = 0;
 // 1 = use libjpeg from emscripten-ports
 var USE_LIBJPEG = 0;

+// 1 = use liblzma from emscripten-ports
+var USE_LIBLZMA = 0;
+
 // 1 = use libpng from emscripten-ports
 var USE_LIBPNG = 0;

diff --git a/tools/ports/liblzma.py b/tools/ports/liblzma.py
new file mode 100644
index 00000000000..e9567ef36ff
--- /dev/null
+++ b/tools/ports/liblzma.py
@@ -0,0 +1,160 @@
+# Copyright 2020 The Emscripten Authors.  All rights reserved.
+# Emscripten is available under two separate licenses, the MIT license and the
+# University of Illinois/NCSA Open Source License.  Both these licenses can be
+# found in the LICENSE file.
+
+import os
+import shutil
+
+VERSION = '5.2.5'
+HASH = '7443674247deda2935220fbc4dfc7665e5bb5a260be8ad858c8bd7d7b9f0f868f04ea45e62eb17c0a5e6a2de7c7500ad2d201e2d668c48ca29bd9eea5a73a3ce'
+
+
+def needed(settings):
+  return settings.USE_LIBLZMA
+
+
+def get(ports, settings, shared):
+  libname = ports.get_lib_name('liblzma')
+  ports.fetch_project('liblzma', 'https://tukaani.org/xz/xz-' + VERSION + '.tar.gz', 'xz-' + VERSION, sha512hash=HASH)
+
+  def create():
+    ports.clear_project_build('liblzma')
+
+    source_path = os.path.join(ports.get_dir(), 'liblzma', 'xz-' + VERSION)
+    dest_path = os.path.join(ports.get_build_dir(), 'liblzma')
+
+    shared.try_delete(dest_path)
+    os.makedirs(dest_path)
+    shutil.rmtree(dest_path, ignore_errors=True)
+    shutil.copytree(source_path, dest_path)
+
+    build_flags = ['-DHAVE_CONFIG_H', '-DTUKLIB_SYMBOL_PREFIX=lzma_', '-fvisibility=hidden']
+    exclude_dirs = ['xzdec', 'xz', 'lzmainfo']
+    exclude_files = ['crc32_small.c', 'crc64_small.c', 'crc32_tablegen.c', 'crc64_tablegen.c', 'price_tablegen.c', 'fastpos_tablegen.c'
+                     'tuklib_exit.c', 'tuklib_mbstr_fw.c', 'tuklib_mbstr_width.c', 'tuklib_open_stdxxx.c', 'tuklib_progname.c']
+    include_dirs_rel = ['../common', 'api', 'common', 'check', 'lz', 'rangecoder', 'lzma', 'delta', 'simple']
+
+    open(os.path.join(dest_path, 'src', 'config.h'), 'w').write(config_h)
+
+    final = os.path.join(dest_path, libname)
+    include_dirs = [os.path.join(dest_path, 'src', 'liblzma', p) for p in include_dirs_rel]
+    ports.build_port(os.path.join(dest_path, 'src'), final, flags=build_flags, exclude_dirs=exclude_dirs, exclude_files=exclude_files, includes=include_dirs)
+
+    ports.install_headers(os.path.join(dest_path, 'src', 'liblzma', 'api'), 'lzma.h')
+    ports.install_headers(os.path.join(dest_path, 'src', 'liblzma', 'api', 'lzma'), '*.h', 'lzma')
+
+    return final
+
+  return [shared.Cache.get(libname, create, what='port')]
+
+
+def clear(ports, settings, shared):
+  shared.Cache.erase_file(ports.get_lib_name('liblzma'))
+
+
+def process_args(ports):
+  return []
+
+
+def show():
+  return 'liblzma (USE_LIBLZMA=1; public domain)'
+
+
+config_h = r'''
+#define ASSUME_RAM 128
+#define ENABLE_NLS 1
+#define HAVE_CHECK_CRC32 1
+#define HAVE_CHECK_CRC64 1
+#define HAVE_CHECK_SHA256 1
+#define HAVE_CLOCK_GETTIME 1
+#define HAVE_DCGETTEXT 1
+#define HAVE_DECL_CLOCK_MONOTONIC 1
+#define HAVE_DECL_PROGRAM_INVOCATION_NAME 1
+#define HAVE_DECODERS 1
+#define HAVE_DECODER_ARM 1
+#define HAVE_DECODER_ARMTHUMB 1
+#define HAVE_DECODER_DELTA 1
+#define HAVE_DECODER_IA64 1
+#define HAVE_DECODER_LZMA1 1
+#define HAVE_DECODER_LZMA2 1
+#define HAVE_DECODER_POWERPC 1
+#define HAVE_DECODER_SPARC 1
+#define HAVE_DECODER_X86 1
+#define HAVE_DLFCN_H 1
+#define HAVE_ENCODERS 1
+#define HAVE_ENCODER_ARM 1
+#define HAVE_ENCODER_ARMTHUMB 1
+#define HAVE_ENCODER_DELTA 1
+#define HAVE_ENCODER_IA64 1
+#define HAVE_ENCODER_LZMA1 1
+#define HAVE_ENCODER_LZMA2 1
+#define HAVE_ENCODER_POWERPC 1
+#define HAVE_ENCODER_SPARC 1
+#define HAVE_ENCODER_X86 1
+#define HAVE_FCNTL_H 1
+#define HAVE_FUTIMENS 1
+#define HAVE_GETOPT_H 1
+#define HAVE_GETOPT_LONG 1
+#define HAVE_GETTEXT 1
+#define HAVE_IMMINTRIN_H 1
+#define HAVE_INTTYPES_H 1
+#define HAVE_LIMITS_H 1
+#define HAVE_MBRTOWC 1
+#define HAVE_MEMORY_H 1
+#define HAVE_MF_BT2 1
+#define HAVE_MF_BT3 1
+#define HAVE_MF_BT4 1
+#define HAVE_MF_HC3 1
+#define HAVE_MF_HC4 1
+#define HAVE_OPTRESET 1
+#define HAVE_POSIX_FADVISE 1
+#define HAVE_PTHREAD_CONDATTR_SETCLOCK 1
+#define HAVE_PTHREAD_PRIO_INHERIT 1
+#define HAVE_STDBOOL_H 1
+#define HAVE_STDINT_H 1
+#define HAVE_STDLIB_H 1
+#define HAVE_STRINGS_H 1
+#define HAVE_STRING_H 1
+#define HAVE_STRUCT_STAT_ST_ATIM_TV_NSEC 1
+#define HAVE_SYS_PARAM_H 1
+#define HAVE_SYS_STAT_H 1
+#define HAVE_SYS_TIME_H 1
+#define HAVE_SYS_TYPES_H 1
+#define HAVE_UINTPTR_T 1
+#define HAVE_UNISTD_H 1
+#define HAVE_VISIBILITY 1
+#define HAVE_WCWIDTH 1
+#define HAVE__BOOL 1
+#define HAVE___BUILTIN_ASSUME_ALIGNED 1
+#define HAVE___BUILTIN_BSWAPXX 1
+#define MYTHREAD_POSIX 1
+#define NDEBUG 1
+#define PACKAGE "xz"
+#define PACKAGE_BUGREPORT "lasse.collin@tukaani.org"
+#define PACKAGE_NAME "XZ Utils"
+#define PACKAGE_STRING "XZ Utils 5.2.5"
+#define PACKAGE_TARNAME "xz"
+#define PACKAGE_VERSION "5.2.5"
+#define SIZEOF_SIZE_T 4
+#define STDC_HEADERS 1
+#define TUKLIB_CPUCORES_SYSCONF 1
+#define TUKLIB_FAST_UNALIGNED_ACCESS 1
+#define TUKLIB_PHYSMEM_SYSCONF 1
+#ifndef _ALL_SOURCE
+# define _ALL_SOURCE 1
+#endif
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE 1
+#endif
+#ifndef _POSIX_PTHREAD_SEMANTICS
+# define _POSIX_PTHREAD_SEMANTICS 1
+#endif
+#ifndef _TANDEM_SOURCE
+# define _TANDEM_SOURCE 1
+#endif
+#ifndef __EXTENSIONS__
+# define __EXTENSIONS__ 1
+#endif
+#define VERSION "5.2.5"
+'''