diff --git a/libraries/lzma/C/7zTypes.h b/libraries/lzma/C/7zTypes.h
index 3f66a7b51..fe4fde3ff 100644
--- a/libraries/lzma/C/7zTypes.h
+++ b/libraries/lzma/C/7zTypes.h
@@ -1,5 +1,5 @@
 /* 7zTypes.h -- Basic types
-2021-07-13 : Igor Pavlov : Public domain */
+2021-12-25 : Igor Pavlov : Public domain */
 
 #ifndef __7Z_TYPES_H
 #define __7Z_TYPES_H
@@ -105,6 +105,7 @@ typedef int WRes;
 
 // we use errno equivalents for some WIN32 errors:
 
+#define ERROR_INVALID_PARAMETER     EINVAL
 #define ERROR_INVALID_FUNCTION      EINVAL
 #define ERROR_ALREADY_EXISTS        EEXIST
 #define ERROR_FILE_EXISTS           EEXIST
diff --git a/libraries/lzma/C/7zVersion.h b/libraries/lzma/C/7zVersion.h
index a8cbdb9c6..e9363d37b 100644
--- a/libraries/lzma/C/7zVersion.h
+++ b/libraries/lzma/C/7zVersion.h
@@ -1,7 +1,7 @@
 #define MY_VER_MAJOR 21
-#define MY_VER_MINOR 06
+#define MY_VER_MINOR 07
 #define MY_VER_BUILD 0
-#define MY_VERSION_NUMBERS "21.06"
+#define MY_VERSION_NUMBERS "21.07"
 #define MY_VERSION MY_VERSION_NUMBERS
 
 #ifdef MY_CPU_NAME
@@ -10,7 +10,7 @@
   #define MY_VERSION_CPU MY_VERSION
 #endif
 
-#define MY_DATE "2021-11-24"
+#define MY_DATE "2021-12-26"
 #undef MY_COPYRIGHT
 #undef MY_VERSION_COPYRIGHT_DATE
 #define MY_AUTHOR_NAME "Igor Pavlov"
diff --git a/libraries/lzma/C/LzFindMt.c b/libraries/lzma/C/LzFindMt.c
index da339ebf5..4e67fc3f2 100644
--- a/libraries/lzma/C/LzFindMt.c
+++ b/libraries/lzma/C/LzFindMt.c
@@ -1,5 +1,5 @@
 /* LzFindMt.c -- multithreaded Match finder for LZ algorithms
-2021-07-12 : Igor Pavlov : Public domain */
+2021-12-21 : Igor Pavlov : Public domain */
 
 #include "Precomp.h"
 
@@ -832,8 +832,8 @@ void MatchFinderMt_Destruct(CMatchFinderMt *p, ISzAllocPtr alloc)
 #define kBtBufferSize (kMtBtBlockSize * kMtBtNumBlocks)
 
 
-static THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE HashThreadFunc2(void *p) { HashThreadFunc((CMatchFinderMt *)p);  return 0; }
-static THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE BtThreadFunc2(void *p)
+static THREAD_FUNC_DECL HashThreadFunc2(void *p) { HashThreadFunc((CMatchFinderMt *)p);  return 0; }
+static THREAD_FUNC_DECL BtThreadFunc2(void *p)
 {
   Byte allocaDummy[0x180];
   unsigned i = 0;
diff --git a/libraries/lzma/C/Threads.c b/libraries/lzma/C/Threads.c
index 7b4f5b5dc..58eb90ffa 100644
--- a/libraries/lzma/C/Threads.c
+++ b/libraries/lzma/C/Threads.c
@@ -1,11 +1,11 @@
 /* Threads.c -- multithreading library
-2021-07-12 : Igor Pavlov : Public domain */
+2021-12-21 : Igor Pavlov : Public domain */
 
 #include "Precomp.h"
 
 #ifdef _WIN32
 
-#ifndef UNDER_CE
+#ifndef USE_THREADS_CreateThread
 #include <process.h>
 #endif
 
@@ -63,10 +63,10 @@ WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param)
 {
   /* Windows Me/98/95: threadId parameter may not be NULL in _beginthreadex/CreateThread functions */
 
-  #ifdef UNDER_CE
+  #ifdef USE_THREADS_CreateThread
 
   DWORD threadId;
-  *p = CreateThread(0, 0, func, param, 0, &threadId);
+  *p = CreateThread(NULL, 0, func, param, 0, &threadId);
   
   #else
   
@@ -82,7 +82,7 @@ WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param)
 
 WRes Thread_Create_With_Affinity(CThread *p, THREAD_FUNC_TYPE func, LPVOID param, CAffinityMask affinity)
 {
-  #ifdef UNDER_CE
+  #ifdef USE_THREADS_CreateThread
 
   UNUSED_VAR(affinity)
   return Thread_Create(p, func, param);
diff --git a/libraries/lzma/C/Threads.h b/libraries/lzma/C/Threads.h
index 9e70ecab4..89ecb92be 100644
--- a/libraries/lzma/C/Threads.h
+++ b/libraries/lzma/C/Threads.h
@@ -1,5 +1,5 @@
 /* Threads.h -- multithreading library
-2021-07-12 : Igor Pavlov : Public domain */
+2021-12-21 : Igor Pavlov : Public domain */
 
 #ifndef __7Z_THREADS_H
 #define __7Z_THREADS_H
@@ -38,8 +38,14 @@ typedef HANDLE CThread;
 #define Thread_Close(p) HandlePtr_Close(p)
 // #define Thread_Wait(p) Handle_WaitObject(*(p))
 
+#ifdef UNDER_CE
+  // if (USE_THREADS_CreateThread is      defined), we use _beginthreadex()
+  // if (USE_THREADS_CreateThread is not definned), we use CreateThread()
+  #define USE_THREADS_CreateThread
+#endif
+
 typedef
-    #ifdef UNDER_CE
+    #ifdef USE_THREADS_CreateThread
       DWORD
     #else
       unsigned
@@ -90,7 +96,30 @@ typedef UInt64 CCpuSet;
 
 
 #define THREAD_FUNC_CALL_TYPE MY_STD_CALL
-#define THREAD_FUNC_DECL THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE
+
+#if defined(_WIN32) && defined(__GNUC__)
+/* GCC compiler for x86 32-bit uses the rule:
+   the stack is 16-byte aligned before CALL instruction for function calling.
+   But only root function main() contains instructions that
+   set 16-byte alignment for stack pointer. And another functions
+   just keep alignment, if it was set in some parent function.
+   
+   The problem:
+    if we create new thread in MinGW (GCC) 32-bit x86 via _beginthreadex() or CreateThread(),
+       the root function of thread doesn't set 16-byte alignment.
+       And stack frames in all child functions also will be unaligned in that case.
+   
+   Here we set (force_align_arg_pointer) attribute for root function of new thread.
+   Do we need (force_align_arg_pointer) also for another systems?  */
+  
+  #define THREAD_FUNC_ATTRIB_ALIGN_ARG __attribute__((force_align_arg_pointer))
+  // #define THREAD_FUNC_ATTRIB_ALIGN_ARG // for debug : bad alignment in SSE functions
+#else
+  #define THREAD_FUNC_ATTRIB_ALIGN_ARG
+#endif
+
+#define THREAD_FUNC_DECL  THREAD_FUNC_ATTRIB_ALIGN_ARG THREAD_FUNC_RET_TYPE THREAD_FUNC_CALL_TYPE
+
 typedef THREAD_FUNC_RET_TYPE (THREAD_FUNC_CALL_TYPE * THREAD_FUNC_TYPE)(void *);
 WRes Thread_Create(CThread *p, THREAD_FUNC_TYPE func, LPVOID param);
 WRes Thread_Create_With_Affinity(CThread *p, THREAD_FUNC_TYPE func, LPVOID param, CAffinityMask affinity);
diff --git a/libraries/lzma/DOC/lzma-history.txt b/libraries/lzma/DOC/lzma-history.txt
index ae380a159..0963c7bf7 100644
--- a/libraries/lzma/DOC/lzma-history.txt
+++ b/libraries/lzma/DOC/lzma-history.txt
@@ -1,6 +1,15 @@
 HISTORY of the LZMA SDK
 -----------------------
 
+21.07          2021-12-26
+-------------------------
+- New switches: -spm and -im!{file_path} to exclude directories from processing 
+    for specified paths that don't contain path separator character at the end of path.
+- The sorting order of files in archives was slightly changed to be more consistent
+  for cases where the name of some directory is the same as the prefix part of the name
+  of another directory or file.
+
+
 21.06          2021-11-24
 -------------------------
 - Bug in LZMA encoder in file LzmaEnc.c was fixed:
diff --git a/libraries/lzma/DOC/lzma-sdk.txt b/libraries/lzma/DOC/lzma-sdk.txt
index 6bbb90f0c..9621c8d5d 100644
--- a/libraries/lzma/DOC/lzma-sdk.txt
+++ b/libraries/lzma/DOC/lzma-sdk.txt
@@ -1,4 +1,4 @@
-LZMA SDK 21.06
+LZMA SDK 21.07
 --------------
 
 LZMA SDK provides the documentation, samples, header files,