mdbx: deduplicate/reduce amalgamated source code (v0.14.1-356-gadaf1352).

2026-01-28 mdbx: extract `wingetopt` into separated amalgamated file because of different licence.
2026-01-28 mdbx-cmake: update headed notice.
2026-01-28 mdbx: add `amalgam.in` header.
2026-01-28 mdbx-make: fix LDFLAGS for tools.
2026-01-28 mdbx-make: filter-out 'pragma once' from C++-probe.
2026-01-28 mdbx-test: drop unused code.
2026-01-28 mdbx: deduplicate/reduce amalgamated source code.
2026-01-28 mdbx: refine 64x64-to-128 multiplication.
2026-01-27 mdbx-make: cutoff useless C-portion of code from amalgamated `mdbx.c++`

Author: erthink

.gitignore

@@ -1,15 +1,16 @@
 # Copyright (c) 2020-2026 Леонид Юрьев aka Leonid Yuriev <leo@yuriev.ru> ###############################################
 # SPDX-License-Identifier: Apache-2.0
 #
-# Donations are welcome to ETH `0xD104d8f8B2dC312aaD74899F83EBf3EEBDC1EA3A`,
+# libmdbx (aka MDBX) is an extremely fast, compact, powerful, embeddedable, transactional key-value storage engine with
+# open-source code. MDBX has a specific set of properties and capabilities, focused on creating unique lightweight
+# solutions.  Please visit https://libmdbx.dqdkfa.ru for more information, changelog, documentation, C++ API description
+# and links to the original git repo with the source code.  Questions, feedback and suggestions are welcome to the
+# Telegram' group https://t.me/libmdbx.
+#
+# The libmdbx code will forever remain open and with high-quality free support, as far as the life circumstances of the
+# project participants allow. Donations are welcome to ETH `0xD104d8f8B2dC312aaD74899F83EBf3EEBDC1EA3A`,
 # BTC `bc1qzvl9uegf2ea6cwlytnanrscyv8snwsvrc0xfsu`, SOL `FTCTgbHajoLVZGr8aEFWMzx3NDMyS5wXJgfeMTmJznRi`.
 # Всё будет хорошо!
-
-# libmdbx = { Revised and extended descendant of Symas LMDB. }
-# Please see README.md at https://sourcecraft.dev/dqdkfa/libmdbx
-#
-# Libmdbx is superior to LMDB in terms of features and reliability, not inferior in performance. libmdbx works on Linux,
-# FreeBSD, MacOS X and other systems compliant with POSIX.1-2008, but also support Windows as a complementary platform.
 #
 # The next version is under active non-public development and will be released as MithrilDB and libmithrildb for
 # libraries & packages. Admittedly mythical Mithril is resembling silver but being stronger and lighter than steel.
@@ -62,6 +63,7 @@ if(EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/VERSION.json"
    AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx.c"
    AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx.c++"
    AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx.h"
+   AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx-internals.h"
    AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx.h++"
    AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx_chk.c"
    AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mdbx_copy.c"
@@ -758,14 +760,18 @@ endif()
 
 # build mdbx-tools
 if(MDBX_BUILD_TOOLS)
-  set(WINGETOPT_SRC "")
-  if(WIN32)
+  if(MDBX_AMALGAMATED_SOURCE)
+    set(WINGETOPT_SRC ${MDBX_SOURCE_DIR}/mdbx-wingetopt.h)
+  else()
     set(WINGETOPT_SRC ${MDBX_SOURCE_DIR}/tools/wingetopt.c ${MDBX_SOURCE_DIR}/tools/wingetopt.h)
   endif()
+  if(NOT WIN32)
+    set(WINGETOPT_SRC "")
+  endif()
 
   foreach(TOOL chk copy stat dump load drop)
     if(MDBX_AMALGAMATED_SOURCE)
-      add_executable(mdbx_${TOOL} mdbx.h ${MDBX_SOURCE_DIR}/mdbx_${TOOL}.c)
+      add_executable(mdbx_${TOOL} mdbx.h ${MDBX_SOURCE_DIR}/mdbx_${TOOL}.c ${WINGETOPT_SRC})
     else()
       add_executable(mdbx_${TOOL} mdbx.h ${MDBX_SOURCE_DIR}/tools/${TOOL}.c ${WINGETOPT_SRC})
     endif()

CMakeLists.txt

@@ -78,12 +78,12 @@ ifneq ($(make_ge_4_1),1)
 # don't use variable expansion trick as workaround for bugs of GNU Make before 4.1
 LIBS         ?= $(shell $(uname2libs))
 LDFLAGS      ?= $(shell $(uname2ldflags))
-LIB_STDCXXFS ?= $(shell echo '$(cxx_filesystem_probe)' | cat mdbx.h++ - | sed $$'1s/\xef\xbb\xbf//' | $(CXX) -x c++ $(CXXFLAGS) -Wno-error - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs')
+LIB_STDCXXFS ?= $(shell echo '$(cxx_filesystem_probe)' | cat mdbx.h++ - | sed $$'1s/\xef\xbb\xbf//' | grep -v 'pragma once' | $(CXX) -x c++ $(CXXFLAGS) -Wno-error - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs')
 else
 # using variable expansion trick to avoid repeaded probes
 LIBS         ?= $(eval LIBS := $$(shell $$(uname2libs)))$(LIBS)
 LDFLAGS      ?= $(eval LDFLAGS := $$(shell $$(uname2ldflags)))$(LDFLAGS)
-LIB_STDCXXFS ?= $(eval LIB_STDCXXFS := $$(shell echo '$$(cxx_filesystem_probe)' | cat mdbx.h++ - | sed $$$$'1s/\xef\xbb\xbf//' | $(CXX) -x c++ $(CXXFLAGS) -Wno-error - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs'))$(LIB_STDCXXFS)
+LIB_STDCXXFS ?= $(eval LIB_STDCXXFS := $$(shell echo '$$(cxx_filesystem_probe)' | cat mdbx.h++ - | sed $$$$'1s/\xef\xbb\xbf//' | grep -v '#pragma once' | $(CXX) -x c++ $(CXXFLAGS) -Wno-error - -Wl,--allow-multiple-definition -lstdc++fs $(LIBS) $(LDFLAGS) $(EXE_LDFLAGS) -o /dev/null 2>probe4lstdfs.err >/dev/null && echo '-Wl,--allow-multiple-definition -lstdc++fs'))$(LIB_STDCXXFS)
 endif
 
 ifneq ($(make_ge_4_4),1)
@@ -347,34 +347,34 @@ config-gnumake.h: @buildflags.tag mdbx.c $(lastword $(MAKEFILE_LIST)) LICENSE NO
 	&& echo '#define MDBX_BUILD_METADATA "$(MDBX_BUILD_METADATA)"' \
 	) >$@
 
-mdbx-dylib.o: config-gnumake.h mdbx.c mdbx.h $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
+mdbx-dylib.o: config-gnumake.h mdbx.c mdbx.h mdbx-internals.h $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
 	@echo '  CC $@'
 	$(QUIET)$(CC) $(CFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' -DLIBMDBX_EXPORTS=1 -c mdbx.c -o $@
 
-mdbx-static.o: config-gnumake.h mdbx.c mdbx.h $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
+mdbx-static.o: config-gnumake.h mdbx.c mdbx.h mdbx-internals.h $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
 	@echo '  CC $@'
 	$(QUIET)$(CC) $(CFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' -ULIBMDBX_EXPORTS -c mdbx.c -o $@
 
-mdbx++-dylib.o: config-gnumake.h mdbx.c++ $(HEADERS) $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
+mdbx++-dylib.o: config-gnumake.h mdbx.c++ $(HEADERS) mdbx-internals.h $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
 	@echo '  CC $@'
 	$(QUIET)$(CXX) $(CXXFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' -DLIBMDBX_EXPORTS=1 -c mdbx.c++ -o $@
 
-mdbx++-static.o: config-gnumake.h mdbx.c++ $(HEADERS) $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
+mdbx++-static.o: config-gnumake.h mdbx.c++ $(HEADERS) mdbx-internals.h $(lastword $(MAKEFILE_LIST)) LICENSE NOTICE COPYRIGHT
 	@echo '  CC $@'
 	$(QUIET)$(CXX) $(CXXFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' -ULIBMDBX_EXPORTS -c mdbx.c++ -o $@
 
-mdbx_%:	mdbx_%.c mdbx-static.o
+mdbx_%:	mdbx_%.c mdbx-static.o mdbx-wingetopt.h
 	@echo '  CC+LD $@'
-	$(QUIET)$(CC) $(CFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' $^ $(EXE_LDFLAGS) $(LIBS) -o $@
+	$(QUIET)$(CC) $(CFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' $< mdbx-static.o $(LDFLAGS) $(EXE_LDFLAGS) $(LIBS) -o $@
 
 mdbx_%.static: mdbx_%.c mdbx-static.o
 	@echo '  CC+LD $@'
-	$(QUIET)$(CC) $(CFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' $^ $(EXE_LDFLAGS) -static -Wl,--strip-all -o $@
+	$(QUIET)$(CC) $(CFLAGS) $(MDBX_BUILD_OPTIONS) '-DMDBX_CONFIG_H="config-gnumake.h"' $^ $(LDFLAGS) $(EXE_LDFLAGS) -static -Wl,--strip-all -o $@
 
 mdbx_%.static-lto: mdbx_%.c config-gnumake.h mdbx.c mdbx.h
 	@echo '  CC+LD $@'
 	$(QUIET)$(CC) $(CFLAGS) -Os -flto $(MDBX_BUILD_OPTIONS) '-DLIBMDBX_API=' '-DMDBX_CONFIG_H="config-gnumake.h"' \
-		$< mdbx.c $(EXE_LDFLAGS) $(LIBS) -static -Wl,--strip-all -o $@
+		$< mdbx.c $(LDFLAGS) $(EXE_LDFLAGS) $(LIBS) -static -Wl,--strip-all -o $@
 
 check smoke: test
 

GNUmakefile

@@ -1 +1 @@
-{ "git_describe": "v0.14.1-347-g34df8a6f", "git_timestamp": "2026-01-27T16:33:56+03:00", "git_tree": "93d7d95077dd6ce88eabe1259347e95ad56c5bd3", "git_commit": "34df8a6fcd56785fa2309daa0887eebff4f7b7c7", "semver": "0.14.1.347" }
+{ "git_describe": "v0.14.1-356-gadaf1352", "git_timestamp": "2026-01-29T18:08:07+03:00", "git_tree": "246a9ed8d7ad2d018c9bb365d96efd954af8debd", "git_commit": "adaf135226e1d53dd5cf49e1cba09eea202b32b2", "semver": "0.14.1.356" }

VERSION.json

@@ -1,4 +1,5 @@
-/* This is CMake-template for libmdbx's config.h
+/* This file is part of the libmdbx amalgamated source code (v0.14.1-356-gadaf1352 at 2026-01-29T18:08:07+03:00),
+ * it is the template for libmdbx's config.h
  ******************************************************************************/
 
 /* *INDENT-OFF* */