Litecoin: enable support for SSE2 instructions in scrypt via configure --enable-sse2

.gitignore

@@ -1,12 +1,12 @@
 *.tar.gz
 
 *.exe
-src/bitcoin
-src/bitcoind
-src/bitcoin-cli
-src/bitcoin-tx
-src/test/test_bitcoin
-src/qt/test/test_bitcoin-qt
+src/litecoin
+src/litecoind
+src/litecoin-cli
+src/litecoin-tx
+src/test/test_litecoin
+src/qt/test/test_litecoin-qt
 
 # autoreconf
 Makefile.in
@@ -55,7 +55,7 @@ src/qt/test/moc*.cpp
 *.o
 *.o-*
 *.patch
-.bitcoin
+.litecoin
 *.a
 *.pb.cc
 *.pb.h
@@ -74,12 +74,12 @@ src/qt/test/moc*.cpp
 # Compilation and Qt preprocessor part
 *.qm
 Makefile
-bitcoin-qt
-Bitcoin-Qt.app
+litecoin-qt
+Litecoin-Qt.app
 
 # Unit-tests
 Makefile.test
-bitcoin-qt_test
+litecoin-qt_test
 src/test/buildenv.py
 
 # Resources cpp

.travis.yml

@@ -3,7 +3,7 @@ dist: trusty
 
 #workaround for https://github.com/travis-ci/travis-ci/issues/5227
 addons:
-  hostname: bitcoin-tester
+  hostname: litecoin-tester
 
 os: linux
 language: generic
@@ -25,19 +25,20 @@ env:
     - SDK_URL=https://bitcoincore.org/depends-sources/sdks
     - PYTHON_DEBUG=1
     - WINEDEBUG=fixme-all
+    - LITECOIN_SCRYPT=0
   matrix:
 # ARM
     - HOST=arm-linux-gnueabihf PACKAGES="g++-arm-linux-gnueabihf" DEP_OPTS="NO_QT=1" CHECK_DOC=1 GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
 # Win32
-    - HOST=i686-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-i686 wine1.6 bc openjdk-7-jre-headless" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
+    - HOST=i686-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 python3-dev python3-pip nsis g++-mingw-w64-i686 wine1.6 bc openjdk-7-jre-headless" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports" LITECOIN_SCRYPT=1
 # 32-bit + dash
-    - HOST=i686-pc-linux-gnu PACKAGES="g++-multilib bc python3-zmq openjdk-7-jre-headless" DEP_OPTS="NO_QT=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++" USE_SHELL="/bin/dash"
+    - HOST=i686-pc-linux-gnu PACKAGES="g++-multilib bc python3-pip python3-dev python3-zmq openjdk-7-jre-headless" DEP_OPTS="NO_QT=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports LDFLAGS=-static-libstdc++" USE_SHELL="/bin/dash" LITECOIN_SCRYPT=1 
 # Win64
-    - HOST=x86_64-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 nsis g++-mingw-w64-x86-64 wine1.6 bc openjdk-7-jre-headless" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports"
+    - HOST=x86_64-w64-mingw32 DPKG_ADD_ARCH="i386" DEP_OPTS="NO_QT=1" PACKAGES="python3 python3-dev python3-pip nsis g++-mingw-w64-x86-64 wine1.6 bc openjdk-7-jre-headless" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-reduce-exports" LITECOIN_SCRYPT=1 
 # bitcoind
-    - HOST=x86_64-unknown-linux-gnu PACKAGES="bc python3-zmq openjdk-7-jre-headless" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER"
+    - HOST=x86_64-unknown-linux-gnu PACKAGES="bc python3-pip python3-dev python3-zmq openjdk-7-jre-headless" DEP_OPTS="NO_QT=1 NO_UPNP=1 DEBUG=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-zmq --enable-glibc-back-compat --enable-reduce-exports CPPFLAGS=-DDEBUG_LOCKORDER" LITECOIN_SCRYPT=1 
 # No wallet
-    - HOST=x86_64-unknown-linux-gnu PACKAGES=" openjdk-7-jre-headless python3" DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports"
+    - HOST=x86_64-unknown-linux-gnu PACKAGES=" openjdk-7-jre-headless python3 python3-dev python3-pip" DEP_OPTS="NO_WALLET=1" RUN_TESTS=true GOAL="install" BITCOIN_CONFIG="--enable-glibc-back-compat --enable-reduce-exports" LITECOIN_SCRYPT=1 
 # Cross-Mac
     - HOST=x86_64-apple-darwin11 PACKAGES="cmake imagemagick libcap-dev librsvg2-bin libz-dev libbz2-dev libtiff-tools python-dev" BITCOIN_CONFIG="--enable-reduce-exports" OSX_SDK=10.11 GOAL="deploy"
 
@@ -48,6 +49,7 @@ install:
     - if [ -n "$DPKG_ADD_ARCH" ]; then sudo dpkg --add-architecture "$DPKG_ADD_ARCH" ; fi
     - if [ -n "$PACKAGES" ]; then travis_retry sudo apt-get update; fi
     - if [ -n "$PACKAGES" ]; then travis_retry sudo apt-get install --no-install-recommends --no-upgrade -qq $PACKAGES; fi
+    - if [ "$LITECOIN_SCRYPT" = 1 ]; then travis_retry sudo pip3 install litecoin_scrypt; fi
 before_script:
     - unset CC; unset CXX
     - if [ "$CHECK_DOC" = 1 ]; then contrib/devtools/check-doc.py; fi

CONTRIBUTING.md

@@ -1,7 +1,7 @@
-Contributing to Bitcoin Core
+Contributing to Litecoin Core
 ============================
 
-The Bitcoin Core project operates an open contributor model where anyone is welcome to contribute towards development in the form of peer review, testing and patches. This document explains the practical process and guidelines for contributing.
+The Litecoin Core project operates an open contributor model where anyone is welcome to contribute towards development in the form of peer review, testing and patches. This document explains the practical process and guidelines for contributing.
 
 Firstly in terms of structure, there is no particular concept of “Core developers” in the sense of privileged people. Open source often naturally revolves around meritocracy where longer term contributors gain more trust from the developer community. However, some hierarchy is necessary for practical purposes. As such there are repository “maintainers” who are responsible for merging pull requests as well as a “lead maintainer” who is responsible for the release cycle, overall merging, moderation and appointment of maintainers.
 
@@ -81,9 +81,9 @@ Project maintainers aim for a quick turnaround on refactoring pull requests, so
 "Decision Making" Process
 -------------------------
 
-The following applies to code changes to the Bitcoin Core project (and related projects such as libsecp256k1), and is not to be confused with overall Bitcoin Network Protocol consensus changes.
+The following applies to code changes to the Litecoin Core project (and related projects such as libsecp256k1), and is not to be confused with overall Litecoin Network Protocol consensus changes.
 
-Whether a pull request is merged into Bitcoin Core rests with the project merge maintainers and ultimately the project lead.
+Whether a pull request is merged into Litecoin Core rests with the project merge maintainers and ultimately the project lead.
 
 Maintainers will take into consideration if a patch is in line with the general principles of the project; meets the minimum standards for inclusion; and will judge the general consensus of contributors.
 
@@ -96,7 +96,7 @@ In general, all pull requests must:
   - not break the existing test suite;
   - where bugs are fixed, where possible, there should be unit tests demonstrating the bug and also proving the fix. This helps prevent regression.
 
-Patches that change Bitcoin consensus rules are considerably more involved than normal because they affect the entire ecosystem and so must be preceded by extensive mailing list discussions and have a numbered BIP. While each case will be different, one should be prepared to expend more time and effort than for other kinds of patches because of increased peer review and consensus building requirements.
+Patches that change Litecoin consensus rules are considerably more involved than normal because they affect the entire ecosystem and so must be preceded by extensive mailing list discussions and have a numbered BIP. While each case will be different, one should be prepared to expend more time and effort than for other kinds of patches because of increased peer review and consensus building requirements.
 
 
 ###Peer Review
@@ -115,10 +115,10 @@ Project maintainers reserve the right to weigh the opinions of peer reviewers us
 
 Where a patch set affects consensus critical code, the bar will be set much higher in terms of discussion and peer review requirements, keeping in mind that mistakes could be very costly to the wider community. This includes refactoring of consensus critical code.
 
-Where a patch set proposes to change the Bitcoin consensus, it must have been discussed extensively on the mailing list and IRC, be accompanied by a widely discussed BIP and have a generally widely perceived technical consensus of being a worthwhile change based on the judgement of the maintainers.
+Where a patch set proposes to change the Litecoin consensus, it must have been discussed extensively on the mailing list and IRC, be accompanied by a widely discussed BIP and have a generally widely perceived technical consensus of being a worthwhile change based on the judgement of the maintainers.
 
 
 Release Policy
 --------------
 
-The project leader is the release manager for each Bitcoin Core release.
+The project leader is the release manager for each Litecoin Core release.

INSTALL.md

@@ -0,0 +1,5 @@
+Building Litecoin
+================
+
+See doc/build-*.md for instructions on building the various
+elements of the Litecoin Core reference implementation of Litecoin.

Makefile.am

@@ -1,3 +1,7 @@
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 ACLOCAL_AMFLAGS = -I build-aux/m4
 SUBDIRS = src
 .PHONY: deploy FORCE
@@ -18,7 +22,7 @@ BITCOIN_WIN_INSTALLER=$(PACKAGE)-$(PACKAGE_VERSION)-win$(WINDOWS_BITS)-setup$(EX
 empty :=
 space := $(empty) $(empty)
 
-OSX_APP=Bitcoin-Qt.app
+OSX_APP=Litecoin-Qt.app
 OSX_VOLNAME = $(subst $(space),-,$(PACKAGE_NAME))
 OSX_DMG = $(OSX_VOLNAME).dmg
 OSX_BACKGROUND_SVG=background.svg
@@ -83,7 +87,7 @@ $(OSX_APP)/Contents/Resources/bitcoin.icns: $(OSX_INSTALLER_ICONS)
 	$(MKDIR_P) $(@D)
 	$(INSTALL_DATA) $< $@
 
-$(OSX_APP)/Contents/MacOS/Bitcoin-Qt: $(BITCOIN_QT_BIN)
+$(OSX_APP)/Contents/MacOS/Litecoin-Qt: $(BITCOIN_QT_BIN)
 	$(MKDIR_P) $(@D)
 	STRIPPROG="$(STRIP)" $(INSTALL_STRIP_PROGRAM)  $< $@
 
@@ -93,7 +97,7 @@ $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings:
 
 OSX_APP_BUILT=$(OSX_APP)/Contents/PkgInfo $(OSX_APP)/Contents/Resources/empty.lproj \
   $(OSX_APP)/Contents/Resources/bitcoin.icns $(OSX_APP)/Contents/Info.plist \
-  $(OSX_APP)/Contents/MacOS/Bitcoin-Qt $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings
+  $(OSX_APP)/Contents/MacOS/Litecoin-Qt $(OSX_APP)/Contents/Resources/Base.lproj/InfoPlist.strings
 
 osx_volname:
 	echo $(OSX_VOLNAME) >$@
@@ -111,7 +115,7 @@ $(APP_DIST_DIR)/Applications:
 	@rm -f $@
 	@cd $(@D); $(LN_S) /Applications $(@F)
 
-$(APP_DIST_EXTRAS): $(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Bitcoin-Qt
+$(APP_DIST_EXTRAS): $(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Litecoin-Qt
 
 $(OSX_DMG): $(APP_DIST_EXTRAS)
 	$(GENISOIMAGE) -no-cache-inodes -D -l -probe -V "$(OSX_VOLNAME)" -no-pad -r -dir-mode 0755 -apple -o $@ dist
@@ -126,7 +130,7 @@ $(APP_DIST_DIR)/.background/$(OSX_BACKGROUND_IMAGE): $(OSX_BACKGROUND_IMAGE_DPIF
 $(APP_DIST_DIR)/.DS_Store: $(OSX_DSSTORE_GEN)
 	$(PYTHON) $< "$@" "$(OSX_VOLNAME)"
 
-$(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Bitcoin-Qt: $(OSX_APP_BUILT) $(OSX_PACKAGING)
+$(APP_DIST_DIR)/$(OSX_APP)/Contents/MacOS/Litecoin-Qt: $(OSX_APP_BUILT) $(OSX_PACKAGING)
 	INSTALLNAMETOOL=$(INSTALLNAMETOOL)  OTOOL=$(OTOOL) STRIP=$(STRIP) $(PYTHON) $(OSX_DEPLOY_SCRIPT) $(OSX_APP) -translations-dir=$(QT_TRANSLATION_DIR) -add-qt-tr $(OSX_QT_TRANSLATIONS) -verbose 2
 
 deploydir: $(APP_DIST_EXTRAS)

README.md

@@ -1,43 +1,42 @@
-Bitcoin Core integration/staging tree
+Litecoin Core integration/staging tree
 =====================================
 
-[![Build Status](https://travis-ci.org/bitcoin/bitcoin.svg?branch=master)](https://travis-ci.org/bitcoin/bitcoin)
+[![Build Status](https://travis-ci.org/litecoin-project/litecoin.svg?branch=master)](https://travis-ci.org/litecoin-project/litecoin)
 
-https://bitcoincore.org
+https://litecoin.org
 
-What is Bitcoin?
+What is Litecoin?
 ----------------
 
-Bitcoin is an experimental digital currency that enables instant payments to
-anyone, anywhere in the world. Bitcoin uses peer-to-peer technology to operate
+Litecoin is an experimental digital currency that enables instant payments to
+anyone, anywhere in the world. Litecoin uses peer-to-peer technology to operate
 with no central authority: managing transactions and issuing money are carried
-out collectively by the network. Bitcoin Core is the name of open source
+out collectively by the network. Litecoin Core is the name of open source
 software which enables the use of this currency.
 
 For more information, as well as an immediately useable, binary version of
-the Bitcoin Core software, see https://bitcoin.org/en/download, or read the
-[original whitepaper](https://bitcoincore.org/bitcoin.pdf).
+the Litecoin Core software, see [https://litecoin.org](https://litecoin.org).
 
 License
 -------
 
-Bitcoin Core is released under the terms of the MIT license. See [COPYING](COPYING) for more
+Litecoin Core is released under the terms of the MIT license. See [COPYING](COPYING) for more
 information or see https://opensource.org/licenses/MIT.
 
 Development Process
 -------------------
 
 The `master` branch is regularly built and tested, but is not guaranteed to be
-completely stable. [Tags](https://github.com/bitcoin/bitcoin/tags) are created
-regularly to indicate new official, stable release versions of Bitcoin Core.
+completely stable. [Tags](https://github.com/litecoin-project/litecoin/tags) are created
+regularly to indicate new official, stable release versions of Litecoin Core.
 
 The contribution workflow is described in [CONTRIBUTING.md](CONTRIBUTING.md).
 
-The developer [mailing list](https://lists.linuxfoundation.org/mailman/listinfo/bitcoin-dev)
+The developer [mailing list](https://groups.google.com/forum/#!forum/litecoin-dev)
 should be used to discuss complicated or controversial changes before working
 on a patch set.
 
-Developer IRC can be found on Freenode at #bitcoin-core-dev.
+Developer IRC can be found on Freenode at #litecoin-dev.
 
 Testing
 -------
@@ -69,13 +68,11 @@ not straightforward.
 Translations
 ------------
 
-Changes to translations as well as new translations can be submitted to
-[Bitcoin Core's Transifex page](https://www.transifex.com/projects/p/bitcoin/).
+We only accept translation fixes that are submitted through [Bitcoin Core's Transifex page](https://www.transifex.com/projects/p/bitcoin/).
+Translations are converted to Litecoin periodically.
 
 Translations are periodically pulled from Transifex and merged into the git repository. See the
 [translation process](doc/translation_process.md) for details on how this works.
 
 **Important**: We do not accept translation changes as GitHub pull requests because the next
 pull from Transifex would automatically overwrite them again.
-
-Translators should also subscribe to the [mailing list](https://groups.google.com/forum/#!forum/bitcoin-translators).

autogen.sh

@@ -1,4 +1,8 @@
 #!/bin/sh
+# Copyright (c) 2013-2016 The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 set -e
 srcdir="$(dirname $0)"
 cd "$srcdir"

build-aux/m4/ax_boost_base.m4

@@ -33,7 +33,7 @@
 #   and this notice are preserved. This file is offered as-is, without any
 #   warranty.
 
-#serial 26
+#serial 27
 
 AC_DEFUN([AX_BOOST_BASE],
 [
@@ -96,7 +96,7 @@ if test "x$want_boost" = "xyes"; then
         libsubdirs="lib64 libx32 lib lib64"
         ;;
       ppc64|s390x|sparc64|aarch64|ppc64le)
-        libsubdirs="lib64 lib lib64 ppc64le"
+        libsubdirs="lib64 lib lib64"
         ;;
     esac
 

build-aux/m4/bitcoin_find_bdb48.m4

@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2015 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 AC_DEFUN([BITCOIN_FIND_BDB48],[
   AC_MSG_CHECKING([for Berkeley DB C++ headers])
   BDB_CPPFLAGS=

build-aux/m4/bitcoin_qt.m4

@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2016 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 dnl Helper for cases where a qt dependency is not met.
 dnl Output: If qt version is auto, set bitcoin_enable_qt to false. Else, exit.
 AC_DEFUN([BITCOIN_QT_FAIL],[

build-aux/m4/bitcoin_subdir_to_include.m4

@@ -1,3 +1,7 @@
+dnl Copyright (c) 2013-2014 The Bitcoin Core developers
+dnl Distributed under the MIT software license, see the accompanying
+dnl file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
 dnl BITCOIN_SUBDIR_TO_INCLUDE([CPPFLAGS-VARIABLE-NAME],[SUBDIRECTORY-NAME],[HEADER-FILE])
 dnl SUBDIRECTORY-NAME must end with a path separator
 AC_DEFUN([BITCOIN_SUBDIR_TO_INCLUDE],[

build-aux/m4/l_atomic.m4

@@ -0,0 +1,46 @@
+dnl Copyright (c) 2015 Tim Kosse <[email protected]>
+dnl Copying and distribution of this file, with or without modification, are
+dnl permitted in any medium without royalty provided the copyright notice
+dnl and this notice are preserved. This file is offered as-is, without any
+dnl warranty.
+
+# Some versions of gcc/libstdc++ require linking with -latomic if
+# using the C++ atomic library.
+#
+# Sourced from http://bugs.debian.org/797228
+
+m4_define([_CHECK_ATOMIC_testbody], [[
+  #include <atomic>
+  #include <cstdint>
+
+  int main() {
+    std::atomic<int64_t> a{};
+
+    int64_t v = 5;
+    int64_t r = a.fetch_add(v);
+    return static_cast<int>(r);
+  }
+]])
+
+AC_DEFUN([CHECK_ATOMIC], [
+
+  AC_LANG_PUSH(C++)
+
+  AC_MSG_CHECKING([whether std::atomic can be used without link library])
+
+  AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
+      AC_MSG_RESULT([yes])
+    ],[
+      AC_MSG_RESULT([no])
+      LIBS="$LIBS -latomic"
+      AC_MSG_CHECKING([whether std::atomic needs -latomic])
+      AC_LINK_IFELSE([AC_LANG_SOURCE([_CHECK_ATOMIC_testbody])],[
+          AC_MSG_RESULT([yes])
+        ],[
+          AC_MSG_RESULT([no])
+          AC_MSG_FAILURE([cannot figure out how to use std::atomic])
+        ])
+    ])
+
+  AC_LANG_POP
+])