Build identification strings

All client version information is moved to version.cpp, which optionally
(-DHAVE_BUILD_INFO) includes build.h. build.h is automatically generated
on supporting platforms via contrib/genbuild.sh, using git describe.

The git export-subst attribute is used to put the commit id statically
in version.cpp inside generated archives, and this value is used if no
build.h is present.

The gitian descriptors are modified to use git archive instead of a
copy, to create the src/ directory in the output. This way,
src/src/version.cpp will contain the static commit id. To prevent
gitian builds from getting the "-dirty" marker in their git-describe
generated identifiers, no touching of files or running sed on the
makefile is performed anymore. This does not seem to influence
determinism.

20 files changed, 193 insertions, 31 deletions

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000000..26d7549356
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1 @@
+src/version.cpp export-subst
diff --git a/.gitignore b/.gitignore
index 66f93867d8..dafbc2b6bc 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,6 +1,7 @@
 src/*.exe
 src/bitcoin
 src/bitcoind
+src/build.h
 .*.swp
 *.*~*
 *.bak
diff --git a/bitcoin-qt.pro b/bitcoin-qt.pro
index 8b34d6c211..46caa22fb7 100644
--- a/bitcoin-qt.pro
+++ b/bitcoin-qt.pro
@@ -80,6 +80,15 @@ contains(BITCOIN_NEED_QT_PLUGINS, 1) {
     # do not enable this on windows, as it will result in a non-working executable!
 }
 
+# regenerate src/build.h
+!windows || contains(USE_BUILD_INFO, 1) {
+    genbuild.commands = share/genbuild.sh src/build.h
+    genbuild.target = src/build.h
+    "src/version.cpp".depends += src/build.h
+    QMAKE_EXTRA_TARGETS += genbuild
+    DEFINES += HAVE_BUILD_INFO
+}
+
 # disable quite some warnings because bitcoin core "sins" a lot
 QMAKE_CXXFLAGS_WARN_ON = -fdiagnostics-show-option -Wall -Wno-strict-aliasing -Wno-invalid-offsetof -Wno-unused-variable -Wno-unused-parameter -Wno-sign-compare -Wno-char-subscripts -Wno-unused-value -Wno-sequence-point -Wno-parentheses -Wno-unknown-pragmas -Wno-switch
 
@@ -161,6 +170,7 @@ SOURCES += src/qt/bitcoin.cpp src/qt/bitcoingui.cpp \
     src/qt/aboutdialog.cpp \
     src/qt/editaddressdialog.cpp \
     src/qt/bitcoinaddressvalidator.cpp \
+    src/version.cpp \
     src/util.cpp \
     src/netbase.cpp \
     src/key.cpp \
diff --git a/contrib/gitian-descriptors/gitian-win32.yml b/contrib/gitian-descriptors/gitian-win32.yml
index e929eb84f3..49bc9c7a57 100644
--- a/contrib/gitian-descriptors/gitian-win32.yml
+++ b/contrib/gitian-descriptors/gitian-win32.yml
@@ -45,25 +45,30 @@ script: |
   #
   cd bitcoin
   mkdir -p $OUTDIR/src
-  cp -a . $OUTDIR/src
-  rm -rf $OUTDIR/src/.git
+  git archive HEAD | tar -x -C $OUTDIR/src
   cp $OUTDIR/src/doc/README_windows.txt $OUTDIR/readme.txt
   cp $OUTDIR/src/COPYING $OUTDIR/license.txt
   export LD_PRELOAD=/usr/lib/faketime/libfaketime.so.1
   export FAKETIME=$REFERENCE_DATETIME
   export TZ=UTC
-  $HOME/qt/src/bin/qmake -spec unsupported/win32-g++-cross MINIUPNPC_LIB_PATH=$HOME/build/miniupnpc MINIUPNPC_INCLUDE_PATH=$HOME/build/ BDB_LIB_PATH=$HOME/build/db-4.8.30.NC/build_unix BDB_INCLUDE_PATH=$HOME/build/db-4.8.30.NC/build_unix BOOST_LIB_PATH=$HOME/build/boost_1_47_0/stage/lib BOOST_INCLUDE_PATH=$HOME/build/boost_1_47_0 BOOST_LIB_SUFFIX=-mt-s BOOST_THREAD_LIB_SUFFIX=_win32-mt-s OPENSSL_LIB_PATH=$HOME/build/openssl-1.0.0e OPENSSL_INCLUDE_PATH=$HOME/build/openssl-1.0.0e/include QRENCODE_LIB_PATH=$HOME/build/qrencode-3.2.0/.libs QRENCODE_INCLUDE_PATH=$HOME/build/qrencode-3.2.0 USE_QRCODE=1 INCLUDEPATH=$HOME/build DEFINES=BOOST_THREAD_USE_LIB BITCOIN_NEED_QT_PLUGINS=1 QMAKE_LRELEASE=lrelease QMAKE_CXXFLAGS=-frandom-seed=bitcoin QMAKE_LFLAGS=-frandom-seed=bitcoin
+  $HOME/qt/src/bin/qmake -spec unsupported/win32-g++-cross MINIUPNPC_LIB_PATH=$HOME/build/miniupnpc MINIUPNPC_INCLUDE_PATH=$HOME/build/ BDB_LIB_PATH=$HOME/build/db-4.8.30.NC/build_unix BDB_INCLUDE_PATH=$HOME/build/db-4.8.30.NC/build_unix BOOST_LIB_PATH=$HOME/build/boost_1_47_0/stage/lib BOOST_INCLUDE_PATH=$HOME/build/boost_1_47_0 BOOST_LIB_SUFFIX=-mt-s BOOST_THREAD_LIB_SUFFIX=_win32-mt-s OPENSSL_LIB_PATH=$HOME/build/openssl-1.0.0e OPENSSL_INCLUDE_PATH=$HOME/build/openssl-1.0.0e/include QRENCODE_LIB_PATH=$HOME/build/qrencode-3.2.0/.libs QRENCODE_INCLUDE_PATH=$HOME/build/qrencode-3.2.0 USE_QRCODE=1 INCLUDEPATH=$HOME/build DEFINES=BOOST_THREAD_USE_LIB BITCOIN_NEED_QT_PLUGINS=1 QMAKE_LRELEASE=lrelease QMAKE_CXXFLAGS=-frandom-seed=bitcoin QMAKE_LFLAGS=-frandom-seed=bitcoin USE_BUILD_INFO=1
   make $MAKEOPTS
   cp release/bitcoin-qt.exe $OUTDIR/
   #
   cd src
-  sed 's/$(DEBUGFLAGS)/-frandom-seed=bitcoin/' -i makefile.linux-mingw
   export LD_PRELOAD=/usr/lib/faketime/libfaketime.so.1
   export FAKETIME=$REFERENCE_DATETIME
   export TZ=UTC
-  make -f makefile.linux-mingw $MAKEOPTS DEPSDIR=$HOME/build bitcoind.exe USE_UPNP=0
+  make -f makefile.linux-mingw $MAKEOPTS DEPSDIR=$HOME/build bitcoind.exe USE_UPNP=0 DEBUGFLAGS="-frandom-seed=bitcoin"
   i586-mingw32msvc-strip bitcoind.exe
-  makensis ../share/setup.nsi
-  cp ../share/bitcoin-*-win32-setup.exe $OUTDIR/
   mkdir $OUTDIR/daemon
   cp bitcoind.exe $OUTDIR/daemon
+  cd ..
+  mkdir nsis
+  git archive HEAD | tar -x -C nsis
+  cd nsis/src
+  mkdir ../release
+  cp ../../release/* ../release/
+  cp ../../src/*.exe .
+  makensis ../share/setup.nsi
+  cp ../share/bitcoin-*-win32-setup.exe $OUTDIR/
diff --git a/contrib/gitian-descriptors/gitian.yml b/contrib/gitian-descriptors/gitian.yml
index de622e968f..8243c5c301 100644
--- a/contrib/gitian-descriptors/gitian.yml
+++ b/contrib/gitian-descriptors/gitian.yml
@@ -42,13 +42,11 @@ script: |
   #
   cd bitcoin
   mkdir -p $OUTDIR/src
-  cp -a . $OUTDIR/src
-  rm -rf $OUTDIR/src/.git
+  git archive HEAD | tar -x -C $OUTDIR/src
   cp $OUTDIR/src/doc/README $OUTDIR
   cp $OUTDIR/src/COPYING $OUTDIR
   cd src
-  sed 's/$(DEBUGFLAGS)//' -i makefile.unix
-  make -f makefile.unix STATIC=1 OPENSSL_INCLUDE_PATH="$INSTDIR/include" OPENSSL_LIB_PATH="$INSTDIR/lib" $MAKEOPTS bitcoind USE_UPNP=0
+  make -f makefile.unix STATIC=1 OPENSSL_INCLUDE_PATH="$INSTDIR/include" OPENSSL_LIB_PATH="$INSTDIR/lib" $MAKEOPTS bitcoind USE_UPNP=0 DEBUGFLAGS=
   mkdir -p $OUTDIR/bin/$GBUILD_BITS
   install -s bitcoind $OUTDIR/bin/$GBUILD_BITS
   cd ..
diff --git a/doc/release-process.txt b/doc/release-process.txt
index 051a2151b5..3f3c6dad6a 100644
--- a/doc/release-process.txt
+++ b/doc/release-process.txt
@@ -2,7 +2,7 @@
 
 * update (commit) version in sources
   bitcoin-qt.pro
-  src/main.h      (CLIENT_VERSION : PROTOCOL_VERSION in serialize.h is updated only on protocol changes)
+  src/version.cpp
   share/setup.nsi
   doc/README*
 
diff --git a/share/genbuild.sh b/share/genbuild.sh
new file mode 100755
index 0000000000..d959877dc8
--- /dev/null
+++ b/share/genbuild.sh
@@ -0,0 +1,35 @@
+#!/bin/sh
+
+if [ $# -gt 0 ]; then
+    FILE="$1"
+    shift
+    if [ -f "$FILE" ]; then
+        INFO="$(head -n 1 "$FILE")"
+    fi
+else
+    echo "Usage: $0 <filename>"
+    exit 1
+fi
+
+if [ -e "$(which git)" ]; then
+    # clean 'dirty' status of touched files that haven't been modified
+    git diff >/dev/null 2>/dev/null 
+
+    # get a string like "v0.6.0-66-g59887e8-dirty"
+    DESC="$(git describe --dirty 2>/dev/null)"
+
+    # get a string like "2012-04-10 16:27:19 +0200"
+    TIME="$(git log -n 1 --format="%ci")"
+fi
+
+if [ -n "$DESC" ]; then
+    NEWINFO="#define BUILD_DESC \"$DESC\""
+else
+    NEWINFO="// No build information available"
+fi
+
+# only update build.h if necessary
+if [ "$INFO" != "$NEWINFO" ]; then
+    echo "$NEWINFO" >"$FILE"
+    echo "#define BUILD_DATE \"$TIME\"" >>"$FILE"
+fi
diff --git a/src/init.cpp b/src/init.cpp
index 3f900fc872..9d37eb3c06 100644
--- a/src/init.cpp
+++ b/src/init.cpp
@@ -307,7 +307,7 @@ bool AppInit2(int argc, char* argv[])
     if (!fDebug && !pszSetDataDir[0])
         ShrinkDebugFile();
     printf("\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n");
-    printf("Bitcoin version %s\n", FormatFullVersion().c_str());
+    printf("Bitcoin version %s (%s)\n", FormatFullVersion().c_str(), CLIENT_DATE.c_str());
     printf("Default data directory %s\n", GetDefaultDataDir().c_str());
 
     if (GetBoolArg("-loadblockindextest"))
diff --git a/src/main.cpp b/src/main.cpp
index 7c49316b4a..7e257f48d9 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -18,11 +18,6 @@ using namespace boost;
 // Global state
 //
 
-// Name of client reported in the 'version' message. Report the same name
-// for both bitcoind and bitcoin-qt, to make it harder for attackers to
-// target servers or GUI users specifically.
-const std::string CLIENT_NAME("Satoshi");
-
 CCriticalSection cs_setpwalletRegistered;
 set<CWallet*> setpwalletRegistered;
 
diff --git a/src/main.h b/src/main.h
index 6c81abad56..1d46851ac2 100644
--- a/src/main.h
+++ b/src/main.h
@@ -10,6 +10,7 @@
 #include "key.h"
 #include "script.h"
 #include "db.h"
+#include "version.h"
 
 #ifdef WIN32
 #include <io.h> /* for _commit */
@@ -30,10 +31,6 @@ class CInv;
 class CRequestTracker;
 class CNode;
 
-static const int CLIENT_VERSION = 60099;
-static const bool VERSION_IS_BETA = true;
-extern const std::string CLIENT_NAME;
-
 static const unsigned int MAX_BLOCK_SIZE = 1000000;
 static const unsigned int MAX_BLOCK_SIZE_GEN = MAX_BLOCK_SIZE/2;
 static const int MAX_BLOCK_SIGOPS = MAX_BLOCK_SIZE/50;
diff --git a/src/makefile.linux-mingw b/src/makefile.linux-mingw
index 3f7e6114ec..4922df599b 100644
--- a/src/makefile.linux-mingw
+++ b/src/makefile.linux-mingw
@@ -43,6 +43,7 @@ LIBS += -l mingwthrd -l kernel32 -l user32 -l gdi32 -l comdlg32 -l winspool -l w
 HEADERS = $(wildcard *.h)
 
 OBJS= \
+    obj/version.o \
     obj/checkpoints.o \
     obj/netbase.o \
     obj/addrman.o \
@@ -64,10 +65,14 @@ OBJS= \
 
 all: bitcoind.exe
 
+build.h: FORCE
+	@../share/genbuild.sh build.h
+DEFS += -DHAVE_BUILD_INFO
+
 obj/%.o: %.cpp $(HEADERS)
 	i586-mingw32msvc-g++ -c $(CFLAGS) -o $@ $<
 
-bitcoind.exe: $(OBJS:obj/%=obj/%)
+bitcoind.exe: build.h $(OBJS:obj/%=obj/%)
 	i586-mingw32msvc-g++ $(CFLAGS) -o $@ $(LIBPATHS) $^ $(LIBS)
 
 
@@ -85,3 +90,6 @@ clean:
 	-rm -f headers.h.gch
 	-rm -f bitcoind.exe
 	-rm -f test_bitcoin.exe
+	-rm -f src/build.h
+
+FORCE:
diff --git a/src/makefile.mingw b/src/makefile.mingw
index 33cc68b62b..397fdf4f32 100644
--- a/src/makefile.mingw
+++ b/src/makefile.mingw
@@ -41,6 +41,7 @@ LIBS += -l kernel32 -l user32 -l gdi32 -l comdlg32 -l winspool -l winmm -l shell
 HEADERS = $(wildcard *.h)
 
 OBJS= \
+    obj/version.o \
     obj/checkpoints.o \
     obj/netbase.o \
     obj/addrman.o \
@@ -82,3 +83,4 @@ clean:
 	-del /Q obj\test\*
 	-del /Q test\*.o
 	-del /Q headers.h.gch
+	-del /Q build.h
diff --git a/src/makefile.osx b/src/makefile.osx
index ed35b33ecb..439d8ef21b 100644
--- a/src/makefile.osx
+++ b/src/makefile.osx
@@ -65,6 +65,7 @@ CFLAGS += -Wextra -Wno-sign-compare -Wno-char-subscripts -Wno-invalid-offsetof -
     $(DEBUGFLAGS) $(DEFS) $(INCLUDEPATHS)
 
 OBJS= \
+    obj/version.o \
     obj/checkpoints.o \
     obj/netbase.o \
     obj/addrman.o \
@@ -99,6 +100,10 @@ all: bitcoind
 -include obj/*.P
 -include obj-test/*.P
 
+build.h: FORCE
+	@../share/genbuild.sh build.h
+DEFS += -DHAVE_BUILD_INFO
+
 obj/%.o: %.cpp
 	$(CXX) -c $(CFLAGS) -MMD -o $@ $<
 	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
@@ -106,7 +111,7 @@ obj/%.o: %.cpp
 	      -e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
 	  rm -f $(@:%.o=%.d)
 
-bitcoind: $(OBJS:obj/%=obj/%)
+bitcoind: build.h $(OBJS:obj/%=obj/%)
 	$(CXX) $(CFLAGS) -o $@ $(LIBPATHS) $^ $(LIBS)
 
 TESTOBJS := $(patsubst test/%.cpp,obj-test/%.o,$(wildcard test/*.cpp))
@@ -127,3 +132,6 @@ clean:
 	-rm -f obj-test/*.o
 	-rm -f obj/*.P
 	-rm -f obj-test/*.P
+	-rm -f src/build.h
+
+FORCE:
diff --git a/src/makefile.unix b/src/makefile.unix
index 1fb8e270fb..c3727361e5 100644
--- a/src/makefile.unix
+++ b/src/makefile.unix
@@ -85,6 +85,7 @@ xCXXFLAGS=-pthread -Wextra -Wno-sign-compare -Wno-char-subscripts -Wno-invalid-o
     $(DEBUGFLAGS) $(DEFS) $(HARDENING) $(CXXFLAGS)
 
 OBJS= \
+    obj/version.o \
     obj/checkpoints.o \
     obj/netbase.o \
     obj/addrman.o \
@@ -111,6 +112,10 @@ all: bitcoind
 -include obj/*.P
 -include obj-test/*.P
 
+build.h: FORCE
+	@../share/genbuild.sh build.h
+DEFS += -DHAVE_BUILD_INFO
+
 obj/%.o: %.cpp
 	$(CXX) -c $(xCXXFLAGS) -MMD -o $@ $<
 	@cp $(@:%.o=%.d) $(@:%.o=%.P); \
@@ -118,7 +123,7 @@ obj/%.o: %.cpp
 	      -e '/^$$/ d' -e 's/$$/ :/' < $(@:%.o=%.d) >> $(@:%.o=%.P); \
 	  rm -f $(@:%.o=%.d)
 
-bitcoind: $(OBJS:obj/%=obj/%)
+bitcoind: build.h $(OBJS:obj/%=obj/%)
 	$(CXX) $(xCXXFLAGS) -o $@ $^ $(LDFLAGS) $(LIBS)
 
 TESTOBJS := $(patsubst test/%.cpp,obj-test/%.o,$(wildcard test/*.cpp))
@@ -139,3 +144,6 @@ clean:
 	-rm -f obj-test/*.o
 	-rm -f obj/*.P
 	-rm -f obj-test/*.P
+	-rm -f src/build.h
+
+FORCE:
diff --git a/src/qt/aboutdialog.cpp b/src/qt/aboutdialog.cpp
index 08d7774067..0b98befe8d 100644
--- a/src/qt/aboutdialog.cpp
+++ b/src/qt/aboutdialog.cpp
@@ -2,6 +2,8 @@
 #include "ui_aboutdialog.h"
 #include "clientmodel.h"
 
+#include "version.h"
+
 AboutDialog::AboutDialog(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::AboutDialog)
diff --git a/src/qt/clientmodel.cpp b/src/qt/clientmodel.cpp
index 8163da0915..284bee0e8e 100644
--- a/src/qt/clientmodel.cpp
+++ b/src/qt/clientmodel.cpp
@@ -88,3 +88,8 @@ QString ClientModel::formatFullVersion() const
 {
     return QString::fromStdString(FormatFullVersion());
 }
+
+QString ClientModel::formatBuildDate() const
+{
+    return QString::fromStdString(CLIENT_DATE);
+}
diff --git a/src/qt/clientmodel.h b/src/qt/clientmodel.h
index 6366b4d617..8e7431a2f3 100644
--- a/src/qt/clientmodel.h
+++ b/src/qt/clientmodel.h
@@ -37,6 +37,7 @@ public:
     QString getStatusBarWarnings() const;
 
     QString formatFullVersion() const;
+    QString formatBuildDate() const;
 
 private:
     OptionsModel *optionsModel;
diff --git a/src/util.cpp b/src/util.cpp
index d55e7ae10e..7354df6e73 100644
--- a/src/util.cpp
+++ b/src/util.cpp
@@ -1061,12 +1061,7 @@ string FormatVersion(int nVersion)
 
 string FormatFullVersion()
 {
-    string s = FormatVersion(CLIENT_VERSION);
-    if (VERSION_IS_BETA) {
-        s += "-";
-        s += _("beta");
-    }
-    return s;
+    return CLIENT_BUILD;
 }
 
 // Format the subversion field according to BIP 14 spec (https://en.bitcoin.it/wiki/BIP_0014)
diff --git a/src/version.cpp b/src/version.cpp
new file mode 100644
index 0000000000..e1be5f491b
--- /dev/null
+++ b/src/version.cpp
@@ -0,0 +1,77 @@
+// Copyright (c) 2012 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+#include <string>
+
+#include "version.h"
+
+// Name of client reported in the 'version' message. Report the same name
+// for both bitcoind and bitcoin-qt, to make it harder for attackers to
+// target servers or GUI users specifically.
+const std::string CLIENT_NAME("Satoshi");
+
+// Client version number
+#define CLIENT_VERSION_MAJOR          0
+#define CLIENT_VERSION_MINOR          6
+#define CLIENT_VERSION_REVISION       0
+#define CLIENT_VERSION_BUILD         99
+#define CLIENT_VERSION_SUFFIX   "-beta"
+
+const int CLIENT_VERSION = 1000000 * CLIENT_VERSION_MAJOR
+                         +   10000 * CLIENT_VERSION_MINOR 
+                         +     100 * CLIENT_VERSION_REVISION
+                         +       1 * CLIENT_VERSION_BUILD;
+
+
+
+// The following part of the code determines the CLIENT_BUILD variable.
+// Several mechanisms are used for this:
+// * first, if HAVE_BUILD_INFO is defined, include build.h, a file that is
+//   generated by the build environment, possibly containing the output
+//   of git-describe in a macro called BUILD_DESC
+// * secondly, if this is an exported version of the code, GIT_ARCHIVE will
+//   be defined (automatically using the export-subst git attribute), and
+//   GIT_COMMIT will contain the commit id.
+// * then, three options exist for determining CLIENT_BUILD:
+//   * if BUILD_DESC is defined, use that literally (output of git-describe)
+//   * if not, but GIT_COMMIT is defined, use v[maj].[min].[rev].[build]-g[commit]
+//   * otherwise, use v[maj].[min].[rev].[build]-unk
+// finally CLIENT_VERSION_SUFFIX is added
+
+// First, include build.h if requested
+#ifdef HAVE_BUILD_INFO
+#    include "build.h"
+#endif
+
+// git will put "#define GIT_ARCHIVE 1" on the next line inside archives. $Format:%n#define GIT_ARCHIVE 1$
+#ifdef GIT_ARCHIVE
+#    define GIT_COMMIT_ID "$Format:%h$"
+#    define GIT_COMMIT_DATE "$Format:%cD"
+#endif
+
+#define STRINGIFY(s) #s
+
+#define BUILD_DESC_FROM_COMMIT(maj,min,rev,build,commit) \
+    "v" STRINGIFY(maj) "." STRINGIFY(min) "." STRINGIFY(rev) "." STRINGIFY(build) "-g" commit
+
+#define BUILD_DESC_FROM_UNKNOWN(maj,min,rev,build) \
+    "v" STRINGIFY(maj) "." STRINGIFY(min) "." STRINGIFY(rev) "." STRINGIFY(build) "-unk"
+
+#ifndef BUILD_DESC
+#    ifdef GIT_COMMIT_ID
+#        define BUILD_DESC BUILD_DESC_FROM_COMMIT(CLIENT_VERSION_MAJOR, CLIENT_VERSION_MINOR, CLIENT_VERSION_REVISION, CLIENT_VERSION_BUILD, GIT_COMMIT_ID)
+#    else
+#        define BUILD_DESC BUILD_DESC_FROM_UNKNOWN(CLIENT_VERSION_MAJOR, CLIENT_VERSION_MINOR, CLIENT_VERSION_REVISION, CLIENT_VERSION_BUILD)
+#    endif
+#endif
+
+#ifndef BUILD_DATE
+#    ifdef GIT_COMMIT_DATE
+#        define BUILD_DATE GIT_COMMIT_DATE
+#    else
+#        define BUILD_DATE __DATE__ ", " __TIME__
+#    endif
+#endif
+
+const std::string CLIENT_BUILD(BUILD_DESC CLIENT_VERSION_SUFFIX);
+const std::string CLIENT_DATE(BUILD_DATE);
diff --git a/src/version.h b/src/version.h
new file mode 100644
index 0000000000..c93b28fb7d
--- /dev/null
+++ b/src/version.h
@@ -0,0 +1,14 @@
+// Copyright (c) 2012 The Bitcoin developers
+// Distributed under the MIT/X11 software license, see the accompanying
+// file license.txt or http://www.opensource.org/licenses/mit-license.php.
+#ifndef BITCOIN_VERSION_H
+#define BITCOIN_VERSION_H
+
+#include <string>
+
+extern const std::string CLIENT_NAME;
+extern const std::string CLIENT_BUILD;
+extern const std::string CLIENT_DATE;
+extern const int         CLIENT_VERSION;
+
+#endif