Include current git commit hash in --version output

makefile

@@ -6,9 +6,12 @@ debug: dmdclient debugserver
 gdc: gdcserver gdcclient
 ldc: ldcserver ldcclient
 
-DMD = dmd
+DMD := dmd
-GDC = gdc
+GDC := gdc
-LDC = ldc2
+LDC := ldc2
+
+githash:
+	git log -n 1 --oneline | cut -f 1 -d ' ' > githash.txt
 
 report:
 	dscanner --report src > dscanner-report.json
@@ -17,34 +20,38 @@ report:
 clean:
 	rm -rf bin
 	rm -f dscanner-report.json
+	rm -f githash.txt
 
-CLIENT_SRC = src/client.d\
+CLIENT_SRC := src/client.d\
 	src/messages.d\
 	src/stupidlog.d\
 	src/dcd_version.d\
 	msgpack-d/src/msgpack.d
 
-DMD_CLIENT_FLAGS = -Imsgpack-d/src\
+DMD_CLIENT_FLAGS := -Imsgpack-d/src\
 	-Imsgpack-d/src\
+	-J.\
 	-release\
 	-inline\
 	-O\
 	-wi\
 	-ofbin/dcd-client
 
-GDC_CLIENT_FLAGS =  -Imsgpack-d/src\
+GDC_CLIENT_FLAGS := -Imsgpack-d/src\
+	-J.\
 	-O3\
 	-frelease\
 	-obin/dcd-client
 
-LDC_CLIENT_FLAGS = -Imsgpack-d/src\
+LDC_CLIENT_FLAGS := -Imsgpack-d/src\
 	-Imsgpack-d/src\
+	-J=.\
 	-release\
 	-O5\
 	-oq\
 	-of=bin/dcd-client
 
-SERVER_SRC = src/actypes.d\
+SERVER_SRC := src/actypes.d\
 	src/conversion/astconverter.d\
 	src/conversion/first.d\
 	src/conversion/second.d\
@@ -77,65 +84,68 @@ SERVER_SRC = src/actypes.d\
 	containers/src/containers/slist.d\
 	msgpack-d/src/msgpack.d
 
-DMD_SERVER_FLAGS = -Icontainers/src\
+DMD_SERVER_FLAGS := -Icontainers/src\
 	-Imsgpack-d/src\
 	-Ilibdparse/src\
+	-J.\
 	-wi\
 	-O\
 	-release\
 	-inline\
 	-ofbin/dcd-server
 
-DEBUG_SERVER_FLAGS = -Icontainers/src\
+DEBUG_SERVER_FLAGS := -Icontainers/src\
 	-Imsgpack-d/src\
 	-Ilibdparse/src\
 	-wi\
 	-g\
 	-ofbin/dcd-server
 
-GDC_SERVER_FLAGS =  -Icontainers/src\
+GDC_SERVER_FLAGS := -Icontainers/src\
 	-Imsgpack-d/src\
 	-Ilibdparse/src\
+	-J.\
 	-O3\
 	-frelease\
 	-obin/dcd-server
 
-LDC_SERVER_FLAGS = -Icontainers/src\
+LDC_SERVER_FLAGS := -Icontainers/src\
 	-Imsgpack-d/src\
 	-Ilibdparse/src\
+	-J=.\
 	-O5\
 	-release\
 	-oq\
 	-of=bin/dcd-server
 
-dmdclient:
+dmdclient: githash
 	mkdir -p bin
 	rm -f containers/src/std/allocator.d
 	${DMD} ${CLIENT_SRC} ${DMD_CLIENT_FLAGS}
 
-dmdserver:
+dmdserver: githash
 	mkdir -p bin
 	rm -f containers/src/std/allocator.d
 	${DMD} ${SERVER_SRC} ${DMD_SERVER_FLAGS}
 
-debugserver:
+debugserver: githash
 	mkdir -p bin
 	rm -f containers/src/std/allocator.d
 	${DMD} ${SERVER_SRC} ${DEBUG_SERVER_FLAGS}
 
 
-gdcclient:
+gdcclient: githash
 	mkdir -p bin
 	rm -f containers/src/std/allocator.d
 	${GDC} ${CLIENT_SRC} ${GDC_CLIENT_FLAGS}
 
-gdcserver:
+gdcserver: githash
 	mkdir -p bin
 	rm -f containers/src/std/allocator.d
 	${GDC} ${SERVER_SRC} ${GDC_SERVER_FLAGS}
 
-ldcclient:
+ldcclient: githash
 	${LDC} ${CLIENT_SRC} ${LDC_CLIENT_FLAGS}
 
-ldcserver:
+ldcserver: githash
 	${LDC} ${SERVER_SRC} ${LDC_SERVER_FLAGS}

src/client.d

@@ -67,7 +67,10 @@ int main(string[] args)
 
 	if (printVersion)
 	{
-		writeln(DCD_VERSION);
+		version (Windows)
+			writeln(DCD_VERSION);
+		else
+			write(DCD_VERSION, " ", GIT_HASH);
 		return 0;
 	}
 	else if (help)

src/dcd_version.d

@@ -19,3 +19,4 @@
 module dcd_version;
 
 enum DCD_VERSION = "v0.4.0";
+version (Windows) {} else enum GIT_HASH = import("githash.txt");

src/server.d

@@ -76,7 +76,10 @@ int main(string[] args)
 
 	if (printVersion)
 	{
-		writeln(DCD_VERSION);
+		version (Windows)
+			writeln(DCD_VERSION);
+		else
+			write(DCD_VERSION, " ", GIT_HASH);
 		return 0;
 	}