fix version string in case that no version number is available

Link streamApp against seq and pv libs when SNCSEQ is defined

.VERSION

@@ -0,0 +1,3 @@
+COMMIT: $Format:%H$
+REFS:   $Format:%D$
+DATE:   $Format:%ci$

.gitattributes

@@ -0,0 +1,2 @@
+GNUmakefile export-ignore
+.VERSION export-subst

.gitignore

@@ -6,3 +6,4 @@ dbd
 include
 *.pdf
 *.*log
+StreamVersion.h

GNUmakefile

@@ -19,18 +19,23 @@ SOURCES += $(FORMATS:%=src/%Converter.cc)
 SOURCES += $(BUSSES:%=src/%Interface.cc)
 SOURCES += $(STREAM_SRCS:%=src/%)
 
-HEADERS += devStream.h
-HEADERS += StreamFormat.h
-HEADERS += StreamFormatConverter.h
-HEADERS += StreamBuffer.h
-HEADERS += StreamError.h
+HEADERS += src/devStream.h
+HEADERS += src/StreamFormat.h
+HEADERS += src/StreamFormatConverter.h
+HEADERS += src/StreamBuffer.h
+HEADERS += src/StreamError.h
+HEADERS += src/StreamVersion.h
 
-StreamCore.o StreamCore.d: streamReferences
+CPPFLAGS += -DSTREAM_INTERNAL -I$(COMMON_DIR)
 
-# Update version string (contains __DATE__ and __TIME__)
-# each time anything changes.
-StreamVersion.o: $(filter-out StreamVersion.o stream_exportAddress.o,$(LIBOBJS))
+# Update version string each time anything changes
+StreamVersion$(OBJ) StreamVersion$(DEP): $(COMMON_DIR)/StreamVersion.h $(filter-out StreamVersion$(OBJ) stream_exportAddress$(OBJ),$(LIBOBJS) $(LIBRARY_OBJS))
 
+$(COMMON_DIR)/StreamVersion.h: $(filter-out StreamVersion.h,$(notdir $(SOURCES) $(HEADERS)))
+	@echo Creating $@
+	$(PERL) ../src/makeStreamVersion.pl $@
+
+StreamCore$(OBJ) StreamCore$(DEP): streamReferences
 streamReferences:
 	$(PERL) ../src/makeref.pl Interface $(BUSSES) > $@
 	$(PERL) ../src/makeref.pl Converter $(FORMATS) >> $@

configure/CONFIG_APP

@@ -24,4 +24,3 @@ endif
 
 # dbst based database optimization (default: NO)
 DB_OPT = NO
-HOST_OPT=NO

src/Makefile

@@ -74,14 +74,24 @@ endif
 LIB_LIBS += $(EPICS_BASE_IOC_LIBS)
 
 INC += devStream.h
+INC += StreamFormat.h
+INC += StreamFormatConverter.h
+INC += StreamBuffer.h
+INC += StreamError.h
+INC += StreamVersion.h
 
 # switch off annoying rset warnings in 3.16+
 CPPFLAGS += -DUSE_TYPED_RSET
 
+CPPFLAGS += -DSTREAM_INTERNAL
+
 -include $(TOP)/configure/RULES
 
-# Update version string whenever something changes
-StreamVersion$(OBJ): $(filter-out StreamVersion.o,$(LIBOBJS)$(LIBRARY_OBJS))
+# Update version string whenever something changed.
+StreamVersion$(OBJ): $(COMMON_DIR)/StreamVersion.h $(filter-out StreamVersion$(OBJ),$(LIBOBJS) $(LIBRARY_OBJS)) ../CONFIG_STREAM
+$(COMMON_DIR)/StreamVersion.h: $(SRCS) $(filter-out StreamVersion.h, $(INC))
+	@echo Creating $@
+	$(PERL) ../makeStreamVersion.pl $@
 
 # Add references to all registrars to main file to avoid
 # missing initialization.

src/Makefile.Host

@@ -29,11 +29,4 @@ endif
 include $(TOP)/config/CONFIG_APP
 include ../CONFIG_STREAM
 
-DBDNAME = stream.dbd
-INC += devStream.h
-
 include $(EPICS_BASE)/config/RULES.Host
-
-# create stream.dbd from all RECORDTYPES
-stream.dbd: ../CONFIG_STREAM
-	$(PERL) ../makedbd.pl -3.13 $(RECORDTYPES) > $@

src/Makefile.Vx

@@ -42,17 +42,37 @@ SRCS.c += $(filter %.c,$(STREAM_SRCS:%=%../%))
 
 LIBOBJS = $(patsubst ../%,%.o,$(basename $(SRCS.cc) $(SRCS.c)))
 
+DBDNAME = stream.dbd
+
+INC += devStream.h
+INC += StreamFormat.h
+INC += StreamFormatConverter.h
+INC += StreamBuffer.h
+INC += StreamError.h
+INC += StreamVersion.h
+
 include $(EPICS_BASE)/config/RULES.Vx
 include ../../config/RULES.munch
 
 DEPENDS: depends
 -include DEPENDS
 
+CPPFLAGS += -DSTREAM_INTERNAL
+
 # Update version string whenever something changes
-StreamVersion.o: ../*.c ../*.h ../*.cc ../CONFIG_STREAM
 $(LIBNAME): StreamVersion.o
 
+StreamVersion.o: StreamVersion.h $(filter-out StreamVersion.o,$(LIBOBJS)) ../CONFIG_STREAM
+StreamVersion.h: $(SRCS.cc) $(SRCS.c) $(add-prefix ../,$(filter-out StreamVersion.h, $(INC)))
+	@echo Creating $@ from git tag
+	$(PERL) ../makeStreamVersion.pl > $@
+
 StreamCore.o: streamReferences
 
 streamReferences:
 	touch $@
+
+# create stream.dbd from all RECORDTYPES
+stream.dbd: ../CONFIG_STREAM
+	$(PERL) ../makedbd.pl -3.13 $(RECORDTYPES) > $@
+

src/StreamProtocol.cc

@@ -157,7 +157,7 @@ StreamProtocolParser* StreamProtocolParser::
 readFile(const char* filename)
 {
     FILE* file;
-#ifdef windows
+#ifdef _WIN32
     const char pathseparator = ';';
     const char dirseparator = '\\';
 #else

src/StreamVersion.c

@@ -20,12 +20,16 @@
 * along with StreamDevice. If not, see https://www.gnu.org/licenses/.
 *************************************************************************/
 
-#include "devStream.h"
+#include "StreamVersion.h"
 
 #define STR2(x) #x
 #define STR(x) STR2(x)
 const char StreamVersion [] =
-    "StreamDevice " STR(STREAM_MAJOR)
+    "StreamDevice"
+#if STREAM_MAJOR+0
+    " " STR(STREAM_MAJOR)
     "." STR(STREAM_MINOR)
     "." STR(STREAM_PATCHLEVEL)
-    " built " __DATE__ " " __TIME__;
+    STREAM_DEV
+#endif
+    " commit:" STREAM_COMMIT_HASH;

src/devStream.h

@@ -28,9 +28,9 @@
 #include <string.h>
 #include <sys/types.h>
 
-#define STREAM_MAJOR 2
-#define STREAM_MINOR 8
-#define STREAM_PATCHLEVEL 12
+#ifndef STREAM_INTERNAL
+#include "StreamVersion.h"
+#endif
 
 #ifndef OK
 #define OK 0

src/makeStreamVersion.pl

@@ -0,0 +1,71 @@
+##########################################################################
+# This is a helper script for StreamDevice.
+# It generates a version file from git tags.
+#
+# (C) 2020 Dirk Zimoch (dirk.zimoch@psi.ch)
+#
+# This file is part of StreamDevice.
+#
+# StreamDevice is free software: You can redistribute it and/or modify
+# it under the terms of the GNU Lesser General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# StreamDevice is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with StreamDevice. If not, see https://www.gnu.org/licenses/.
+#########################################################################/
+
+use strict;
+
+
+my ( $major, $minor, $patch, $dev, $branch, $date, $hash );
+
+if (my $version = `git describe --tags --abbrev=0 --dirty --match "[0-9]*" 2>/dev/null`) {
+    if ($version =~ m/(\d+)\.(\d+)\.(\d+)?(.*)?/) {
+        $major = $1; $minor = $2; $patch = $3; $dev = $4;
+    }
+    if (`git log -1 --format="%H %ci"`=~ m/([[:xdigit:]]+) (.+)/) {
+        $hash = $1; $date = $2;
+    }
+}
+if (!$major) {
+    if (open(my $fh, '<', '../../.VERSION')) {
+        while (my $line = <$fh>) {
+            if ($line =~ m/COMMIT: *([[:xdigit:]]+)/) {
+                $hash = $1;
+            }
+            if ($line =~ m/REFS: *tag: *((\d+)\.(\d+)\.(\d+)?,)? *(.*)/) {
+                $major = $2; $minor = $3; $patch = $4; $branch = $5;
+            }
+            if ($line =~ m/DATE: *(.+)/) {  
+                $date = $1;
+            }
+        }
+    } else {
+        print "neither git repo nor .VERSION file found\n";
+    }
+}
+
+open my $out, '>', @ARGV or die $!;
+print $out <<EOF;
+/* Generated file */
+
+#ifndef StreamVersion_h
+#define StreamVersion_h
+
+#define STREAM_MAJOR $major
+#define STREAM_MINOR $minor
+#define STREAM_PATCHLEVEL $patch
+#define STREAM_DEV "$dev"
+#define STREAM_COMMIT_HASH "$hash"
+#define STREAM_COMMIT_DATE "$date"
+
+#endif /* StreamVersion_h */
+EOF
+
+close $out

streamApp/Makefile

@@ -68,6 +68,10 @@ PROD_LIBS += sscan
 endif
 endif
 
+ifneq ($(words $(SNCSEQ) $(SYNAPPS)), 0)
+PROD_LIBS += seq pv
+endif
+
 streamApp_DBD += stream.dbd
 
 ifdef PCRE