lv2 version

Makefile

@@ -7,6 +7,7 @@ CFLAGS ?= $(OPTIMIZATIONS) -Wall
 STRIP=strip
 STRIPFLAGS=-s
 
+midifilter_VERSION?=$(shell git describe --tags HEAD 2>/dev/null | sed 's/-g.*$$//;s/^v//' || echo "LV2")
 ###############################################################################
 
 LV2DIR ?= $(PREFIX)/lib/lv2
@@ -22,9 +23,11 @@ ifeq ($(UNAME),Darwin)
   LIB_EXT=.dylib
   STRIPFLAGS=-u -r -arch all -s lv2syms
   targets+=lv2syms
+  EXTENDED_RE=-E
 else
   LV2LDFLAGS=-Wl,-Bstatic -Wl,-Bdynamic
   LIB_EXT=.so
+  EXTENDED_RE=-r
 endif
 
 ifneq ($(XWIN),)
@@ -37,6 +40,11 @@ endif
 
 targets+=$(BUILDDIR)$(LV2NAME)$(LIB_EXT)
 
+###############################################################################
+# extract versions
+LV2VERSION=$(midifilter_VERSION)
+include git2lv2.mk
+
 # check for build-dependencies
 ifeq ($(shell pkg-config --exists lv2 || echo no), no)
   $(error "LV2 SDK was not found")
@@ -90,7 +98,7 @@ $(BUILDDIR)$(LV2NAME).ttl: $(LV2NAME).ttl.in ttf.h filters.c
 	cat $(LV2NAME).ttl.in > $(BUILDDIR)$(LV2NAME).ttl
 	gcc -E -I. -DMX_TTF filters.c \
 		| grep -v '^\#' \
-		| sed 's/HTTPP/http:\//g' \
+		| sed 's/HTTPP/http:\//g;s/@VERSION@/lv2:microVersion $(LV2MIC) ;lv2:minorVersion $(LV2MIN) ;/g' \
 		| uniq \
 		>> $(BUILDDIR)$(LV2NAME).ttl
 

git2lv2.mk

@@ -0,0 +1,43 @@
+
+###############################################################################
+# extract versions
+GIT_REV_REGEXP="([0-9][0-9]*)\.([0-9][0-9]*)(\.([0-9][0-9]*))?(-([0-9][0-9]*))?(-g([a-f0-9]+))?"
+
+override MAJOR=$(shell echo $(LV2VERSION) | sed $(EXTENDED_RE) -e s/$(GIT_REV_REGEXP)/\\1/)
+override MINOR=$(shell echo $(LV2VERSION) | sed $(EXTENDED_RE) -e s/$(GIT_REV_REGEXP)/\\2/)
+override MICRO=$(shell echo $(LV2VERSION) | sed $(EXTENDED_RE) -e s/$(GIT_REV_REGEXP)/\\4/)
+override GITREV=$(shell echo $(LV2VERSION) | sed $(EXTENDED_RE) -e s/$(GIT_REV_REGEXP)/\\6/)
+
+ifeq ($(MAJOR),)
+  override MAJOR=0
+endif
+ifeq ($(MINOR),)
+  override MINOR=0
+endif
+ifeq ($(MICRO),)
+  override MICRO=0
+endif
+
+$(info Version: $(LV2VERSION) -> $(MAJOR) $(MINOR) $(MICRO) $(GITREV))
+
+# version requirements, see
+# http://lv2plug.in/ns/lv2core/#minorVersion
+# http://lv2plug.in/ns/lv2core/#microVersion
+ifeq ($(GITREV),)
+# even numbers for tagged releases
+  override LV2MIN = $(shell expr $(MAJOR) \* 65536 + $(MINOR) \* 256 + $(MICRO) \* 2 )
+  override LV2MIC = 0
+else
+# odd-numbers for all non tagged git versions
+  override LV2MIN = $(shell expr $(MAJOR) \* 65536 + $(MINOR) \* 256 + $(MICRO) \* 2 + 1 )
+  override LV2MIC = $(shell expr $(GITREV) \* 2 + 1)
+endif
+
+ifeq ($(LV2MIN),)
+  $(error "Cannot extract required LV2 minor-version parameter")
+endif
+ifeq ($(LV2MIC),)
+  $(error "Cannot extract required LV2 micro-version parameter")
+endif
+
+$(info LV2 Version: $(LV2MIN) $(LV2MIC))

ttf.h

@@ -27,6 +27,7 @@
 #define TTF_DEF(DOAPNAME, INSUPPORTS) \
 	a lv2:Plugin, lv2:FilterPlugin ; \
 	doap:name DOAPNAME ; \
+	@VERSION@ \
 	doap:license <HTTPP/usefulinc.com/doap/licenses/gpl> ; \
   lv2:project <HTTPP/gareus.org/oss/lv2/midifilter> ; \
 	lv2:optionalFeature lv2:hardRTCapable ; \