build: Store library version numbers in .version files

This moves work from the configure to the Make stage where it can
be parallelized and ensures that shared libraries are built with
the right version number in the filename.

Makefile

@@ -67,7 +67,7 @@ COMPILE_HOSTC = $(call COMPILE,HOSTCC)
 %.h.c:
 	$(Q)echo '#include "$*.h"' >$@
 
-%.c %.h %.ver: TAG = GEN
+%.c %.h %.ver %.version: TAG = GEN
 
 AVPROGS-$(CONFIG_AVCONV)   += avconv
 AVPROGS-$(CONFIG_AVPLAY)   += avplay

avbuild/common.mak

@@ -49,7 +49,7 @@ $(TOOLOBJS): | tools
 
 OBJDIRS := $(OBJDIRS) $(dir $(OBJS) $(HOBJS) $(HOSTOBJS) $(TESTOBJS))
 
-CLEANSUFFIXES     = *.d *.o *~ *.h.c *.gcda *.gcno *.map *.ver
+CLEANSUFFIXES     = *.d *.o *~ *.h.c *.gcda *.gcno *.map *.ver *.version
 DISTCLEANSUFFIXES = *.pc
 LIBSUFFIXES       = *.a *.lib *.so *.so.* *.dylib *.dll *.def *.dll.a
 

avbuild/library.mak

 include $(SRC_PATH)/avbuild/common.mak
 
+-include $(SUBDIR)lib$(NAME).version
+
 LIBVERSION := $(lib$(NAME)_VERSION)
 LIBMAJOR   := $(lib$(NAME)_VERSION_MAJOR)
 LIBMINOR   := $(lib$(NAME)_VERSION_MINOR)
@@ -30,6 +32,9 @@ $(TESTPROGS): THISLIB = $(SUBDIR)$(LIBNAME)
 $(TESTPROGS) $(TOOLS): %$(EXESUF): %.o
 	$$(LD) $(LDFLAGS) $(LDEXEFLAGS) $$(LD_O) $$(filter %.o,$$^) $$(THISLIB) $(FFEXTRALIBS) $$(ELIBS)
 
+$(SUBDIR)lib$(NAME).version: $(SUBDIR)version.h | $(SUBDIR)
+	$$(M) $$(SRC_PATH)/avbuild/libversion.sh $(NAME) $$< > $$@
+
 $(SUBDIR)lib$(NAME).ver: $(SUBDIR)lib$(NAME).v $(OBJS)
 	$$(M)sed 's/MAJOR/$(lib$(NAME)_VERSION_MAJOR)/' $$< | $(VERSION_SCRIPT_POSTPROCESS_CMD) > $$@
 

avbuild/libversion.sh

+#!/bin/sh
+
+toupper(){
+    echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
+}
+
+name=lib$1
+ucname=$(toupper ${name})
+file=$2
+
+eval $(awk "/#define ${ucname}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
+eval ${ucname}_VERSION=\$${ucname}_VERSION_MAJOR.\$${ucname}_VERSION_MINOR.\$${ucname}_VERSION_MICRO
+eval echo "${name}_VERSION=\$${ucname}_VERSION"
+eval echo "${name}_VERSION_MAJOR=\$${ucname}_VERSION_MAJOR"
+eval echo "${name}_VERSION_MINOR=\$${ucname}_VERSION_MINOR"

configure

@@ -5318,19 +5318,6 @@ VERSION_SCRIPT_POSTPROCESS_CMD=${VERSION_SCRIPT_POSTPROCESS_CMD}
 SAMPLES:=${samples:-\$(LIBAV_SAMPLES)}
 EOF
 
-get_version(){
-    lcname=lib${1}
-    name=$(toupper $lcname)
-    file=$source_path/$lcname/version.h
-    eval $(awk "/#define ${name}_VERSION_M/ { print \$2 \"=\" \$3 }" "$file")
-    eval ${name}_VERSION=\$${name}_VERSION_MAJOR.\$${name}_VERSION_MINOR.\$${name}_VERSION_MICRO
-    eval echo "${lcname}_VERSION=\$${name}_VERSION"             >> avbuild/config.mak
-    eval echo "${lcname}_VERSION_MAJOR=\$${name}_VERSION_MAJOR" >> avbuild/config.mak
-    eval echo "${lcname}_VERSION_MINOR=\$${name}_VERSION_MINOR" >> avbuild/config.mak
-}
-
-map 'get_version $v' $LIBRARY_LIST
-
 map 'eval echo "${v}_FFLIBS=\$${v}_deps" >> avbuild/config.mak' $LIBRARY_LIST
 
 print_program_extralibs(){