soccr: Generate config.h dynamically

Otherwise there is a broken symlink which makes tags/etags unhappy.

travis-ci: success for soccr: Generate config.h dynamically (rev5)
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
[extended .gitignore, maked link relative to sources]
Signed-off-by: Dmitry Safonov <dsafonov@virtuozzo.com>
Acked-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>

.gitignore

@@ -27,6 +27,7 @@ criu/arch/*/syscalls.S
 criu/include/config.h
 criu/include/syscall-codes.h
 criu/include/syscall.h
+soccr/config.h
 criu/include/version.h
 criu/pie/restorer-blob.h
 criu/pie/parasite-blob.h

Makefile

@@ -188,7 +188,8 @@ endif
 
 #
 # Configure variables.
-export CONFIG_HEADER := $(SRC_DIR)/criu/include/config.h
+CONFIG_HEADER_REL := criu/include/config.h
+export CONFIG_HEADER := $(SRC_DIR)/$(CONFIG_HEADER_REL)
 ifeq ($(filter clean mrproper,$(MAKECMDGOALS)),)
 include $(SRC_DIR)/Makefile.config
 endif
@@ -204,9 +205,12 @@ $(eval $(call gen-built-in,images))
 # Next the socket CR library
 #
 SOCCR_A := soccr/libsoccr.a
-soccr/%: $(CONFIG_HEADER) .FORCE
+SOCCR_CONFIG := $(SRC_DIR)/soccr/config.h
+$(SOCCR_CONFIG): $(CONFIG_HEADER)
+	$(Q) ln -s ../$(CONFIG_HEADER_REL) $@
+soccr/%: $(SOCCR_CONFIG) .FORCE
 	$(Q) $(MAKE) $(build)=soccr $@
-soccr/built-in.o: $(CONFIG_HEADER) .FORCE
+soccr/built-in.o: $(SOCCR_CONFIG) .FORCE
 	$(Q) $(MAKE) $(build)=soccr all
 $(SOCCR_A): |soccr/built-in.o
 
@@ -253,6 +257,7 @@ mrproper: subclean
 	$(Q) $(MAKE) $(build)=criu $@
 	$(Q) $(MAKE) $(build)=soccr $@
 	$(Q) $(RM) $(CONFIG_HEADER)
+	$(Q) $(RM) $(SOCCR_CONFIG)
 	$(Q) $(RM) $(VERSION_HEADER)
 	$(Q) $(RM) include/common/asm
 	$(Q) $(RM) cscope.*

soccr/config.h

-../criu/include/config.h
\ No newline at end of file