fix: libnegentropy integration (#2996)

Dockerfile

@@ -47,7 +47,7 @@ RUN apk add --no-cache libgcc pcre-dev libpq-dev bind-tools
 RUN ln -s /usr/lib/libpcre.so /usr/lib/libpcre.so.3
 
 # Fix for 'Error loading shared library libnegentropy.so: No such file or directory'
-COPY --from=nim-build /app/libnegentropy.so ./
+COPY --from=nim-build /app/libnegentropy.so /usr/lib/
 
 # Copy to separate location to accomodate different MAKE_TARGET values
 COPY --from=nim-build /app/build/$MAKE_TARGET /usr/local/bin/

Makefile

@@ -166,6 +166,31 @@ clean-librln:
 # Extend clean target
 clean: | clean-librln
 
+######################
+###   NEGENTROPY   ###
+######################
+.PHONY: negentropy
+
+LIBNEGENTROPY_BUILDDIR := $(CURDIR)/vendor/negentropy/cpp
+LIBNEGENTROPY_FILE := libnegentropy.so
+
+deps: | negentropy
+
+clean: | negentropy-clean
+
+$(LIBNEGENTROPY_FILE):
+	$(MAKE) -C $(LIBNEGENTROPY_BUILDDIR) && \
+		cp $(LIBNEGENTROPY_BUILDDIR)/${LIBNEGENTROPY_FILE} ${LIBNEGENTROPY_FILE}
+
+negentropy: | $(LIBNEGENTROPY_FILE)
+    ## Pass libnegentropy to linker.
+    $(eval LIBNEGENTROPY_PATH := $(shell if [ -f "$(LIBNEGENTROPY_FILE)" ]; then echo "$(LIBNEGENTROPY_FILE)"; else echo "./$(LIBNEGENTROPY_FILE)"; fi))
+    $(eval NIM_PARAMS += --passL:$(LIBNEGENTROPY_PATH))
+
+negentropy-clean:
+	$(MAKE) -C $(LIBNEGENTROPY_BUILDDIR) clean && \
+		rm ${LIBNEGENTROPY_FILE}
+
 
 #################
 ## Waku Common ##
@@ -441,21 +466,3 @@ release-notes:
 # I could not get the tool to replace issue ids with links, so using sed for now,
 # asked here: https://github.com/bvieira/sv4git/discussions/101
 
-######################
-###   NEGENTROPY   ###
-######################
-.PHONY: negentropy
-
-## Pass libnegentropy to linker.
-NIM_PARAMS := $(NIM_PARAMS) --passL:./libnegentropy.so
-
-deps: | negentropy
-
-clean: | negentropy-clean
-
-negentropy:
-	$(MAKE) -C vendor/negentropy/cpp && \
-		cp vendor/negentropy/cpp/libnegentropy.so ./
-negentropy-clean:
-	$(MAKE) -C vendor/negentropy/cpp clean && \
-		rm libnegentropy.so