Makefile: remove redundancies

Makefile

@@ -3,6 +3,7 @@
 CXXFLAGS=-std=c++17 -O0 -g -no-pie -pipe -MMD -Wall -Wextra
 RELEASE_CXXFLAGS=-std=c++17 -O3 -pipe -MMD -Wall -Wextra
 LDFLAGS=-lsqlite3 -lpthread -lcrypto -lstdc++fs -lseccomp
+INCLUDEFLAGS=-I submodules/sqlitemoderncpp/hdr -I submodules/cpp-httplib -I submodules/qssb.h
 
 CXX=g++
 
@@ -43,7 +44,7 @@ GTEST_OBJECTS=$(filter-out qswiki.o, $(WIKIOBJECTS))
 release: CXXFLAGS=$(RELEASE_CXXFLAGS)
 release: qswiki
 qswiki: $(WIKIOBJECTS)
-	$(CXX) $(WIKIOBJECTS) ${LDFLAGS} -I submodules/sqlitemoderncpp/hdr -I submodules/cpp-httplib  -o qswiki
+	$(CXX) $(WIKIOBJECTS) ${LDFLAGS} ${INCLUDEFLAGS}  -o qswiki
 
 test: $(TESTOBJECTS)
 	$(CXX) $(TESTOBJECTS) ${LDFLAGS} -o test
@@ -52,7 +53,7 @@ gtest: $(GTESTS_TESTDIR)/*.cpp $(GTEST_OBJECTS)
 	$(CXX) -o gtest $(GTESTS_TESTDIR)/*.cpp $(GTEST_OBJECTS) $(GTEST_CXXFLAGS) $(GTEST_DIR)/src/gtest_main.cc $(GTEST_DIR)/src/gtest-all.cc $(GTEST_LDFLAGS)
 
 %.o:%.cpp
-	$(CXX) ${CXXFLAGS} ${LDFLAGS} -I submodules/sqlitemoderncpp/hdr -I submodules/cpp-httplib -c -o $@ $<
+	$(CXX) ${CXXFLAGS} ${LDFLAGS} ${INCLUDEFLAGS} -c -o $@ $<
 
 clean:
 	rm -f $(OBJECTS) $(DEPENDS)