Header file dependancy not working

Question

I have written below Makefile and as per answer to this question added rules for header file dependencies but it is not working. I did a clean and then build. After that I modified Parse.h using touch command and ran "make all" it says Test.exe is up to date. I got same output with just "make" command too.

Can anyone please let me know where am I gone wrong.

RM := rm -rf
MKDIR := mkdir -p
FIND := find
CPIO := cpio
CD := cd
MV := mv
# Set compiler flags
ifeq ($(BUILD_TYPE),DEBUG)
 COMPILE_FLAGS= -c -fpic -DDBG=1 -g -DUSE_UTLPATMAT=1 -Wall
else ifeq ($(BUILD_TYPE),RELEASE)
 COMPILE_FLAGS= -c -fpic -O3 -DUSE_UTLPATMAT=1 -Wall
else ifeq ($(BUILD_TYPE),PERF)
 COMPILE_FLAGS= -c -fpic -O3 -DUSE_UTLPATMAT=1 -DPERF_COMPONENT -Wall
else
 COMPILE_FLAGS= -c -fpic -O3 -DUSE_UTLPATMAT=1 -Wall
endif
export STFP_HOME = $(shell cd "$(CURDIR)/.."; pwd)
STFP_LIB = $(STFP_HOME)/lib
STFP_BIN = $(STFP_HOME)/bin
$(shell mkdir -p ${STFP_LIB})
$(shell mkdir -p ${STFP_BIN})
STFP_INC = $(CURDIR)/SP
SPTEST_SRC = $(CURDIR)/SPTest
SPTEST_INC = $(CURDIR)/SPTest
STFP_SRC = $(CURDIR)/SP
STFP_INC = $(CURDIR)/SP
UTILITIES_SRC_DIR = $(CURDIR)/../utilities
LIBS= -L${CLIENT_LIB} 
INCS_DIRS= -I${CLIENT_INC} 
#Subdivision Publisher Test
SPTESTSRCS=\
$(SPTEST_SRC)/Parse.cpp \
$(SPTEST_SRC)/Main.cpp 
SPTESTOBJS=$(patsubst %.c,%.o,$(patsubst %.cpp,%.o,$(SPTESTSRCS)))
all := $(STFP_BIN)/Test.exe 
#################### Main targets #####################################
all:$(all)
clean:
 find $(STFP_SRC)/ -name "*.o" | xargs rm -rf
 find $(SPTEST_SRC)/ -name "*.o" | xargs rm -rf
 rm -rf $(STFP_LIB)
 rm -rf $(STFP_BIN)
#######################################################################
$(STFP_BIN)/Test.exe: $(SPTESTOBJS)
 $(CXX) -g $(INCS_DIRS) \
 $(SPTESTOBJS) -o $@ \
 $(LIBS) -lmodpbase64 -lboost_regex -lboost_filesystem -lboost_system -lboost_serialization \
 -lutility
%.o : %.cpp
 $(CXX) -DPROVIDE_LOG_UTILITIES $(COMPILE_FLAGS) $(INCS_DIRS) -o $@ $<
%.o : %.c
 $(CC) -DPROVIDE_LOG_UTILITIES $(COMPILE_FLAGS) $(INCS_DIRS) -o $@ $<
################# Dependencies #########################
depend: .depend
.depend: $(SPTESTSRCS)
 rm -f .depend
 $(CXX) -DPROVIDE_LOG_UTILITIES $(COMPILE_FLAGS) $(INCS_DIRS) -MM -$(SPTESTSRCS) > .depend
-include .depend
########################################################

Thanks

• Some programmer dude: Try using make -d to see a lot of debugging information about what make does. Also, are you sure that SPTESTOBJS is correct? Try making a dummy target that prints it. Are the dependencies in .depend correct? Have you checked it?
• user3494614: I have checked .depend file and it looks correct. Also since normal build is working ok like if I modify Parse.cpp then only Parse.cpp gets recompiled and link so SPTESTOBJS should be correct.

Answer 1

You seem to expect .o files in SPTest. You could do so by using:

SPTest/%.o: SPTest/%.cpp
 $(CXX) -DPROVIDE_LOG_UTILITIES $(COMPILE_FLAGS) $(INCS_DIRS) -o $@ $<

OR by using (where @D is directory and @F is filename):

%.o : %.cpp
 $(CXX) -DPROVIDE_LOG_UTILITIES $(COMPILE_FLAGS) $(INCS_DIRS) -o $(@D)/$(@F) $<

Let me know if you still get errors.

• blackpen: @Beta, Noted. Tx.