problem finding a header with a c++ makefile

Answer 1

Maybe you should change the INCDIR to an absolute path rather than a relative one? The current working directory may not be what you think it is while make is running.

Answer 2

There's obviously a problem somewhere because your CFLAGS definitions are not being passed to g++.

Change:

CPP_OBJS = $(TEMP)partyhack.o

to:

CPP_OBJS = $(TEMP)/partyhack.o

Other than that I don't see anything wrong.

Answer 3

Make appears to be using a built-in rule as opposed to your custom rule for *.cpp files. (See the ordering of the -c and -o options in make's output -- it's not the same as the ones you wrote). Check the definition of your C++ file rule.

My best guess is that the references to $(TEMP) are throwing it off. Where is this defined?

Also note that for C++, usually the variables CXX and CXXFLAGS are used for the compiler program and the flags, respectively. CPP is used for the C preprocessor program, CPPFLAGS for preprocessor flags and CFLAGS is used for the C compiler flags. That's probably why make is not using your CFLAGS when using its built-in C++ rules.

Answer 4

What happens here, is that

1) make evaluates the target all, which resolves to partyhack.

2) make evaluates the target partyhack, which resolves to $(CPP_OBJS)

3) make evaluates the target $(CPP_OBJS), which resolves to $(TMP)partyhack.o

4) make evaluates the target $(TMP)partyhack.o which resolves to partyhack.o

This is because TMP is not defined. Also note that the slash is missing after $(TMP).

5) make evaluates the target partyhack.o, and applies the implicit rule g++ -c -o partyhack.o partyhack.cpp

It does not apply the rule you specified, namely $(TEMP)/%.o : $(SRCDIR)/%.cpp because TEMP is not defined, so this evaluates to /partyhack.o : ./partyhack.cpp, and we are not building /partyhack.o because we are not in the root directory.

6) g++ does not find the include file, because the include directories were not passed to it, because your rule was not applied.

To fix this:

First, you need to define TEMP (see Nick Meyers answer).

TEMP = .

Second, you need to change the definition of CPP_OBJS (as Paul R suggested).

CPP_OBJS = %(TEMP)/partyhack.o

This will work if you invoke make inside the directory CppPartyHack/PartyHack.