g++ makefile, include error, no such file or directory

Question

I am trying to include the following headers:

#include <libs/serialization/example/portable_binary_iarchive.hpp>
#include <libs/serialization/example/portable_binary_oarchive.hpp>

These files are located in a path like:

/home/nobody/boost_1_45_0/libs/serialization/example/portable_binary_iarchive.hpp

In my Makefile, I have added:

-I/home/nobody/boost_1_45_0/libs

However, when I compile, I get the error messages like:

error: libs/serialization/example/portable_binary_iarchive.hpp: No such file or directory

Can anybody tell me what I am doing wrong here? I am also including boost libraries like

#include <boost/archive/binary_oarchive.hpp>

However, to get those, it is sufficient to do in my Makefile:

-I/usr/include/boost

Why doesn't this work for the headers in the other location? How should I change my Makefile? The first statement current looks like this:

test: test.o 
    g++ -O3 -ffast-math -funroll-loops -ansi -pedantic-errors -L/usr/lib -lboost_filesystem -lboost_serialization -lboost_iostreams -lz -I/usr/include/boost -I/home/nobody/boost_1_45_0/libs -o test test.o

Answer 1

To get

#include <libs/serialization/example/portable_binary_iarchive.hpp>

from directory

/home/nobody/boost_1_45_0/libs/serialization/example/portable_binary_iarchive.hpp

your Makefile needs

-I/home/nobody/boost_1_45_0

Notice that I omitted the /libs from the end. That's because your #include directive already lists that directory.

---

As for your second example, is the file you want at this location:

/usr/include/boost/boost/archive/binary_oarchive.hpp
                   ^^^^^ (repeated boost here)

If not g++ is likely defaulting to /usr/include as the search space for

#include <boost/archive/binary_oarchive.hpp>

Ie., your

-I/usr/include/boost

is useless to the compiler.