CODEWITHSUNDEEP
c++eclipse
spinkus
spinkus

Reputation: 8560

Eclipse CDT build generated for simplest possible project does not set include path correctly

Eclipse: Kepler; CDT: 8.3.0

I just started using Eclipse CDT for a C++ project. I just used UI to add a new empty C++ class and associated header file to the project automatically. Then I press the build button. Build fails. The build scripts Eclipse CDT generated fail due to a simple issue of not setting an include path:

Building file: ../Foo.cpp
Invoking: Cross G++ Compiler
g++ -O0 -g3 -Wall -c -fmessage-length=0 -MMD -MP -MF"Foo.d" -MT"Foo.d" -o "Foo.o" "../Foo.cpp"
../Foo.cpp:8:17: fatal error: Foo.h: No such file or directory
compilation terminated.
make: *** [Foo.o] Error 1

It's building in the subdir Debug/ (that is the default build configuration CDT setup). If I go into the Debug/ dir and just add "-I../" to the g++ command above it works. The build scripts Eclipse CDT creates are failing to find the very source files CDT initialized for me. Why is this failing? Seems really silly. How do I fix it?

Upvotes: 0

Views: 226

Answers (1)

user2205930
user2205930

Reputation: 1086

A couple things to look at that could be the cause:

  1. Make sure you are using #include "Foo.h" and not #include <Foo.h>, quotes vs. brackets.
  2. Try removing the .h as in #include "Foo".
  3. Make sure your .h file is in the src folder and not outside of it. Since you said you had to add -I ../ to Debug than this most likely is your problem. The Foo.h file is outside of the folder where the rest of your project's .h files are.
  4. Check that Eclipse is automatically creating the Makefile and not expecting you to generate it. This most likely is not the case for you.

It is most likely something simple that was missed. I've run into these little issues in Eclipse on a regular basis.

Edit

From your comment it was #1 that was the solution to your problem. If Eclipse is automatically generating #include <Foo.h> instead of #include "Foo.h" when it is creating both the .h and .cpp for a class then that is a bug with Eclipse.

Upvotes: 1

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