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include path not found [message #1775899]

Wed, 08 November 2017 00:42

Joseph Yoo

Messages: 1
Registered: November 2017

Junior Member

Whenever I create a new C++ project, I get these warnings in the problems tab:

Invalid project path: Include path not found (\usr\include).
Invalid project path: Include path not found (\usr\include\w32api).
Invalid project path: Include path not found (\usr\lib\gcc\x86_64-pc-cygwin\6.4.0\include).
Invalid project path: Include path not found (\usr\lib\gcc\x86_64-pc-cygwin\6.4.0\include\c++).
Invalid project path: Include path not found (\usr\lib\gcc\x86_64-pc-cygwin\6.4.0\include\c++\backward).
Invalid project path: Include path not found (\usr\lib\gcc\x86_64-pc-cygwin\6.4.0\include\c++\x86_64-pc-cygwin).

I'm using GCC 6.4.0, and have Cygwin/MinGW installed. When I include <iostream> Eclipse tells me that it can't find it. My include paths for C++ in Properties -> C/C++ General -> Paths and symbols are:

C:\MinGW\lib\gcc\mingw32\6.3.0\include\c++
C:\MinGW\lib\gcc\mingw32\6.3.0\include\c++\mingw32
C:\MinGW\lib\gcc\mingw32\6.3.0\include\c++\backward
C:\MinGW\lib\gcc\mingw32\6.3.0\include
C:\MinGW\lib\gcc\mingw32\6.3.0\include-fixed
C:\MinGW\include

Why isn't eclipse trying to find the updated include paths? Any suggestions on how to fix it?

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Re: include path not found [message #1776000 is a reply to message #1775899]

Thu, 09 November 2017 04:13

David Vavra

Messages: 1426
Registered: October 2012

Senior Member

It looks like the discovery option for compiler builtins is set incorrectly.
Verify that the builtin provider for MinGW has been selected on the Providers tab.
Project --> Properties --> C/C++ General --> Preprocessor Include Paths, Macros etc. --> Providers tab
index.php/fa/31259/0/

Attachment: MinGWbuiltins.png
(Size: 10.88KB, Downloaded 14331 times)

[Updated on: Thu, 09 November 2017 05:56]

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Re: include path not found [message #1777772 is a reply to message #1775899]

Mon, 04 December 2017 14:20

Thomas Cox

Messages: 1
Registered: December 2017

Junior Member

I am having the same problem. I am using Gygwin instead of MinGW. My tool versions are
Elcipse 4.6.1 (Neon.1)
CDT 9.6.1
Cygwin 2.882 64-bit

My checklist of providers in Project --> Properties --> C/C++ General --> Preprocessor Include Paths, Macros etc. --> Providers tab looks as shown, except that MinGW is replaced with Cygwin.

That has not resolved the problem.

Another forum suggested pressing the Clear Entries button in Workspace Settings-> C/C++ -> Build -> Settings -> Discovery. That button is always disabled.

Does anyone have any additional suggestions?

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