Cannot open Include file(.h) in dll: error

Question

Hello friends,

I am building a C library file(DLL), which I'll be using in my C# app with marshalling.

But, I have some problem while compiling the library.

If I have a Console app with same C code it compiles and runs fine. But, now I have created a Class library project

and using a same Code in it. My code is using single .h file. The problem while compiling is, it can't find that .h file.

The .h which I am using has come with third party libraries.


But, it raises an compile time error only when I excute the program with library project.

The Directory structure of the library project is as Below:

-LibraryProjectDirectory
--Debug
---ExpectedOutputDLLfile
--Properties

--Resources
---The third party library files

.C file
.vcproj


In the Linker settings I have added the 'Resources' directory path.

But still i'm getting the error saying, "Cannot Open Include file: .h".

---

Santosh.

Answer 1

Have you tryed moving the .h file into the project by copying because sometimes it does not read write if it is not in the project.

Answer 2

The compiler looks in the Include paths for .h files, not the Linker paths.  So add your path in Includes.

Answer 3

As I said earlier my project is a class library.

Can you please let me know where exactly I should add the path for includes.

I am using VS2008.

---

Santosh.

Answer 4

Right click on Project.
Select properties
Expand Configuration properties
Select C/C++
Add in "Additional Include Directories"

Thanks
PKR

Answer 5

I tried with it but it didn't work....I don't know where am I going wrong?

---

Santosh.