Searching for include error

Question

Windows 11, Visual Studio 2019, C++
I am trying to get a console project to run the code for RIPEMD-160. It was found via github but has a huge number of includes. One of them chokes on this line:

typedef __int64_t	__blkcnt_t;	/* blocks allocated for file */  

to get a console Copied it to a new console app and discovered that in the new file it does not like the leading underscores before __int64_t. Problem is, there are many of them.
Question 1
Is there some way to make the leading underscore palatable to VS?
Do I need to add my own set of files with things like

typedef int64_t     __int64t  

Question 2
Can VS be encouraged to chase down every include to look for something?
I wanted to do a search to find what file includes this so did a search for _types.h.
In working this project I have created several new directories and added multiple include files for this Linux looking project. They are in

E:\WX\LINUX_INCLUDES

They are not in the project directory but in my project item, go here: click Project -> Properties ->Additional Include Directories, I added those needed directories.

When I do ctl-F, edit in _types.h, I want every include file to be searched. Instead, VS stops searching once it exhausts the files in the local directory.

Thank you for your time and patience.

Answer 1

Hi, @Bryan Kelly
Question 1:
You can combine the snippet:

typedef int64_t      __int64_t;  
typedef  __int64_t  __blkcnt_t;  

Question 2:

CTRL-F->Click the inverted triangle->Find in files.
Click the three dots to search the specified directory.

Best regards,

Minxin Yu

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Answer 2

Re the 1st question: that provides the basic answer. But there is a long list. This is from gethub. I think the best route is one of two choices
A is this really needed in the small section I am using
B Create a new include file of that long list and add it somewhere.

Re the 2nd question

WONDERFUL!!!!! I did not know to do that. You have saved me much time.

Thank you.