Default include paths for Mac not sufficient (c_cpp_properties.json)

[JeffreyCA]

Operating System: macOS
Version: 10.12.6

I have the following settings enabled:

"C_Cpp.intelliSenseEngine": "Default",
"C_Cpp.intelliSenseEngineFallback": "Enabled",

I get include errors if I try to include the standard library iostream:

#include errors detected. Please update your includePath. IntelliSense features for this translation unit

cannot open source file "endian.h" (dependency of "iostream")

In my c_cpp_properties.json file I have to add the following include path in order to resolve the include error:

"includePath": [
...
    "/usr/include/machine",
...
],

This is because the missing endian.h file is present in /usr/include/machine.

Could you please add this extra path to the default include path list for Mac?

[dmaisano]

I am having the same error, I went into my c_cpp_properties.json settings and tried adding "/usr/include/machine", to the top of the includePath array with no success in suppressing and fixing the error. Would you be able to link a copy of your c_cpp_properties.json file.

[bobbrow]

@dmaisano try looking in /usr/include/i386. /usr/include/machine/endian.h just forwards there. If it's not there, then try find /usr/include -name "endian.h"

[JeffreyCA]

Here is my copy if you still need it.

[bobbrow]

@JeffreyCA, does /usr/include/i386 exist on your Mac? Given @dmaisano's report, it seems like adding /usr/include/i386 to the path would be more effective.

[JeffreyCA]

@bobbrow Yes, /usr/include/i386exists. I just added it and also works.

[dmaisano]

I was able to test out your copy of the settings file and it does work, I must have done something wrong in my attempt at adding /usr/include/machine to the includePath. I was able to test out @bobbrow's suggestion and it does work just as well which is nice to see both of these as viable solutions.

[dmaisano]

These are the settings I use for Windows and Mac, I appreciate the help @bobbrow @JeffreyCA :)

[bobbrow]

We released 0.12.3 which adds this path by default now. The next time you create a new c_cpp_properties.json file, you will see the path added.

[bobbrow]

The root cause for this is being tracked by new issue: #1005. Add "__LITTLE_ENDIAN__" to your "defines" array in c_cpp_properties.json and you won't need to add a path to "endian.h".