CODEWITHSUNDEEP
c++
SunnyMonster
SunnyMonster

Reputation: 570

Expected C++ compiler error in yvals_core.h

I am using CMake with Visual Studio and I keep getting the error yvals_core.h(23): fatal error C1189: #error: STL1003: Unexpected compiler, expected C++ compiler.

This error only happened after I moved all my includes to my precompiled header. It looks like the __cplusplus macro is not defined for some reason.

More information: I just have a header file including all the includes I need. Then I just added that header file to the precompiled header by using target_precompile_headers

Upvotes: 2

Views: 13637

Answers (4)

pbies
pbies

Reputation: 732

Library iostream should stay in the files. The problem is with extension of code files - it should be .cpp, not .c. You don't need to remove iostream. But then use other command to compile+link, not:

cl perfdata.c -o perfdata -lpdh

but use this one:

cl perfdata.cpp /link pdh.lib

(That's an example)

Upvotes: 0

Alexandre
Alexandre

Reputation: 506

I got a very similar error when compiling with a MSVC2019 compiler (14.29.30133) with VS2022, where the includes paths were still pointing to the 2022 version.

I could fix this error by passing "-vcvars_ver=14.29.30133" as argument to the vcvars64.bat script which sets up the environment, so that everything is consistent (on the older version).

Upvotes: 0

David López
David López

Reputation: 403

I got this error in MS Visual Studio 2022 with a C project that mistakenly included <iostream> Removing this fixed the issue.

Upvotes: 1

LeoThaGodKing
LeoThaGodKing

Reputation: 31

I have recently experienced the same issue.

I noticed that the iostream.h library used for C++ was included in a .c file within my program. Once I removed this include directive (#include <iostream.h>) the error was resolved.

Check all the include directives within the program and verify them for correctness. Please let me know if this helps.

Upvotes: 3

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