[Bug]: fatal error: gtest/gtest.h: No such file or directory

[jonben3215]

Describe the issue

I am using MSYS2 to run C++ and I tried every single thing. I looked up documentation for on MSYS2 to install gtest and all he toolchain and everything is present how ever VS and VSC both give the same error: fatal error: gtest/gtest.h: No such file or directory. Here is my code:

`// test.cpp
#include <gtest/gtest.h>

// A simple test case
TEST(SampleTest, AssertionTrue) {
EXPECT_TRUE(true);
}
`

I at this point I have no clue what is happening I tried everything I could look up to resolve this issue.

Steps to reproduce the problem

This is hard to recreate. I am running this the first time. Can't really re-create the problem.

What version of GoogleTest are you using?

Name : mingw-w64-x86_64-gtest
Version : 1.14.0-1

What operating system and version are you using?

Windows 11 version 23H2

What compiler and version are you using?

g++ (Rev3, Built by MSYS2 project) 13.2.0

What build system are you using?

cmake version 3.30.3

Additional context

No response

[pgawro]

Seems this is not a bug bur @jonben3215 perhaps you forget to add line in cmake like this find_library(GTest gtest) for did you forget to enable C++17 for your project. Could you pass output from command line when you try to configure your project or build?

[jonben3215]

How do I access CMake so that I need to add the find_library(GTest gtest)? I failed to mention that I am running my code using g++ -std=c++<version> <.cpp> -o <exe name>. I am currently not running any cmake until later down my project. In addition I have also made sure that all gtest includes and libs are all present in my MSYS2 folders where MinGW64 is, but it seems to fail.

However, when I paste my entire location of the gtest.h I get a different error saying another .h file is missing or can't be found.

[phetdam]

@jonben3215 If you are not using CMake as a build system you will need to tell GCC explicitly the directory that the Google Test headers are located in and the Google Test libraries to link against. E.g. you need to do this:

g++ [other options] -I/path/to/includes -o your_program source1.cc [source2.cc ...] -lgtest -lgtest_main

The -I option should give the directory path to where the gtest directory that contains the Google Test header files is at.

If you are using CMake (recommended, build systems make building your code much easier), use find_package:

# look for Google Test 1.12.0 for example (hard error if not found)
find_package(GTest 1.12.0 CONFIG REQUIRED)
# add your program + link against the CMake targets
add_executable(my_program source1.cc source2.cc)  # etc.
target_link_libraries(my_program PRIVATE GTest::gtest GTest::gtest_main)

If CMake can't find Google Test then try setting GTEST_ROOT in the environment (or via the -D CMake option) to the path where the Google Test installation root is. E.g. there should be a bin, include, and lib directory in that folder, and include should have gtest and all the Google Test headers in that folder.