Include errors when compiling

[jmshrv]

Please fill in the following fields:

Pre-built SDK from the website or open-source from this repo: Pre-built SDK
Firebase C++ SDK version: 6.12.0
Firebase plugins in use (Auth, Database, etc.): Storage
Additional SDKs you are using (Facebook, AdMob, etc.): None
Platform you are using the C++ SDK on (Mac, Windows, or Linux): Linux
Platform you are targeting (iOS, Android, and/or desktop): Desktop (Linux)

Please describe the issue here:

(Please list the full steps to reproduce the issue. Include device logs, Unity logs, and stack traces if available.)

When I include Firebase Storage in my program, the imported libraries can't find their own imports. I have put the firebase_cpp_sdk directory next to my source file in src/. This is the directory structure of my program:

├── CMakeLists.txt
├── README.md
├── src
│   ├── firebase_cpp_sdk
│   │   ├── Android, frameworks, include, libs etc
│   └── main.cpp

1115 directories, 4058 files

Here is the relevant bit of my main.cpp (nothing else in it relates to Firebase at all):

#include "iostream"
#include "firebase_cpp_sdk/include/app.h"
#include "firebase_cpp_sdk/include/storage.h"

int main(int, char**) {
    // Initialise the Firebase app
    firebase::App * firebaseApp = firebase::App::Create(firebase::AppOptions());
    firebase::storage::Storage* firebaseStorage = firebase::storage::Storage::GetInstance(firebaseApp);

    // Creates a reference to the bucket
    firebase::storage::StorageReference bucketReference = firebaseStorage->GetReferenceFromUrl("gs://arduino-project-234f5.appspot.com");

Here is my CMakeLists.txt, although the same error still occurs when just doing g++ main.cpp:

cmake_minimum_required(VERSION "3.17.0")

project("camera-software")

file(GLOB camera-software_SRC
    "src/*"
)


# Sets the flags to include OpenCV. Should probably remove the unused ones
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -I/usr/include/opencv -lopencv_core -lopencv_highgui")

add_executable("${PROJECT_NAME}" "${camera-software_SRC}")

install(TARGETS "${PROJECT_NAME}" DESTINATION bin)
install(FILES "main.cpp" DESTINATION src)

Here is the error:

In file included from firebase_cpp_sdk/include/storage.h:23,
                 from main.cpp:4:
firebase_cpp_sdk/include/firebase/storage/controller.h:18:10: fatal error: firebase/storage/storage_reference.h: No such file or directory
   18 | #include "firebase/storage/storage_reference.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

[google-oss-bot]

This issue does not seem to follow the issue template. Make sure you provide all the required information.

[morganchen12]

Looks like this error is caused by the relative includes in the storage headers. Instead of putting the Firebase libraries in your src directory, place it somewhere external and add it to your target with target_link_libraries in CMake. See this sample (though it uses Firestore instead of Storage): snippets-cpp

And the resulting build log: https://github.com/firebase/snippets-cpp/pull/2/checks?check_run_id=553059792