Update to c++ 17

[AustinBenoit]

Description

Provide details of the change, and generalize the change in the PR title above.

Update to c++ 17

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Testing

Describe how you've tested these changes. Link any manually triggered Integration tests or CPP binary SDK Packaging Github Action workflows, if applicable.

Currently running all test apps on desktop, iOS and android

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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Notes

• Bug fixes and feature changes require an update to the Release Notes section of release_build_files/readme.md.
• Read the contribution guidelines CONTRIBUTING.md.
• Changes to the public API require an internal API review. If you'd like to help us make Firebase APIs better, please propose your change in a feature request so that we can discuss it together.

[gemini-code-assist]

Summary of Changes

Hello, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request modernizes the project's build configuration by upgrading the required C++ standard from C++14 to C++17. This change allows the codebase to leverage newer language features and improvements available in C++17, potentially enhancing code quality, performance, and developer productivity. The update is applied consistently across the main project and all integration test modules.

Highlights

• C++ Standard Update: The project's C++ standard has been updated from C++14 to C++17 across all relevant CMakeLists.txt files, including the main project, integration tests for various Firebase services (Analytics, App, App Check, Auth, Database, Firestore, Functions, Installations, Messaging, Remote Config, Storage, UMP), and the testing module.
• Build Configuration: All CMake configurations now explicitly require C++17, preventing fallback to earlier versions, ensuring consistency in the build environment.

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Changelog

• CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• analytics/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• app/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• app/rest/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• app_check/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• auth/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• database/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• firestore/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• firestore/integration_test_internal/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• functions/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• installations/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• messaging/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• remote_config/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• storage/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• testing/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.
• ump/integration_test/CMakeLists.txt
  • Updated CMAKE_CXX_STANDARD from 14 to 17.

Activity

• The author, AustinBenoit, has initiated testing across desktop, iOS, and Android platforms to validate the changes.

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[gemini-code-assist]

Code Review

This pull request updates the C++ standard from 14 to 17 across various CMakeLists.txt files. The changes are straightforward, but several files have outdated comments that still refer to C++14. I've added suggestions to update these comments for consistency and maintainability.

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)

[gemini-code-assist]

This comment is outdated. With the C++ standard updated to 17, this should be updated as well for consistency.

# Firebase C++ SDK requires C++17.
set (CMAKE_CXX_STANDARD 17)