Unable to compile the c++ SDK with Cmake on Mac | target == iOS

[schramm]

Please fill in the following fields:

Pre-built SDK from the website or open-source from this repo:
Open source from: https://github.com/firebase/firebase-cpp-sdk.git

Firebase C++ SDK version: firebase_cpp_sdk_6.12.0
Firebase plugins in use (Auth, Database, etc.): Auth
Additional SDKs you are using (Facebook, AdMob, etc.): none
Platform you are using the C++ SDK on (Mac, Windows, or Linux): Mac
Platform you are targeting (iOS, Android, and/or desktop): iOS

Please describe the issue here:

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

I am trying to build firebase-cpp-sdk using CMake on MacOSX, targeting iOS.

When I run: cmake -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/ios.cmake ..
I get the following error:

[100%] Built target protobuf
-- Failed to find LLVM FileCheck
-- git Version: v0.0.0
-- Version: 0.0.0
-- Performing Test HAVE_THREAD_SAFETY_ATTRIBUTES -- failed to compile
-- Performing Test HAVE_STD_REGEX -- compiled but failed to run
-- Performing Test HAVE_GNU_POSIX_REGEX -- failed to compile
-- Performing Test HAVE_POSIX_REGEX -- compiled but failed to run
CMake Error at ios_build/external/src/firestore-build/external/src/benchmark/CMakeLists.txt:251 (message):
Failed to determine the source files for the regular expression backend
From the CMakeError.log:

Run Build Command(s):/usr/bin/make cmTC_fe8f5/fast && /Applications/Xcode.app/Contents/Developer/usr/bin/make -f CMakeFiles/cmTC_fe8f5.dir/build.make CMakeFiles/cmTC_fe8f5.dir/build
Building CXX object CMakeFiles/cmTC_fe8f5.dir/src.cxx.o
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang++ -std=c++11 -Wall -Wextra -Wshadow -pedantic -pedantic-errors -Wshorten-64-to-32 -fstrict-aliasing -Wno-deprecated-declarations -fno-exceptions -Wstrict-aliasing -DHAVE_CXX_FLAG_WD654 -wd654 -arch arm64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS13.2.sdk -wd654 -o CMakeFiles/cmTC_fe8f5.dir/src.cxx.o -c /Users/schramm/Desktop/firebase-cpp-sdk/ios_build/CMakeFiles/CMakeTmp/src.cxx
clang: error: unknown argument: '-wd654'
clang: error: unknown argument: '-wd654'
make[1]: *** [CMakeFiles/cmTC_fe8f5.dir/src.cxx.o] Error 1
make: *** [cmTC_fe8f5/fast] Error 2

Can anyone help me?

[google-oss-bot]

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

[patm1987]

Hi @schramm ,

After some investigation, I've reproduced your issue so the team is tracking it. In the meantime, I have a workaround that will work if you're not using Firestore:

First, updating to the latest Firebase SDK (6.15) will get you to a better state (your cmake command will work) but there will still be a build issue. To build without Firestore support (the library that's currently failing), run:

cmake -DCMAKE_TOOLCHAIN_FILE=../cmake/toolchains/ios.cmake -DFIREBASE_INCLUDE_FIRESTORE=OFF ..

If you do need Firestore support, the team is actively investigating the issue. The binary distribution should work if you need Firestore support on iOS (and can act as a drop-in replacement in CMake).

I hope that helps!

[schramm]

Hi @patm1987. Thanks a lot. I just tried to build firebase using cmake and it worked without any issues.