fix: Prioritise local cpp (use default as fallback) (#48340)

Summary:
https://github.com/facebook/react-native/pull/47379 removed local cpp sources from the sources being built with the app. This resulted in a local `android/app/src/main/jni/OnLoad.cpp` file being ignored at build time. I have therefore added logic to the cmake file to prioritise local `cpp` files and fallback to `${REACT_ANDROID_DIR}/cmake-utils/default-app-setup/*.cpp` if none exist.

This resolves https://github.com/facebook/react-native/issues/48298

[ANDROID] [FIXED] - Prioritise local OnLoad.cpp, falling back to default-app-setup

Pull Request resolved: https://github.com/facebook/react-native/pull/48340

Test Plan:
- Followed the https://reactnative.dev/docs/the-new-architecture/pure-cxx-modules guide (which was broken > 0.76.1)
- Applied the patch to the reproduction repository linked to https://github.com/facebook/react-native/issues/47352 to ensure no regression

Reviewed By: cipolleschi

Differential Revision: D67736012

Pulled By: cortinico

fbshipit-source-id: 87f6b8edf1613682585a94e1d1b3e6b4b792e4f5
This commit is contained in:
timbocole
2025-01-08 14:08:22 +00:00
committed by Riccardo Cipolleschi
parent 07b7953af1
commit e6374c6e60
@@ -34,9 +34,24 @@ set(BUILD_DIR ${PROJECT_BUILD_DIR})
file(TO_CMAKE_PATH "${BUILD_DIR}" BUILD_DIR)
file(TO_CMAKE_PATH "${REACT_ANDROID_DIR}" REACT_ANDROID_DIR)
file(GLOB input_SRC CONFIGURE_DEPENDS
${REACT_ANDROID_DIR}/cmake-utils/default-app-setup/*.cpp
${BUILD_DIR}/generated/autolinking/src/main/jni/*.cpp)
if (PROJECT_ROOT_DIR)
# This empty `if` is just to silence a CMake warning and make sure the `PROJECT_ROOT_DIR`
# variable is defined if user need to access it.
endif ()
file(GLOB override_cpp_SRC CONFIGURE_DEPENDS *.cpp)
# We check if the user is providing a custom OnLoad.cpp file. If so, we pick that
# for compilation. Otherwise we fallback to using the `default-app-setup/OnLoad.cpp`
# file instead.
if(override_cpp_SRC)
file(GLOB input_SRC CONFIGURE_DEPENDS
*.cpp
${BUILD_DIR}/generated/autolinking/src/main/jni/*.cpp)
else()
file(GLOB input_SRC CONFIGURE_DEPENDS
${REACT_ANDROID_DIR}/cmake-utils/default-app-setup/*.cpp
${BUILD_DIR}/generated/autolinking/src/main/jni/*.cpp)
endif()
add_library(${CMAKE_PROJECT_NAME} SHARED ${input_SRC})