[0.76.2] windows android build fails

[lovegaoshi]

Description

windows android build on 0.76.2 fails due to an invalid escape character error during cmake. this is probably bc 3956955 introduced REACT_ANDROID_DIR for cmake, but not escaping \ to / like BUILD_DIR did.

I just added REACT_ANDROID_DIR \ escaping under the CMAKE_HOST_WIN32 if above and it works again. like

if(CMAKE_HOST_WIN32)
        string(REPLACE "\\" "/" BUILD_DIR ${BUILD_DIR})
        string(REPLACE "\\" "/" REACT_ANDROID_DIR ${REACT_ANDROID_DIR})

Steps to reproduce

build 0.76.2 on windows

React Native Version

0.76.2

Affected Platforms

Build - Windows

Output of npx react-native info

n/a

Stacktrace or Logs

n/a

Reproducer

n/a

Screenshots and Videos

No response

[react-native-bot]

Warning

Missing reproducer: We could not detect a reproducible example in your issue report. Please provide either:

• If your bug is UI related: a Snack
• If your bug is build/upgrade related: a project using our Reproducer Template
• Otherwise send us a Pull Request with the RNTesterPlayground.js edited to reproduce your bug.

[boiboif]

Same issue after upgrade to 0.76.2

[migueldaipre]

Hey @lovegaoshi, thanks for reporting this issue.

Would you like to open the PR with the fix?

[aelassas]

Same issue with react-native 0.76.2.

[salmanhassankistpay]

Same Issue after 0.76.1 to 0.76.2

info Installing the app...

> Task :app:configureCMakeDebug[arm64-v8a] FAILED
C/C++: CMake Error at C:/Users/Salman/Desktop/personal/MyApp/node_modules/react-native/ReactAndroid/cmake-utils/ReactNative-application.cmake:42 (add_library):
C/C++: Syntax error in cmake code when parsing string
C/C++: C:\Users\Salman\Desktop\personal\MyApp\node_modules\react-native\ReactAndroid/cmake-utils/default-app-setup/OnLoad.cpp
C/C++: Invalid character escape '\U'.
C/C++: Call Stack (most recent call first):
C/C++: CMakeLists.txt:31 (include)
36 actionable tasks: 26 executed, 10 up-to-date

FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:configureCMakeDebug[arm64-v8a]'.

[CXX1429] error when building with cmake using C:\Users\Salman\Desktop\personal\MyApp\node_modules\react-native\ReactAndroid\cmake-utils\default-app-setup\CMakeLists.txt: -- The C compiler identification is Clang 17.0.2
-- The CXX compiler identification is Clang 17.0.2
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: C:/Users/Salman/AppData/Local/Android/Sdk/ndk/26.1.10909125/toolchains/llvm/prebuilt/windows-x86_64/bin/clang.exe - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler:

when newArchEnabled=false then build is running and working fine while enabling this to true it gives error .

[salmanhassankistpay]

Solved by adding this line

string(REPLACE "\" "/" REACT_ANDROID_DIR ${REACT_ANDROID_DIR}) on line number 36

\node_modules\react-native\ReactAndroid\cmake-utils\ReactNative-application.cmake

[yadhukrishnasm]

Check by uninstalling and installing node modules, and i changed the react-native version to 18.3.1
it seems like 18.3.2 has this issue

[javache]

Resolved by #47641

[Rehana001]

Description

windows android build on 0.76.2 fails due to an invalid escape character error during cmake. this is probably bc 3956955 introduced REACT_ANDROID_DIR for cmake, but not escaping \ to / like BUILD_DIR did.

I just added REACT_ANDROID_DIR \ escaping under the CMAKE_HOST_WIN32 if above and it works again. like

if(CMAKE_HOST_WIN32)
        string(REPLACE "\\" "/" BUILD_DIR ${BUILD_DIR})
        string(REPLACE "\\" "/" REACT_ANDROID_DIR ${REACT_ANDROID_DIR})

Steps to reproduce

build 0.76.2 on windows

React Native Version

0.76.2

Affected Platforms

Build - Windows

Output of npx react-native info

n/a

Stacktrace or Logs

n/a

Reproducer

n/a

Screenshots and Videos

No response

Thankyou this solution worked for me :)

[HITESHDALVI]

@lovegaoshi , Thanks saved a lot of time