IllegalStateException: The "build-wrapper-dump.json" file was found empty


I try to analyse a project and I applied the following steps, eventually I have ‘“build-wrapper-dump.json” file was found empty’ error. However, I can see that the file has a content (whether it is meaningful or not) Would you please help me?

  1. I change the memory use for SonarQube since otherwise it fails with the error java.lang.OutOfMemoryError: Java heap space:
    # export SONAR_SCANNER_OPTS="-Xmx16384m -XX:MaxPermSize=16384m -XX:ReservedCodeCacheSize=2048m

  2. I run the following line to use a script to use the wrapper ( has source, lunch and build commands that use make, the script compiles the project successfully):
    # ../build-wrapper-linux-x86/build-wrapper-linux-x86-64 --out-dir bwoutput ../

  3. I run the following command with the correct values that I got from SonarQube server:
    ../sonar-scanner- -Dsonar.projectKey=<key_info> -Dsonar.sources=. -Dsonar.login=<value> -Dsonar.cfamily.threads=4 -X

  4. After a long analysis, I get the following error:

Error during SonarScanner execution
java.lang.IllegalStateException: The "build-wrapper-dump.json" file was found empty. Please make sure that:
  * you are using the latest version of the build-wrapper and the CFamily analyzer
  * your compiler is supported
  * you are wrapping your build correctly
  * you are wrapping a full/clean build
  * if you are building your project inside a Docker container, build-wrapper is wrapping the build process inside the container and not wrapping the external Docker process

Thank you


# make --version
GNU Make 4.2.1
Built for x86_64-pc-linux-gnu
Copyright (C) 1988-2016 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.

# ./sonar-scanner- --version
INFO: Scanner configuration file: /home/sonar-scanner-
INFO: Project root configuration file: NONE
INFO: SonarScanner
INFO: Java Eclipse Adoptium (64-bit)
INFO: Linux 5.4.0-124-generic amd64

# ./build-wrapper-linux-x86/build-wrapper-linux-x86-64 --version
build-wrapper, version 6.32 (linux-x86)
Copyright (C) 2014-2022 SonarSource SA,

Usage: ./build-wrapper-linux-x86/build-wrapper-linux-x86-64 --out-dir <output directory> <build command>


Welcome to the community!

Thanks for providing versions! Can you also check your SonarQube page footer and provide the version of the SonarQube server?



The SonarQube Server has Enterprise Edition - Version 9.4 (build 54424).

Thank you

Hello Ann,

At this point, I feel a bit stucked. Would you please show me some points to check and/or consider to be able to continue?

Thank you


I’ve flagged this for more expert attention.


1 Like

Hi @cppdev,

Are you trying to analyze languages other than C, Obj-C, and C++? because this error should appear before the analysis of those languages starts.

  • What compiler are you using?
  • Does clean build you project? the clean part is essential for the build-wrapper to work.
  • Can you share the output of ../build-wrapper-linux-x86/build-wrapper-linux-x86-64 --out-dir bwoutput ../ and the build-wrapper.json and .log files? If you prefer I can send you a private message to share them privately.

Build-wrapper JSON is supposed to contain the entry for all the files compiled with your


Hello @Abbas_Sabra,

Thank you for the help. I have been collecting answers for all the questions, and I need to ask some of them to other developers. Would you please send me a private message? I will try to make them ready by tomorrow.

Thank you

1 Like

Hello @cppdev,
the build-wrapper JSON is empty. we already faced a similar issue with the exotic build system. Here is the ticket for android AOSP: [CPP-2372] - Jira

As a workaround, I suggest that you use a compilation database instead of the build-wrapper.
Soong build system supports generating compilation database internally:

Compdb (compile_commands.json) Generator

More on compilation database:


1 Like

Hello @Abbas_Sabra

Thank you, I will check these links.

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