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Troubleshooting.md

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Troubleshooting

In case of an error, you might find an answer of how to deal it here.

Building Ladybird

CMake fails to configure the build because it's outdated

Ensure your CMake version is >= 3.25 with cmake --version. If your system doesn't provide a suitable version of CMake, you can download a binary release from the CMake website.

GCC is missing or is outdated

Ensure your gcc version is >= 13 with gcc --version. Otherwise, install it. If your gcc binary is not called gcc you have to specify the names of your C and C++ compiler when you run cmake, e.g. cmake ../.. -GNinja -DCMAKE_C_COMPILER=gcc-13 -DCMAKE_CXX_COMPILER=g++-13.

Legacy renegotiation is disabled

Ensure your /etc/ssl/openssl.cnf file has the following options:

[openssl_init]
ssl_conf = ssl_sect

[ssl_sect]
system_default = system_default_sect

[system_default_sect]
MinProtocol = TLSv1.2
CipherString = DEFAULT@SECLEVEL=1
Options = UnsafeLegacyRenegotiation

“Targets may link only to libraries. CMake is dropping the item” message (when building with the Qt chrome on macOS)

When building with the Qt chrome on macOS, you may encounter the following message:

CMake Warning at /opt/homebrew/Cellar/qt/6.7.0_1/lib/cmake/Qt6/FindWrapOpenGL.cmake:48 (target_link_libraries): Target "ladybird" requests linking to directory "/usr/X11R6/lib". Targets may link only to libraries. CMake is dropping the item.

…followed by 14-line stack trace, the top of which is this:

Build/vcpkg/scripts/buildsystems/vcpkg.cmake:859 (_find_package)

…and all of it shown in bright yellow, making you think it must be important and something must need to be fixed. But that’s not the case. Instead, despite that, you’ll be able to build successfully with the Qt chrome.