ladybird/Documentation/Troubleshooting.md

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CMake fails to configure the build because it's outdated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GCC is missing or is outdated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