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Welcome to MyFirstUDRKit. As you can tell from the name, this plugin is not intended for production use. It is just to play with. When you are ready feel free to fork it and give it a new name.

Forking the repository

For test purposes you can just clone the repo and try building and testing the code. However, for serious work it is recommended that you clone the repo and give the project a new name. When doing so be sure to search and replace all references to MyFirstUDRKit to your new project name. There are two strings to replace:


Setting up cmake

Run the cmake gui and fill in the path information. Set the source to the root of the location where you have cloned the repo. CMake looks for the file CMakeLists.txt. Binaries will be built under build/x86_64-win64 and build/x86_64-linux for linux.

cmake - pre-config

Click on Configure to generate the default config for the current platform. When prompted choose the Unix makefiles generator for linux. Under Windows choose and Visual Studio 15 2017 and be sure to for windows. (In general it is preferable to use the same compiler as the version of Firebird. Otherwise it may be necessary to ship additional run-time libraries.)

cmake - windows generator

You should then see a screen like this:

cmake - config

The only change needed at this stage is to set CMAKE_BUILD_TYPE to Debug`

You can then click on Generate and you should end up with a screen similar to this:

cmake - config

If you want to start again be sure to click on FILE|DELETE CACHE

Building the kit

cd build/x86_64-linux


run the sql on the target database

Decide whether to install the functions globally or as part of a package


  • create a test db
  • add functions
  • write some simple tests

Stress testing

  • compile fb for valgrind
  • stress test for leakage

When things go wrong

Errors when registering a function

Invalid index 1 in function IMetadataBuilder::setType

This error indicates that the parameters in the sql function declaration do not match the parameters in the actual function. Check your sql with the FB_UDR_MESSAGE declarations.