Matreshka's User's Guide


Linux and other POSIX environment

To install Matreshka unpack its source code archive and run

make install

Automatic configuration utility will be build and run to configure Matreshka to meet your machine and operating system.

Windows 64bit

On Windows system you need make, install and a few other commands. The easiest way to get them is to install Make and CoreUtils packages from GnuWin32 port.

Note for Windows 10 users: Windows assumes that "install" should ask for elevated privileges and prevents it to work as expected. To workaround that issue launch the Local Security Policy editor and

  1. Go to Local policies ‣ Security Options
  2. Set User Account Control: Detect application installations and prompt for elevation to disabled

Another option to get make and install - use msys2, MinGW or Cygwin environment.

Install Ada compiler from GNAT Community 2018 Release. Optionally you can install ASIS (from the same release) to enable A2JS translator.

Another option is usage of msys2 compiler distribution. Installation instructions for msys2:

  • Download and install msys2 as described on
  • Install Ada compiler `pacman -S mingw-w64-gcc-ada
  • Now you need to replace unworking *.dll.a with corresponding dll. Do this in msys2 console:
    adalib=$(dirname `gcc -print-libgcc-file-name`)/adalib
    bin_dir=$(dirname `which gcc`)
    rm -f ${adalib}/libgna{t,rl}-*.dll.a
    cp ${bin_dir}/libgna{t,rl}-*.dll ${adalib}/
  • To install gprbuild setup our repository with precompiled packages:
    echo [ci.mingw] >> /etc/pacman.conf
    echo SigLevel = Optional >> /etc/pacman.conf
    echo Server = >> /etc/pacman.conf
  • Install gprbuild-gpl (and asis if you like a2js):
    pacman -S mingw-w64-gprbuild-gpl mingw-w64-asis
  • Continue with make && make install

Windows 32bit

You can use GNAT GPL 2017 Windows compiler. You also need make and install utilities, see Windows 64bit for details.

Mac OS

You may use GNAT GPL 2016 or GCC 8.1 from

On Mac OS system you need "Command Line Tools for XCode" installed. You can install this from Xcode menu > Preferences > Downloads or, alternatively, there are stand-alone installation packages for it.

Advanced installation

Sometimes, it is needed to have more control over configuration and build of Matreshka. One example is use Matreshka on Windows, where detection of non-standard libraries is problematic. Another example is binary packages supporters.

So, build of Matreshka consists from several steps:

  • build of configuration utility;
  • execution of configuration utility;
  • build of package;
  • installation of package.

Build of configuration utility

Configuration utility can be build by using

make config

Execution of configuration utility

Execution of configuration utility in its simplest form looks like:


This is exactly what default make target do, so there is no reasons to use it.

Configuration utility allows to specify several additional parameters all of them are reported by

./configure --help

Below is small example of manual execution of configuration utility to install Matreshka in specified directory and to lookup SQLite's libraries in the specified directory on Windows:

configure.exe --prefix=C:\Matreshka --with-sqlite3-libdir=C:\Matreshka\lib

It is possible to disable build of some Matreshka's modules. For example, to disable AMF module run configuration utility with --disable-amf switch:

./configure --disable-amf

Build of Matreshka

To build Matreshka after manual configuration it is sufficient to run


Several make's variables can be used to adjust build process:

  • SMP_MFLAGS can be used to utilize several CPUs to compile Matreshka;
  • GNAT_OPTFLAGS can be used to pass additional user defined switches for compiler.

Installation of Matreshka

And to install Matreshka:

make install

Install target is used DESTDIR environment variable to adjust root directory, it is very useful for binary packages supporters.

Run test suite

To run test suite execute

make check

This will start tests corresponding to configured settings.

Configuration to run Oracle tests

To start SQL Oracle driver tests you need an account on Oracle database server. Configure SQL*Net name TEST to point to database and set environment variables ORACLE_TEST_USER, ORACLE_TEST_PASSWORD with user's login and password. Here is example:

$ export ORACLE_TEST_PASSWORD=test_pwd
$ export TNS_ADMIN=/home/farm/tns_admin
$ cat /home/farm/tns_admin/tnsnames.ora
   (ADDRESS = (PROTOCOL = TCP)(HOST = = 1521))

Configuration to run MySQL tests

Tests of MySQL driver needs to establish connection to MySQL server. 'test' database must be created and accessible to read/write by current user before run of Matreshka configuration utility. Configuration utility do some checks using mysql command line client to detect whether MySQL server is accessible. Note, MySQL tests are disabled when these checks fail.

Debugging of appications

Matreshka provides GDB plugin to pretty printing of provided data types: you will see textual representation of actual data instead of content of internal data structures.

Setup of plugin for GDB

You need to copy gdb/python/ file to somewhere in you file tree and add line to load this file into .gdbinit file:

source <path>/

Next time you run GDB it will load plugin to pretty print Matreshka's data types. Note, due to GDB architecture this works only on objects of Matreshka's datatypes, not on user defined record or array types. Thus, if you debugging following code:

   type Person is record
      Name : League.Strings.Universal_String;
   end record;

   Obj : Person;

the only way to print value of Obj.Name is to use

print Obj.Name
Last modified 3 years ago Last modified on Oct 31, 2018, 11:45:25 AM
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