Hi there!

The use of lv2 is disabled because of

"Failed to find lv2 headers for lv2 plugins"

I searched and did not find out where to get these headers from ...

Greetings, Michael

Am 08.01.26 um 04:51 schrieb Ted Felix:


On 1/7/26 5:05 PM, Babarosa wrote:
Hi there!

Thank you for your quick answer.

1.)

I built v25.12 again and everything works as expected. 
babarosa@MacBookPro:~/rosegarden-/build$ cmake ..
-- The C compiler identification is GNU 12.2.0
-- The CXX compiler identification is GNU 12.2.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.1") 
-- Checking for module 'alsa>=0.9'
--   Found alsa, version 1.2.8
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.13") 
-- Checking for module 'liblo>=0.7'
--   Found liblo, version 0.31
-- Checking for module 'lrdf>=0.2'
--   Found lrdf, version 0.5.0
-- Checking for module 'fftw3f>=3.0.0'
--   Found fftw3f, version 3.3.10
-- Checking for module 'samplerate>=0.1.2'
--   Found samplerate, version 0.2.2
-- Checking for module 'sndfile>=1.0.16'
--   Found sndfile, version 1.2.0
-- Checking for module 'jack'
--   Found jack, version 1.9.21
-- Checking for module 'lilv-0'
--   Found lilv-0, version 0.24.14
-- Checking for module 'lv2>=1.18.0'
--   Found lv2, version 1.18.10
CMake Warning at CMakeLists.txt:230 (message):
  Failed to find lv2 headers for lv2 plugins


-- The following features have been enabled:

 * ALSA, Alsa library (Advanced Linux Sound Architecture), used for MIDI support
 * SNDFILE, Better support for WAV files
 * JACK, Library for accessing the JACK server (http://jackaudio.org).
 * LIRCCLIENT, The LIRC client library, for remote control support

-- The following REQUIRED packages have been found:

 * PkgConfig
 * Qt5Core
 * Qt5Gui
 * Qt5Widgets
 * Qt5Xml
 * Qt5Network
 * Qt5PrintSupport
 * Qt5Test
 * Qt5 (required version >= 5.1.0)
 * ZLIB

-- The following features have been disabled:

 * LILV, The Lilv library, for lv2 plugins

-- Not building unit tests, using a static library for rosegarden
-- Found GTK2_GTK: /usr/lib/x86_64-linux-gnu/libgtk-x11-2.0.so  
-- Found SharedMimeInfo: /usr/bin/update-mime-database (found suitable version 
"2.2", minimum required is "0.50") 
-- Configuring done
-- Generating done
-- Build files have been written to: /home/babarosa/rosegarden-/build
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