I have a virtual machine with debian.
"lsb_release -a" says it's bookworm.

On that machine the /usr/include/lv2/lv2plug.in/ns/extensions/ui is a
symbolic link installed by the lv2_dev package.
Rosegarden checks for the lv2_dev package by checking for the include
file lv2/urid/urid.h.

Can you check that lv2_dev is installed ?
Maybe uninstall and reinstall it ?

  Philip


On 07/02/2025 07:19, david wrote:
OK, I got that one resolved by installing this GTK2 dev library:
libgtk2.0-dev

That pulled in 28 other gtk2*-dev packages.

I used git clone to grab the 24.12.1 source this time, but the error
message about "lv2/lv2plug.in/ns/extensions/ui/ui.h" still remains.

I just now tried building using the 24.12 release source that worked
fine earlier. Now it fails with the same message.

Ideas?

On 2/6/25 19:49, david wrote:
There was also this message when running cmake:
Some or all of the gtk libraries were not found. (missing:
GTK2_GTK_LIBRARY GTK2_GTK_INCLUDE_DIR GTK2_GDK_INCLUDE_DIR
GTK2_GDKCONFIG_INCLUDE_DIR GTK2_GDK_LIBRARY)

I don't know what needs to be installed to get those libraries. Ideas?

On 2/6/25 18:50, david wrote:
On my desktop, I found that file here:

/usr/include/lv2/ui/ui.h

and:

/usr/lib/lv2/ui.lv2/ui.h

According to diff, they're identical.

I couldn't find any trace of it in the Rosegarden sources. Is it
supposed to be there? Is there a -dev package that I need to help it
be found?

Maybe I should just trash the 24.12.1 tarball I downloaded and try
again?

On 2/6/25 00:02, Philip Leishman via Rosegarden-user wrote:

Hi David,

This is a very strange error. The file which gives the error has not
changed from 24.12 to 24.12.1 !
The file "/usr/include/lv2/lv2plug.in/ns/extensions/ui/ui.h" should
exist and be a copy of "/usr/include/lv2/ui/ui.h"
Can you check for the existence of these files.

  Philip

On 06/02/2025 08:11, david wrote:
Ted, thanks.

I'm running Debian Bookworm on my old laptop and the new desktop I'm
setting up.

It compiled properly on the laptop, but gave me this error message on
the new desktop:
In file included from
/home/software/Audio/Rosegarden/rosegarden-24.12.1/build/src/rosegardenprivate_autogen/CJKKGESP6Q/../../../../src/gui/studio/AudioPluginLV2GUIWindow.h:30,

                 from
/home/software/Audio/Rosegarden/rosegarden-24.12.1/build/src/rosegardenprivate_autogen/CJKKGESP6Q/moc_AudioPluginLV2GUIWindow.cpp:10,

                 from
/home/software/Audio/Rosegarden/rosegarden-24.12.1/build/src/rosegardenprivate_autogen/mocs_compilation.cpp:205:

/home/software/Audio/Rosegarden/rosegarden-24.12.1/build/src/rosegardenprivate_autogen/CJKKGESP6Q/../../../../src/gui/studio/lv2_external_ui.h:21:10:

fatal error: lv2/lv2plug.in/ns/extensions/ui/ui.h: No such file or
directory
   21 | #include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.

RG24.12 compiled and runs fine on the new desktop.

What am I missing on the new system - ideas?

On 2/5/25 19:47, Ted Felix wrote:
  For those of you who stick to the stable releases, this one has
three crashes fixed.  If you follow along with git, you've already
got this.

====== ROSEGARDEN 24.12.1 RELEASED ======

The Rosegarden team is proud to announce the release of version
24.12.1
of Rosegarden, a MIDI sequencer that features a rich
understanding of
music notation along with basic support for digital audio.

  http://www.rosegardenmusic.com/

Included in this release...

===== Bug Fixes =====

  * Fixed a crash when closing the Manage MIDI Devices window.
Debian
    Bug #1091859. [544fbeea]
  * Fixed a crash when creating a new document (File > New) while
the
    bank editor is up.  Bug #1712.  [77cd257d]
  * Fixed a crash when deleting a repeating segment that is being
    edited in notation.  Bug #1711.  [edff1c0a]

Ted.







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