If "sudo apt install lv2-dev" didn't help...

I've added some verbose logging. Grab the latest from git and try this from your build directory:

cmake --log-level=VERBOSE ..

  You should see the following in the output after it checks for lv2:

-- LV2_FOUND: '1'
-- LV2_INCLUDE_DIRS: '/usr/include'
-- LV2_LIBRARY_DIRS: ''

I'm guessing you are going to see LV2_INCLUDE_DIRS is ''. If so, something might be wrong with your lv2 package configuration.

Ted.

On 1/8/26 2:22 PM, Ted Felix wrote:
  That's really strange because above it indicates that lv2 1.18.10 is indeed available:

-- Checking for module 'lv2>=1.18.0'
--   Found lv2, version 1.18.10

   And your 25.12 builds fine.

   Try this:

sudo apt install lv2-dev

  Not sure it will help.  Let us know how it goes.  I'll keep digging into how this can happen with cmake.

Ted.

On 1/8/26 9:34 AM, Babarosa wrote:
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.



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