[ 14%] Building CXX object CMakeFiles/drumrox.dir/drumrox.cpp.o
cc1plus: warning: command-line option ‘-std=gnu99’ is valid for C/ObjC but not for C++
In file included from /home/user/opt/drumrox/drumrox.cpp:22:
/home/user/opt/drumrox/drumrox.h:23:10: fatal error: lv2/lv2plug.in/ns/ext/atom/forge.h: File o directory non esistente
23 | #include "lv2/lv2plug.in/ns/ext/atom/forge.h"
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
make[2]: *** [CMakeFiles/drumrox.dir/build.make:76: CMakeFiles/drumrox.dir/drumrox.cpp.o] Errore 1
make[1]: *** [CMakeFiles/Makefile2:87: CMakeFiles/drumrox.dir/all] Errore 2
make: *** [Makefile:136: all] Errore 2
I'm on Debian sid and I have lv2-dev package installed.