Modenise CMake C++

i_sndfile/CMakeLists.txt

-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 3.13)
 project(i_sndfile)
 
 
 find_path(SNDFILE_INCLUDE_DIR sndfile.h)
 find_library(SNDFILE_LIBRARIES NAMES sndfile)
 
-find_package(blc_channel REQUIRED)
-find_package(blc_program REQUIRED)
+find_package(blc REQUIRED)
 
-add_definitions(${BL_DEFINITIONS})
-include_directories(${BL_INCLUDE_DIRS} ${SNDFILE_INCLUDE_DIR})
 add_executable(i_sndfile i_sndfile.cpp)
-target_link_libraries(i_sndfile ${BL_LIBRARIES} ${SNDFILE_LIBRARIES})
+target_link_libraries(i_sndfile PRIVATE blc ${SNDFILE_LIBRARIES} rt)

i_sndfile/i_sndfile.cpp

 #include <sndfile.h>
-
+#include "blc_text.h"
 #include "blc_channel.h"
 #include "blc_program.h"
 #include <unistd.h> //getpid
@@ -7,7 +7,6 @@
 #define DEFAULT_OUTPUT_NAME ":sound<pid>" //':'
 
 int main(int argc, char**argv){
-    blc_channel output;
     char const *filename, *iterations_nb_str, *length_str, *output_name, *period_str, *samplerate_str, *seek_pos_str, *type_str;
     int iterations_nb, period, samplerate;
     size_t length;
@@ -45,7 +44,7 @@ int main(int argc, char**argv){
 
     if (strcmp(DEFAULT_OUTPUT_NAME, output_name)==0) asprintf((char**)&output_name, ":sound%d", getpid());
 
-    output.create_or_open(output_name, BLC_CHANNEL_WRITE, type, 'LPCM', 1, length);
+    blc_channel output(output_name, BLC_CHANNEL_WRITE, type, 'LPCM', { length });
     output.publish();
 
     CLEAR(sfinfo);

o_sndfile/CMakeLists.txt

-cmake_minimum_required(VERSION 2.6)
+cmake_minimum_required(VERSION 3.13)
 project(o_sndfile)
 
 
 find_path(SNDFILE_INCLUDE_DIR sndfile.h)
 find_library(SNDFILE_LIBRARIES NAMES sndfile)
 
-find_package(blc_channel REQUIRED)
-find_package(blc_program REQUIRED)
+find_package(blc REQUIRED)
 
-add_definitions(${BL_DEFINITIONS})
-include_directories(${BL_INCLUDE_DIRS} ${SNDFILE_INCLUDE_DIR})
 add_executable(o_sndfile o_sndfile.cpp)
-target_link_libraries(o_sndfile ${BL_LIBRARIES} ${SNDFILE_LIBRARIES})
+target_link_libraries(o_sndfile PRIVATE blc ${SNDFILE_LIBRARIES} rt)

o_sndfile/o_sndfile.cpp

 #include <sndfile.h>
-
+#include "blc_text.h"
 #include "blc_channel.h"
 #include "blc_program.h"
 #include <unistd.h> //getpid