Explicitly link against pthreads

CMakeLists.txt

@@ -24,7 +24,7 @@ option(WANT_JACK        "Include JACK (Jack Audio Connection Kit) support" ON)
 option(WANT_LASH        "Include LASH (LASH Audio Session Handler) support" ON)
 option(WANT_DEBUG       "Create debug build" OFF)
 option(WANT_LV2         "Build Lv2 wrapper" ON)
-option(WANT_LV2_GUI	"GUI executable will be used for LV2" ON)
+option(WANT_LV2_GUI     "GUI executable will be used for LV2" ON)
 option(WANT_SORDI       "Use the sordi tool to check Lv2 files" ON)
 option(WANT_EXPERIMENTAL "Enable experimental effects" OFF)
 
@@ -35,6 +35,7 @@ option(WANT_EXPERIMENTAL "Enable experimental effects" OFF)
 SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake" ${CMAKE_MODULE_PATH})
 
 find_package(PkgConfig REQUIRED)
+find_package(Threads REQUIRED)
 find_package(EXPAT REQUIRED)
 
 if(WANT_GUI)

src/CMakeLists.txt

@@ -23,26 +23,26 @@ endif()
 target_include_directories(calf PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 
 target_include_directories(calf PRIVATE ${EXPAT_INCLUDE_DIRS} ${FluidSynth_INCLUDE_DIRS})
-target_link_libraries(calf PUBLIC ${EXPAT_LIBRARIES} fluidsynth)
+target_link_libraries(calf PUBLIC Threads::Threads ${EXPAT_LIBRARIES} fluidsynth)
 
 if(USE_GUI)
     target_include_directories(calf PRIVATE ${GTK_INCLUDE_DIRS})
-    target_link_libraries(calf PRIVATE ${GTK_LIBRARIES})
+    target_link_libraries(calf PRIVATE Threads::Threads ${GTK_LIBRARIES})
 endif()
 
 if(USE_JACK)
     target_include_directories(calf PRIVATE ${JACK_INCLUDE_DIRS})
-    target_link_libraries(calf PRIVATE ${JACK_LIBRARIES})
+    target_link_libraries(calf PRIVATE Threads::Threads ${JACK_LIBRARIES})
 endif()
 
 if(USE_LASH)
     target_include_directories(calf PRIVATE ${LASH_INCLUDE_DIRS})
-    target_link_libraries(calf PRIVATE ${LASH_LIBRARIES})
+    target_link_libraries(calf PRIVATE Threads::Threads ${LASH_LIBRARIES})
 endif()
 
 if(USE_LV2)
     target_include_directories(calf PRIVATE ${LV2_INCLUDE_DIRS})
-    target_link_libraries(calf PRIVATE ${LV2_LIBRARIES})
+    target_link_libraries(calf PRIVATE Threads::Threads ${LV2_LIBRARIES})
 endif()
 
 #
@@ -52,7 +52,7 @@ endif()
 if(USE_GUI)
     add_library(calfgui ctl_curve.cpp ctl_keyboard.cpp ctl_knob.cpp ctl_led.cpp ctl_tube.cpp ctl_vumeter.cpp ctl_frame.cpp ctl_fader.cpp ctl_buttons.cpp ctl_notebook.cpp ctl_meterscale.cpp ctl_combobox.cpp ctl_tuner.cpp ctl_phasegraph.cpp ctl_pattern.cpp gui.cpp gui_config.cpp gui_controls.cpp osctl.cpp plugin_gui_window.cpp preset_gui.cpp utils.cpp ctl_linegraph.cpp drawingutils.cpp)
     target_include_directories(calfgui PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
-    target_link_libraries(calfgui PRIVATE ${GTK_LIBRARIES} fluidsynth)
+    target_link_libraries(calfgui PRIVATE Threads::Threads ${GTK_LIBRARIES} fluidsynth)
 endif()
 
 
@@ -64,7 +64,7 @@ if(USE_LV2 AND USE_GUI)
     if (LINKER_SUPPORTS_NODELETE)
         target_link_options(calflv2gui PRIVATE -Wl,-z,nodelete)
     endif()
-    target_link_libraries(calflv2gui PRIVATE ${GTK_LIBRARIES} ${EXPAT_LIBRARIES} fluidsynth)
+    target_link_libraries(calflv2gui PRIVATE Threads::Threads ${GTK_LIBRARIES} ${EXPAT_LIBRARIES} fluidsynth)
     set_target_properties(calf PROPERTIES
         INSTALL_RPATH "${LV2DIR}"
         BUILD_WITH_INSTALL_RPATH TRUE
@@ -78,7 +78,7 @@ if(USE_GUI AND USE_JACK)
     add_executable(calfjackhost gtk_session_env.cpp host_session.cpp jack_client.cpp jackhost.cpp gtk_main_win.cpp connector.cpp session_mgr.cpp)
 
     target_include_directories(calfjackhost PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
-    target_link_libraries(calfjackhost PRIVATE calfgui calf ${JACK_LIBRARIES} ${GTK_LIBRARIES} fluidsynth)
+    target_link_libraries(calfjackhost PRIVATE Threads::Threads calfgui calf ${JACK_LIBRARIES} ${GTK_LIBRARIES} fluidsynth)
 
     set_target_properties(calfjackhost PROPERTIES
         INSTALL_RPATH "${CMAKE_INSTALL_PREFIX}/lib/${PROJECT_NAME}"
@@ -96,7 +96,7 @@ else()
     add_executable(calfmakerdf makerdf.cpp)
 endif()
 target_include_directories(calfmakerdf PRIVATE ${CMAKE_CURRENT_SOURCE_DIR} ${EXPAT_INCLUDE_DIRS})
-target_link_libraries(calfmakerdf PRIVATE calf ${EXPAT_LIBRARIES} fluidsynth)
+target_link_libraries(calfmakerdf PRIVATE calf Threads::Threads ${EXPAT_LIBRARIES} fluidsynth)
 
 #
 # install