--- src/CMakeLists.txt.orig	2026-05-23 14:59:55 UTC
+++ src/CMakeLists.txt
@@ -27,6 +27,18 @@ set(PROJECT_INCLUDE_DIR ${PROJECT_BINARY_DIR}/include)
 
 # The path to the project global include directory
 set(PROJECT_INCLUDE_DIR ${PROJECT_BINARY_DIR}/include)
+# Set up include directories
+include_directories(
+  ${PROJECT_INCLUDE_DIR}
+  ${CMAKE_BINARY_DIR}
+if(QT_ONLY)
+  ${CMAKE_SOURCE_DIR}/echolib
+  ${CMAKE_SOURCE_DIR}/async/audio
+  ${CMAKE_SOURCE_DIR}/async/core
+  ${CMAKE_SOURCE_DIR}/async/cpp
+  ${INCLUDE_INSTALL_DIR}/svxlink/svxlink
+endif(QT_ONLY)
+)
 
 # Where to put library files
 set(CMAKE_LIBRARY_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}/lib)
@@ -43,6 +55,7 @@ list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cma
 list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake/Modules/")
 
 # Optional parts
+option(QT_ONLY "Only Build Qt applications and libs" OFF)
 option(USE_QT "Build Qt applications and libs" ON)
 option(BUILD_STATIC_LIBS "Build static libraries in addition to dynamic" OFF)
 
@@ -52,12 +65,6 @@ add_definitions(-DINTERNAL_SAMPLE_RATE=${INTERNAL_SAMP
 endif(NOT DEFINED INTERNAL_SAMPLE_RATE)
 add_definitions(-DINTERNAL_SAMPLE_RATE=${INTERNAL_SAMPLE_RATE})
 
-# Set up include directories
-include_directories(
-  ${PROJECT_INCLUDE_DIR}
-  ${CMAKE_BINARY_DIR}
-)
-
 # Warnings should be enabled for GCC. Also turning off the NDEBUG flag
 # since that remove asserts.
 if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
@@ -85,7 +92,6 @@ endif(NOT CMAKE_BUILD_TYPE)
       FORCE)
 endif(NOT CMAKE_BUILD_TYPE)
 
-
 ##############################################################################
 # Install targets properties setup
 ##############################################################################
@@ -99,6 +105,18 @@ endif(NOT DEFINED INCLUDE_INSTALL_DIR)
   set(INCLUDE_INSTALL_DIR ${CMAKE_INSTALL_FULL_INCLUDEDIR})
 endif(NOT DEFINED INCLUDE_INSTALL_DIR)
 
+# Set up include directories
+include_directories(
+  ${PROJECT_INCLUDE_DIR}
+  ${CMAKE_BINARY_DIR}
+if(QT_ONLY)
+  ${CMAKE_SOURCE_DIR}/echolib
+  ${CMAKE_SOURCE_DIR}/async/audio
+  ${CMAKE_SOURCE_DIR}/async/core
+  ${INCLUDE_INSTALL_DIR}/svxlink/svxlink
+endif(QT_ONLY)
+)
+
 # Where to install libraries
 if(NOT DEFINED LIB_INSTALL_DIR)
   #set(LIB_INSTALL_DIR ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX})
@@ -297,11 +315,11 @@ configure_file(${CMAKE_SOURCE_DIR}/config.h.in
   )
 
 # Find the Sigc++ library
-find_package(SIGC REQUIRED)
-include_directories(${SIGC_INCLUDE_DIRS})
-add_definitions(${SIGC_DEFINITIONS})
+find_package(SIGC2 REQUIRED)
+include_directories(${SIGC2_INCLUDE_DIRS})
+add_definitions(${SIGC2_DEFINITIONS})
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SIGC_CXX_FLAGS}")
-set(LIBS ${LIBS} ${SIGC_LIBRARIES})
+set(LIBS ${LIBS} ${SIGC2_LIBRARIES})
 
 find_package(LADSPA)
 if(LADSPA_FOUND)
@@ -331,9 +349,11 @@ add_subdirectory(misc)
 add_subdirectory(doc)
 add_subdirectory(async)
 add_subdirectory(misc)
+if(NOT QT_ONLY)
 add_subdirectory(echolib)
 add_subdirectory(locationinfo)
 add_subdirectory(svxlink)
+endif(NOT QT_ONLY)
 if(USE_QT)
   add_subdirectory(qtel)
 endif(USE_QT)