BUILD(cmake): Use EXCLUDE_FROM_ALL for 3rdparty subdirs

This prevents adding all targets in said subdirectories to the ALL
target by default. Instead, only those targets that are explicitly
referenced (e.g. via target_link_libraries) are built.

This also has the side-effect that any install-directives in these
subdirectories are also ignored for the default install targets which
prevents these libraries of unconditionally installing themselves when
issuing a make install. Instead, we now have to make any 3rdparty
component that we do indeed want to install, do so explicitly (e.g. via
install_library()).

3 files changed, 8 insertions, 8 deletions

diff --git a/overlay_gl/CMakeLists.txt b/overlay_gl/CMakeLists.txt
index 4b20759c2..4a0a2dc67 100644
--- a/overlay_gl/CMakeLists.txt
+++ b/overlay_gl/CMakeLists.txt
@@ -101,7 +101,7 @@ if(NOT APPLE)
 		endif()
 	endif()
 else()
-	add_subdirectory("${3RDPARTY_DIR}/mach-override-build" "${CMAKE_CURRENT_BINARY_DIR}/mach-override")
+	add_subdirectory("${3RDPARTY_DIR}/mach-override-build" "${CMAKE_CURRENT_BINARY_DIR}/mach-override" EXCLUDE_FROM_ALL)
 
 	find_library(LIB_COREFOUNDATION "CoreFoundation")
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index afc09be06..e73133483 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -205,7 +205,7 @@ set(TRACY_ON_DEMAND ON CACHE BOOL "" FORCE)
 # (can cause issues for packagers as that dependency is retained even though Tracy is disabled)
 set(PREV_BUILD_SHARED_LIBS ${BUILD_SHARED_LIBS})
 set(BUILD_SHARED_LIBS OFF CACHE BOOL "" FORCE)
-add_subdirectory("${3RDPARTY_DIR}/tracy" "tracy")
+add_subdirectory("${3RDPARTY_DIR}/tracy" "tracy" EXCLUDE_FROM_ALL)
 disable_warnings_for_all_targets_in("${3RDPARTY_DIR}/tracy")
 message(STATUS "Tracy: ${TRACY_ENABLE}")
 
@@ -216,7 +216,7 @@ target_link_libraries(shared PUBLIC Tracy::TracyClient)
 
 # Add the GSL
 if(bundled-gsl)
-	add_subdirectory("${3RDPARTY_DIR}/gsl" "${CMAKE_CURRENT_BINARY_DIR}/gsl")
+	add_subdirectory("${3RDPARTY_DIR}/gsl" "${CMAKE_CURRENT_BINARY_DIR}/gsl" EXCLUDE_FROM_ALL)
 
 	target_link_libraries(shared PUBLIC GSL)
 else()
diff --git a/src/mumble/CMakeLists.txt b/src/mumble/CMakeLists.txt
index abe2820d0..585f09f47 100644
--- a/src/mumble/CMakeLists.txt
+++ b/src/mumble/CMakeLists.txt
@@ -506,7 +506,7 @@ endif()
 if(bundled-json)
 	set(JSON_BuildTests OFF CACHE INTERNAL "")
 	set(JSON_ImplicitConversions OFF CACHE INTERNAL "")
-	add_subdirectory("${3RDPARTY_DIR}/nlohmann_json/" "${CMAKE_CURRENT_BINARY_DIR}/nlohmann_json/")
+	add_subdirectory("${3RDPARTY_DIR}/nlohmann_json/" "${CMAKE_CURRENT_BINARY_DIR}/nlohmann_json/" EXCLUDE_FROM_ALL)
 else()
 	find_pkg("nlohmann_json" REQUIRED)
 endif()
@@ -596,7 +596,7 @@ if(WIN32)
 		target_link_libraries(mumble_client_object_lib PUBLIC Qt5::QWindowsIntegrationPlugin)
 	endif()
 
-	add_subdirectory("${3RDPARTY_DIR}/xinputcheck-build" "${CMAKE_CURRENT_BINARY_DIR}/xinputcheck")
+	add_subdirectory("${3RDPARTY_DIR}/xinputcheck-build" "${CMAKE_CURRENT_BINARY_DIR}/xinputcheck" EXCLUDE_FROM_ALL)
 
 	# Disable all warnings that the xinputcheck code may emit
 	disable_warnings_for_all_targets_in("${3RDPARTY_DIR}/xinputcheck-build")
@@ -698,7 +698,7 @@ if(bundled-opus)
 		option(OPUS_STACK_PROTECTOR "" OFF)
 	endif()
 
-	add_subdirectory("${3RDPARTY_DIR}/opus" "${CMAKE_CURRENT_BINARY_DIR}/opus")
+	add_subdirectory("${3RDPARTY_DIR}/opus" "${CMAKE_CURRENT_BINARY_DIR}/opus" EXCLUDE_FROM_ALL)
 
 	# Disable all warnings that the Opus code may emit
 	disable_warnings_for_all_targets_in("${3RDPARTY_DIR}/opus")
@@ -725,7 +725,7 @@ else()
 endif()
 
 if(bundled-speex)
-	add_subdirectory("${3RDPARTY_DIR}/speexdsp-build" "${CMAKE_CURRENT_BINARY_DIR}/speexdsp")
+	add_subdirectory("${3RDPARTY_DIR}/speexdsp-build" "${CMAKE_CURRENT_BINARY_DIR}/speexdsp" EXCLUDE_FROM_ALL)
 
 	# Disable all warnings that the speexdsp code may emit
 	disable_warnings_for_all_targets_in("${3RDPARTY_DIR}/speexdsp-build")
@@ -754,7 +754,7 @@ if(rnnoise)
 	target_compile_definitions(mumble_client_object_lib PRIVATE "USE_RNNOISE")
 
 	if(bundled-rnnoise)
-		add_subdirectory("${3RDPARTY_DIR}/rnnoise-build" "${CMAKE_CURRENT_BINARY_DIR}/rnnoise")
+		add_subdirectory("${3RDPARTY_DIR}/rnnoise-build" "${CMAKE_CURRENT_BINARY_DIR}/rnnoise" EXCLUDE_FROM_ALL)
 
 		# Disable all warnings that the RNNoise code may emit
 		disable_warnings_for_all_targets_in("${3RDPARTY_DIR}/rnnoise-build")