Fix: failing unit tests in partial mrpt builds

Author: jlblancoc

doc/source/doxygen-docs/changelog.md

@@ -1,7 +1,9 @@
 \page changelog Change Log
 
 # Version 2.15.1: UNRELEASED
-(NONE)
+- Bug fixes:
+  - FIX: Avoid throw when viewing and describing as text a PCD with an empty field.
+  - Avoid cmake errors when disabling libraries required by some unit tests.
 
 # Version 2.15.0: Released Oct 26th, 2025
 - Changes in apps:

tests/CMakeLists.txt

@@ -101,20 +101,30 @@ foreach(_TSTLIB ${LST_LIB_TESTS})
 	# "error adding symbols: DSO missing from command line"
 	set(lst_deps ${_TSTLIB_DASH} ${lst_deps})
 	set(link_libs "") # Prepare a list so we can smoothly handle list of libs with "debug", "optimized", etc.
+	set(missing_deps 0)
 	foreach(_DEPLIB ${lst_deps})
 		# Include dirs:
 		if (_DEPLIB MATCHES "^mrpt-?:*(.*)")
 			string(REGEX REPLACE "mrpt-?:*(.*)" "\\1" _DEPLIB_DASH ${_DEPLIB})
 			# This link command automatically imports all required "include directories"
 			# and other PUBLIC dependencies of the linked target:
-			list(APPEND link_libs mrpt::${_DEPLIB_DASH})
+			if (TARGET mrpt::${_DEPLIB_DASH})
+				list(APPEND link_libs mrpt::${_DEPLIB_DASH})
+			else()
+				set(missing_deps 1)
+			endif()
 		else()
 			list(APPEND link_libs ${_DEPLIB})
 		endif()
 	endforeach()
 	target_link_libraries(test_${_TSTLIB} ${link_libs})
 	unset(link_libs)
 
+	if (missing_deps)
+		message(STATUS "Skipping tests for ${_TSTLIB} due to disabled building dependencies")
+		continue()
+	endif()
+
 	# Run it:
 	set(GENERATED_EXE "$<TARGET_FILE:test_${_TSTLIB}>")
 	# If we are in Emscripten (wasm JavaScript code), run with the node.js interpreter: