MuonSTGC_CnvTools: cmake fixes

This package has a component library, but it also exports headers.
Define an interface library for the headers.

Library dependency fixes.

MuonSpectrometer/MuonCnv/MuonSTGC_CnvTools/CMakeLists.txt

@@ -29,14 +29,19 @@ atlas_depends_on_subdirs( PUBLIC
 find_package( Eigen )
 find_package( tdaq-common COMPONENTS eformat_write DataWriter )
 
+atlas_add_library( MuonSTGC_CnvToolsLib
+                   MuonSTGC_CnvTools/*.h
+                   INTERFACE
+                   PUBLIC_HEADERS MuonSTGC_CnvTools
+                   LINK_LIBRARIES GaudiKernel )
+
 # Component(s) in the package:
 atlas_add_component( MuonSTGC_CnvTools
                      src/*.cxx
                      src/components/*.cxx
                      INCLUDE_DIRS ${TDAQ-COMMON_INCLUDE_DIRS} ${EIGEN_INCLUDE_DIRS}
-                     LINK_LIBRARIES ${TDAQ-COMMON_LIBRARIES} ${EIGEN_LIBRARIES} ByteStreamCnvSvcBaseLib ByteStreamData ByteStreamData_test GaudiKernel AthenaBaseComps Identifier EventPrimitives TGCcablingInterfaceLib MuonReadoutGeometry MuonDigitContainer MuonIdHelpersLib MuonRDO MuonPrepRawData MuonTrigCoinData TrkSurfaces STgcClusterizationLib )
+                     LINK_LIBRARIES ${TDAQ-COMMON_LIBRARIES} ${EIGEN_LIBRARIES} ByteStreamCnvSvcBaseLib ByteStreamData ByteStreamData_test GaudiKernel AthenaBaseComps Identifier EventPrimitives TGCcablingInterfaceLib MuonReadoutGeometry MuonDigitContainer MuonIdHelpersLib MuonRDO MuonPrepRawData MuonTrigCoinData TrkSurfaces STgcClusterizationLib MuonCnvToolInterfacesLib MuonSTGC_CnvToolsLib )
 
 # Install files from the package:
-atlas_install_headers( MuonSTGC_CnvTools )
 atlas_install_joboptions( share/*.py )