Fix MSVC linking for assimp and fcl (#1510)

Co-authored-by: Jeongseok Lee <jslee02@users.noreply.github.com>

cmake/Findassimp.cmake

@@ -26,15 +26,20 @@ find_path(ASSIMP_INCLUDE_DIRS assimp/scene.h
 
 # Libraries
 if(MSVC)
-  set(ASSIMP_LIBRARIES "assimp$<$<CONFIG:Debug>:d>")
+  find_package(assimp QUIET CONFIG)
+  if(TARGET assimp::assimp)
+    set(ASSIMP_LIBRARIES "assimp::assimp")
+  endif()
 else()
   find_library(ASSIMP_LIBRARIES
       NAMES assimp
       HINTS ${PC_ASSIMP_LIBDIR})
 endif()
 
 # Version
-set(ASSIMP_VERSION ${PC_ASSIMP_VERSION})
+if(PC_ASSIMP_VERSION)
+  set(ASSIMP_VERSION ${PC_ASSIMP_VERSION})
+endif()
 
 # Set (NAME)_FOUND if all the variables and the version are satisfied.
 include(FindPackageHandleStandardArgs)

cmake/Findfcl.cmake

@@ -28,7 +28,10 @@ find_path(FCL_INCLUDE_DIRS
 
 # Libraries
 if(MSVC)
-  set(FCL_LIBRARIES "fcl$<$<CONFIG:Debug>:d>")
+  find_package(fcl QUIET CONFIG)
+  if(TARGET fcl)
+    set(FCL_LIBRARIES fcl)
+  endif()
 else()
   # Give explicit precedence to ${PC_FCL_LIBDIR}
   find_library(FCL_LIBRARIES
@@ -44,7 +47,9 @@ else()
 endif()
 
 # Version
-set(FCL_VERSION ${PC_FCL_VERSION})
+if(PC_FCL_VERSION)
+  set(FCL_VERSION ${PC_FCL_VERSION})
+endif()
 
 # Set (NAME)_FOUND if all the variables and the version are satisfied.
 include(FindPackageHandleStandardArgs)