[CMake] Correctly specify names of XRootD's build products.

The names of the build byproducts need to be specified with full paths
for Ninja.

Fix #19333

Author: hageboeck

builtins/xrootd/CMakeLists.txt

@@ -11,6 +11,13 @@ set(XROOTD_PREFIX ${CMAKE_BINARY_DIR}/XROOTD-prefix)
 
 message(STATUS "Downloading and building XROOTD version ${XROOTD_VERSION}")
 
+set(XROOTD_INCLUDE_DIRS ${XROOTD_PREFIX}/include/xrootd CACHE INTERNAL "" FORCE)
+set(XRDCL_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}XrdCl${CMAKE_SHARED_LIBRARY_SUFFIX})
+set(XRDUTILS_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}XrdUtils${CMAKE_SHARED_LIBRARY_SUFFIX})
+set(XROOTD_CLIENT_LIBRARIES ${XROOTD_PREFIX}/lib/${XRDCL_NAME} CACHE INTERNAL "" FORCE)
+set(XROOTD_UTILS_LIBRARIES ${XROOTD_PREFIX}/lib/${XRDUTILS_NAME} CACHE INTERNAL "" FORCE)
+set(XROOTD_LIBRARIES ${XROOTD_PREFIX}/lib/${XRDCL_NAME} CACHE INTERNAL "" FORCE)
+
 ExternalProject_Add(
     BUILTIN_XROOTD
     URL http://lcgpackages.web.cern.ch/lcgpackages/tarFiles/sources/xrootd-${XROOTD_VERSION}.tar.gz
@@ -34,7 +41,7 @@ ExternalProject_Add(
                -DOPENSSL_ROOT=${OPENSSL_ROOT}
     INSTALL_COMMAND ${CMAKE_COMMAND} --build . --target install
     LOG_DOWNLOAD 1 LOG_CONFIGURE 1 LOG_BUILD 1 LOG_INSTALL 1 LOG_OUTPUT_ON_FAILURE 1
-    BUILD_BYPRODUCTS XrdUtils XrdCl
+    BUILD_BYPRODUCTS ${XROOTD_UTILS_LIBRARIES} ${XROOTD_CLIENT_LIBRARIES}
     TIMEOUT 600
 )
 
@@ -45,13 +52,6 @@ if(builtin_openssl)
   add_dependencies(BUILTIN_XROOTD OPENSSL)
 endif()
 
-set(XROOTD_INCLUDE_DIRS ${XROOTD_PREFIX}/include/xrootd CACHE INTERNAL "" FORCE)
-set(XRDCL_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}XrdCl${CMAKE_SHARED_LIBRARY_SUFFIX})
-set(XRDUTILS_NAME ${CMAKE_SHARED_LIBRARY_PREFIX}XrdUtils${CMAKE_SHARED_LIBRARY_SUFFIX})
-set(XROOTD_CLIENT_LIBRARIES ${XROOTD_PREFIX}/lib/${XRDCL_NAME} CACHE INTERNAL "" FORCE)
-set(XROOTD_UTILS_LIBRARIES ${XROOTD_PREFIX}/lib/${XRDUTILS_NAME} CACHE INTERNAL "" FORCE)
-set(XROOTD_LIBRARIES ${XROOTD_PREFIX}/lib/${XRDCL_NAME} CACHE INTERNAL "" FORCE)
-
 install(DIRECTORY ${XROOTD_PREFIX}/lib/ DESTINATION ${CMAKE_INSTALL_LIBDIR} COMPONENT libraries FILES_MATCHING PATTERN "libXrd*")
 install(DIRECTORY ${XROOTD_PREFIX}/include/xrootd/ DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/xrootd COMPONENT headers)
 set(CMAKE_BUILD_RPATH ${CMAKE_BUILD_RPATH} ${XROOTD_PREFIX}/lib PARENT_SCOPE)