Remove code related to the gfal option

The `gfal` option was deprecated in ROOT 6.28 and removed in 6.30
(see 3be3aad). This commit suggests to remove remaining code related to
the `gfal` option.

.github/workflows/root-ci-config/buildconfig/global.txt

@@ -54,7 +54,6 @@ fftw3=ON
 fitsio=ON
 fortran=OFF
 gdml=ON
-gfal=OFF
 gminimal=OFF
 gnuinstall=OFF
 gsl_shared=OFF

.github/workflows/root-ci-config/buildconfig/windows10.txt

@@ -18,7 +18,6 @@ builtin_zstd=ON
 cudnn=OFF
 davix=OFF
 fftw3=OFF
-gfal=OFF
 llvm13_broken_tests=OFF
 minuit2_mpi=OFF
 minuit2_omp=OFF

cmake/modules/RootConfiguration.cmake

@@ -215,11 +215,6 @@ set(glewlibdir ${GLEW_LIBRARY_DIR})
 set(glewlibs ${GLEW_LIBRARIES})
 set(glewincdir ${GLEW_INCLUDE_DIR})
 
-set(buildgfal ${value${gfal}})
-set(gfallibdir ${GFAL_LIBRARY_DIR})
-set(gfallib ${GFAL_LIBRARY})
-set(gfalincdir ${GFAL_INCLUDE_DIR})
-
 set(buildarrow ${value${arrow}})
 set(arrowlibdir ${ARROW_LIBRARY_DIR})
 set(arrowlib ${ARROW_LIBRARY})

cmake/modules/SearchInstalledSoftware.cmake

@@ -1021,22 +1021,6 @@ if(arrow)
 
 endif()
 
-#---Check for gfal-------------------------------------------------------------------
-if(gfal)
-  find_package(GFAL)
-  if(NOT GFAL_FOUND)
-    if(fail-on-missing)
-      message(FATAL_ERROR "Gfal library not found and is required (gfal option enabled)")
-    else()
-      message(STATUS "GFAL library not found. Set variable GFAL_DIR to point to your gfal installation
-                      and the variable SRM_IFCE_DIR to the srm_ifce installation")
-      message(STATUS "For the time being switching OFF 'gfal' option")
-      set(gfal OFF CACHE BOOL "Disabled because GFAL not found (${gfal_description})" FORCE)
-    endif()
-  endif()
-endif()
-
-
 #---Check for dCache-------------------------------------------------------------------
 if(dcache)
   find_package(DCAP)

config/Makefile.in

@@ -196,10 +196,6 @@ ifeq ($(BUILDGLEW), yes)
 GLEWCPPFLAGS   := -DBUILTIN_GLEW
 endif
 
-BUILDGFAL      := @buildgfal@
-GFALLIBDIR     := @gfallibdir@
-GFALCLILIB     := @gfallib@
-GFALINCDIR     := $(filter-out /usr/include, @gfalincdir@)
 SRMIFCEINCDIR  := $(filter-out /usr/include, @srmifceincdir@)
 GLIB2INCDIR    := $(filter-out /usr/include, @glib2incdir@)
 

config/rootrc.in

@@ -489,7 +489,7 @@ TS3WebFile.Root.MultiRangeServer:  Huawei OBS
 # In case the file namespace descriptor ends with - the namespace
 # is not a part of the filename.
 # Extend in private .rootrc with a +Url.Special line.
-Url.Special:         file: hpss: gfal: dcache:
+Url.Special:         file: hpss: dcache:
 +Url.Special:        /alien/-
 
 # PROOF XRD client variables

documentation/doxygen/makeinput.sh

@@ -48,7 +48,6 @@ echo "        ../../hist/                      \\" >> Doxyfile_INPUT
 echo "        ../../html/                      \\" >> Doxyfile_INPUT
 echo "        ../../io/doc/TFile               \\" >> Doxyfile_INPUT
 echo "        ../../io/dcache/                 \\" >> Doxyfile_INPUT
-echo "        ../../io/gfal/                   \\" >> Doxyfile_INPUT
 echo "        ../../io/io/                     \\" >> Doxyfile_INPUT
 echo "        ../../io/sql/                    \\" >> Doxyfile_INPUT
 echo "        ../../io/xml/                    \\" >> Doxyfile_INPUT

documentation/users-guide/InstallandBuild.md

@@ -650,7 +650,7 @@ namespace descriptor ends with - the namespace is not a part of the
 filename. Extend in private .rootrc with a +Url.Special line.
 
 ``` {.cpp}
-Url.Special:             file: rfio: hpss: castor: gfal: dcache:
+Url.Special:             file: rfio: hpss: castor: dcache:
 +Url.Special:            /alien/- /castor/
 ```
 

io/CMakeLists.txt

@@ -11,9 +11,6 @@ add_subdirectory(xml)
 if(xml)
   add_subdirectory(xmlparser)
 endif()
-if(gfal)
-  add_subdirectory(gfal)
-endif()
 if(dcache)
   add_subdirectory(dcache)
 endif()