[CI] Add parsing of library to lib loading test (using f1st class in lib from rootmap)

scripts/checklibs.sh

@@ -15,16 +15,33 @@ LIBDIR=${2:-../lib}
 # libraries are real files with the extensions .so and for macosx .dylib
 all_libs=$(find $LIBDIR -type f -o -type l | grep -e \.dylib$ -e \.so$)
 
+# Token used to find the first line with a class definition in the .rootmap files
+start_token_class="class "
+
 tmpfile=$(mktemp)
 
-ok=true
+okay=true
 for lib in $all_libs; do
-  echo "Loading the library $lib"
-  root -l -q -b $SCRIPTDIR/loadlib.C\(\"$lib\"\) &> $tmpfile
+  first_class=""
+  rootmap_file="${lib%%".so"}".rootmap
+  if [ -f "${rootmap_file}" ]; then
+    rootmap_defs_token="\[ lib"
+    if [[ ${rootmap_file} == *"libHal"* ]]; then
+      # Commented out for now as lead to missing headers detection in 60% of HAL libraries (9/14)
+      # rootmap_defs_token="\[ Hal"
+    fi
+
+    first_class=$(awk -v token="${rootmap_defs_token}" '$0 ~ token ,0' ${rootmap_file} | grep -m1 "${start_token_class}" | tr -d ';')
+    first_class="${first_class##"${start_token_class}"}"
+  fi
+
+  # echo "Loading the library ${lib} and parsing it for class ${first_class}"
+
+  root -l -q -b "${SCRIPTDIR}/loadlib.C(\"${lib}\", \"${first_class}\")" &> ${tmpfile}
   retval=$?
   if [[ retval -ne 0 ]]; then
     echo ""
-    echo "Problem loading the library $lib"
+    echo "Problem loading or parsing the library $lib: ${retval}"
     cat $tmpfile
     echo ""
     okay=false
@@ -35,7 +52,7 @@ rm $tmpfile
 
 if [[ "$okay" = "false" ]]; then
   echo ""
-  echo "Not all libraries could be loaded"
+  echo "Not all libraries could be loaded and parsed"
   echo "Test failed"
   exit 1
 else

scripts/loadlib.C

-/* Copyright (C) 2020 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
+/* Copyright (C) 2020-2025 GSI Helmholtzzentrum fuer Schwerionenforschung, Darmstadt
    SPDX-License-Identifier: GPL-3.0-only
-   Authors: Florian Uhlig [committer] */
+   Authors: Florian Uhlig [committer], Pierre-Alain Loizeau */
 
-Int_t loadlib(TString libname)
+Int_t loadlib(TString libname, TString classname = "")
 {
+  // This method returns 0 if it succeed, 1 if already loaded, -1 if lib not found and -2 if failed
   Int_t retval = gSystem->Load(libname);
+  if (0 == retval && "" != classname) {
+    // This one returns 1 in case of success and 0 in case of failure
+    // => Remap to next negative code after those used by the Load thod above
+    if (1 == gInterpreter->AutoParse(classname)) {
+      retval = 0;
+    }
+    else {
+      retval = -3;
+    }
+  }
   return retval;
 }