HP UX Web Development Tools manual Example 15 Specifying the location of object files

NOTE: The combined use of the –crossfile=deferand –crossfile=[pdbmodulelistlistfile]options are useful in the following situations:

•If you want to perform cross-file analysis on a set of object files that is bigger than the set of object files linked during the application build process, for example, if the application build creates multiple shared libraries, the default automatic cross-file analysis is done only across the files specified for each shared-library link command. In such cases, you can also force the analysis to be done on all the files by deferring the analysis using the -crossfile=deferoption until the whole application is built and then invoking the analysis on all the files in the PDB, by using the -crossfile=pdboption. Alternatively, you can use -crossfile=list option to specify object files from a subset of the shared libraries to perform cross-fileanalysis.

•If you want to perform cross-file analysis on a set of object files that is smaller than the set of object files linked during the application build process, for example, if you want to perform cross-file analysis on a few object files, you can compile only those object files, get a PDB with the intermediate representation and then use the -crossfile=pdboption to perform cross-file analysis. Alternately, compile the whole application with the -crossfile=deferoption and then use -crossfile=listoption to do the cross-file analysis on a subset of object files.

However, do not use the -crossfile=pdboption if the PDB contains diagnostic information of multiple applications because HP Code Advisor can misinterpret multiple definitions for the same symbols.In this scenario it is better to use the -crossfile=listor -crossfile=moduleoption to perform cross-file analysis on a subset of object files in the PDB.

For the -crossfile=listor -crossfile=listfileoptions, the location of each object file specified must be one of the following:

•Location of an existing object file build during the application compilation.

•Location of the object file as it would have been created during the application compilation.

Therefore, an object file does not need to exist (it may have been removed or you may have used the “-nobuild”option) as long as cadvise and the PDB are used to monitor the compilation that creates the object file.

Example 15 Specifying the location of object files

cd /tmp

$cadvise -pdb testpdb -crossfile=defer aCC 1.c 2.c 3.c -o objdir/testexec

For cross-file analysis on all the files used to build testexec, run the following commands:

$cadvise -pdb testpdb -crossfile=module:objdir/testexec Or

$cadvise -pdb testpdb -crossfile=module:/tmp/objdir/testexec

NOTE: To specify the module name as specified with the-ooption you must be in the same directory where the first command was invoked. To invoke cadvise from any other location you must specify the absolute path of the module. For cross-file analysis on object files 1.o and 2.o, run the following command:

$cadvise -pdb testpdb -crossfile=list:1.o:2.o

OR

$cadvise -pdb testpdb -crossfile=list:/tmp/1.o:/tmp/2.o

24 Using cross-file analysis