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Documentation/devtools/maemo5/maemo-debug-scripts

Latest revision as of 15:13, 11 March 2010

This article documents a developer tool. A list of available devtools is available, together with installation instructions.

[edit] Description

maemo-debug-scripts is a convenience package for maemo developers needing to debug their programs. The package will:

• Post-install a symlink required by Gdb/Valgrind/Oprofile to find the debug symbol files in Scratchbox. The files are installed in /usr/lib/debug/<library path>, but in Scratchbox the library realpaths are /targets/<target name>/<library path>.

• Depend from libc6-dbg. Without libc6-dbg threads cannot be debugged with Gdb and Valgrind reports redundant errors for the dynamic loader (its error suppressions for /lib/ld functions can match them only with the debug symbol file as stripped binary doesn't contain static function names)

• Depend from target native Gdb. The Scratchbox host version of Gdb (cross-gdb) doesn't know how to load the correct thread library (even on x86) and it cannot debug ARM core-dumps. Native one can.

• Install a few helper scripts:

native-gdb

runs the target native Gdb (by default Scratchbox runs the host binary if it exists, this script overrides that)

debug-dep-install

installs debug symbols for given binaries and their dependencies listed by "ldd"

debug-pkg-check

checks the correctness of a debug package for a given package

list-mmapped-libs

lists all packages containing libs and binaries that given process uses. It can be used to find out the libraries mmap()ed through dlopen that "ldd" (used by debug-deb-install script) doesn't find

run-with-valgrind

helper script for running a binary with Valgrind memcheck plugin (memory access errors, leaks etc) so that all suitable options are set for it

run-with-callgrind

helper script for running a binary with Valgrind callgrind plugin (performance profiling) so that all suitable options are set for it

run-with-massif

helper script for running a binary with Valgrind massif plugin (memory usage visualization) so that all suitable options are set for it

run-with-helgrind

helper script for running a binary with Valgrind helgrind plugin (race condition detector for threaded programs) so that all suitable options are set

run-with-strace

helper script for running a binary with strace. Like above helper scripts, handles maemo-launched binaries automatically

[edit] Packages

source: maemo-debug-scripts

binary: maemo-debug-scripts

[edit] Usage Examples

-

[edit] Links

[debug-dep-install man page](/development/documentation/man_pages/debug-dep-install.html)

[debug-pkg-check man page](/development/documentation/man_pages/debug-pkg-check.html)

[list-mmapped-libs man page](/development/documentation/man_pages/list-mmapped-libs.html)

[native-gdb man page](/development/documentation/man_pages/native-gdb.html)

[run-with-callgrind man page](/development/documentation/man_pages/run-with-callgrind.html)

[run-with-massif man page](/development/documentation/man_pages/run-with-massif.html)

[run-with-memcheck man page](/development/documentation/man_pages/run-with-memcheck.html)

[run-with-helgrind man page](/development/documentation/man_pages/run-with-helgrind.html)

[run-with-strace man page](/development/documentation/man_pages/run-with-strace.html)

[edit] See Also

gdb, valgrind, strace