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| author |   Fulup Ar Foll <fulup@iot.bzh> | 2017-05-27 02:11:32 +0200 |
|---|---|---|
| committer | Fulup Ar Foll <fulup@iot.bzh> | 2017-05-27 02:11:32 +0200 |
| commit | 0d54228976a65cd7ade9182e4227801c9220f975 (patch) | |
| tree | 70ecbe5abdbcb3a14f018820f6c2356221ef9d46 /README.md | |
| parent | d2e42029ec04c3f224580f8007cdfbbfe0fc47a6 (diff) | |
Fixed Debug
Diffstat (limited to 'README.md')
| -rw-r--r-- | README.md | 50 |
1 files changed, 43 insertions, 7 deletions
@@ -60,22 +60,58 @@ AFB_daemon dependency on Standard Linux Distributions ``` -``` # Compile binding ``` -source ~/.bashrc # or any other file where your have place your compilation preferences -mkdir build -cd build -cmake -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX .. -make + source ~/.bashrc # or any other file where your have place your compilation preferences + mkdir build + cd build + cmake -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX .. + make - afb-daemon --ldpaths=. --port=1234 --workdir=. --roothttp=./htdocs --token="" --verbose + afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs --token="" --verbose speaker-test -twav -D hw:ep01 -c 2 firefox http://localhost:1234 ``` +# Local Source Debug with GDB + +Warning: technically AGL bindings are shared libraries loaded thought 'dlopen'. GDB supports source debug of dynamically +loaded libraries, but user should be warn that the actual path to sharelib symbols is directly inherited from DLOPEN. +As a result if you change your directory after binder start with --workdir=xxx then GDB will not find symbols anymore + + +``` + Examples: + + # WORK when running in direct + afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs + + # FAIL when using GDB with warning: Could not load shared library .... + gdb -args afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs + ... + warning: Could not load shared library symbols for ./build/ucs2-afb/afb-ucs2.so. + Do you need "set solib-search-path" or "set sysroot"? + ... +``` + +To debug sharelib symbol path: start your binder under GDB. Then break your session after the binder has +loaded its bindings. Finally use "info sharedlibrary" and check 'SymsRead'. If equal to 'No' then either you start GDB +from the wrong relative directory, either you have to use 'set solib-search-path' to force the path. + +``` + gdb -args afb-daemon --workdir=.. --ldpaths=build --port=1234 --roothttp=./htdocs + run + ... + NOTICE: API unicens added + NOTICE: Waiting port=1234 rootdir=. + NOTICE: Browser URL= http://localhost:1234 + (hit Ctrl-C to break the execution) + info sharedlibrary afb-* +``` + + # Running an debugging on a target ``` |