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1 files changed, 43 insertions, 7 deletions
diff --git a/README.md b/README.md
index ec73e01..26bbc38 100644
--- a/README.md
+++ b/README.md
@@ -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
```