ioc: prune module directories from non-static builds.

Modules may contain several artifacts, including configuration files,
graphical interface files and other repository artifacts that do not
need to be in the IOC image.

Remove them all except the ones containing EPICS database (`.db` and
`.template`) or autosave requirement (`.req`) files, besides shared
libraries. `bin` is also removed, as only $REPONAME and $RUNDIR should
contain target executables.

base/lnls-prune-artifacts.sh

@@ -15,6 +15,14 @@ get_linked_libraries() {
     done | sort | uniq
 }
 
+find_shared_libs() {
+    search_paths=$@
+
+    libs=$(find $search_paths -type f -executable -name *.so* -print)
+
+    echo "$libs" | grep -E "*.so(.[0-9]+)*$" | sort | uniq
+}
+
 get_used_epics_modules() {
     targets=$@
 
@@ -53,9 +61,7 @@ remove_static_libs() {
 remove_unused_shared_libs() {
     targets=$@
 
-    remove_libs=$(find /opt /usr/local -type f -executable -name *.so* -print)
-    remove_libs=$(echo "$remove_libs" | grep -E "*.so(.[0-9]+)*$" | sort | uniq)
-
+    remove_libs=$(find_shared_libs /opt /usr/local)
     used_libs=$(get_linked_libraries $targets)
 
     for lib in $used_libs; do
@@ -70,7 +76,27 @@ remove_unused_shared_libs() {
     done
 }
 
-remove_unused_epics_modules() {
+prune_module_dirs() {
+    module=$1
+
+    keep_paths="
+        $(find_shared_libs $module)
+        $(find $module -type f -regex ".*\.\(db\|template\|req\)" -printf "%h\n" | sort | uniq)
+    "
+
+    for candidate in $(find $module -type d); do
+        [ -d $candidate ] || continue
+
+        if [[ ! $keep_paths =~ "$candidate".* ]]; then
+            size=$(du -hs $candidate | cut -f 1)
+
+            printf "Removing directory '$candidate' ($size)...\n"
+            rm -rf $candidate
+        fi
+    done
+}
+
+clean_up_epics_modules() {
     targets=$@
 
     used_modules=$(get_used_epics_modules $targets)
@@ -81,10 +107,12 @@ remove_unused_epics_modules() {
 
             echo "Removing module '$module' ($size)..."
             rm -rf $module
+        elif [ -d $module/lib ]; then
+            prune_module_dirs $module
         fi
     done
 }
 
-remove_unused_epics_modules $target_paths
+clean_up_epics_modules $target_paths
 remove_static_libs /opt
 remove_unused_shared_libs $target_paths