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. Binaries directory (`bin`) is also removed, as only $REPONAME
and $RUNDIR should contain target executables, which are filtered out
from the list.

base/lnls-prune-artifacts.sh

@@ -36,6 +36,12 @@ find_elf_executables() {
     done < <(find $targets -type f -executable)
 }
 
+find_shared_libs() {
+    libs=$(find_elf_executables $@)
+
+    echo "$libs" | grep -E "*.so(.[0-9]+)*$" | sort -u
+}
+
 find_linked_libraries() {
     executables=$(find_elf_executables $@)
 
@@ -86,9 +92,7 @@ remove_static_libs() {
 
 remove_unused_shared_libs() {
     used_libs=$(find_linked_libraries $@)
-
-    remove_libs=$(find_elf_executables /opt /usr/local)
-    remove_libs=$(echo "$remove_libs" | grep -E "*.so(.[0-9]+)*$" | sort -u)
+    remove_libs=$(find_shared_libs /opt /usr/local)
 
     for lib in $used_libs; do
         remove_libs=$(echo "$remove_libs" | grep -vx $lib)
@@ -102,7 +106,27 @@ 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 -u)
+    "
+
+    while read -r candidate; 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 < <(find $module -type d)
+}
+
+clean_up_epics_modules() {
     targets=$@
 
     all_modules=$(get_all_epics_modules)
@@ -122,8 +146,15 @@ remove_unused_epics_modules() {
         echo "Removing module '$module' ($size)..."
         rm -rf $module
     done
+
+    prune_dirs=$(filter_out_paths "$used_modules" "$targets")
+
+    for dir in $prune_dirs; do
+        echo "Pruning module '$dir'..."
+        prune_module_dirs $dir
+    done
 }
 
-remove_unused_epics_modules $@
+clean_up_epics_modules $@
 remove_static_libs /opt
 remove_unused_shared_libs $@