hooks/post-install: check for -private-devel if PRIVATE_API is used

common/hooks/post-install/15-qt-private-api.sh

@@ -0,0 +1,60 @@
+# vim: set ts=4 sw=4 et ft=bash :
+#
+# This hook execute the following tasks:
+# - warn if packages uses private Qt API but makedepends doesn't have
+# qt6-*-private-devel
+#
+# This hook only really target qt6-base-private-devel, a lot of packages
+# linked with Qt6::CorePrivate and Qt6::GuiPrivate, yet don't need its
+# headers.
+
+get_qt_private() {
+    local _elf _fn _lf
+    find ${PKGDESTDIR} -type f |
+    while read -r _fn; do
+        trap - ERR
+        _lf=${_fn#${PKGDESTDIR}}
+        if [ "${skiprdeps/${_lf}/}" != "${skiprdeps}" ]; then
+            continue
+        fi
+        read -n4 _elf < "$_fn"
+        if [ "$_elf" = $'\177ELF' ]; then
+            $OBJDUMP -p "$_fn" |
+            sed -n '
+                /required from /{s/.*required from \(.*\):/\1/;h;}
+                /Qt_[0-9]*_PRIVATE_API/{g;p;}
+            '
+        fi
+    done |
+    sort -u
+}
+
+
+hook() {
+    local _list _shlib _version _md _v _ok
+
+    if [ -n "$noverifyrdeps" ]; then
+        return 0
+    fi
+
+    _list=$(get_qt_private)
+    for _shlib in $_list; do
+        msg_normal "${pkgver}: requires PRIVATE_API from $_shlib\n"
+    done
+    _version=$(printf '%s\n' $_list | sed 's/^libQt\([0-9]*\).*/\1/' | grep -v '^5$' | uniq)
+    for _v in $_version; do
+        _ok=
+        for _md in ${makedepends}; do
+            case "${_md}" in
+                # Anything will works, because they're updated together
+                qt${_v}-*-private-devel)
+                    _ok=yes
+                    break
+                    ;;
+            esac
+        done
+        if [ -z "$_ok" ]; then
+            msg_warn "${pkgver}: using Qt${_v}_PRIVATE_API but doesn't use qt${_v}-*-private-devel\n"
+        fi
+    done
+}