diff --git a/ports/expat/patches/0001-add-shared-library-support.patch b/ports/expat/patches/0001-add-shared-library-support.patch
new file mode 100644
index 00000000..355b11eb
--- /dev/null
+++ b/ports/expat/patches/0001-add-shared-library-support.patch
@@ -0,0 +1,48 @@
+diff -ruN expat-2.7.1/configure expat-2.7.1-banan_os/configure
+--- expat-2.7.1/configure	2025-03-27 21:46:37.000000000 +0200
++++ expat-2.7.1-banan_os/configure	2025-08-10 00:50:27.773898797 +0300
+@@ -6679,6 +6679,10 @@
+   lt_cv_deplibs_check_method=pass_all
+   ;;
+ 
++banan_os*)
++  lt_cv_deplibs_check_method=pass_all
++  ;;
++
+ beos*)
+   lt_cv_deplibs_check_method=pass_all
+   ;;
+@@ -12479,6 +12483,16 @@
+   esac
+   ;;
+ 
++banan_os*)
++  version_type=linux # correct to gnu/linux during the next big refactor
++  need_lib_prefix=no
++  need_version=no
++  library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext'
++  soname_spec='$libname$release$shared_ext$major'
++  dynamic_linker="$host_os DynamicLoader.so"
++  shlibpath_var=LD_LIBRARY_PATH
++  ;;
++
+ beos*)
+   library_names_spec='$libname$shared_ext'
+   dynamic_linker="$host_os ld.so"
+@@ -18079,6 +18093,16 @@
+   esac
+   ;;
+ 
++banan_os*)
++  version_type=linux # correct to gnu/linux during the next big refactor
++  need_lib_prefix=no
++  need_version=no
++  library_names_spec='$libname$release$shared_ext$versuffix $libname$release$shared_ext$major $libname$shared_ext'
++  soname_spec='$libname$release$shared_ext$major'
++  dynamic_linker="$host_os DynamicLoader.so"
++  shlibpath_var=LD_LIBRARY_PATH
++  ;;
++
+ beos*)
+   library_names_spec='$libname$shared_ext'
+   dynamic_linker="$host_os ld.so"