ports: Add libffi port

ports/libffi/build.sh

@@ -0,0 +1,11 @@
+#!/bin/bash ../install.sh
+
+NAME='libffi'
+VERSION='3.5.2'
+DOWNLOAD_URL="https://github.com/libffi/libffi/releases/download/v$VERSION/libffi-$VERSION.tar.gz#f3a3082a23b37c293a4fcd1053147b371f2ff91fa7ea1b2a52e335676bac82dc"
+CONFIG_SUB=('config.sub')
+
+post_install() {
+	# remove libtool file
+	rm -f $BANAN_SYSROOT/usr/lib/libffi.la
+}

ports/libffi/patches/0001-add-shared-library-support.patch

@@ -0,0 +1,48 @@
+diff -ruN libffi-3.5.2/configure libffi-3.5.2-banan_os/configure
+--- libffi-3.5.2/configure	2025-08-02 09:44:34.000000000 +0300
++++ libffi-3.5.2-banan_os/configure	2025-08-08 18:24:29.271963294 +0300
+@@ -7432,6 +7432,10 @@
+   lt_cv_deplibs_check_method=pass_all
+   ;;
+ 
++banan_os*)
++  lt_cv_deplibs_check_method=pass_all
++  ;;
++
+ beos*)
+   lt_cv_deplibs_check_method=pass_all
+   ;;
+@@ -12978,6 +12982,16 @@
+   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"
+@@ -17612,6 +17626,16 @@
+   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"