--- configure.in
+++ configure.in
@@ -1988,6 +1988,13 @@
@@ -1988,6 +1988,14 @@
AC_ARG_WITH(system_ffi,
AC_HELP_STRING(--with-system-ffi, build _ctypes module using an installed ffi library))
+if test "$with_system_ffi" = "yes"; then
+ LIBFFI_INCLUDEDIR="`pkg-config libffi --cflags-only-I 2>/dev/null | sed -e 's/^-I//'`"
+ PKG_PROG_PKG_CONFIG()
+ LIBFFI_INCLUDEDIR="`$PKG_CONFIG libffi --cflags-only-I 2>/dev/null | sed -e 's/^-I//'`"
+else
+ LIBFFI_INCLUDEDIR=""
+fi