[jna] add fix for older libffi

[Levente Farkas]

commit b6c85c9134f9d365b062b128ae431d99a4de6400
Author: Levente Farkas <lfarkas at lfarkas.org>
Date:   Mon Jul 15 15:14:02 2013 +0200

    add fix for older libffi

 jna-4.0.0-ffi.patch |   12 ++++++++++++
 jna.spec            |    8 ++++++--
 2 files changed, 18 insertions(+), 2 deletions(-)
---
diff --git a/jna-4.0.0-ffi.patch b/jna-4.0.0-ffi.patch
new file mode 100644
index 0000000..05457f0
--- /dev/null
+++ b/jna-4.0.0-ffi.patch
@@ -0,0 +1,12 @@
+diff -up ./native/callback.c.ffi ./native/callback.c
+--- ./native/callback.c.ffi	2013-07-15 14:41:13.643452439 +0200
++++ ./native/callback.c	2013-07-15 14:47:23.254830318 +0200
+@@ -253,7 +253,7 @@ create_callback(JNIEnv* env, jobject obj
+     case 'D': cb->fptr_offset = OFFSETOF(env, CallDoubleMethod); break;
+     default: cb->fptr_offset = OFFSETOF(env, CallObjectMethod); break;
+     }
+-    status = ffi_prep_cif_var(&cb->java_cif, java_abi, 2, argc+3, java_ffi_rtype, cb->java_arg_types);
++    status = ffi_prep_cif(&cb->java_cif, java_abi, argc+3, java_ffi_rtype, cb->java_arg_types);
+     if (!ffi_error(env, "callback setup (2)", status)) {
+       ffi_prep_closure_loc(cb->closure, &cb->cif, callback_dispatch, cb,
+                            cb->x_closure);
diff --git a/jna.spec b/jna.spec
index 971e6a6..efe0dbd 100644
--- a/jna.spec
+++ b/jna.spec
@@ -1,3 +1,5 @@
+%global innerversion 4.0
+
 Name:           jna
 Version:        4.0.0
 Release:        1%{?dist}
@@ -13,7 +15,7 @@ URL:            https://jna.dev.java.net/
 #   mv twall-jna-* jna-%{version}
 #   rm -rf jna-%{version}/{dist/*,www}
 #   tar cjf ~/rpm/SOURCES/jna-%{version}.tar.gz jna-%{version}
-Source0:        https://github.com/twall/jna/archive/%{name}-%{version}.tar.gz
+Source0:        https://github.com/twall/jna/archive/%{name}-%{innerversion}.tar.gz
 Source1:	package-list
 Patch0:         jna-3.5.0-build.patch
 # This patch is Fedora-specific for now until we get the huge
@@ -29,6 +31,7 @@ Patch3:         jna-3.5.2-gcj-javadoc.patch
 # junit cames from rpm
 Patch4:         jna-4.0.0-junit.patch
 Patch5:         jna-4.0.0-charfix.patch
+Patch6:         jna-4.0.0-ffi.patch
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 
 # We manually require libffi because find-requires doesn't work
@@ -84,7 +87,7 @@ This package contains the contributed examples for %{name}.
 
 
 %prep
-%setup -q -n %{name}-%{version}
+%setup -q -n %{name}-%{innerversion}
 cp %{SOURCE1} .
 %patch0 -p1 -b .build
 %patch1 -p1 -b .loadlib
@@ -94,6 +97,7 @@ chmod -Rf a+rX,u+w,g-w,o-w .
 %patch3 -p0 -b .gcj-javadoc
 %patch4 -p1 -b .junit
 %patch5 -p1 -b .charfix
+%patch6 -p1 -b .ffi
 
 # all java binaries must be removed from the sources
 #find . -name '*.jar' -delete