new ffi recipe

.gitignore

@@ -1,4 +1,6 @@
 *.swo
+*.pyc
+*.pyo
 *.swp
 freetype-*
 build/*

recipes/libffi/__init__.py

@@ -0,0 +1,33 @@
+from toolchain import Recipe, shprint
+import sh
+
+
+class LibffiRecipe(Recipe):
+    version = "3.0.13"
+    url = "ftp://sourceware.org/pub/libffi/libffi-{version}.tar.gz"
+
+    def prebuild_arch(self, arch):
+        if self.has_marker("patched"):
+            return
+        self.apply_patch("ffi-3.0.13-sysv.S.patch")
+        if arch in ("armv7", "armv7s", "arm64"):
+            shprint(sh.sed,
+                    "-i.bak",
+                    "s/-miphoneos-version-min=4.0/-miphoneos-version-min=6.0/g",
+                    "generate-ios-source-and-headers.py")
+        self.set_marker("patched")
+
+    def build_arch(self, arch):
+        if arch == "i386":
+            target_name = "libffi OS X"
+        else:
+            target_name = "libffi iOS"
+
+        shprint(sh.xcodebuild,
+                "-project", "libffi.xcodeproj",
+                "-target", target_name,
+                "-configuration", "Release",
+                "-sdk", "iphoneos{}".format(self.ctx.sdkver),
+                "OTHER_CFLAGS=-no-integrated-as")
+
+recipe = LibffiRecipe()