fixup

Signed-off-by: Paolo Insogna <paolo@cowtech.it>

Author: ShogunPanda

deps/libffi/libffi.gyp

@@ -147,8 +147,8 @@
                 'include/ffi_cfi.h',
                 'src/x86/asmnames.h',
                 'src/x86/win64_intel.S',
-                '<(INTERMEDIATE_DIR)/ffi.h',
-                '<(INTERMEDIATE_DIR)/fficonfig.h',
+                '<(SHARED_INTERMEDIATE_DIR)/libffi/ffi.h',
+                '<(SHARED_INTERMEDIATE_DIR)/libffi/fficonfig.h',
               ],
               'outputs': [
                 '<(INTERMEDIATE_DIR)/win64_intel.asm',
@@ -164,6 +164,8 @@
                 'include',
                 '--include-dir',
                 'src/x86',
+                '--include-dir',
+                '<(SHARED_INTERMEDIATE_DIR)/libffi',
                 '--define',
                 'FFI_STATIC_BUILD',
               ],