diff --git a/ReactCommon/DEFS b/ReactCommon/DEFS
index a1af94d5f..4ee6051f8 100644
--- a/ReactCommon/DEFS
+++ b/ReactCommon/DEFS
@@ -1,8 +1,15 @@
 # Set up common deps
 
+# Building is not supported in OSS right now
+def rn_xplat_cxx_library(**kwargs):
+  pass
+
 GLOG_DEP = "//ReactAndroid/build/third-party-ndk/glog:glog"
 
 INSPECTOR_FLAGS = []
 
 JSC_DEPS = []
 JSC_INTERNAL_DEPS = []
+
+THIS_IS_FBOBJC = False
+THIS_IS_FBANDROID = False
diff --git a/ReactCommon/cxxreact/BUCK b/ReactCommon/cxxreact/BUCK
index e4991ff4c..a252df565 100644
--- a/ReactCommon/cxxreact/BUCK
+++ b/ReactCommon/cxxreact/BUCK
@@ -9,7 +9,7 @@ if THIS_IS_FBOBJC:
   inherited_buck_flags = STATIC_LIBRARY_IOS_FLAGS
   CXX_LIBRARY_COMPILER_FLAGS += inherited_buck_flags.get_flag_value('compiler_flags')
 
-fb_xplat_cxx_library(
+rn_xplat_cxx_library(
     name = "module",
     compiler_flags = CXX_LIBRARY_COMPILER_FLAGS,
     exported_headers = [
@@ -29,7 +29,7 @@ fb_xplat_cxx_library(
     ],
 )
 
-fb_xplat_cxx_library(
+rn_xplat_cxx_library(
     name = "jsbigstring",
     srcs = [
         "JSBigString.cpp",
@@ -53,7 +53,7 @@ fb_xplat_cxx_library(
     ],
 )
 
-fb_xplat_cxx_library(
+rn_xplat_cxx_library(
     name = "samplemodule",
     srcs = ["SampleCxxModule.cpp"],
     compiler_flags = CXX_LIBRARY_COMPILER_FLAGS + [
@@ -93,7 +93,7 @@ CXXREACT_PUBLIC_HEADERS = [
     "SystraceSection.h",
 ]
 
-fb_xplat_cxx_library(
+rn_xplat_cxx_library(
     name = "bridge",
     srcs = glob(
         ["*.cpp"],
diff --git a/ReactCommon/jschelpers/BUCK b/ReactCommon/jschelpers/BUCK
index fb0e0a4a2..d613dd574 100644
--- a/ReactCommon/jschelpers/BUCK
+++ b/ReactCommon/jschelpers/BUCK
@@ -10,7 +10,7 @@ EXPORTED_HEADERS = [
     "Value.h",
 ]
 
-fb_xplat_cxx_library(
+rn_xplat_cxx_library(
     name = "jscinternalhelpers",
     srcs = glob(
         ["*.cpp"],
@@ -39,7 +39,7 @@ fb_xplat_cxx_library(
     ],
 )
 
-fb_xplat_cxx_library(
+rn_xplat_cxx_library(
     name = "jschelpers",
     srcs = [],
     compiler_flags = [