FreeBSD patches to gyp, see also http://codereview.chromium.org/172032.

pylib/gyp/generator/make.py

Index: pylib/gyp/generator/make.py
===================================================================
--- pylib/gyp/generator/make.py	(revision 601)
+++ pylib/gyp/generator/make.py	(working copy)
@@ -32,7 +32,7 @@
 generator_default_variables = {
   'EXECUTABLE_PREFIX': '',
   'EXECUTABLE_SUFFIX': '',
-  'OS': 'linux',
+#  'OS': 'linux',
   'INTERMEDIATE_DIR': '$(obj)/geni',
   'SHARED_INTERMEDIATE_DIR': '$(obj)/gen',
   'PRODUCT_DIR': '$(builddir)',
@@ -614,8 +614,8 @@
         config = configs[configname]
         self.WriteList(config.get('ldflags'), 'LDFLAGS_%s' % configname)
       self.WriteList(spec.get('libraries'), 'LIBS')
-      self.WriteLn('%s: LDFLAGS := $(LDFLAGS_$(BUILDTYPE)) '
-                   '$(LIBS)' % self.output)
+      self.WriteLn('%s: LDFLAGS := $(LDFLAGS_$(BUILDTYPE))' % self.output)
+      self.WriteLn('%s: LIBS := $(LIBS)' % self.output)
 
     if self.type == 'executable':
       self.WriteDoCmd([self.output], link_deps, 'link')