Bug 1163077 - Never elfhack if --disable-compile-environment is set. r=glandium

A host elfhack binary is only built when there is a compile environment.

--HG--
extra : rebase_source : 4f1da429c581dfd81cbe3d5164c7586066cf6e79
extra : amend_source : f26fe7f3b44291f38459a81b9ff31bd6dbd220aa
extra : histedit_source : 93c628a500c66c46d522bfe678500bf5b5bf0de9

python/mozbuild/mozpack/executables.py

@@ -105,8 +105,9 @@ def may_elfhack(path):
     # elfhack only supports libraries. We should check the ELF header for
     # the right flag, but checking the file extension works too.
     from buildconfig import substs
-    return 'USE_ELF_HACK' in substs and substs['USE_ELF_HACK'] and \
-           path.endswith(substs['DLL_SUFFIX'])
+    return ('USE_ELF_HACK' in substs and substs['USE_ELF_HACK'] and
+        path.endswith(substs['DLL_SUFFIX']) and
+        'COMPILE_ENVIRONMENT' in substs and substs['COMPILE_ENVIRONMENT'])
 
 
 def elfhack(path):