SERVER-25171: add scons cache support and enable on relevant non-push variants

1 files changed, 20 insertions, 0 deletions

diff --git a/buildscripts/generate_compile_expansions.py b/buildscripts/generate_compile_expansions.py
index 016a8c379a2..8e5b4e774b2 100644
--- a/buildscripts/generate_compile_expansions.py
+++ b/buildscripts/generate_compile_expansions.py
@@ -12,6 +12,8 @@
 import fileinput
 import json
 import re
+import os
+import sys
 
 # This function matches a version string and captures the "extra" part
 # If the version is a release like "2.3.4" or "2.3.4-rc0", this will return
@@ -57,3 +59,21 @@ else:
     print "src_suffix: r{0}".format(version_line)
 
 print "version: {0}".format(version_line)
+
+# configuration for scons cache.
+#
+if sys.platform.startswith("win"):
+    system_id_path = r"c:\mongodb-build-system-id"
+    default_cache_path_base = r"z:\data\scons-cache"
+else:
+    system_id_path = "/etc/mongodb-build-system-id"
+    default_cache_path_base = "/data/scons-cache"
+
+if os.path.isfile(system_id_path):
+    with open(system_id_path, "r") as f:
+        default_cache_path = os.path.join(default_cache_path_base, f.readline())
+
+        print "scons_cache_path: {0}".format(default_cache_path)
+
+        if os.getenv("USE_SCONS_CACHE") not in (None, False, "false", ""):
+            print "scons_cache_args: --cache --cache-dir={0}".format(default_cache_path)