Merge pull request #300 from nathanchance/adjust-base-configuration

Adjust the base LLVM configuration

Author: msfjarvis

tc_build/llvm.py

@@ -32,7 +32,14 @@ def __init__(self):
         self.build_targets = ['all']
         self.ccache = False
         self.check_targets = []
-        self.cmake_defines = {}
+        self.cmake_defines = {
+            # Reduce dynamic dependencies
+            'LLVM_ENABLE_LIBXML2': 'OFF',
+            # While this option reduces build resources and disk space, it
+            # increases start up time for the tools dynamically linked against
+            # it and limits optimization opportunities for LTO, PGO, and BOLT.
+            'LLVM_LINK_LLVM_DYLIB': 'OFF',
+        }
         self.install_targets = []
         self.llvm_major_version = 0
         self.tools = None