ccc: Introduce ToolChains for mapping Actions to Tools which can

perform them.

 - A ToolChain is a coherent set of tools use in a compilation
   process. The idea is that a ToolChain holds roughly the information
   (specs, search paths, etc.) that is in a single gcc binary.

 - The default ToolChain is selected by the host and will generally
   correspond to what the default system compiler would do. However,
   this can be over-riden for a variety of purposes, for example the
   by the driver driver or for testing.

llvm-svn: 62021

1 files changed, 16 insertions, 8 deletions

diff --git a/clang/tools/ccc/ccclib/HostInfo.py b/clang/tools/ccc/ccclib/HostInfo.py
index 507ac69cd5c..5f681495e13 100644
--- a/clang/tools/ccc/ccclib/HostInfo.py
+++ b/clang/tools/ccc/ccclib/HostInfo.py
@@ -1,10 +1,12 @@
+import ToolChain
+
 class HostInfo(object):
     """HostInfo - Config information about a particular host which may
     interact with driver behavior. This can be very different from the
     target(s) of a particular driver invocation."""
 
-    def __init__(self):
-        pass
+    def __init__(self, driver):
+        self.driver = driver
 
     def getArchName(self):
         abstract
@@ -18,6 +20,9 @@ class DarwinHostInfo(HostInfo):
     def useDriverDriver(self):
         return True
 
+    def getToolChain(self):
+        return ToolChain.Darwin_ToolChain(self.driver)
+
 class DarwinPPCHostInfo(DarwinHostInfo):
     def getArchName(self):
         return 'ppc'
@@ -39,14 +44,14 @@ def getDarwinHostInfo(driver):
     bits = driver.getHostBits()
     if machine == 'i386':
         if bits == '32':
-            return DarwinX86HostInfo()
+            return DarwinX86HostInfo(driver)
         if bits == '64':
-            return DarwinX86_64HostInfo()
+            return DarwinX86_64HostInfo(driver)
     elif machine == 'ppc':
         if bits == '32':
-            return DarwinPPCHostInfo()
+            return DarwinPPCHostInfo(driver)
         if bits == '64':
-            return DarwinPPC_64HostInfo()
+            return DarwinPPC_64HostInfo(driver)
             
     raise RuntimeError,'Unrecognized Darwin platform: %r:%r' % (machine, bits)
 
@@ -59,8 +64,11 @@ class UnknownHostInfo(HostInfo):
     def useDriverDriver(self):
         return False
 
+    def getToolChain(self):
+        return ToolChain.Generic_GCC_ToolChain(self.driver)
+
 def getUnknownHostInfo(driver):
-    return UnknownHostInfo()
+    return UnknownHostInfo(driver)
 
 ####
 
@@ -76,4 +84,4 @@ def getHostInfo(driver):
         return handler(driver)
 
     driver.warning('Unknown host %r, using generic host information.' % system)
-    return UnknownHostInfo()
+    return UnknownHostInfo(driver)