From 2dd764f8db070a95dd24131f63b2d546de08aa88 Mon Sep 17 00:00:00 2001
From: Ryan Pessa <dkived@gmail.com>
Date: Sat, 16 Apr 2016 23:08:58 -0500
Subject: [PATCH] add ccache support

---
 recipes/hostpython/__init__.py |  3 ++-
 recipes/sdl2/__init__.py       |  2 ++
 toolchain.py                   | 28 +++++++++++++++++++++++++++-
 3 files changed, 31 insertions(+), 2 deletions(-)

diff --git a/recipes/hostpython/__init__.py b/recipes/hostpython/__init__.py
index b259759..3afb3a4 100644
--- a/recipes/hostpython/__init__.py
+++ b/recipes/hostpython/__init__.py
@@ -48,7 +48,8 @@ class HostpythonRecipe(Recipe):
     def build_x86_64(self):
         sdk_path = sh.xcrun("--sdk", "macosx", "--show-sdk-path").strip()
         build_env = self.ctx.env.copy()
-        build_env["CC"] = "clang -Qunused-arguments -fcolor-diagnostics"
+        ccache = (build_env["CCACHE"] + ' ') if 'CCACHE' in build_env else ''
+        build_env["CC"] = ccache + "clang -Qunused-arguments -fcolor-diagnostics"
         build_env["LDFLAGS"] = " ".join([
                 "-lsqlite3",
                 "-lffi",
diff --git a/recipes/sdl2/__init__.py b/recipes/sdl2/__init__.py
index bb016d8..f3040c3 100644
--- a/recipes/sdl2/__init__.py
+++ b/recipes/sdl2/__init__.py
@@ -19,9 +19,11 @@ class LibSDL2Recipe(Recipe):
         self.set_marker("patched")
 
     def build_arch(self, arch):
+        env = arch.get_env()
         shprint(sh.xcodebuild,
                 "ONLY_ACTIVE_ARCH=NO",
                 "ARCHS={}".format(arch.arch),
+                "CC={}".format(env['CC']),
                 "-sdk", arch.sdk,
                 "-project", "Xcode-iOS/SDL/SDL.xcodeproj",
                 "-target", "libSDL",
diff --git a/toolchain.py b/toolchain.py
index 1b84fa0..b2a3aa7 100755
--- a/toolchain.py
+++ b/toolchain.py
@@ -122,6 +122,7 @@ class Arch(object):
     def __init__(self, ctx):
         super(Arch, self).__init__()
         self.ctx = ctx
+        self._ccsh = None
 
     def __str__(self):
         return self.arch
@@ -143,7 +144,32 @@ class Arch(object):
             for d in self.ctx.include_dirs]
 
         env = {}
-        env["CC"] = sh.xcrun("-find", "-sdk", self.sdk, "clang").strip()
+        ccache = sh.which('ccache').strip()
+        cc = sh.xcrun("-find", "-sdk", self.sdk, "clang").strip()
+        if ccache:
+            use_ccache = environ.get("USE_CCACHE", "1")
+            if use_ccache != '1':
+                env["CC"] = cc
+            else:
+                if not self._ccsh:
+                    self._ccsh = ccsh = sh.mktemp().strip()
+                    with open(ccsh, 'w') as f:
+                        f.write('#!/bin/sh\n')
+                        f.write(ccache + ' ' + cc + ' "$@"\n')
+                    sh.chmod('+x', ccsh)
+                else:
+                    ccsh = self._ccsh
+                env["USE_CCACHE"] = '1'
+                env["CCACHE"] = ccache
+                env["CC"] = ccsh
+
+                env.update({k: v for k, v in environ.items() if k.startswith('CCACHE_')})
+                env.setdefault('CCACHE_MAXSIZE', '10G')
+                env.setdefault('CCACHE_HARDLINK', 'true')
+                env.setdefault('CCACHE_SLOPPINESS', ('file_macro,time_macros,'
+                    'include_file_mtime,include_file_ctime,file_stat_matches'))
+        else:
+            env["CC"] = cc
         env["AR"] = sh.xcrun("-find", "-sdk", self.sdk, "ar").strip()
         env["LD"] = sh.xcrun("-find", "-sdk", self.sdk, "ld").strip()
         env["OTHER_CFLAGS"] = " ".join(include_dirs)