From 1b2e24e14ee72e54e466be2512c78272f62d60b4 Mon Sep 17 00:00:00 2001
From: Vincent Prince <vincent.prince.fr@gmail.com>
Date: Mon, 16 Sep 2019 13:21:44 +0200
Subject: [PATCH 01/10] Tell scons to use build settings from environment
 variables

Signed-off-by: Sven Ebenfeld <sven.ebenfeld@gmail.com>
Signed-off-by: Vincent Prince <vincent.prince.fr@gmail.com>
---
 SConstruct                | 8 ++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/SConstruct b/SConstruct
index 7ebbcbc..e63cf15 100644
--- a/SConstruct
+++ b/SConstruct
@@ -608,6 +608,7 @@ def variable_arch_converter(val):
         'amd64':  'x86_64',
         'emt64':   'x86_64',
         'x86':    'i386',
+        'aarch64': 'arm64',
     }
     val = val.lower()
 
@@ -695,7 +696,8 @@ env_vars.Add(
 )
 
 env_vars.Add('CC',
-    help='Select the C compiler to use')
+    help='Select the C compiler to use',
+    default=os.getenv('CC'))
 
 env_vars.Add('CCFLAGS',
     help='Sets flags for the C and C++ compiler',
@@ -715,7 +717,8 @@ env_vars.Add('CPPPATH',
     converter=variable_shlex_converter)
 
 env_vars.Add('CXX',
-    help='Select the C++ compiler to use')
+    help='Select the C++ compiler to use',
+    default=os.getenv('CXX'))
 
 env_vars.Add('CXXFLAGS',
     help='Sets flags for the C++ compiler',
@@ -1018,6 +1021,7 @@ envDict = dict(BUILD_ROOT=buildDir,
                )
 
 env = Environment(variables=env_vars, **envDict)
+env.PrependENVPath('PATH', os.getenv('PATH'))
 del envDict
 
 for var in ['CC', 'CXX']:
 
-- 
2.7.4