pass

except ImportError :

pass

# Set speed options

env.Decider("MD5-timestamp")

env.SetOption("max_drift", 1)

env.SetOption("implicit_cache", True)

# Set the default compiler to CLang on OS X, and set the necessary flags

if env["PLATFORM"] == "darwin" and env["target"] == "native" :

if "cc" not in env :

env["CC"] = "clang"

if platform.machine() == "x86_64" :

env["CCFLAGS"] = ["-arch", "x86_64"]

if "cxx" not in env :

env["CXX"] = "clang++"

if "link" not in env :

# Use clang++ instead of clang, otherwise XCode's clang will cause linking errors due to missing C++ standard lib.

env["LINK"] = "clang++"

if platform.machine() == "x86_64" :

env.Append(LINKFLAGS = ["-arch", "x86_64"])

# Set QT_SELECT variable to enable building on systems that have Qt4 and Qt5 installed and use qtselect

if env["PLATFORM"] != "darwin" and env["PLATFORM"] != "win32" :

if env["qt5"] :

env["ENV"]["QT_SELECT"] = "qt5"

else:

env["ENV"]["QT_SELECT"] = "qt4"

# Check whether we are running inside scan-build, and override compiler if so

if "CCC_ANALYZER_HTML" in os.environ :

for key, value in os.environ.items() :

if key.startswith("CCC_") or key.startswith("CLANG") :

env["ENV"][key] = value

env["CC"] = os.environ["CC"]

env["CXX"] = os.environ["CXX"]

# Override the compiler with custom variables set at config time

if "cc" in env :

env["CC"] = env["cc"]

if "cxx" in env :

env["CXX"] = env["cxx"]

if "ar" in env :

env["AR"] = env["ar"]

if "link" in env :

env["SHLINK"] = env["link"]

env["LINK"] = env["link"]

# Process user-defined external flags

for flags_type in ["ccflags", "cxxflags", "linkflags"] :

if flags_type in env :

if isinstance(env[flags_type], str) :

# FIXME: Make the splitting more robust

env[flags_type.upper()] = env[flags_type].split(" ")

else :

env[flags_type.upper()] = env[flags_type]

# This isn't a real flag (yet) AFAIK. Be sure to append it to the CXXFLAGS

# where you need it