temporary fix issee #6: reduce --std requirements to support cuda 8.

Author: traveller59

second/utils/buildtools/command.py

@@ -17,7 +17,7 @@ class Gpp:
     def __init__(self,
                  sources,
                  target,
-                 std="c++17",
+                 std="c++11",
                  includes: list = None,
                  defines: dict = None,
                  cflags: str = None,
@@ -111,7 +111,7 @@ def __init__(self,
                  sources,
                  target,
                  arch=None,
-                 std="c++14",
+                 std="c++11",
                  includes: list = None,
                  defines: dict = None,
                  cflags: str = None,
@@ -149,7 +149,7 @@ class CUDALink(Gpp):
     def __init__(self,
                  sources,
                  target,
-                 std="c++17",
+                 std="c++11",
                  includes: list = None,
                  defines: dict = None,
                  cflags: str = None,

second/utils/buildtools/pybind11_build.py

@@ -12,7 +12,7 @@ class Pybind11Link(Gpp):
     def __init__(self,
                  sources,
                  target,
-                 std="c++14",
+                 std="c++11",
                  includes: list = None,
                  defines: dict = None,
                  cflags: str = None,
@@ -45,7 +45,7 @@ class Pybind11CUDALink(CUDALink):
     def __init__(self,
                  sources,
                  target,
-                 std="c++14",
+                 std="c++11",
                  includes: list = None,
                  defines: dict = None,
                  cflags: str = None,