From 1f1f174ed3ca28bdf8bbb479eb1d948d934dcc53 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Wed, 17 Feb 2021 13:38:55 -0800
Subject: [PATCH] setup.py: Do not mix C and C++ compiler options

EXTRA_ENV_COMPILE_ARGS is used both with CC and CXX
so using -std=c++11 or -std=gnu99 together will cause
build time errors espcially with clang

Keep '-std=c++11' to fix native build error
with old gcc (such as gcc 5.4.0 on ubuntu 16.04), for clang
we will remove them through GRPC_PYTHON_CFLAGS at do_compile
in bb recipe.

While export CC="gcc ", cc_args is None, it will
cause subprocess.Popen always return 1. On centos 8, if you don't
install package libatomic, there will be a native build error
`cannot find /usr/lib64/libatomic.so.1.2.0'.

Add no harm '-g' to cc_args if cc_args is empty.

Upstream-Status: Inappropriate [oe specific]

Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
 setup.py | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/setup.py b/setup.py
index ff27e67..964baf4 100644
--- a/setup.py
+++ b/setup.py
@@ -90,9 +90,11 @@ def check_linker_need_libatomic():
         b"#include <atomic>\n"
         + b"int main() { return std::atomic<int64_t>{}; }"
     )
-    cxx = os.environ.get("CXX", "c++")
-    cpp_test = subprocess.Popen(
-        [cxx, "-x", "c++", "-std=c++17", "-"],
+    cxx, cxx_args = os.environ.get('CXX').split(' ', 1) or 'c++'
+    if not cxx_args:
+      cxx_args = "-g"
+
+    cpp_test = subprocess.Popen([cxx, cxx_args, '-x', 'c++', '-std=c++17', '-'],
         stdin=PIPE,
         stdout=PIPE,
         stderr=PIPE,
@@ -103,7 +105,7 @@ def check_linker_need_libatomic():
     # Double-check to see if -latomic actually can solve the problem.
     # https://github.com/grpc/grpc/issues/22491
     cpp_test = subprocess.Popen(
-        [cxx, "-x", "c++", "-std=c++17", "-", "-latomic"],
+        [cxx, cxx_args, '-x', 'c++', '-std=c++17', '-', '-latomic'],
         stdin=PIPE,
         stdout=PIPE,
         stderr=PIPE,
