Question

我正在尝试使用scons编译带有-std = c = + 11选项的c ++文件。

文件：test.cc

#include <unordered_map>

int foo()
{ return 0; }

文件：SConstruct

env = Environment()
env.Append(CXXFLAGS = '-std=c++11')
#print env['CXXFLAGS']

src_files = Split('test.cc')
lib_name = 'test'

Library(lib_name, src_files)

我收到以下错误。调用g ++时，CXXFLAGS似乎没有生效：

g++ -o test.o -c test.cc
In file included from /usr/include/c++/4.8.2/unordered_map:35:0,
                 from test.cc:2:
/usr/include/c++/4.8.2/bits/c++0x_warning.h:32:2: error: #error This file requires compiler and library support for the ISO C++ 2011 standard. This support is currently experimental, and must be enabled with the -std=c++11 or -std=gnu++11 compiler options.
 #error This file requires compiler and library support for the \
  ^
scons: *** [test.o] Error 1

我已经阅读了一些关于使用-std = c ++ 11选项编译c ++文件的帖子，修改了“构建环境”，我觉得我已经完成了。有人可以帮忙。

谢谢你，艾哈迈德。

Answer 1

使用env.Library代替Library来构建具有构建环境的库。

env = Environment()
env.Append(CXXFLAGS = '-std=c++11')

src_files = Split('test.cc')
lib_name = 'test'

env.Library(lib_name, src_files)

使用scons编译带有-std = c ++ 11标志的c ++文件

1 个答案: