“未知类型名称‘解密’”：在mac上安装pyicu失败，gcc错误

Question

我运行了以下命令(因为我的mac上同时有python2和python3 )：

$CFLAGS=-i/usr/local/opt/icu4c/包括LDFLAGS=-L/usr/local/opt/icu4c/ sudo python3 -m pip install pyicu

错误信息如下：

安装收集的软件包:运行setup.py安装为pyicu .错误从命令/anaconda3 3/bin/python3 3 -u -c“导入setuptools，open)(file);code=f.read().replace('\r\n'，'open'，open)(file)；code=f.read().replace(‘\r\n’，‘\n’)；f.close()完成输出；exec(编译(代码，文件，'exec'))“安装-记录/tmp/pip-7298jccr-记录/安装-记录.tmp单一版本-外部管理-编译：

Building PyICU 2.0.3 for ICU 58.2

Adding CXXFLAGS="-I/anaconda3/include" from /anaconda3/bin/icu-config
Adding LDFLAGS="-Wl,-rpath,/anaconda3/lib -L/anaconda3/lib -licui18n -licuuc -licudata" from /anaconda3/bin/icu-config
running install
running build
running build_py
creating build
creating build/lib.macosx-10.7-x86_64-3.6
copying PyICU.py -> build/lib.macosx-10.7-x86_64-3.6
creating build/lib.macosx-10.7-x86_64-3.6/icu
copying icu/__init__.py -> build/lib.macosx-10.7-x86_64-3.6/icu
running build_ext
building '_icu' extension
creating build/temp.macosx-10.7-x86_64-3.6
gcc -Wno-unused-result -Wsign-compare -Wunreachable-code -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -I/anaconda3/include -arch x86_64 -I/anaconda3/include -arch x86_64 -I/anaconda3/include/python3.6m -c _icu.cpp -o build/temp.macosx-10.7-x86_64-3.6/_icu.o -DPYICU_VER="2.0.3" -I/anaconda3/include
In file included from _icu.cpp:27:
./common.h:38:13: error: unknown type name 'decltype'
    typedef decltype(nullptr) nullptr_t;
            ^
./common.h:38:30: error: expected ';' after top level declarator
    typedef decltype(nullptr) nullptr_t;
                             ^
                             ;
2 errors generated.
error: command 'gcc' failed with exit status 1

----------------------------------------

命令“/anaconda3 3/bin/python3 3 -u -c”导入setuptools，open)(file);code=f.read().replace('\r\n'，'open'，open)(file)；code=f.read().replace(‘\r\n’，'\n');f.close()；(编译(代码，文件，'exec'))“安装-记录/tmp/pip-7298jccr-记录/安装-记录-tmp单版本-外部管理-编译”失败，错误代码1在/私有/tmp/pip-构建-l71tm0m4/pyicu/

Answer 1

@n.m.认为，-std=c++11需要添加到CFLAGS中。