是否可以将ESP8266与Arduino封装一起使用map？
这是我的代码:
#include <map>
typedef std::map<int, int> Items;
void setup() {
Items items;
items[2]=5;
//items.emplace(4,5);
}
void loop() {
}
这是编译/链接错误:
Arduino: 1.6.5 (Windows 8.1), Board: "Generic ESP8266 Module, Serial, 80 MHz, 40MHz, DIO, 115200, 512K (64K SPIFFS)"
sketch_oct31a.cpp.o: In function `loop':
C:\Program Files (x86)\Arduino/sketch_oct31a.ino:11: undefined reference to `std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)'
sketch_oct31a.cpp.o: In function `_M_emplace_hint_unique<const std::piecewise_construct_t&, std::tuple<int&&>, std::tuple<> >':
c:\users\user\appdata\roaming\arduino15\packages\esp8266\tools\xtensa-lx106- elf-gcc\1.20.0-26-gb404fb9-2\xtensa-lx106- elf\include\c++\4.8.2\bits/stl_tree.h:1673: undefined reference to `std::_Rb_tree_insert_and_rebalance(bool, std::_Rb_tree_node_base*, std::_Rb_tree_node_base*, std::_Rb_tree_node_base&)'
sketch_oct31a.cpp.o: In function `std::_Rb_tree<int, std::pair<int const, int>, std::_Select1st<std::pair<int const, int> >, std::less<int>, std::allocator<std::pair<int const, int> > >::_M_erase(std::_Rb_tree_node<std::pair<int const, int> >*)':
c:\users\user\appdata\roaming\arduino15\packages\esp8266\tools\xtensa-lx106- elf-gcc\1.20.0-26-gb404fb9-2\xtensa-lx106- elf\include\c++\4.8.2\bits/stl_tree.h:1130: undefined reference to `std::_Rb_tree_decrement(std::_Rb_tree_node_base*)'
sketch_oct31a.cpp.o: In function `std::_Rb_tree_iterator<std::pair<int const, int> >::operator--()':
c:\users\user\appdata\roaming\arduino15\packages\esp8266\tools\xtensa-lx106- elf-gcc\1.20.0-26-gb404fb9-2\xtensa-lx106- elf\include\c++\4.8.2\bits/stl_tree.h:204: undefined reference to `std::_Rb_tree_decrement(std::_Rb_tree_node_base*)'
sketch_oct31a.cpp.o: (.text._ZNSt8_Rb_treeIiSt4pairIKiiESt10_Select1stIS2_ESt4lessIiESaIS2_EE29_M_get _insert_hint_unique_posESt23_Rb_tree_const_iteratorIS2_ERS1_[_ZNSt8_Rb_treeIiSt4 pairIKiiESt10_Select1stIS2_ESt4lessIiESaIS2_EE29_M_get_insert_hint_unique_posESt 23_Rb_tree_const_iteratorIS2_ERS1_]+0x0): undefined reference to `std::_Rb_tree_increment(std::_Rb_tree_node_base*)'
sketch_oct31a.cpp.o: In function `std::_Rb_tree<int, std::pair<int const, int>, std::_Select1st<std::pair<int const, int> >, std::less<int>, std::allocator<std::pair<int const, int> > >::_M_get_insert_hint_unique_pos(std::_Rb_tree_const_iterator<std::pair<int const, int> >, int const&)':
c:\users\user\appdata\roaming\arduino15\packages\esp8266\tools\xtensa-lx106- elf-gcc\1.20.0-26-gb404fb9-2\xtensa-lx106-elf\include\c++\4.8.2\bits/stl_tree.h:1431: undefined reference to `std::_Rb_tree_decrement(std::_Rb_tree_node_base*)'
c:\users\user\appdata\roaming\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\1.20.0-26-gb404fb9-2\xtensa-lx106-elf\include\c++\4.8.2\bits/stl_tree.h:1448: undefined reference to `std::_Rb_tree_increment(std::_Rb_tree_node_base*)'
collect2.exe: error: ld returned 1 exit status
Error compiling.
我从这里拿了那个包裹:https://github.com/esp8266/Arduino
顺便说一句，ESP8266的其他任何东西都可以编译。
提前致谢
最佳答案
标准ESP8266设置未链接到libstdc++，后者提供map和其他std namespace 代码。
您需要在ESP8266 Arudino文件夹的根目录中编辑platforms.txt(此文件夹的位置取决于安装该文件夹的位置以及所使用的操作系统)-并将-lstdc++添加到以下行:
compiler.c.elf.libs=-lm -lgcc -lhal -lphy -lnet80211 -llwip -lwpa -lmain -lpp -lsmartconfig -lwps -lcrypto -laxtls
Arduino IDE 在启动时仅读取一次此文件，因此，请确保在编译之前重新启动IDE。
关于c++ - 用于Arduino IDE的ESP8266(xtensa-lx106-elf-gcc)和std::map链接错误，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/33450946/