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Compilation error: 'const char HTTP_HEAD []' redeclared as different kind of entity #13

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@huster-songtao

ESP01-S
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In file included from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\assert.h:10,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\sys\reent.h:503,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\stdlib.h:18,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\c++\10.3.0\cstdlib:75,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\c++\10.3.0\stdlib.h:36,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2/tools/sdk/lwip2/include/gluedebug.h:33,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2/tools/sdk/lwip2/include/lwipopts.h:60,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2/tools/sdk/lwip2/include/lwip/opt.h:51,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2/tools/sdk/lwip2/include/lwip/init.h:40,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/wl_definitions.h:72,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\ESP8266WiFi\src/ESP8266WiFi.h:28,
from D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.h:16,
from D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.cpp:13:
D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.h:25:24: error: 'const char HTTP_HEAD []' redeclared as different kind of entity
25 | const char HTTP_HEAD[] PROGMEM = "<html lang="en"><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/><title>{v}</title>";
| ^~~~~~~
In file included from D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.h:17,
from D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.cpp:13:
C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\ESP8266WebServer\src/ESP8266WebServer.h:47:39: note: previous declaration 'HTTPMethod HTTP_HEAD'
47 | enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_HEAD, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };
| ^~~~~~~~~
In file included from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\assert.h:10,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\sys\reent.h:503,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\stdlib.h:18,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\c++\10.3.0\cstdlib:75,
from c:\users\tao\appdata\local\arduino15\packages\esp8266\tools\xtensa-lx106-elf-gcc\3.1.0-gcc10.3-e5f9fec\xtensa-lx106-elf\include\c++\10.3.0\stdlib.h:36,
from C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\cores\esp8266/Arduino.h:27,
from C:\Users\tao\AppData\Local\Temp\arduino\sketches\E1490BC81EF3A378C854B272CB450E96\sketch\neopixel.ino.cpp:1:
D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.h:25:24: error: 'const char HTTP_HEAD []' redeclared as different kind of entity
25 | const char HTTP_HEAD[] PROGMEM = "<html lang="en"><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no"/><title>{v}</title>";
| ^~~~~~~
In file included from D:\ADRIK\docs\github\neopixel\firmware\neopixel\WiFiManager.h:17,
from D:\ADRIK\docs\github\neopixel\firmware\neopixel\neopixel.ino:5:
C:\Users\tao\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\3.1.2\libraries\ESP8266WebServer\src/ESP8266WebServer.h:47:39: note: previous declaration 'HTTPMethod HTTP_HEAD'
47 | enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_HEAD, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };
| ^~~~~~~~~
D:\ADRIK\docs\github\neopixel\firmware\neopixel\neopixel.ino:12:24: error: 'D3' was not declared in this scope
12 | #define PIN D3
| ^~
D:\ADRIK\docs\github\neopixel\firmware\neopixel\neopixel.ino:29:54: note: in expansion of macro 'PIN'
29 | Adafruit_NeoPixel pixels = Adafruit_NeoPixel(PIXELS, PIN, NEO_GRB + NEO_KHZ800);
| ^~~

exit status 1

Compilation error: 'const char HTTP_HEAD []' redeclared as different kind of entity

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