[GH-ISSUE #987] Minor issue (compile fails with -Werror) #839

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opened 2026-02-28 01:27:17 +03:00 by kerem · 5 comments

kerem commented

2026-02-28 01:27:17 +03:00

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Originally created by @liebman on GitHub (Dec 31, 2019).
Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/987

The enable parameter is unused and if compiling where warnings are treated as errors this causes a failure.

github.com/tzapu/WiFiManager@c9665adfaf/WiFiManager.cpp (L2386-L2390)

Originally created by @liebman on GitHub (Dec 31, 2019). Original GitHub issue: https://github.com/tzapu/WiFiManager/issues/987 The `enable` parameter is unused and if compiling where warnings are treated as errors this causes a failure. https://github.com/tzapu/WiFiManager/blob/c9665adfaf4ef604e1926ab9a672cce2f485627a/WiFiManager.cpp#L2386-L2390

kerem

2026-02-28 01:27:17 +03:00

closed this issue
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kerem commented

2026-02-28 01:27:17 +03:00

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@Ruandv commented on GitHub (Jan 15, 2020):

@tablatronix what is the idea of the enable I see that it was added in Nov but i cant find a reason in the code to try and assist.

@Ruandv commented on GitHub (Jan 15, 2020): @tablatronix what is the idea of the enable I see that it was added in Nov but i cant find a reason in the code to try and assist.

kerem commented

2026-02-28 01:27:17 +03:00

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@JorgeTrincado commented on GitHub (Jan 22, 2020):

Hello! I have shown a little compilation problem (at WiFiManager.h:25:24) with the new version of ESP8266 Arduino core, which redefines HTTP_HEAD as "const char HTTP_HEAD []", maybe a refactor is required, but don't know how to solve it.

This is the complete console output

In file included from C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/sdk/libc/xtensa-lx106-elf/include/sys/stdio.h:6:0,

                 from C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/sdk/libc/xtensa-lx106-elf/include/stdio.h:63,

                 from C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3\cores\esp8266/Arduino.h:32,

                 from sketch\ESP8266WebConfig.ino.cpp:1:

C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/sdk/libc/xtensa-lx106-elf/include/sys/pgmspace.h:25:130: error: 'const char HTTP_HEAD []' redeclared as different kind of symbol

   #define PROGMEM __attribute__((section( "\".irom.text." __FILE__ "." __STRINGIZE(__LINE__) "."  __STRINGIZE(__COUNTER__) "\"")))

                                                                                                                                  ^

C:\Users\Jorge\Dropbox\ArduinoBasic\libraries\WiFiManager/WiFiManager.h:25:24: note: in expansion of macro 'PROGMEM'

 const char HTTP_HEAD[] PROGMEM            = "<!DOCTYPE html><html lang=\"en\"><head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1, user-scalable=no\"/><title>{v}</title>";

                        ^

In file included from C:\Users\Jorge\Dropbox\ArduinoBasic\libraries\Arduino-Library-master\src/ThingerWebConfig.h:30:0,

                 from C:\Users\Jorge\Dropbox\ArduinoBasic\libraries\Arduino-Library-master\examples\ESP8266\ESP8266WebConfig\ESP8266WebConfig.ino:2:

C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3\libraries\ESP8266WebServer\src/ESP8266WebServer.h:33:39: error: previous declaration of 'HTTPMethod HTTP_HEAD'

 enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_HEAD, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS };

                                       ^

exit status 1
Error compiling for board Generic ESP8285 Module.

Best!

@JorgeTrincado commented on GitHub (Jan 22, 2020): Hello! I have shown a little compilation problem (at WiFiManager.h:25:24) with the new version of ESP8266 Arduino core, which redefines HTTP_HEAD as "const char HTTP_HEAD []", maybe a refactor is required, but don't know how to solve it. This is the complete console output ``` In file included from C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/sdk/libc/xtensa-lx106-elf/include/sys/stdio.h:6:0, from C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/sdk/libc/xtensa-lx106-elf/include/stdio.h:63, from C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3\cores\esp8266/Arduino.h:32, from sketch\ESP8266WebConfig.ino.cpp:1: C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3/tools/sdk/libc/xtensa-lx106-elf/include/sys/pgmspace.h:25:130: error: 'const char HTTP_HEAD []' redeclared as different kind of symbol #define PROGMEM __attribute__((section( "\".irom.text." __FILE__ "." __STRINGIZE(__LINE__) "." __STRINGIZE(__COUNTER__) "\""))) ^ C:\Users\Jorge\Dropbox\ArduinoBasic\libraries\WiFiManager/WiFiManager.h:25:24: note: in expansion of macro 'PROGMEM' const char HTTP_HEAD[] PROGMEM = "<!DOCTYPE html><html lang=\"en\"><head><meta name=\"viewport\" content=\"width=device-width, initial-scale=1, user-scalable=no\"/><title>{v}</title>"; ^ In file included from C:\Users\Jorge\Dropbox\ArduinoBasic\libraries\Arduino-Library-master\src/ThingerWebConfig.h:30:0, from C:\Users\Jorge\Dropbox\ArduinoBasic\libraries\Arduino-Library-master\examples\ESP8266\ESP8266WebConfig\ESP8266WebConfig.ino:2: C:\Users\Jorge\AppData\Local\Arduino15\packages\esp8266\hardware\esp8266\2.6.3\libraries\ESP8266WebServer\src/ESP8266WebServer.h:33:39: error: previous declaration of 'HTTPMethod HTTP_HEAD' enum HTTPMethod { HTTP_ANY, HTTP_GET, HTTP_HEAD, HTTP_POST, HTTP_PUT, HTTP_PATCH, HTTP_DELETE, HTTP_OPTIONS }; ^ exit status 1 Error compiling for board Generic ESP8285 Module. ``` Best!

kerem commented

2026-02-28 01:27:17 +03:00

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@tablatronix commented on GitHub (Jan 22, 2020):

This is already fixed, don't post stuff where it doesn't belong please.

@tablatronix commented on GitHub (Jan 22, 2020): This is already fixed, don't post stuff where it doesn't belong please.

kerem commented

2026-02-28 01:27:18 +03:00

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@Ruandv commented on GitHub (Jan 22, 2020):

Should the issue not be marked as closed or fixed

@Ruandv commented on GitHub (Jan 22, 2020): Should the issue not be marked as closed or fixed

kerem commented

2026-02-28 01:27:18 +03:00

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@tablatronix commented on GitHub (Jan 22, 2020):

I was responding comment, not the issue. anyway its fixed now regardless

@tablatronix commented on GitHub (Jan 22, 2020): I was responding comment, not the issue. anyway its fixed now regardless