I am triing to compile a sketch that call time.h library ( downloaded from https://github.com/PaulStoffregen/Time

During compilation new files ( time.cpp.o and time.cpp.d ) are created and then it give error because the functions  have a multiple definition :
in the original time.cpp and in the created time.cpp.o!

I never saw a similar error using Arduino IDE!

Why new new files are created?
What I can do to fix this error?

Thank for your reply!
The compilation source is quite large!

I will start with a copy of the error printout:
Compiling debug version of 'interval_program_v2' for 'Arduino/Genuino Mega w/ ATmega2560 (Mega 2560)'
Time.cpp.o:In function `breakTime(unsigned long, tmElements_t&)
Time.cpp:multiple definition of `breakTime(unsigned long, tmElements_t&)
Time.cpp.o:d:\users\pbecc\onedrive\Arduino\libraries\Time\Time.cpp:151: first defined here
ld.exe:Disabling relaxation: it will not work with multiple definitions
Time.cpp.o:In function `breakTime(unsigned long, tmElements_t&)
Time.cpp.o:In function `breakTime(unsigned long, tmElements_t&)
Time.cpp:multiple definition of `setSyncInterval(unsigned long)
Time.cpp.o:d:\users\pbecc\onedrive\Arduino\libraries\Time\Time.cpp:151: first defined here
collect2.exe*:error: ld returned 1 exit status
Error creating .elf

In addition after compilation I have to manually delete files time.cpp.o and time.cpp.d from library folder.

Running library example Time Serial give following error:

Compiling debug version of 'TimeSerial' for 'Arduino/Genuino Mega w/ ATmega2560 (Mega 2560)'
TimeSerial.ino:9:1: error: 'time_t' does not name a type
:time_t requestSync()
TimeSerial.ino:In function 'void setup()
TimeSerial.ino:22:18: error: 'requestSync' was not declared in this scope
:setSyncProvider( requestSync)

Both compilation run on IDE 1.6.5. and a older version of time.h library don't give these errors!

I am lost!

The link for the new  library is: github.com/PaulStroffegen/time 

The old library can be found here: 
https://github.com/Dave1001/OpenSprinkler-Arduino/tree/master/OpenSprinkler_Ardu...

I have installed Visual Studio and Visual Micro only few days ago!

Thanks for your help!

This is what I get with verbose=true:
file .txt attached

Thanks!

Thank you so much!
I removed the library source from the explorer and ... compilation was OK!!
Simple.....now that I know!

Thanks again......
...but I need another little help:

I need to compile the library also for a different board: NodeMCU ESP8266.

I am using the library example "TimeNPT_ESP8266WiFi"
The compilation work well using   IDE 1.6.5
but with VisualMicro give :

f-gcc\1.20.0-26-gb404fb9-2/bin/xtensa-lx106-elf-gcc" -D__ets__ -DICACHE_FLASH -U__STRICT_ANSI__ 0.0-rc2/tools/sdk/include" -c -Os -g -Wpointer-arith -Wno-implicit-function-declaration -Wl,-EL -fno-inline-functions -nostdlib -mlongcalls -mtext-section-literals -falign-functions=4 -MMD -std=gnu99 -ffunction-sections -fdata-sections -DF_CPU=80000000L -DARDUINO=165 -DARDUINO_ESP8266_ESP12 -DARDUINO_ARCH_ESP8266 -DESP8266 -I"D:\Users\pbecc\OneDrive\Arduino\libraries\Time\examples\TimeNTP_ESP8266WiFi" 0.0-rc2\cores\esp8266" 0.0-rc2\variants\nodemcu" 0.0-rc2\libraries\ESP8266WiFi\src" -I"d:\users\pbecc\onedrive\Arduino\libraries\Time" -I"D:\Program Files\VisualStudio\Common7\IDE\Extensions\lvqhzc5c.5em\Micro Platforms\default\debuggers\VM_DBG" -I"d:\Program Files\Arduino\libraries" 0.0-rc2\libraries" -I"D:\Program Files\VisualStudio\Common7\IDE\Extensions\lvqhzc5c.5em\Micro Platforms\default\debuggers" -I"d:\users\pbecc\onedrive\Arduino\libraries" 0-rc2\cores\esp8266\time.c" -o v2\time.c.o" -DVM_DEBUG -DVM_DEBUG_ENABLE=1 -DVM_DEBUG_BANDWIDTH_THROTTLE_MS=100 -DVM_DEBUGGER_TYPE_HARDWARESERIAL=0 -DVM_DEBUGGER_TYPE_SOFTWARESERIAL=1 -DVM_DEBUGGER_TYPE_FASTSERIAL=2 -DVM_DEBUGGER_TYPE_USB=3 -DVM_DEBUGGER_TYPE_TEENSY=4 -DVM_DEBUGGER_TYPE_UART=5 -DVM_DEBUGGER_TYPE_USART=6 -DVM_DEBUGGER_TYPE_USBSERIAL=7 -DVM_DEBUGGER_TYPE_TTYUART=8 -DVM_DEBUGGER_TYPE_NET_CONSOLE=9 -DVM_DEBUGGER_TYPE_Uart=10 -DVM_DEBUGGER_TYPE_COSA=11 -DVM_DEBUGGER_TYPE=VM_DEBUGGER_TYPE_HARDWARESERIAL
os_type.h:In file included from
sntp.h:from
time.c:from
ets_sys.h:148:20: error: unknown type name 'size_t

Error compiling core

Hello and....

Merry Christmas!

We have identical configuration :

-I use same board url
-I also have available two MCU board 0.9 and 1.0.
-I have opened the example ino and nothing else from the example directory.

The only possible difference is that my IDE  1.6.5 and ESP board support  (using IDE board manager) were already installed at the time I have installed Visual Micro.

Thanks again!

Hello again,

Here attached the two verbose output you were asking! 

thanks!

Paolo

Thanks for the info.

I think the problem was a bug which I hope was fixed in the last couple of releases. 

The library paths were passed as include during compilation of the esp core. The esp core has a time.h and I expect that gets confused with the time library.

Please update to the latest version of visual micro and see if that fixes it.

Thanks