Multiple Libraries Found... Major Problem

Development Tools IDE 1.x
1

My Program Did not compile and gave me error like this

Arduino: 1.8.10 (Windows 10), Board: "Arduino/Genuino Uno"

Tone.cpp.o (symbol from plugin): In function `timer0_pin_port':

(.text+0x0): multiple definition of `__vector_7'

libraries\IRremote\IRremote.cpp.o (symbol from plugin):(.text+0x0): first defined here

collect2.exe: error: ld returned 1 exit status

Multiple libraries were found for "IRremote.h"
Used: C:\Program
exit status 1
Error compiling for board Arduino/Genuino Uno.

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2

Problem is not multiple libraries found - it is using the correct version of the library (you get a different compile error if it's using the wrong version)

Problem is that Tone and IRremote library are not compatible - they both need full control over timer1 to operate.

I think people have written libraries to generate a tone using Timer2, search around. These libraries probably don't have as much resolution with regards to the frequencies they can generate; timer1 is a more capable timer (16-bit vs 8-bit for timer2).