Error verifying code

[ThomasFH]

Hi,

I am new to arduino and I am just trying the example sketch "Blinking Led"

const int LED = 13; //led connected to digital  pin 13
void setup()
{
  pinMode(LED, OUTPUT); //sets teh digital pin as output
}

void loop() {
  digitalWrite(LED, HIGH); //turns the led on
  delay(1000); //waits for a second
  digitalWrite(LED, LOW); //turns the led off
  delay(1000); //waits for a second
}

I get the following error:

/Applications/Arduino 3.app/Contents/Java/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/../../../../avr/bin/ld: /Applications/Arduino 3.app/Contents/Java/hardware/tools/avr/bin/../libexec/gcc/avr/4.9.2/liblto_plugin.so: error loading plugin: dlopen(/Applications/Arduino 3.app/Contents/Java/hardware/tools/avr/bin/../libexec/gcc/avr/4.9.2/liblto_plugin.so, 2): Symbol not found: _environ
Referenced from: /Applications/Arduino 3.app/Contents/Java/hardware/tools/avr/bin/../libexec/gcc/avr/4.9.2/liblto_plugin.so
Expected in: /usr/lib/libSystem.B.dylib

collect2: error: ld returned 1 exit status
exit status 1
Error compiling for board Arduino/Genuino Uno.

I am using a Mac with OSX 10.7.5 and Arduino 1.8.5

Any suggestions to solve this?

[pert]

The problem is that your version of OSX is too old for the version of Arduino AVR Boards you're using:

Compilation fails on OSX 10.7.5, complaining about liblto_plugin.so and libSystem.B.dylib

You have two options: Update your OSX or use an older version of Arduino AVR Boards.

Here's how to do the latter:

• Tools > Board > Boards Manager
• Wait for the download to finish
• Click on Arduino AVR Boards
• Select "1.6.11" from the "select version" drop down menu"
• Click "Install"
• Wait for installation to finish
• Click "Close"

This is related to a compiler update in Arduino AVR Boards 1.6.12, that's why installing 1.6.11 will fix it. You will need to avoid upgrading to any Arduino AVR Boards version above 1.6.11.