Hello, 
I am new user to Visual Micro that I have installed on VS 2015 Community and I start to prove some Arduino Apps over Intel Galileo 2 board. 

I can't compile anything that uses a library, but the same code works correctly with Arduino 1.6.7 editor, that compile and upload to device without problem. Also works correct without library (as the basic blink example).

With Visual Micro I always get from the compiler, that "fatal error: Wire.h: No such file or directory", (or Ethernet.h, or whatever library .h I use). 

The IDE recognizes the .h, so it can open it, and recognize the Intellisense, but nothing with the compiler. The libraries are present (as the Arduino IDE compile without problem).

There is the verbose output I receive from the last lines on compilation: 

...
Core Include Paths
Include Path \cores\arduino'
Include Path \variants\galileo_fab_g'
Library Include Paths (1)
+"  -m32 -march=i586 ky-linux-uclibc\1.6.2+1.0/i586-poky-linux-uclibc" -c -g -Os -w -fno-exceptions -ffunction-sections -fdata-sections -D__ARDUINO_X86__ -Xassembler -mquark-strip-lock=yes -w -x c++ -E -CC -DF_CPU=-m32 -DARDUINO=10607 -DARDUINO_GALILEOGEN2 -DARDUINO_ARCH_I586        .0\cores\arduino" .0\variants\galileo_fab_g" -I"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers\VM_DBG" -I"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers" _izmir_fg\EjemploArduinoBlink.cpp" -o "nul"
All import libraries will be re-compiled
Build Core Paths: cores\arduino
Using library VM_DBG version 0.0.0 in folder C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers\VM_DBG
+" -m32 -march=i586 ky-linux-uclibc\1.6.2+1.0/i586-poky-linux-uclibc" -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -MMD -D__ARDUINO_X86__ -Xassembler -mquark-strip-lock=yes -march=i586 -m32 -DARDUINO=10607 .0\cores\arduino" .0\variants\galileo_fab_g" -I"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers\VM_DBG" -I"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers" -I"C:\Program Files (x86)\Arduino\libraries" .0\libraries" -I"C:\Users\ruperez\Documents\Arduino\libraries" "C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers\VM_DBG\VM_DBG.cpp" -o _izmir_fg\VM_DBG\VM_DBG.cpp.o" -DVM_DEBUG -DVM_DEBUG_ENABLE=1 -DVM_DEBUG_BANDWIDTH_THROTTLE_MS=50 -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_CDCSerialClass=12 -DVM_DEBUGGER_TYPE=VM_DEBUGGER_TYPE_TTYUART -DVM_DEBUG_BREAKPAUSE
+" -m32 -march=i586 ky-linux-uclibc\1.6.2+1.0/i586-poky-linux-uclibc" -c -g -Os -Wall -fno-exceptions -ffunction-sections -fdata-sections -MMD -D__ARDUINO_X86__ -Xassembler -mquark-strip-lock=yes -march=i586 -m32 -DARDUINO=10607 .0\cores\arduino" .0\variants\galileo_fab_g" -I"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers\VM_DBG" -I"C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\Extensions\y1rpun5w.a4j\Micro Platforms\default\debuggers" -I"C:\Program Files (x86)\Arduino\libraries" .0\libraries" -I"C:\Users\ruperez\Documents\Arduino\libraries" _izmir_fg\EjemploArduinoBlink.cpp" -o _izmir_fg\EjemploArduinoBlink.cpp.o" -DVM_DEBUG -DVM_DEBUG_ENABLE=1 -DVM_DEBUG_BANDWIDTH_THROTTLE_MS=50 -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_CDCSerialClass=12 -DVM_DEBUGGER_TYPE=VM_DEBUGGER_TYPE_TTYUART -DVM_DEBUG_BREAKPAUSE
EjemploArduinoBlink.ino:3:18: fatal error: Wire.h: No such file or directory
:compilation terminated
Error compiling project sources
 

Thanks very much in advance. 

Ruben

Thanks very much, very fast and good answer, it works now.

Ruben