Using system headers rather than avr headers

[SandSnip3r]

I'm on Linux. Using Arduino-Makefile:
# Current version: 1.5.2

Here is my project directory makefile:

ARDUINO_IDE_INSTALLATION_PATH = /home/sandsnip3r/Downloads/arduino-1.8.1
# --- nano ide 1.6
BOARD_TAG   = nano
BOARD_SUB   = atmega328
ARDUINO_DIR = ${ARDUINO_IDE_INSTALLATION_PATH}
MONITOR_PORT = /dev/ttyUSB0
include /usr/share/arduino/Arduino.mk

Running the make with verbose output on, here's the order that it's using for header searching:

#include "..." search starts here:
#include <...> search starts here:
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/arduino/avr/cores/arduino
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/arduino/avr/variants/eightanaloginputs
 /usr/include
 .
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/include
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/include-fixed
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/../../../../avr/include

However, i get many errors like this:
/home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/avr/include/avr/pgmspace.h:1575:36: error: 'uint_farptr_t' has not been declared

At the top of pgmspace.h it has #include <inttypes.h>

Looking in /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/avr/include/inttypes.h, I see typedef uint32_t uint_farptr_t;

The problem is that, due to the include search path ordering, it uses /usr/include/inttypes.h rather than the avr header file because it was found first.

My solution ended up requiring a few extra lines in my project Makefile:

CFLAGS += -isystem ${ARDUINO_IDE_INSTALLATION_PATH}/hardware/tools/avr/avr/include
CXXFLAGS += -isystem ${ARDUINO_IDE_INSTALLATION_PATH}/hardware/tools/avr/avr/include

This resulted in the following ordering:

#include "..." search starts here:
#include <...> search starts here:
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/arduino/avr/cores/arduino
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/arduino/avr/variants/eightanaloginputs
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/avr/include
 /usr/include
 .
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/include
 /home/sandsnip3r/Downloads/arduino-1.8.1/hardware/tools/avr/bin/../lib/gcc/avr/4.9.2/include-fixed

[sej7278]

i can't reproduce this, my "#include search...." only looks within arduino-1.8.2/hardware/

what linux distro, where did you get arduino-mk from (git, debian, aur....), what does your Makefile look like, can we see full make output etc?