From 961f5e32855d9d8f0d48e5c6278e44d9b9ccdfcb Mon Sep 17 00:00:00 2001
From: Mark Pizzolato <mark@infocomm.com>
Date: Tue, 8 May 2018 02:37:36 -0700
Subject: [PATCH] makefile: query C compiler for its default include paths.

---
 makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/makefile b/makefile
index af6860a4..d6a841d4 100644
--- a/makefile
+++ b/makefile
@@ -232,7 +232,10 @@ ifeq ($(WIN32),)  #*nix Environments (&& cygwin)
     OS_LDFLAGS = -lm
   else # Non-Android Builds
     ifeq (,$(INCLUDES)$(LIBRARIES))
-      INCPATH:=/usr/include
+      INCPATH:=$(shell LANG=C; $(GCC) -x c -v -E /dev/null 2>&1 | grep -A 10 '> search starts here' | grep '^ ' | tr -d '\n')
+      ifeq (,$(INCPATH))
+        INCPATH:=/usr/include
+      endif
       LIBPATH:=/usr/lib
     else
       $(info *** Warning ***)