build: Don't require $(OUT) to be a sub-directory of the main directory.

Remove references to "../" and "out/" from the build so that "make
OUT=/a/b/c/" will work.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
diff --git a/Makefile b/Makefile
index a482c94..20da6d0 100644
--- a/Makefile
+++ b/Makefile
@@ -84,7 +84,7 @@
 ################ Common build rules
 
 # Verify the build environment works.
-TESTGCC:=$(shell CC="$(CC)" LD="$(LD)" IASL="$(IASL)" tools/test-build.sh)
+TESTGCC:=$(shell OUT="$(OUT)" CC="$(CC)" LD="$(LD)" IASL="$(IASL)" tools/test-build.sh)
 ifeq "$(TESTGCC)" "-1"
 $(error "Please upgrade the build environment")
 endif
@@ -97,7 +97,7 @@
 # Do a whole file compile by textually including all C code.
 define whole-compile
 @echo "  Compiling whole program $3"
-$(Q)printf '$(foreach i,$2,#include "../$i"\n)' > $3.tmp.c
+$(Q)printf '$(foreach i,$2,#include "$(CURDIR)/$i"\n)' > $3.tmp.c
 $(Q)$(CC) $1 $(CFLAGSWHOLE) -c $3.tmp.c -o $3
 endef
 
diff --git a/src/Kconfig b/src/Kconfig
index 0b112ed..2c9100d 100644
--- a/src/Kconfig
+++ b/src/Kconfig
@@ -367,7 +367,7 @@
             Support generation of ACPI tables.
 endmenu
 
-source ../vgasrc/Kconfig
+source vgasrc/Kconfig
 
 menu "Debugging"
     config DEBUG_LEVEL
diff --git a/tools/test-build.sh b/tools/test-build.sh
index 7bd6d1f..ce0aca9 100755
--- a/tools/test-build.sh
+++ b/tools/test-build.sh
@@ -14,13 +14,13 @@
     exit 0
 fi
 
-mkdir -p out
-TMPFILE1=out/tmp_testcompile1.c
-TMPFILE1o=out/tmp_testcompile1.o
-TMPFILE1_ld=out/tmp_testcompile1.lds
-TMPFILE2=out/tmp_testcompile2.c
-TMPFILE2o=out/tmp_testcompile2.o
-TMPFILE3o=out/tmp_testcompile3.o
+mkdir -p ${OUT}
+TMPFILE1=${OUT}/tmp_testcompile1.c
+TMPFILE1o=${OUT}/tmp_testcompile1.o
+TMPFILE1_ld=${OUT}/tmp_testcompile1.lds
+TMPFILE2=${OUT}/tmp_testcompile2.c
+TMPFILE2o=${OUT}/tmp_testcompile2.o
+TMPFILE3o=${OUT}/tmp_testcompile3.o
 
 # Test if ld's alignment handling is correct.  This is a known problem
 # with the linker that ships with Ubuntu 11.04.