From c13c73f1ae93c4d33458fa050953d6675f4e269d Mon Sep 17 00:00:00 2001
From: Paul Mackerras <paulus@ozlabs.org>
Date: Fri, 3 Apr 2020 13:46:36 +1100
Subject: [PATCH] tests: Adjust header inclusions and Makefile.test

This fixes the decrementer, illegal and sc tests to compile
successfully with cross-compilers that don't provide unistd.h
or string.h.  Instead of those headers we include stddef.h.

This also fixes tests/Makefile.test to do what one expects
when CROSS_COMPILE is defined in the environment.

Signed-off-by: Paul Mackerras <paulus@ozlabs.org>
---
 tests/Makefile.test             | 2 +-
 tests/decrementer/decrementer.c | 3 +--
 tests/illegal/illegal.c         | 3 +--
 tests/sc/sc.c                   | 3 +--
 4 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/tests/Makefile.test b/tests/Makefile.test
index a043810..9676370 100644
--- a/tests/Makefile.test
+++ b/tests/Makefile.test
@@ -1,7 +1,7 @@
 ARCH = $(shell uname -m)
 ifneq ("$(ARCH)", "ppc64")
 ifneq ("$(ARCH)", "ppc64le")
-        CROSS_COMPILE = powerpc64le-linux-
+        CROSS_COMPILE ?= powerpc64le-linux-
         endif
         endif
 
diff --git a/tests/decrementer/decrementer.c b/tests/decrementer/decrementer.c
index 36ac922..2617a94 100644
--- a/tests/decrementer/decrementer.c
+++ b/tests/decrementer/decrementer.c
@@ -1,5 +1,4 @@
-#include <unistd.h>
-#include <string.h>
+#include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
 
diff --git a/tests/illegal/illegal.c b/tests/illegal/illegal.c
index 0778ffe..a1ea325 100644
--- a/tests/illegal/illegal.c
+++ b/tests/illegal/illegal.c
@@ -1,5 +1,4 @@
-#include <unistd.h>
-#include <string.h>
+#include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>
 
diff --git a/tests/sc/sc.c b/tests/sc/sc.c
index 67d80b9..2914291 100644
--- a/tests/sc/sc.c
+++ b/tests/sc/sc.c
@@ -1,5 +1,4 @@
-#include <unistd.h>
-#include <string.h>
+#include <stddef.h>
 #include <stdint.h>
 #include <stdbool.h>