Makefile: some platforms do not have hstrerror anywhere

diff --git a/t/t4124-apply-ws-rule.sh b/t/t4124-apply-ws-rule.sh
index fb9ad247bf76c07a8b6dbbb0d6bf1ab830041770..bef3bcb1b241f85911a3661569a2973a71898d8c 100755 (executable)
--- a/t/t4124-apply-ws-rule.sh
+++ b/t/t4124-apply-ws-rule.sh
@@ -44,7 +44,7 @@ test_fix () {
        apply_patch --whitespace=fix || return 1
 
        # find touched lines
-       diff file target | sed -n -e "s/^> //p" >fixed
+       $DIFF file target | sed -n -e "s/^> //p" >fixed
 
        # the changed lines are all expeced to change
        fixed_cnt=$(wc -l <fixed)
@@ -85,14 +85,14 @@ test_expect_success setup '
 test_expect_success 'whitespace=nowarn, default rule' '
 
        apply_patch --whitespace=nowarn &&
-       diff file target
+       test_cmp file target
 
 '
 
 test_expect_success 'whitespace=warn, default rule' '
 
        apply_patch --whitespace=warn &&
-       diff file target
+       test_cmp file target
 
 '
 
@@ -108,7 +108,7 @@ test_expect_success 'whitespace=error-all, no rule' '
 
        git config core.whitespace -trailing,-space-before,-indent &&
        apply_patch --whitespace=error-all &&
-       diff file target
+       test_cmp file target
 
 '
 
@@ -117,7 +117,7 @@ test_expect_success 'whitespace=error-all, no rule (attribute)' '
        git config --unset core.whitespace &&
        echo "target -whitespace" >.gitattributes &&
        apply_patch --whitespace=error-all &&
-       diff file target
+       test_cmp file target
 
 '