diff -u -r ../unzip60/unix/configure ./unix/configure
--- ../unzip60/unix/configure 2009-04-16 21:25:12.000000000 +0200
-+++ ./unix/configure 2017-07-07 02:49:13.106298790 +0200
-@@ -418,7 +370,9 @@
- [ $? -ne 0 ] && CFLAGSR="${CFLAGSR} -DNO_ERRNO"
++++ ./unix/configure 2017-07-07 08:46:56.815279304 +0200
+@@ -401,8 +401,8 @@
+ rm -f "${temp_file}"
+
+ echo Check for memset
+-echo "int main(){ char k; memset(&k,0,0); return 0; }" > conftest.c
+-$CC -o conftest conftest.c >/dev/null 2>/dev/null
++printf "#include <string.h>\nint main(){ char k; memset(&k,0,0); return 0; }" > conftest.c
++$CC -o conftest conftest.c >/dev/null
+ [ $? -ne 0 ] && CFLAGSR="${CFLAGSR} -DZMEM"
+
+ echo Check for errno declaration
+@@ -419,6 +419,8 @@
echo Check for directory libraries
cat > conftest.c << _EOF_