-+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_
-+#include <sys/types.h>
-+#include <dirent.h>
- int main() { return closedir(opendir(".")); }
- _EOF_
+-[ $? -ne 0 ] && CFLAGSR="${CFLAGSR} -DZMEM"
+-
+-echo Check for errno declaration
+-cat > conftest.c << _EOF_
+-#include <errno.h>
+-main()
+-{
+- errno = 0;
+- return 0;
+-}
+-_EOF_
+-$CC $CFLAGS -c conftest.c >/dev/null 2>/dev/null
+-[ $? -ne 0 ] && CFLAGSR="${CFLAGSR} -DNO_ERRNO"
+-
+-echo Check for directory libraries
+-cat > conftest.c << _EOF_
+-int main() { return closedir(opendir(".")); }
+-_EOF_
+-
+-$CC -o conftest conftest.c >/dev/null 2>/dev/null
+-if [ $? -ne 0 ]; then
+- OPT=""
+- for lib in ndir dir ucb bsd BSD PW x dirent
+- do
+- $CC -o conftest conftest.c -l$lib >/dev/null 2>/dev/null
+- [ $? -eq 0 ] && OPT=-l$lib && break
+- done
+- if [ ${OPT} ]; then
+- LFLAGS2="${LFLAGS2} ${OPT}"
+- else
+- CFLAGSR="${CFLAGSR} -DNO_DIR"
+- fi
+-fi
+-
+-# Dynix/ptx 1.3 needed this
+-echo Check for readlink
+-echo "int main(){ return readlink(); }" > conftest.c
+-$CC -o conftest conftest.c >/dev/null 2>/dev/null
+-if [ $? -ne 0 ]; then
+- $CC -o conftest conftest.c -lseq >/dev/null 2>/dev/null
+- [ $? -eq 0 ] && LFLAGS2="${LFLAGS2} -lseq"
+-fi