Patch 4-OCI DRCP Makefile (#214)

* Create makefile

Makefile for the Oracle Call Interface samples

* Placeholder for makefile

* Add DRCP code related changes to makefile

* Added Copyright and Year

Author: sharadraju

C/makefile

@@ -0,0 +1,18 @@
+# Copyright (c) 2022, Oracle. All rights reserved.
+# Makefile for Oracle OCI Database Resident Connection Pooling (DRCP) Example
+# Christopher Jones, 2022
+
+IC=$(HOME)/instantclient_19_11
+OLIB=$(IC)
+OINC=$(IC)/sdk/include
+
+#OH=/u01/app/oracle/product/12.1.0/dbhome_1
+#OLIB=$(OH)/lib
+#OINC=$(OH)/rdbms/public
+
+drcp: clean
+	$(CC) -Wall -Wextra -c -I$(OINC) drcp.c
+	$(CC) -o drcp drcp.o -Wl,--rpath -Wl,$(OLIB) -L$(OLIB) -lclntsh
+
+clean:
+	rm -f drcp.o drcp