Improve dependency libs during linking based on components enabled - resolves link errors on missing libs when a component is disabled.

Data/ODBC/Makefile

@@ -15,7 +15,7 @@
 include $(POCO_BASE)/build/rules/global
 
 ifeq ($(POCO_CONFIG),MinGW)
-SYSLIBS += -lodbc32
+# Lack of unixODBC or iODBC is not an error for MinGW platform since it uses Windows odbc32.lib
 else
 ifeq (0, $(shell test -e /usr/lib/libodbc$(SHAREDLIBLINKEXT); echo $$?))
 SYSLIBS += -lodbc -lodbcinst

Data/ODBC/testsuite/Makefile

@@ -14,6 +14,9 @@
 
 include $(POCO_BASE)/build/rules/global
 
+ifeq ($(POCO_CONFIG),MinGW)
+# Lack of unixODBC or iODBC is not an error for MinGW platform since it uses Windows odbc32.lib
+else
 ifeq (0, $(shell test -e /usr/lib/libodbc$(SHAREDLIBLINKEXT); echo $$?))
 SYSLIBS += -lodbc -lodbcinst
 COMMONFLAGS += -DPOCO_UNIXODBC
@@ -25,10 +28,14 @@ else
 $(error No ODBC library found. Please install unixODBC or iODBC and try again)
 endif
 endif
+endif
 
 objects = ODBCTestSuite Driver \
 	ODBCDB2Test ODBCMySQLTest ODBCOracleTest ODBCPostgreSQLTest \
 	ODBCSQLiteTest ODBCSQLServerTest ODBCTest SQLExecutor
+ifeq ($(POCO_CONFIG),MinGW)
+    objects += ODBCAccessTest
+endif
 
 target         = testrunner
 target_version = 1

build/config/MinGW

@@ -71,4 +71,13 @@ SYSFLAGS = -mno-cygwin -D_WIN32 -DMINGW32 -DWINVER=0x500 -DODBCVER=0x0300 -DPOCO
 #
 # System Specific Libraries
 #
-SYSLIBS  = -L/usr/local/lib -L/usr/lib -liphlpapi -lws2_32 -lssl -lcrypto -lws2_32 -lgdi32
+SYSLIBS  = -L/usr/local/lib -L/usr/lib -liphlpapi -lgdi32
+ifeq ($(POCO_NET_SUPPORT),enable)
+SYSLIBS += -lws2_32
+endif
+ifeq ($(POCO_NETSSL_SUPPORT),enable)
+SYSLIBS += -lws2_32 -lssl -lcrypto -lws2_32
+endif
+ifeq ($(POCO_DATA_ODBC_SUPPORT),enable)
+SYSLIBS += -lodbc32
+endif