fix Exists check

CMakeLists.txt

@@ -180,15 +180,15 @@ add_subdirectory(Net)
 list(APPEND Poco_COMPONENTS "Net")
 endif()
 
-if(EXISTS MongoDB AND ENABLE_MONGODB)
+if(EXISTS ${PROJECT_SOURCE_DIR}/MongoDB AND ENABLE_MONGODB)
 add_subdirectory(MongoDB)
 list(APPEND Poco_COMPONENTS "MongoDB")
 endif()
-if(EXISTS Redis AND ENABLE_REDIS)
+if(EXISTS ${PROJECT_SOURCE_DIR}/Redis AND ENABLE_REDIS)
 add_subdirectory(Redis)
 list(APPEND Poco_COMPONENTS "Redis")
 endif()
-if(EXISTS PDF AND ENABLE_PDF)
+if(EXISTS ${PROJECT_SOURCE_DIR}/PDF AND ENABLE_PDF)
 add_subdirectory(PDF)
 list(APPEND Poco_COMPONENTS "PDF")
 endif()
@@ -197,33 +197,33 @@ endif()
 #NetSSL
 
 
-if(WIN32 AND EXISTS NetSSL_Win AND ENABLE_NETSSL_WIN)
+if(WIN32 AND EXISTS ${PROJECT_SOURCE_DIR}/NetSSL_Win AND ENABLE_NETSSL_WIN)
     add_subdirectory(NetSSL_Win)
     list(APPEND Poco_COMPONENTS "NetSSL_Win")
-endif(WIN32 AND EXISTS NetSSL_Win AND ENABLE_NETSSL_WIN)
+endif(WIN32 AND EXISTS ${PROJECT_SOURCE_DIR}/NetSSL_Win AND ENABLE_NETSSL_WIN)
 
 find_package(OpenSSL)
 if(OPENSSL_FOUND)
     include_directories("${OPENSSL_INCLUDE_DIR}")
-    if(EXISTS NetSSL_OpenSSL AND ENABLE_NETSSL)
+    if(EXISTS ${PROJECT_SOURCE_DIR}/NetSSL_OpenSSL AND ENABLE_NETSSL)
     add_subdirectory(NetSSL_OpenSSL)
     list(APPEND Poco_COMPONENTS "NetSSL_OpenSSL")
     endif()
-    if(EXISTS Crypto AND ENABLE_CRYPTO)
+    if(EXISTS ${PROJECT_SOURCE_DIR}/Crypto AND ENABLE_CRYPTO)
     add_subdirectory(Crypto)
     list(APPEND Poco_COMPONENTS "Crypto")
     endif()
 endif(OPENSSL_FOUND)
 
-if(EXISTS Data AND ENABLE_DATA)
+if(EXISTS ${PROJECT_SOURCE_DIR}/Data AND ENABLE_DATA)
 add_subdirectory(Data)
 list(APPEND Poco_COMPONENTS "Data")
 endif()
-if(EXISTS SevenZip AND ENABLE_SEVENZIP)
+if(EXISTS ${PROJECT_SOURCE_DIR}/SevenZip AND ENABLE_SEVENZIP)
 add_subdirectory(SevenZip)
 list(APPEND Poco_COMPONENTS "SevenZip")
 endif()
-if(EXISTS Zip AND ENABLE_ZIP)
+if(EXISTS ${PROJECT_SOURCE_DIR}/Zip AND ENABLE_ZIP)
 add_subdirectory(Zip)
 list(APPEND Poco_COMPONENTS "Zip")
 endif()
@@ -232,28 +232,28 @@ find_package(APR)
 find_package(Apache2)
 if(APRUTIL_FOUND AND APACHE_FOUND)
     include_directories( "${APACHE_INCLUDE_DIR}" "${APRUTIL_INCLUDE_DIR}" )
-    if(EXISTS ApacheConnector AND ENABLE_APACHECONNECTOR)
+    if(EXISTS ${PROJECT_SOURCE_DIR}/ApacheConnector AND ENABLE_APACHECONNECTOR)
     add_subdirectory(ApacheConnector)
     list(APPEND Poco_COMPONENTS "ApacheConnector")
     endif()
 endif(APRUTIL_FOUND AND APACHE_FOUND)
 
-if(EXISTS CppParser AND ENABLE_CPPPARSER)
+if(EXISTS ${PROJECT_SOURCE_DIR}/CppParser AND ENABLE_CPPPARSER)
 add_subdirectory(CppParser)
 list(APPEND Poco_COMPONENTS "CppParser")
 endif()
 
-if(EXISTS PocoDoc AND ENABLE_POCODOC)
+if(EXISTS ${PROJECT_SOURCE_DIR}/PocoDoc AND ENABLE_POCODOC)
 add_subdirectory(PocoDoc)
 list(APPEND Poco_COMPONENTS "PocoDoc")
 endif()
 
-if(EXISTS PageCompiler AND ENABLE_PAGECOMPILER)
+if(EXISTS ${PROJECT_SOURCE_DIR}/PageCompiler AND ENABLE_PAGECOMPILER)
 add_subdirectory(PageCompiler)
 list(APPEND Poco_COMPONENTS "PageCompiler")
 endif()
 
-if(EXISTS PageCompiler/File2Page AND ENABLE_PAGECOMPILER_FILE2PAGE)
+if(EXISTS ${PROJECT_SOURCE_DIR}/PageCompiler/File2Page AND ENABLE_PAGECOMPILER_FILE2PAGE)
 add_subdirectory(PageCompiler/File2Page)
 list(APPEND Poco_COMPONENTS "File2Page")
 endif()