Do not overwrite CMAKE_PREFIX_PATH in component config files.

This fixes problems when a project adds a directory to
CMAKE_PREFIX_PATH, then calls find_package(Poco ...) and afterwards
calls find_package() for another project located in one of the
directories of the original CMAKE_PREFIX_PATH variable.

CppParser/cmake/PocoCppParserConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoCppParserTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoCppParserTargets.cmake")

Crypto/cmake/PocoCryptoConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoCryptoTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoCryptoTargets.cmake")

Data/MySQL/cmake/PocoDataMySQLConfig.cmake

@@ -1,5 +1,4 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoData)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoDataMySQLTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoDataMySQLTargets.cmake")

Data/ODBC/cmake/PocoDataODBCConfig.cmake

@@ -1,5 +1,4 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoData)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoDataODBCTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoDataODBCTargets.cmake")

Data/SQLite/cmake/PocoDataSQLiteConfig.cmake

@@ -1,5 +1,4 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoData)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoDataSQLiteTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoDataSQLiteTargets.cmake")

Data/cmake/PocoDataConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoDataTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoDataTargets.cmake")

JSON/cmake/PocoJSONConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoJSONTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoJSONTargets.cmake")

MongoDB/cmake/PocoMongoDBConfig.cmake

@@ -1,5 +1,4 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoNet)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoMongoDBTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoMongoDBTargets.cmake")

Net/cmake/PocoNetConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoNetTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoNetTargets.cmake")

NetSSL_OpenSSL/cmake/PocoNetSSLConfig.cmake

@@ -1,7 +1,6 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoUtil)
 find_dependency(PocoNet)
 find_dependency(PocoCrypto)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoNetSSLTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoNetSSLTargets.cmake")

NetSSL_Win/cmake/PocoNetSSLWinConfig.cmake

@@ -1,6 +1,5 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoUtil)
 find_dependency(PocoNet)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoNetSSLWinTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoNetSSLWinTargets.cmake")

PDF/cmake/PocoPDFConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoPDFTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoPDFTargets.cmake")

SevenZip/cmake/PocoSevenZipConfig.cmake

@@ -1,6 +1,5 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoXML)
 find_dependency(PocoUtil)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoSevenZipTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoSevenZipTargets.cmake")

Util/cmake/PocoUtilConfig.cmake

@@ -1,6 +1,5 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoXML)
 find_dependency(PocoJSON)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoUtilTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoUtilTargets.cmake")

XML/cmake/PocoXMLConfig.cmake

@@ -1,4 +1,3 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoXMLTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoXMLTargets.cmake")

Zip/cmake/PocoZipConfig.cmake

@@ -1,6 +1,5 @@
 include(CMakeFindDependencyMacro)
-set(CMAKE_PREFIX_PATH ${CMAKE_CURRENT_LIST_DIR})
 find_dependency(PocoFoundation)
 find_dependency(PocoUtil)
 find_dependency(PocoXML)
-include("${CMAKE_CURRENT_LIST_DIR}/PocoZipTargets.cmake")
+include("${CMAKE_CURRENT_LIST_DIR}/PocoZipTargets.cmake")

cmake/PocoConfig.cmake.in

@@ -21,6 +21,10 @@ get_filename_component(_Poco_install_prefix "${CMAKE_CURRENT_LIST_DIR}" ABSOLUTE
 
 set(_Poco_NOTFOUND_MESSAGE)
 
+# Let components find each other, but don't overwrite CMAKE_PREFIX_PATH
+set(_Poco_CMAKE_PREFIX_PATH_old ${CMAKE_PREFIX_PATH})
+set(CMAKE_PREFIX_PATH ${_Poco_install_prefix})
+
 foreach(module ${Poco_FIND_COMPONENTS})
     find_package(Poco${module}
         ${_Poco_FIND_PARTS_QUIET}
@@ -39,6 +43,9 @@ foreach(module ${Poco_FIND_COMPONENTS})
     list(APPEND Poco_LIBRARIES "Poco::${module}")
 endforeach()
 
+# Restore the original CMAKE_PREFIX_PATH value
+set(CMAKE_PREFIX_PATH ${_Poco_CMAKE_PREFIX_PATH_old})
+
 if (_Poco_NOTFOUND_MESSAGE)
     set(Poco_NOT_FOUND_MESSAGE "${_Poco_NOTFOUND_MESSAGE}")
     set(Poco_FOUND False)