diff --git a/Tests/UseSWIG/BasicConfiguration.cmake b/Tests/UseSWIG/BasicConfiguration.cmake
index 732985674b..d025d2a968 100644
--- a/Tests/UseSWIG/BasicConfiguration.cmake
+++ b/Tests/UseSWIG/BasicConfiguration.cmake
@@ -2,6 +2,13 @@
 find_package(SWIG REQUIRED)
 include(${SWIG_USE_FILE})
 
+# Path separator
+if (WIN32)
+  set (PS "$<SEMICOLON>")
+else()
+  set (PS ":")
+endif()
+
 unset(SWIG_LANG_TYPE)
 unset(SWIG_LANG_INCLUDE_DIRECTORIES)
 unset(SWIG_LANG_DEFINITIONS)
diff --git a/Tests/UseSWIG/BasicPerl/CMakeLists.txt b/Tests/UseSWIG/BasicPerl/CMakeLists.txt
index 10c1cd8bda..476ef0e9a5 100644
--- a/Tests/UseSWIG/BasicPerl/CMakeLists.txt
+++ b/Tests/UseSWIG/BasicPerl/CMakeLists.txt
@@ -8,15 +8,7 @@ set(language "perl")
 
 include (../BasicConfiguration.cmake)
 
-if (WIN32)
-  file (TO_CMAKE_PATH "$ENV{PATH}" perl_path)
-  string (REPLACE ";" "$<SEMICOLON>" perl_path "${perl_path}")
-  set (perl_env "PATH=$<TARGET_FILE_DIR:example>$<SEMICOLON>${perl_path}")
-else()
-  set (perl_env "LD_LIBRARY_PATH=$<TARGET_FILE_DIR:example>")
-endif()
-
 add_test (NAME BasicPerl
-  COMMAND "${CMAKE_COMMAND}" -E env "${perl_env}"
-  "${PERL_EXECUTABLE}" "-I$<TARGET_FILE_DIR:example>"
+  COMMAND "${PERL_EXECUTABLE}" "-I${CMAKE_CURRENT_BINARY_DIR}"
+                               "-I$<TARGET_FILE_DIR:example>"
   "${CMAKE_CURRENT_SOURCE_DIR}/../runme.pl")
diff --git a/Tests/UseSWIG/BasicPython/CMakeLists.txt b/Tests/UseSWIG/BasicPython/CMakeLists.txt
index 1ca4e25b44..cf1d8213c7 100644
--- a/Tests/UseSWIG/BasicPython/CMakeLists.txt
+++ b/Tests/UseSWIG/BasicPython/CMakeLists.txt
@@ -9,5 +9,5 @@ set(language "python")
 include (../BasicConfiguration.cmake)
 
 add_test (NAME BasicPython
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_FILE_DIR:example>"
+  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}${PS}$<TARGET_FILE_DIR:example>"
   "${Python_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
diff --git a/Tests/UseSWIG/LegacyConfiguration.cmake b/Tests/UseSWIG/LegacyConfiguration.cmake
index 640c71339c..1acc05a4dc 100644
--- a/Tests/UseSWIG/LegacyConfiguration.cmake
+++ b/Tests/UseSWIG/LegacyConfiguration.cmake
@@ -5,6 +5,13 @@ set (CMAKE_WARN_DEPRECATED FALSE)
 find_package(SWIG REQUIRED)
 include(${SWIG_USE_FILE})
 
+# Path separator
+if (WIN32)
+  set (PS "$<SEMICOLON>")
+else()
+  set (PS ":")
+endif()
+
 unset(SWIG_LANG_TYPE)
 if(${language} MATCHES python)
   find_package(PythonInterp REQUIRED)
diff --git a/Tests/UseSWIG/LegacyPerl/CMakeLists.txt b/Tests/UseSWIG/LegacyPerl/CMakeLists.txt
index 0def5f5f51..90d92f4eba 100644
--- a/Tests/UseSWIG/LegacyPerl/CMakeLists.txt
+++ b/Tests/UseSWIG/LegacyPerl/CMakeLists.txt
@@ -8,15 +8,7 @@ set(language "perl")
 
 include (../LegacyConfiguration.cmake)
 
-if (WIN32)
-  file (TO_CMAKE_PATH "$ENV{PATH}" perl_path)
-  string (REPLACE ";" "$<SEMICOLON>" perl_path "${perl_path}")
-  set (perl_env "PATH=$<TARGET_FILE_DIR:${SWIG_MODULE_example_REAL_NAME}>$<SEMICOLON>${perl_path}")
-else()
-  set (perl_env "LD_LIBRARY_PATH=$<TARGET_FILE_DIR:${SWIG_MODULE_example_REAL_NAME}>")
-endif()
-
 add_test (NAME LegacyPerl
-  COMMAND "${CMAKE_COMMAND}" -E env "${perl_env}"
-  "${PERL_EXECUTABLE}" "-I$<TARGET_FILE_DIR:${SWIG_MODULE_example_REAL_NAME}>"
+  COMMAND "${PERL_EXECUTABLE}" "-I${CMAKE_CURRENT_BINARY_DIR}"
+                               "-I$<TARGET_FILE_DIR:${SWIG_MODULE_example_REAL_NAME}>"
   "${CMAKE_CURRENT_SOURCE_DIR}/../runme.pl")
diff --git a/Tests/UseSWIG/LegacyPython/CMakeLists.txt b/Tests/UseSWIG/LegacyPython/CMakeLists.txt
index 11a0d285c4..03facb19a6 100644
--- a/Tests/UseSWIG/LegacyPython/CMakeLists.txt
+++ b/Tests/UseSWIG/LegacyPython/CMakeLists.txt
@@ -9,5 +9,5 @@ set(language "python")
 include (../LegacyConfiguration.cmake)
 
 add_test (NAME LegacyPython
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_FILE_DIR:${SWIG_MODULE_example_REAL_NAME}>"
+  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}${PS}$<TARGET_FILE_DIR:${SWIG_MODULE_example_REAL_NAME}>"
   "${PYTHON_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
diff --git a/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt b/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt
index 92cbcd3ce7..3f9d3631e7 100644
--- a/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt
+++ b/Tests/UseSWIG/ModuleVersion2/CMakeLists.txt
@@ -10,6 +10,12 @@ include(${SWIG_USE_FILE})
 find_package(Python2 REQUIRED COMPONENTS Interpreter Development)
 find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
 
+if (WIN32)
+  set (PS $<SEMICOLON>)
+else()
+  set (PS ":")
+endif()
+
 set (UseSWIG_MODULE_VERSION 2)
 unset(CMAKE_SWIG_FLAGS)
 
@@ -41,12 +47,6 @@ set_target_properties (example2 PROPERTIES
 target_link_libraries(example2 PRIVATE Python3::Python)
 
 
-if (WIN32)
-  set (PS $<SEMICOLON>)
-else()
-  set (PS ":")
-endif()
-
 add_test (NAME ModuleVersion2.example1
   COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_PROPERTY:example1,SWIG_SUPPORT_FILES_DIRECTORY>${PS}$<TARGET_FILE_DIR:example1>"
   "${Python2_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
diff --git a/Tests/UseSWIG/MultipleModules/CMakeLists.txt b/Tests/UseSWIG/MultipleModules/CMakeLists.txt
index d495007e49..578825fd7b 100644
--- a/Tests/UseSWIG/MultipleModules/CMakeLists.txt
+++ b/Tests/UseSWIG/MultipleModules/CMakeLists.txt
@@ -12,6 +12,13 @@ find_package(Python REQUIRED COMPONENTS Interpreter Development)
 find_package(Perl REQUIRED)
 find_package(PerlLibs REQUIRED)
 
+# Path separator
+if (WIN32)
+  set (PS "$<SEMICOLON>")
+else()
+  set (PS ":")
+endif()
+
 unset(CMAKE_SWIG_FLAGS)
 
 set_property(SOURCE "../example.i" PROPERTY CPLUSPLUS ON)
@@ -51,19 +58,11 @@ target_link_libraries(example2 PRIVATE ${PERL_LIBRARY})
 
 
 add_test (NAME MultipleModules.Python
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_FILE_DIR:example1>"
+  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}/Python${PS}$<TARGET_FILE_DIR:example1>"
   "${Python_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
 
 
-if (WIN32)
-  file (TO_CMAKE_PATH "$ENV{PATH}" perl_path)
-  string (REPLACE ";" "$<SEMICOLON>" perl_path "${perl_path}")
-  set (perl_env "PATH=$<TARGET_FILE_DIR:example2>$<SEMICOLON>${perl_path}")
-else()
-  set (perl_env "LD_LIBRARY_PATH=$<TARGET_FILE_DIR:example2>")
-endif()
-
 add_test (NAME MultipleModules.Perl
-  COMMAND "${CMAKE_COMMAND}" -E env "${perl_env}"
-  "${PERL_EXECUTABLE}" "-I$<TARGET_FILE_DIR:example2>"
+  COMMAND "${PERL_EXECUTABLE}" "-I${CMAKE_CURRENT_BINARY_DIR}/Perl"
+                               "-I$<TARGET_FILE_DIR:example2>"
   "${CMAKE_CURRENT_SOURCE_DIR}/../runme.pl")
diff --git a/Tests/UseSWIG/MultiplePython/CMakeLists.txt b/Tests/UseSWIG/MultiplePython/CMakeLists.txt
index 260a382563..a5e3eed42c 100644
--- a/Tests/UseSWIG/MultiplePython/CMakeLists.txt
+++ b/Tests/UseSWIG/MultiplePython/CMakeLists.txt
@@ -10,6 +10,13 @@ include(${SWIG_USE_FILE})
 find_package(Python2 REQUIRED COMPONENTS Interpreter Development)
 find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
 
+# Path separator
+if (WIN32)
+  set (PS "$<SEMICOLON>")
+else()
+  set (PS ":")
+endif()
+
 unset(CMAKE_SWIG_FLAGS)
 
 set_property(SOURCE "../example.i" PROPERTY CPLUSPLUS ON)
@@ -44,9 +51,9 @@ target_link_libraries(example2 PRIVATE Python3::Python)
 
 
 add_test (NAME MultiplePython.example1
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_FILE_DIR:example1>"
+  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}/Python2${PS}$<TARGET_FILE_DIR:example1>"
   "${Python2_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")
 
 add_test (NAME MultiplePython.example2
-  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=$<TARGET_FILE_DIR:example2>"
+  COMMAND "${CMAKE_COMMAND}" -E env "PYTHONPATH=${CMAKE_CURRENT_BINARY_DIR}/Python3${PS}$<TARGET_FILE_DIR:example2>"
   "${Python3_EXECUTABLE}" "${CMAKE_CURRENT_SOURCE_DIR}/../runme.py")