Leverage global BUILD_TESTING option

CMakeLists.txt

@@ -79,7 +79,7 @@ if ( EXIV2_ENABLE_EXTERNAL_XMP )
   set(EXIV2_ENABLE_XMP OFF)
 endif()
 
-if( EXIV2_BUILD_UNIT_TESTS )
+if(BUILD_TESTING AND EXIV2_BUILD_UNIT_TESTS)
   set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON) # Requires CMake 3.3.3
 endif()
 
@@ -102,7 +102,7 @@ include(cmake/compilerFlagsExiv2.cmake REQUIRED)
 
 add_subdirectory( src )
 
-if( EXIV2_BUILD_UNIT_TESTS )
+if(BUILD_TESTING AND EXIV2_BUILD_UNIT_TESTS)
   add_subdirectory ( unitTests )
 endif()
 
@@ -117,14 +117,14 @@ if( EXIV2_BUILD_SAMPLES )
     add_subdirectory(samples)
     get_directory_property(SAMPLES DIRECTORY samples DEFINITION APPLICATIONS)
 
-    if (Python3_Interpreter_FOUND)
+    if(BUILD_TESTING AND Python3_Interpreter_FOUND)
       add_test(NAME bashTests
         WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/tests
         COMMAND cmake -E env EXIV2_BINDIR=${CMAKE_RUNTIME_OUTPUT_DIRECTORY} ${Python3_EXECUTABLE} runner.py --verbose bash_tests)
     endif()
   endif()
 
-if (Python3_Interpreter_FOUND)
+  if(BUILD_TESTING AND Python3_Interpreter_FOUND)
     add_test(NAME bugfixTests
       WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/tests
       COMMAND cmake -E env EXIV2_BINDIR=${CMAKE_RUNTIME_OUTPUT_DIRECTORY} ${Python3_EXECUTABLE} runner.py --verbose bugfixes)
@@ -141,7 +141,6 @@ if (Python3_Interpreter_FOUND)
       WORKING_DIRECTORY ${PROJECT_SOURCE_DIR}/tests
       COMMAND cmake -E env EXIV2_BINDIR=${CMAKE_RUNTIME_OUTPUT_DIRECTORY} ${Python3_EXECUTABLE} runner.py --verbose regression_tests)
   endif()
-
 endif()
 
 if( EXIV2_ENABLE_NLS )

cmake/findDependencies.cmake

@@ -30,9 +30,11 @@ endif()
 
 list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake/")
 
+if(BUILD_TESTING)
     find_package(Python3 COMPONENTS Interpreter)
     if(NOT Python3_Interpreter_FOUND)
-    message(WARNING "Python3 was not found. Python tests under the 'tests' folder will not be executed")
+        message(WARNING "Python3 was not found. Python tests under the 'tests' folder will not be executed.")
+    endif()
 endif()
 
 find_package(Filesystem COMPONENTS Experimental Final REQUIRED)

cmake/printSummary.cmake

@@ -65,7 +65,7 @@ if (WIN32)
 endif()
 OptionOutput( "Building exiv2 command:             " EXIV2_BUILD_EXIV2_COMMAND          )
 OptionOutput( "Building samples:                   " EXIV2_BUILD_SAMPLES AND EXIV2_BUILD_EXIV2_COMMAND )
-OptionOutput( "Building unit tests:                " EXIV2_BUILD_UNIT_TESTS             )
+OptionOutput( "Building unit tests:                " EXIV2_BUILD_UNIT_TESTS AND BUILD_TESTING )
 OptionOutput( "Building fuzz tests:                " EXIV2_BUILD_FUZZ_TESTS             )
 OptionOutput( "Building doc:                       " EXIV2_BUILD_DOC                    )
 OptionOutput( "Building with coverage flags:       " BUILD_WITH_COVERAGE                )

src/CMakeLists.txt

@@ -1,6 +1,6 @@
 # Note that this is a hack for testing the internals of the library. If EXIV2_BUILD_UNIT_TESTS==OFF
 # Then we only export the symbols that are explicitly exported
-if( EXIV2_BUILD_UNIT_TESTS )
+if(BUILD_TESTING AND EXIV2_BUILD_UNIT_TESTS)
     set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON) # Requires CMake 3.3.3
 endif()