Add ZLIB_TESTS command line option to disable tests if needed

CMakeLists.txt

@@ -7,6 +7,7 @@ set(VERSION "1.2.11")
 
 option(ASM686 "Enable building i686 assembly implementation")
 option(AMD64 "Enable building amd64 assembly implementation")
+option(ZLIB_TESTS "Build zlib tests" ON)
 
 set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
 set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
@@ -230,20 +231,22 @@ endif()
 # Example binaries
 #============================================================================
 
-add_executable(example test/example.c)
-target_link_libraries(example zlib)
-add_test(example example)
+if(ZLIB_TESTS)
+    add_executable(example test/example.c)
+    target_link_libraries(example zlib)
+    add_test(example example)
 
-add_executable(minigzip test/minigzip.c)
-target_link_libraries(minigzip zlib)
+    add_executable(minigzip test/minigzip.c)
+    target_link_libraries(minigzip zlib)
 
-if(HAVE_OFF64_T)
-    add_executable(example64 test/example.c)
-    target_link_libraries(example64 zlib)
-    set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
-    add_test(example64 example64)
+    if(HAVE_OFF64_T)
+        add_executable(example64 test/example.c)
+        target_link_libraries(example64 zlib)
+        set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
+        add_test(example64 example64)
 
-    add_executable(minigzip64 test/minigzip.c)
-    target_link_libraries(minigzip64 zlib)
-    set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
-endif()
+        add_executable(minigzip64 test/minigzip.c)
+        target_link_libraries(minigzip64 zlib)
+        set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
+    endif()
+endif()