Generate executables in top-level build directory

Author: mfasi

mex/CMakeLists.txt

@@ -4,4 +4,5 @@ add_custom_command(
         TARGET gemmi POST_BUILD
         COMMAND ${CMAKE_COMMAND} -E copy
                 ${PROJECT_SOURCE_DIR}/mex/gemmi.m
-                ${GEMMI_BINARY_DIR}/gemmi.m)
+                ${PROJECT_BINARY_DIR}/mex/gemmi.*
+                ${PROJECT_BINARY_DIR})

tests/CMakeLists.txt

@@ -1,2 +1,5 @@
 add_executable(test main.cpp)
-target_include_directories(test PRIVATE ${PROJECT_SOURCE_DIR}/include)
+target_include_directories(test PRIVATE ${PROJECT_SOURCE_DIR}/include)
+set_target_properties(test PROPERTIES
+        RUNTIME_OUTPUT_DIRECTORY ${PROJECT_BINARY_DIR}
+)