Force CMake to recheck external project source

Reviewers: mferencevic, buda

Reviewed By: mferencevic

Subscribers: pullbot

Differential Revision: https://phabricator.memgraph.io/D867

libs/CMakeLists.txt

@@ -56,6 +56,12 @@ function(add_external_project name)
                                  -DCMAKE_INSTALL_PREFIX=${source_dir}
                                  ${KW_CMAKE_ARGS}
                       INSTALL_COMMAND ${KW_INSTALL_COMMAND})
+  # Force the build step (which will check if the source changed) by removing
+  # the stamped build file.
+  ExternalProject_Add_Step(
+    ${name}-proj force-build
+    COMMAND ${CMAKE_COMMAND} -E remove ${CMAKE_CURRENT_BINARY_DIR}/src/${name}-proj-stamp/${name}-proj-build
+    DEPENDERS build ALWAYS 1)
 endfunction(add_external_project)
 
 # Calls `add_external_project`, sets NAME_LIBRARY, NAME_INCLUDE_DIR variables