CXX-2832 Restore VERSION_CURRENT in release tarball (#1092)

* add check to ensure VERSION_CURRENT file is present in dist tarball

* use relative path to VERSION_CURRENT

* include VERSION_CURRENT in dist list if binary dir is the build dir

* create VERSION_CURRENT file for Evg tasks

To fix tasks running the distcheck target

---------

Co-authored-by: Ezra Chung <[email protected]>

Author: kevinAlbs

.evergreen/compile.sh

@@ -98,6 +98,8 @@ darwin* | linux*)
 esac
 : "${cmake_examples_target:?}"
 
+# Create a VERSION_CURRENT file in the build directory to include in the dist tarball.
+python ./etc/calc_release_version.py > ./build/VERSION_CURRENT
 cd build
 
 cmake_flags=(

CMakeLists.txt

@@ -238,13 +238,20 @@ set(CMAKE_MODULE_PATH
 include(GNUInstallDirs)
 include(ParseVersion)
 
+set(MONGOCXX_INCLUDE_VERSION_FILE_IN_DIST OFF)
 set(MONGOCXX_CURRENT_VERSION_FILE "")
 
 if(BUILD_VERSION STREQUAL "0.0.0")
     if(EXISTS ${CMAKE_BINARY_DIR}/VERSION_CURRENT)
         file(STRINGS ${CMAKE_BINARY_DIR}/VERSION_CURRENT BUILD_VERSION)
+        if("${CMAKE_BINARY_DIR}" STREQUAL "${PROJECT_SOURCE_DIR}/build")
+            # If `CMAKE_BINARY_DIR` is the `build` directory, include `VERSION_CURRENT` in the release tarball.
+            set(MONGOCXX_INCLUDE_VERSION_FILE_IN_DIST ON)
+            set(MONGOCXX_CURRENT_VERSION_FILE build/VERSION_CURRENT)
+        endif ()
     elseif(EXISTS ${PROJECT_SOURCE_DIR}/build/VERSION_CURRENT)
-        set(MONGOCXX_CURRENT_VERSION_FILE ${PROJECT_SOURCE_DIR}/build/VERSION_CURRENT)
+        set(MONGOCXX_INCLUDE_VERSION_FILE_IN_DIST ON)
+        set(MONGOCXX_CURRENT_VERSION_FILE build/VERSION_CURRENT)
         file(STRINGS ${MONGOCXX_CURRENT_VERSION_FILE} BUILD_VERSION)
     else()
         find_package(PythonInterp)

cmake/make_dist/MakeDistCheck.cmake

@@ -22,6 +22,11 @@ function (RUN_DIST_CHECK PACKAGE_PREFIX EXT)
       ERROR_MSG "Command to untar ${tarball} failed."
    )
 
+   # Ensure a VERSION_CURRENT file is present.
+   if(MONGOCXX_INCLUDE_VERSION_FILE_IN_DIST AND NOT EXISTS ${PACKAGE_PREFIX}/build/VERSION_CURRENT)
+      message (FATAL_ERROR "Expected tarball to contain a `build/VERSION_CURRENT` file, but it does not")
+   endif ()
+
    set (BUILD_DIR "_cmake_build")
    set (INSTALL_DIR "_cmake_install")
    file (REMOVE_RECURSE ${BUILD_DIR} ${INSTALL_DIR})