Use path relative to Python binary

documentation/CMakeLists.txt

@@ -49,7 +49,6 @@ function(add_documentation_target)
   add_custom_command(
     OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/${target}_done
     COMMAND ${CMAKE_COMMAND} -E make_directory ${out_dir} &&
-            FDB_VERSIONS_TARGET_PATH=${CMAKE_BINARY_DIR}/versions.target
             ${python_command} ${SPHINX_COMMAND} -W -b ${target}
                               -d ${doctree} -c ${sphinx_dir}
                               ${sphinx_dir}/source

documentation/sphinx/conf.py

@@ -53,7 +53,7 @@ copyright = u'2013-2021 Apple, Inc and the FoundationDB project authors'
 
 # Load the version information from 'versions.target'
 import xml.etree.ElementTree as ET
-version_path = os.environ['FDB_VERSIONS_TARGET_PATH']
+version_path = os.path.join(os.path.dirname(sys.executable), '..', '..', '..', 'versions.target')
 tree = ET.parse(version_path)
 root = tree.getroot()
 

packaging/msi/MSIInstaller.wixproj

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="$(OutDir)versions.target" />
+  <Import Project="$(SolutionDir)versions.target" />
   <PropertyGroup Condition="'$(Release)' != 'true' ">
     <SuppressValidation>true</SuppressValidation>
     <PreReleaseDecoration>-PRERELEASE</PreReleaseDecoration>