From c07885689129632979b2ec1d5b21d5d341ff9abc Mon Sep 17 00:00:00 2001
From: Michael Wallner <mike@php.net>
Date: Wed, 15 Sep 2021 13:41:01 +0200
Subject: [PATCH] docs(m2r): fix IS_NEWER_THAN

---
 docs/source/CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/docs/source/CMakeLists.txt b/docs/source/CMakeLists.txt
index 134c8eb5..6b84c94e 100644
--- a/docs/source/CMakeLists.txt
+++ b/docs/source/CMakeLists.txt
@@ -7,6 +7,12 @@ function(DefaultRstPath MDFILE RSTFILE_VAR)
 endfunction()
 
 function(UpdateRstFromMd RSTFILE MDFILE)
+    if(NOT IS_ABSOLUTE ${MDFILE})
+        set(MDFILE ${CMAKE_CURRENT_SOURCE_DIR}/${MDFILE})
+    endif()
+    if (NOT IS_ABSOLUTE ${RSTFILE})
+        set(RSTFILE ${CMAKE_CURRENT_SOURCE_DIR}/${RSTFILE})
+    endif()
     if(${MDFILE} IS_NEWER_THAN ${RSTFILE})
         message("--   Processing ${MDFILE} ...")
         execute_process(
-- 
2.30.2