From 94d5f118db668b410d7be422792a5c7e597e8a13 Mon Sep 17 00:00:00 2001
From: Laurent Aphecetche <laurent.aphecetche@gmail.com>
Date: Wed, 20 Jan 2021 18:08:38 +0100
Subject: [PATCH] [O2-1977][CMake](fix) Filter out macros in build directory if
 any

---
 cmake/O2GetListOfMacros.cmake | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/cmake/O2GetListOfMacros.cmake b/cmake/O2GetListOfMacros.cmake
index d032e24a506ad..2f8402f88a3c6 100644
--- a/cmake/O2GetListOfMacros.cmake
+++ b/cmake/O2GetListOfMacros.cmake
@@ -18,5 +18,9 @@ function(o2_get_list_of_macros dir varname)
   file(GLOB_RECURSE listOfMacros RELATIVE ${CMAKE_SOURCE_DIR} ${dir}/*.C)
   # Case sensitive filtering of .C files (to avoid .c files on Mac)
   list(FILTER listOfMacros INCLUDE REGEX "^.*\\.C$")
+  # Remove macros that were copied to the build directory, to deal with
+  # the (non-recommended-but-can-happen) case where the build directory
+  # is a subdirectory of the source dir
+  list(FILTER listOfMacros EXCLUDE REGEX "/stage/${CMAKE_INSTALL_DATADIR}")
   set(${varname} ${listOfMacros} PARENT_SCOPE)
 endfunction()