From: Matthias Maier <tamiko@43-1.org>
Date: Wed, 29 Mar 2023 18:01:27 +0000 (-0500)
Subject: CMake: set POSITION_INDEPENDENT_CODE compiler variable
X-Git-Tag: v9.5.0-rc1~399^2~1
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=9c4bdc1168aca8e878833a5b6ee42e8caa06a70a;p=dealii.git

CMake: set POSITION_INDEPENDENT_CODE compiler variable
---

diff --git a/cmake/macros/macro_populate_target_properties.cmake b/cmake/macros/macro_populate_target_properties.cmake
index 7e3572b649..255398e8d0 100644
--- a/cmake/macros/macro_populate_target_properties.cmake
+++ b/cmake/macros/macro_populate_target_properties.cmake
@@ -87,6 +87,18 @@ function(populate_target_properties _target _build)
     ${DEAL_II_DEFINITIONS} ${DEAL_II_DEFINITIONS_${_build}}
     )
 
+  #
+  # Add target properties:
+  #
+  #  - set POSITION_INDEPENDENT_CODE to true to compile everything with
+  #    the -fpic/-fPIC compiler flag. This ensures that we can link all
+  #    object targets into a relocatable library at the end.
+  #
+
+  set_target_properties(${_target} PROPERTIES
+    POSITION_INDEPENDENT_CODE TRUE
+    )
+
   #
   # Add compile and link options with private scope, and add the link
   # interface: