From fd72d00ffe34c84e292b305f6797201040d31a72 Mon Sep 17 00:00:00 2001
From: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>
Date: Tue, 9 Jan 2024 17:25:47 +0000
Subject: [PATCH] cmake: Add position independent code support

---
 CMakeLists.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c83850f9927..f03b5d6505d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,6 +63,17 @@ list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/module)
 
 set(configure_warnings)
 
+include(CheckPIESupported)
+check_pie_supported(OUTPUT_VARIABLE check_pie_output LANGUAGES CXX)
+if(CMAKE_CXX_LINK_PIE_SUPPORTED)
+  set(CMAKE_POSITION_INDEPENDENT_CODE ON)
+elseif(NOT WIN32)
+  # The warning is superfluous for Windows.
+  message(WARNING "PIE is not supported at link time: ${check_pie_output}")
+  list(APPEND configure_warnings "Position independent code disabled.")
+endif()
+unset(check_pie_output)
+
 # The core_interface library aims to encapsulate common build flags.
 # It is a usage requirement for all targets except for secp256k1, which
 # gets its flags by other means.