From 489aa7eb59f30213da11073920c76a4475afb9b1 Mon Sep 17 00:00:00 2001
From: Michael Baentsch <57787676+baentsch@users.noreply.github.com>
Date: Wed, 7 Sep 2022 19:21:27 +0200
Subject: [PATCH] ARM32 gcc12 build workaround (#1297)

* add ARM32 gcc compile option workaround

* add no-ipa-modref only in gcc11 and higher
---
 .CMake/compiler_opts.cmake | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.CMake/compiler_opts.cmake b/.CMake/compiler_opts.cmake
index 7acf88c89..20a07debf 100644
--- a/.CMake/compiler_opts.cmake
+++ b/.CMake/compiler_opts.cmake
@@ -169,6 +169,12 @@ elseif(CMAKE_C_COMPILER_ID STREQUAL "GNU")
         endif ()
     endif()
 
+    # workaround for gcc issues on ARM32 as per https://github.com/open-quantum-safe/liboqs/issues/1288
+    if(ARCH_ARM32v7 AND (CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "11.0.0"))
+        add_compile_options(-fno-ipa-modref)
+        add_compile_options(-fno-ipa-pure-const)
+    endif()
+
 elseif(CMAKE_C_COMPILER_ID STREQUAL "MSVC")
     # Warning C4146 is raised when a unary minus operator is applied to an
     # unsigned type; this has nonetheless been standard and portable for as