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From 19ab9f7a2c23bf7692b7a987248f959319a8747a Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Mon, 30 Oct 2023 21:39:26 +0100
Subject: [PATCH] Deactivate _FORTIFY_SOURCE
_FORTIFY_SOURCE only works with compiler optimizations activated.
We have to deactivate it when we set -O0.
This fixes the following error message with glibc:
error: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Werror=cpp]
musl libc does not show an error message in this case, but has the same
internal problems.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
CMakeLists.txt | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a1ee0c1..78954c0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -22,8 +22,9 @@ ADD_EXECUTABLE(urngd
)
TARGET_LINK_LIBRARIES(urngd ${ubox})
-# jitter RNG must not be compiled with optimizations
+# jitter RNG must not be compiled with optimizations, _FORTIFY_SOURCE needs optimizations
SET_SOURCE_FILES_PROPERTIES(${JTEN_DIR}/jitterentropy-base.c PROPERTIES COMPILE_FLAGS -O0)
+SET_SOURCE_FILES_PROPERTIES(${JTEN_DIR}/jitterentropy-base.c PROPERTIES COMPILE_FLAGS -U_FORTIFY_SOURCE)
INSTALL(TARGETS urngd RUNTIME DESTINATION ${CMAKE_INSTALL_SBINDIR})
--
2.39.2
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