From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Sat, 11 Nov 2023 21:18:18 +0000 (+0100)
Subject: cmake: Fail if undefined symbols are used
X-Git-Url: http://git.openwrt.org/openwrt/feeds.git?a=commitdiff_plain;h=263b9a97cf7e1e2467319c23832b705fc01190b5;p=project%2Fustream-ssl.git

cmake: Fail if undefined symbols are used

Make the linking of the shared library fail when undefined symbols are
used. Linking undefined symbols in a shared library normally works and
the linking of the binary using the shared library fails. We also
compile some example applications and they failed already.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 2de6590..f4dca0d 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,7 @@ ENDIF()
 ADD_DEFINITIONS(-Wno-unused-parameter -Wmissing-declarations)
 
 SET(CMAKE_SHARED_LIBRARY_LINK_C_FLAGS "")
+SET(CMAKE_SHARED_LINKER_FLAGS "-Wl,--no-undefined")
 
 IF(MBEDTLS)
   ADD_DEFINITIONS(-DHAVE_MBEDTLS)