Merge pull request #2296 from ben-clayton/err-unresolved
CMake: Error on unresolved symbols
diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb5205e..561262a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -128,6 +128,9 @@
if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS "9.0.0")
add_compile_options(-Werror=deprecated-copy)
endif()
+
+ # Error if there's symbols that are not found at link time.
+ add_link_options("-Wl,--no-undefined")
elseif(${CMAKE_CXX_COMPILER_ID} MATCHES "Clang" AND NOT MSVC)
add_compile_options(-Wall -Wuninitialized -Wunused -Wunused-local-typedefs
-Wunused-parameter -Wunused-value -Wunused-variable)
@@ -138,6 +141,9 @@
if(NOT ENABLE_EXCEPTIONS)
add_compile_options(-fno-exceptions)
endif()
+
+ # Error if there's symbols that are not found at link time.
+ add_link_options("-Wl,-undefined,error")
elseif(MSVC)
if(NOT ENABLE_RTTI)
string(FIND "${CMAKE_CXX_FLAGS}" "/GR" MSVC_HAS_GR)
