Add CMAKE_INTERPROCEDURAL_OPTIMIZATION

The linker is using link time optimizations anyway; this adds -flto=auto which enables parallel link-time optimization
Cytnx-dev · Nov 28, 2024 · 83dfac6 · 83dfac6
1 parent 008db06
commit 83dfac6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -96,6 +96,9 @@ option(DEV_MODE "Build testing dev_test.cpp with cytnx" OFF)
 # #####################################################################
 project(CYTNX VERSION ${CYTNX_VERSION} LANGUAGES CXX C)
 
+# C++ uses link-time optimization anyway; this enables additionally -flto=auto, for parallel compilation
+set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
+
 add_library(cytnx STATIC)
 set_property(TARGET cytnx PROPERTY C_VISIBILITY_PRESET hidden)
 set_property(TARGET cytnx PROPERTY VISIBILITY_INLINES_HIDDEN ON)