stellar

commit 9ee804501d5cd5fd02da68ec89e975d29876e389
parent 75e27270d7d82dceb3274989abbe149546584541
Author: Dimitrije Dobrota <mail@dimitrijedobrota.com>
Date:   Mon, 11 Mar 2024 14:03:08 +0000

Enable link-time optimization properly

Diffstat:
M
CMakeLists.txt
 | 
22
+++++++++++-----------
M
src/engine/CMakeLists.txt
 | 
1
+

2 files changed, 12 insertions(+), 11 deletions(-)
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -3,7 +3,7 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
 project(
     Stellar
-	VERSION 1.2.0
+	VERSION 1.2.1
     DESCRIPTION "Chess engine written in C++"
 	HOMEPAGE_URL https://git.dimitrijedobrota.com/stellar.git
     LANGUAGES CXX
@@ -35,16 +35,6 @@ function(stellar_target_precompile_headers)
     endif()
 endfunction()
 
-CHECK_CXX_COMPILER_FLAG("-flto" COMPILER_SUPPORTS_LTO)
-if(COMPILER_SUPPORTS_LTO)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
-endif()
-
-CHECK_CXX_COMPILER_FLAG("-fno-fat-lto-objects" COMPILER_SUPPORTS_LTO_NOFAT)
-if(COMPILER_SUPPORTS_LTO_NOFAT)
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-fat-lto-objects")
-endif()
-
 CHECK_CXX_COMPILER_FLAG("-fconstexpr-ops-limit=10000000000" COMPILER_SUPPORTS_CONSTEXPR_OPS_LIMIT)
 if(COMPILER_SUPPORTS_CONSTEXPR_OPS_LIMIT)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fconstexpr-ops-limit=1000000000")
@@ -61,3 +51,13 @@ if(COMPILER_SUPPORTS_MARCH_NATIVE)
 endif()
 
 add_subdirectory(src)
+
+include(CheckIPOSupported)
+check_ipo_supported(RESULT lto_supported OUTPUT lto_error)
+
+if( lto_supported )
+    message(STATUS "IPO / LTO enabled")
+    set_property(TARGET engine PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
+else()
+    message(STATUS "IPO / LTO not supported: <${error}>")
+endif()
diff --git a/src/engine/CMakeLists.txt b/src/engine/CMakeLists.txt
@@ -4,6 +4,7 @@ add_executable(engine
     engine.cpp
 )
 
+
 target_link_libraries(engine
     PRIVATE Stellar_version
     PRIVATE board