From 1ad36d1225ba17e02d57180bdacb50b4e61d4971 Mon Sep 17 00:00:00 2001
From: Romain BOULLARD <romain.boullard@protonmail.com>
Date: Tue, 14 Apr 2026 12:09:34 +0200
Subject: [PATCH] IPO

---
 ConanProfiles/clang      | 9 ++++-----
 ConanProfiles/ipo.cmake  | 8 ++++++++
 ConanProfiles/msvc       | 4 +---
 ConanProfiles/msvcd_asan | 1 +
 4 files changed, 14 insertions(+), 8 deletions(-)
 create mode 100644 ConanProfiles/ipo.cmake

diff --git a/ConanProfiles/clang b/ConanProfiles/clang
index ae00480..c9b5c00 100644
--- a/ConanProfiles/clang
+++ b/ConanProfiles/clang
@@ -12,14 +12,13 @@ build_type=Release
 [conf]
 tools.cmake.cmaketoolchain:extra_variables={'CMAKE_CXX_COMPILER_LAUNCHER': 'ccache', 'CMAKE_C_COMPILER_LAUNCHER': 'ccache'}
 
+tools.cmake.cmaketoolchain:user_toolchain+={{profile_dir}}/ipo.cmake
+
 tools.system.package_manager:mode=install
 tools.system.package_manager:sudo=True
 
-tools.build:exelinkflags=["-fuse-ld=mold", "-flto"]
-tools.build:sharedlinkflags=["-fuse-ld=mold", "-flto"]
-
-tools.build:cflags=["-flto"]
-tools.build:cxxflags=["-flto"]
+tools.build:exelinkflags=["-fuse-ld=mold"]
+tools.build:sharedlinkflags=["-fuse-ld=mold"]
 
 tools.build:compiler_executables={"c": "clang", "cpp": "clang++"}
 
diff --git a/ConanProfiles/ipo.cmake b/ConanProfiles/ipo.cmake
new file mode 100644
index 0000000..3aa8df9
--- /dev/null
+++ b/ConanProfiles/ipo.cmake
@@ -0,0 +1,8 @@
+include(CheckIPOSupported)
+check_ipo_supported(RESULT ipo_supported OUTPUT ipo_error)
+
+if(ipo_supported)
+    set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
+else()
+    message(WARNING "IPO not supported: ${ipo_error}")
+endif()
\ No newline at end of file
diff --git a/ConanProfiles/msvc b/ConanProfiles/msvc
index 6081057..1ce49ef 100644
--- a/ConanProfiles/msvc
+++ b/ConanProfiles/msvc
@@ -10,9 +10,7 @@ build_type=Release
 
 [conf]
 tools.cmake.cmaketoolchain:user_toolchain+={{profile_dir}}/msvc_ccache.cmake
-
-tools.build:exelinkflags=["/LTCG", "/INCREMENTAL:NO"]
-tools.build:sharedlinkflags=["/LTCG", "/INCREMENTAL:NO"]
+tools.cmake.cmaketoolchain:user_toolchain+={{profile_dir}}/ipo.cmake
 
 tools.build:cflags=["/Zc:preprocessor", "/Zc:__STDC__", "/D_CRT_DECLARE_NONSTDC_NAMES=1", "/GL"]
 tools.build:cxxflags=["/Zc:preprocessor", "/permissive-", "/Zc:__cplusplus", "/Zc:enumTypes", "/Zc:templateScope", "/Zc:throwingNew"]
diff --git a/ConanProfiles/msvcd_asan b/ConanProfiles/msvcd_asan
index 6e9e1ae..eb4d255 100644
--- a/ConanProfiles/msvcd_asan
+++ b/ConanProfiles/msvcd_asan
@@ -10,6 +10,7 @@ build_type=Debug
 
 [conf]
 tools.cmake.cmaketoolchain:user_toolchain+={{profile_dir}}/msvc_ccache.cmake
+tools.cmake.cmaketoolchain:user_toolchain+={{profile_dir}}/ipo.cmake
 
 tools.build:exelinkflags=["/INCREMENTAL:NO"]
 tools.build:sharedlinkflags=["/INCREMENTAL:NO"]