From 07730ff3465d3cede3026cdd1c17453930f055ce Mon Sep 17 00:00:00 2001 From: Andre Heider Date: Thu, 2 Feb 2023 21:33:38 +0100 Subject: treewide: add support for "lto" in PKG_BUILD_FLAGS This reduces open coding and allows to easily add a knob to enable it treewide, where chosen packages can still opt-out via "no-lto". Some packages used LTO, but not the linker plugin. This unifies 'em all to attempt to produce better code. Quoting man gcc(1): "This improves the quality of optimization by exposing more code to the link-time optimizer." Also use -flto=auto instead of -flto=jobserver, as it's not guaranteed that every buildsystem uses +$(MAKE) correctly. Signed-off-by: Andre Heider --- package/libs/libevent2/Makefile | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'package/libs/libevent2') diff --git a/package/libs/libevent2/Makefile b/package/libs/libevent2/Makefile index 50dd19bf00..92602607ae 100644 --- a/package/libs/libevent2/Makefile +++ b/package/libs/libevent2/Makefile @@ -26,7 +26,7 @@ PKG_CONFIG_DEPENDS:= \ CONFIG_PACKAGE_libevent2-pthreads \ CONFIG_PACKAGE_libevent2-mbedtls -PKG_BUILD_FLAGS:=gc-sections +PKG_BUILD_FLAGS:=gc-sections lto include $(INCLUDE_DIR)/package.mk include $(INCLUDE_DIR)/cmake.mk @@ -114,8 +114,8 @@ define Package/libevent2-pthreads/description threading & locking. endef -TARGET_CFLAGS += $(FPIC) -flto -TARGET_LDFLAGS += -Wl,--as-needed -flto +TARGET_CFLAGS += $(FPIC) +TARGET_LDFLAGS += -Wl,--as-needed CMAKE_OPTIONS += \ -DEVENT__DISABLE_BENCHMARK:BOOL=ON \ -- cgit v1.2.3