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build: add a config knob to enable LTO for all packages

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This enables LTO for all packages which haven't opted-out.

Signed-off-by: Andre Heider <a.heider@gmail.com>
This commit is contained in:
Andre Heider
2023-01-28 15:24:37 +01:00
committed by Christian Marangi
parent 1342afcd27
commit 9ea7019ffd
2 changed files with 8 additions and 1 deletions
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2
include/package.mk
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@@ -56,7 +56,7 @@ ifeq ($(call pkg_build_flag,gc-sections,$(if $(CONFIG_USE_GC_SECTIONS),1,0)),1)
TARGET_CXXFLAGS+= -ffunction-sections -fdata-sections
TARGET_LDFLAGS+= -Wl,--gc-sections
endif
ifeq ($(call pkg_build_flag,lto,0),1)
ifeq ($(call pkg_build_flag,lto,$(if $(CONFIG_USE_LTO),1,0)),1)
TARGET_CFLAGS+= -flto=auto -fno-fat-lto-objects
TARGET_CXXFLAGS+= -flto=auto -fno-fat-lto-objects
TARGET_LDFLAGS+= -flto=auto -fuse-linker-plugin