diff options
Diffstat (limited to 'Mk/Features/lto.mk')
| -rw-r--r-- | Mk/Features/lto.mk | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/Mk/Features/lto.mk b/Mk/Features/lto.mk new file mode 100644 index 000000000000..3fef5a223e9c --- /dev/null +++ b/Mk/Features/lto.mk @@ -0,0 +1,35 @@ +# LTO Support +# +# This file enforces Link Time Optimization for ports. +# In order to use it, add WITH_LTO=yes to your /etc/make.conf. + +.if !defined(_LTO_MK_INCLUDED) +_LTO_MK_INCLUDED= yes +LTO_Include_MAINTAINER= pkubaj@FreeBSD.org + +. if !defined(LTO_UNSAFE) || defined(LTO_DISABLE_CHECK) +. if "${ARCH}" == "riscv64" && !defined(LTO_DISABLE_CHECK) + DEV_WARNING+= "LTO is currently broken on riscv64, to override set LTO_DISABLE_CHECK=yes" +. elif defined(_INCLUDE_USES_CARGO_MK) + CARGO_ENV+= CARGO_PROFILE_RELEASE_LTO="true" \ + CARGO_PROFILE_RELEASE_PANIC="abort" \ + CARGO_PROFILE_RELEASE_CODEGEN_UNITS=1 +. elif defined(_INCLUDE_USES_MESON_MK) + MESON_ARGS+= -Db_lto=true +. elif defined(_INCLUDE_USES_CABAL_MK) + CABAL_LTO_ARGS= --ghc-options=-split-sections \ + --gcc-options="-fdata-sections -ffunction-sections" \ + --ld-options=-Wl,--gc-sections,--build-id,--icf=all +. else +# Overridable as a user may want to use -flto + LTO_FLAGS?= -flto=thin + CFLAGS+= ${LTO_FLAGS} + CXXFLAGS+= ${LTO_FLAGS} + LDFLAGS+= ${LTO_FLAGS} +. endif +. else +. if defined(_INCLUDE_USES_CARGO_MK) + RUSTFLAGS+= -C lto=no +. endif +. endif +.endif |