# SPDX-License-Identifier: GPL-2.0

pahole-ver := $(CONFIG_PAHOLE_VERSION)
pahole-flags-y :=

ifeq ($(call test-le, $(pahole-ver), 125),y)

# pahole 1.18 through 1.21 can't handle zero-sized per-CPU vars
ifeq ($(call test-le, $(pahole-ver), 121),y)
pahole-flags-$(call test-ge, $(pahole-ver), 118)	+= --skip_encoding_btf_vars
endif

pahole-flags-$(call test-ge, $(pahole-ver), 121)	+= --btf_gen_floats

pahole-flags-$(call test-ge, $(pahole-ver), 125)	+= --skip_encoding_btf_inconsistent_proto --btf_gen_optimized

else

# Switch to using --btf_features for v1.26 and later.
pahole-flags-$(call test-ge, $(pahole-ver), 126)  = -j --btf_features=encode_force,var,float,enum64,decl_tag,type_tag,optimized_func,consistent_func,decl_tag_kfuncs

ifneq ($(KBUILD_EXTMOD),)
module-pahole-flags-$(call test-ge, $(pahole-ver), 126) += --btf_features=distilled_base
endif

endif

# pahole 1.22 introduced the -j option for parallel processing, but
# this makes its output unreproducible.
# pahole 1.27 introduced --btf_features=+reproducible_build which
# makes the output reproducible even when -j is used.
# Assume that if KBUILD_BUILD_TIMESTAMP is set then a reproducible
# build is required and we must not use -j alone.
ifeq ($(KBUILD_BUILD_TIMESTAMP),)
pahole-flags-$(call test-ge, $(pahole-ver), 122)	+= -j
else
pahole-flags-$(call test-ge, $(pahole-ver), 127)	+= -j --btf_features=+reproducible_build
endif

pahole-flags-$(CONFIG_PAHOLE_HAS_LANG_EXCLUDE)		+= --lang_exclude=rust

export PAHOLE_FLAGS := $(pahole-flags-y)
export MODULE_PAHOLE_FLAGS := $(module-pahole-flags-y)