Makefile.config

  1# SPDX-License-Identifier: GPL-2.0-only
  2
  3include $(srctree)/tools/scripts/utilities.mak
  4
  5STOP_ERROR :=
  6
  7LIBTRACEEVENT_MIN_VERSION = 1.5
  8LIBTRACEFS_MIN_VERSION = 1.6
  9
 10ifndef ($(NO_LIBTRACEEVENT),1)
 11  ifeq ($(call get-executable,$(PKG_CONFIG)),)
 12    $(error Error: $(PKG_CONFIG) needed by libtraceevent/libtracefs is missing on this system, please install it)
 13  endif
 14endif
 15
 16define lib_setup
 17  $(eval LIB_INCLUDES += $(shell sh -c "$(PKG_CONFIG) --cflags lib$(1)"))
 18  $(eval LDFLAGS += $(shell sh -c "$(PKG_CONFIG) --libs-only-L lib$(1)"))
 19  $(eval EXTLIBS += $(shell sh -c "$(PKG_CONFIG) --libs-only-l lib$(1)"))
 20endef
 21
 22$(call feature_check,libtraceevent)
 23ifeq ($(feature-libtraceevent), 1)
 24  $(call detected,CONFIG_LIBTRACEEVENT)
 25
 26  TEST = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEEVENT_MIN_VERSION) libtraceevent > /dev/null 2>&1 && echo y || echo n")
 27  ifeq ($(TEST),n)
 28    $(info libtraceevent version is too low, it must be at least $(LIBTRACEEVENT_MIN_VERSION))
 29    STOP_ERROR := 1
 30  endif
 31
 32  $(call lib_setup,traceevent)
 33else
 34  STOP_ERROR := 1
 35  $(info libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel)
 36endif
 37
 38$(call feature_check,libtracefs)
 39ifeq ($(feature-libtracefs), 1)
 40  $(call detected,CONFIG_LIBTRACEFS)
 41
 42  TEST = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEFS_MIN_VERSION) libtracefs > /dev/null 2>&1 && echo y || echo n")
 43  ifeq ($(TEST),n)
 44    $(info libtracefs version is too low, it must be at least $(LIBTRACEFS_MIN_VERSION))
 45    STOP_ERROR := 1
 46  endif
 47
 48  $(call lib_setup,tracefs)
 49else
 50  STOP_ERROR := 1
 51  $(info libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
 52endif
 53
 54$(call feature_check,libcpupower)
 55ifeq ($(feature-libcpupower), 1)
 56  $(call detected,CONFIG_LIBCPUPOWER)
 57  CFLAGS += -DHAVE_LIBCPUPOWER_SUPPORT
 58  EXTLIBS += -lcpupower
 59else
 60  $(info libcpupower is missing, building without --deepest-idle-state support.)
 61  $(info Please install libcpupower-dev/kernel-tools-libs-devel)
 62endif
 63
 64ifndef BUILD_BPF_SKEL
 65  # BPF skeletons are used to implement improved sample collection, enable
 66  # them by default.
 67  BUILD_BPF_SKEL := 1
 68endif
 69
 70ifeq ($(BUILD_BPF_SKEL),0)
 71  $(info BPF skeleton support disabled, building without BPF skeleton support.)
 72endif
 73
 74$(call feature_check,libbpf)
 75ifeq ($(feature-libbpf), 1)
 76  $(call detected,CONFIG_LIBBPF)
 77else
 78  $(info libbpf is missing, building without BPF skeleton support.)
 79  $(info Please install libbpf-dev/libbpf-devel)
 80  BUILD_BPF_SKEL := 0
 81endif
 82
 83$(call feature_check,clang-bpf-co-re)
 84ifeq ($(feature-clang-bpf-co-re), 1)
 85  $(call detected,CONFIG_CLANG_BPF_CO_RE)
 86else
 87  $(info clang is missing or does not support BPF CO-RE, building without BPF skeleton support.)
 88  $(info Please install clang)
 89  BUILD_BPF_SKEL := 0
 90endif
 91
 92$(call feature_check,bpftool-skeletons)
 93ifeq ($(feature-bpftool-skeletons), 1)
 94  $(call detected,CONFIG_BPFTOOL_SKELETONS)
 95else
 96  $(info bpftool is missing or not supporting skeletons, building without BPF skeleton support.)
 97  $(info Please install bpftool)
 98  BUILD_BPF_SKEL := 0
 99endif
100
101ifeq ($(BUILD_BPF_SKEL),1)
102  CFLAGS += -DHAVE_BPF_SKEL
103  EXTLIBS += -lbpf
104endif
105
106ifeq ($(STOP_ERROR),1)
107  $(error Please, check the errors above.)
108endif