1NAME := rv 2# Follow the kernel version 3VERSION := $(shell cat VERSION 2> /dev/null || make -sC ../../.. kernelversion | grep -v make) 4 5# From libtracefs: 6# Makefiles suck: This macro sets a default value of $(2) for the 7# variable named by $(1), unless the variable has been set by 8# environment or command line. This is necessary for CC and AR 9# because make sets default values, so the simpler ?= approach 10# won't work as expected. 11define allow-override 12 $(if $(or $(findstring environment,$(origin $(1))),\ 13 $(findstring command line,$(origin $(1)))),,\ 14 $(eval $(1) = $(2))) 15endef 16 17# Allow setting CC and AR, or setting CROSS_COMPILE as a prefix. 18$(call allow-override,CC,$(CROSS_COMPILE)gcc) 19$(call allow-override,AR,$(CROSS_COMPILE)ar) 20$(call allow-override,STRIP,$(CROSS_COMPILE)strip) 21$(call allow-override,PKG_CONFIG,pkg-config) 22$(call allow-override,LD_SO_CONF_PATH,/etc/ld.so.conf.d/) 23$(call allow-override,LDCONFIG,ldconfig) 24 25INSTALL = install 26MKDIR = mkdir 27FOPTS := -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong \ 28 -fasynchronous-unwind-tables -fstack-clash-protection 29WOPTS := -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized 30 31TRACEFS_HEADERS := $$($(PKG_CONFIG) --cflags libtracefs) 32 33CFLAGS := -O -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS) $(EXTRA_CFLAGS) -I include 34LDFLAGS := -ggdb $(EXTRA_LDFLAGS) 35LIBS := $$($(PKG_CONFIG) --libs libtracefs) 36 37SRC := $(wildcard src/*.c) 38HDR := $(wildcard src/*.h) 39OBJ := $(SRC:.c=.o) 40DIRS := src 41FILES := Makefile README.txt 42CEXT := bz2 43TARBALL := $(NAME)-$(VERSION).tar.$(CEXT) 44TAROPTS := -cvjf $(TARBALL) 45BINDIR := /usr/bin 46DATADIR := /usr/share 47MANDIR := $(DATADIR)/man 48LICDIR := $(DATADIR)/licenses 49SRCTREE := $(or $(BUILD_SRC),$(CURDIR)) 50 51LIBTRACEEVENT_MIN_VERSION = 1.5 52LIBTRACEFS_MIN_VERSION = 1.3 53 54.PHONY: all warnings show_warnings 55all: warnings rv 56 57TEST_LIBTRACEEVENT = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEEVENT_MIN_VERSION) libtraceevent > /dev/null 2>&1 || echo n") 58ifeq ("$(TEST_LIBTRACEEVENT)", "n") 59WARNINGS = show_warnings 60MISSING_LIBS += echo "** libtraceevent version $(LIBTRACEEVENT_MIN_VERSION) or higher"; 61MISSING_PACKAGES += "libtraceevent-devel" 62MISSING_SOURCE += echo "** https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ "; 63endif 64 65TEST_LIBTRACEFS = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEFS_MIN_VERSION) libtracefs > /dev/null 2>&1 || echo n") 66ifeq ("$(TEST_LIBTRACEFS)", "n") 67WARNINGS = show_warnings 68MISSING_LIBS += echo "** libtracefs version $(LIBTRACEFS_MIN_VERSION) or higher"; 69MISSING_PACKAGES += "libtracefs-devel" 70MISSING_SOURCE += echo "** https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/ "; 71endif 72 73define show_dependencies 74 @echo "********************************************"; \ 75 echo "** NOTICE: Failed build dependencies"; \ 76 echo "**"; \ 77 echo "** Required Libraries:"; \ 78 $(MISSING_LIBS) \ 79 echo "**"; \ 80 echo "** Consider installing the latest libtracefs from your"; \ 81 echo "** distribution, e.g., 'dnf install $(MISSING_PACKAGES)' on Fedora,"; \ 82 echo "** or from source:"; \ 83 echo "**"; \ 84 $(MISSING_SOURCE) \ 85 echo "**"; \ 86 echo "********************************************" 87endef 88 89show_warnings: 90 $(call show_dependencies); 91 92ifneq ("$(WARNINGS)", "") 93ERROR_OUT = $(error Please add the necessary dependencies) 94 95warnings: $(WARNINGS) 96 $(ERROR_OUT) 97endif 98 99rv: $(OBJ) 100 $(CC) -o rv $(LDFLAGS) $(OBJ) $(LIBS) 101 102.PHONY: install 103install: 104 $(MKDIR) -p $(DESTDIR)$(BINDIR) 105 $(INSTALL) rv -m 755 $(DESTDIR)$(BINDIR) 106 $(STRIP) $(DESTDIR)$(BINDIR)/rv 107 108.PHONY: clean tarball 109clean: 110 @test ! -f rv || rm rv 111 @test ! -f $(TARBALL) || rm -f $(TARBALL) 112 @rm -rf *~ $(OBJ) *.tar.$(CEXT) 113 114tarball: clean 115 rm -rf $(NAME)-$(VERSION) && mkdir $(NAME)-$(VERSION) 116 echo $(VERSION) > $(NAME)-$(VERSION)/VERSION 117 cp -r $(DIRS) $(FILES) $(NAME)-$(VERSION) 118 tar $(TAROPTS) --exclude='*~' $(NAME)-$(VERSION) 119 rm -rf $(NAME)-$(VERSION) 120