linux-imx/tools/tracing/rtla/Makefile

NAME := rtla

Follow the kernel version

VERSION := $(shell cat VERSION 2> /dev/null || make -sC ../../.. kernelversion | grep -v make)

From libtracefs:

Makefiles suck: This macro sets a default value of $(2) for the

variable named by $(1), unless the variable has been set by

environment or command line. This is necessary for CC and AR

because make sets default values, so the simpler ?= approach

won't work as expected.

define allow-override $(if $(or $(findstring environment,$(origin $(1))),
$(findstring command line,$(origin $(1)))),,
$(eval $(1) = $(2))) endef

Allow setting CC and AR, or setting CROSS_COMPILE as a prefix.

$(call allow-override,CC,$(CROSS_COMPILE)gcc) $(call allow-override,AR,$(CROSS_COMPILE)ar) $(call allow-override,STRIP,$(CROSS_COMPILE)strip) $(call allow-override,PKG_CONFIG,pkg-config) $(call allow-override,LD_SO_CONF_PATH,/etc/ld.so.conf.d/) $(call allow-override,LDCONFIG,ldconfig)

INSTALL = install MKDIR = mkdir FOPTS := -flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong
-fasynchronous-unwind-tables -fstack-clash-protection WOPTS := -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized

ifeq ($(CC),clang) FOPTS := $(filter-out -ffat-lto-objects, $(FOPTS)) WOPTS := $(filter-out -Wno-maybe-uninitialized, $(WOPTS)) endif

TRACEFS_HEADERS := $$($(PKG_CONFIG) --cflags libtracefs)

CFLAGS := -O -g -DVERSION="$(VERSION)" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS) $(EXTRA_CFLAGS) LDFLAGS := -flto=auto -ggdb $(EXTRA_LDFLAGS) LIBS := $$($(PKG_CONFIG) --libs libtracefs)

SRC := $(wildcard src/.c) HDR := $(wildcard src/.h) OBJ := $(SRC:.c=.o) DIRS := src FILES := Makefile README.txt CEXT := bz2 TARBALL := $(NAME)-$(VERSION).tar.$(CEXT) TAROPTS := -cvjf $(TARBALL) BINDIR := /usr/bin DATADIR := /usr/share DOCDIR := $(DATADIR)/doc MANDIR := $(DATADIR)/man LICDIR := $(DATADIR)/licenses SRCTREE := $(or $(BUILD_SRC),$(CURDIR))

If running from the tarball, man pages are stored in the Documentation

dir. If running from the kernel source, man pages are stored in

Documentation/tools/rtla/.

ifneq ($(wildcard Documentation/.*),) DOCSRC = Documentation/ else DOCSRC = $(SRCTREE)/../../../Documentation/tools/rtla/ endif

LIBTRACEEVENT_MIN_VERSION = 1.5 LIBTRACEFS_MIN_VERSION = 1.3

.PHONY: all warnings show_warnings all: warnings rtla

TEST_LIBTRACEEVENT = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEEVENT_MIN_VERSION) libtraceevent > /dev/null 2>&1 || echo n") ifeq ("$(TEST_LIBTRACEEVENT)", "n") WARNINGS = show_warnings MISSING_LIBS += echo "** libtraceevent version $(LIBTRACEEVENT_MIN_VERSION) or higher"; MISSING_PACKAGES += "libtraceevent-devel" MISSING_SOURCE += echo "** https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ "; endif

TEST_LIBTRACEFS = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEFS_MIN_VERSION) libtracefs > /dev/null 2>&1 || echo n") ifeq ("$(TEST_LIBTRACEFS)", "n") WARNINGS = show_warnings MISSING_LIBS += echo "** libtracefs version $(LIBTRACEFS_MIN_VERSION) or higher"; MISSING_PACKAGES += "libtracefs-devel" MISSING_SOURCE += echo "** https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/ "; endif

define show_dependencies @echo "";
echo " NOTICE: Failed build dependencies";
echo "";
echo " Required Libraries:";
$(MISSING_LIBS)
echo "";
echo " Consider installing the latest libtracefs from your";
echo " distribution, e.g., 'dnf install $(MISSING_PACKAGES)' on Fedora,";
echo " or from source:";
echo "";
$(MISSING_SOURCE)
echo "";
echo "******************" endef

show_warnings: $(call show_dependencies);

ifneq ("$(WARNINGS)", "") ERROR_OUT = $(error Please add the necessary dependencies)

warnings: $(WARNINGS) $(ERROR_OUT) endif

rtla: $(OBJ) $(CC) -o rtla $(LDFLAGS) $(OBJ) $(LIBS)

static: $(OBJ) $(CC) -o rtla-static $(LDFLAGS) --static $(OBJ) $(LIBS) -lpthread -ldl

.PHONY: install install: doc_install $(MKDIR) -p $(DESTDIR)$(BINDIR) $(INSTALL) rtla -m 755 $(DESTDIR)$(BINDIR) $(STRIP) $(DESTDIR)$(BINDIR)/rtla @test ! -f $(DESTDIR)$(BINDIR)/osnoise || rm $(DESTDIR)$(BINDIR)/osnoise ln -s rtla $(DESTDIR)$(BINDIR)/osnoise @test ! -f $(DESTDIR)$(BINDIR)/hwnoise || rm $(DESTDIR)$(BINDIR)/hwnoise ln -s rtla $(DESTDIR)$(BINDIR)/hwnoise @test ! -f $(DESTDIR)$(BINDIR)/timerlat || rm $(DESTDIR)$(BINDIR)/timerlat ln -s rtla $(DESTDIR)$(BINDIR)/timerlat

.PHONY: clean tarball clean: doc_clean @test ! -f rtla || rm rtla @test ! -f rtla-static || rm rtla-static @test ! -f src/rtla.o || rm src/rtla.o @test ! -f $(TARBALL) || rm -f $(TARBALL) @rm -rf *~ $(OBJ) *.tar.$(CEXT)

tarball: clean rm -rf $(NAME)-$(VERSION) && mkdir $(NAME)-$(VERSION) echo $(VERSION) > $(NAME)-$(VERSION)/VERSION cp -r $(DIRS) $(FILES) $(NAME)-$(VERSION) mkdir $(NAME)-$(VERSION)/Documentation/ cp -rp $(SRCTREE)/../../../Documentation/tools/rtla/* $(NAME)-$(VERSION)/Documentation/ tar $(TAROPTS) --exclude='*~' $(NAME)-$(VERSION) rm -rf $(NAME)-$(VERSION)

.PHONY: doc doc_clean doc_install doc: $(MAKE) -C $(DOCSRC)

doc_clean: $(MAKE) -C $(DOCSRC) clean

doc_install: $(MAKE) -C $(DOCSRC) install