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Date: Fri, 15 Mar 2024 17:44:05 +0100
From: Daniel Bristot de Oliveira <bristot@...nel.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
Steven Rostedt <rostedt@...dmis.org>,
Arnaldo Carvalho de Melo <acme@...hat.com>
Cc: Daniel Bristot de Oliveira <bristot@...nel.org>,
Josh Poimboeuf <jpoimboe@...nel.org>,
John Kacur <jkacur@...hat.com>,
Namhyung Kim <namhyung@...nel.org>,
Jiri Olsa <jolsa@...nel.org>,
linux-perf-users@...r.kernel.org,
linux-trace-kernel@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH V3 3/3] tools/verification: Use tools/build makefiles on rv
Use tools/build/ makefiles to build rv, inheriting the benefits of
it. For example, having a proper way to handle dependencies.
Suggested-by: Linus Torvalds <torvalds@...ux-foundation.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@...nel.org>
---
tools/verification/rv/.gitignore | 6 +
tools/verification/rv/Build | 1 +
tools/verification/rv/Makefile | 207 +++++++++-----------------
tools/verification/rv/Makefile.config | 47 ++++++
tools/verification/rv/Makefile.rv | 51 +++++++
tools/verification/rv/src/Build | 4 +
6 files changed, 183 insertions(+), 133 deletions(-)
create mode 100644 tools/verification/rv/.gitignore
create mode 100644 tools/verification/rv/Build
create mode 100644 tools/verification/rv/Makefile.config
create mode 100644 tools/verification/rv/Makefile.rv
create mode 100644 tools/verification/rv/src/Build
diff --git a/tools/verification/rv/.gitignore b/tools/verification/rv/.gitignore
new file mode 100644
index 000000000000..34a486585a34
--- /dev/null
+++ b/tools/verification/rv/.gitignore
@@ -0,0 +1,6 @@
+# SPDX-License-Identifier: GPL-2.0-only
+rv
+rv-static
+fixdep
+feature
+FEATURE-DUMP
diff --git a/tools/verification/rv/Build b/tools/verification/rv/Build
new file mode 100644
index 000000000000..a44c22349d4b
--- /dev/null
+++ b/tools/verification/rv/Build
@@ -0,0 +1 @@
+rv-y += src/
diff --git a/tools/verification/rv/Makefile b/tools/verification/rv/Makefile
index 485f8aeddbe0..411d62b3d8eb 100644
--- a/tools/verification/rv/Makefile
+++ b/tools/verification/rv/Makefile
@@ -1,146 +1,87 @@
-NAME := rv
-# 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, $(WOPTS))
+# SPDX-License-Identifier: GPL-2.0-only
+
+ifeq ($(srctree),)
+ srctree := $(patsubst %/,%,$(dir $(CURDIR)))
+ srctree := $(patsubst %/,%,$(dir $(srctree)))
+ srctree := $(patsubst %/,%,$(dir $(srctree)))
endif
-TRACEFS_HEADERS := $$($(PKG_CONFIG) --cflags libtracefs)
-
-CFLAGS := -O -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(MOPTS) $(WOPTS) $(TRACEFS_HEADERS) $(EXTRA_CFLAGS) -I include
-LDFLAGS := -flto=auto -ggdb $(EXTRA_LDFLAGS)
-LIBS := $$($(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/rv/.
-ifneq ($(wildcard Documentation/.*),)
-DOCSRC = Documentation/
+include $(srctree)/tools/scripts/Makefile.include
+
+# O is an alias for OUTPUT
+OUTPUT := $(O)
+
+ifeq ($(OUTPUT),)
+ OUTPUT := $(CURDIR)/
else
-DOCSRC = $(SRCTREE)/../../../Documentation/tools/rv/
+ # subdir is used by the ../Makefile in $(call descend,)
+ ifneq ($(subdir),)
+ OUTPUT := $(OUTPUT)/$(subdir)
+ endif
+endif
+
+ifneq ($(patsubst %/,,$(lastword $(OUTPUT))),)
+ OUTPUT := $(OUTPUT)/
endif
-LIBTRACEEVENT_MIN_VERSION = 1.5
-LIBTRACEFS_MIN_VERSION = 1.3
+RV := $(OUTPUT)rv
+RV_IN := $(RV)-in.o
-.PHONY: all warnings show_warnings
-all: warnings rv
+VERSION := $(shell sh -c "make -sC ../../.. kernelversion | grep -v make")
+DOCSRC := ../../../Documentation/tools/rv/
-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 $(LIBTRACEEVENT_MIN_VERSION) or higher";
-MISSING_PACKAGES += "libtraceevent-devel"
-MISSING_SOURCE += echo "** https://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git/ ";
+FEATURE_TESTS := libtraceevent
+FEATURE_TESTS += libtracefs
+FEATURE_DISPLAY := libtraceevent
+FEATURE_DISPLAY += libtracefs
+
+ifeq ($(V),1)
+ Q =
+else
+ Q = @
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/ ";
+all: $(RV)
+
+include $(srctree)/tools/build/Makefile.include
+include Makefile.rv
+
+# check for dependencies only on required targets
+NON_CONFIG_TARGETS := clean install doc doc_clean doc_install
+
+config := 1
+ifdef MAKECMDGOALS
+ ifeq ($(filter-out $(NON_CONFIG_TARGETS),$(MAKECMDGOALS)),)
+ config := 0
+endif
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)
- $(ERROR_OUT)
+ifeq ($(config),1)
+ include $(srctree)/tools/build/Makefile.feature
+ include Makefile.config
endif
-rv: $(OBJ)
- $(CC) -o rv $(LDFLAGS) $(OBJ) $(LIBS)
-
-.PHONY: install
-install: doc_install
- $(MKDIR) -p $(DESTDIR)$(BINDIR)
- $(INSTALL) rv -m 755 $(DESTDIR)$(BINDIR)
- $(STRIP) $(DESTDIR)$(BINDIR)/rv
-
-.PHONY: clean tarball
-clean: doc_clean
- @test ! -f rv || rm rv
- @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/rv/* $(NAME)-$(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
+CFLAGS += $(INCLUDES) $(LIB_INCLUDES)
+
+export CFLAGS OUTPUT srctree
+
+$(RV): $(RV_IN)
+ $(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RV) $(RV_IN) $(EXTLIBS)
+
+static: $(RV_IN)
+ $(eval LDFLAGS += -static)
+ $(QUIET_LINK)$(CC) $(LDFLAGS) -o $(RV)-static $(RV_IN) $(EXTLIBS)
+
+rv.%: fixdep FORCE
+ make -f $(srctree)/tools/build/Makefile.build dir=. $@
+
+$(RV_IN): fixdep FORCE
+ make $(build)=rv
+
+clean: doc_clean fixdep-clean
+ $(call QUIET_CLEAN, rv)
+ $(Q)find . -name '*.o' -delete -o -name '\.*.cmd' -delete -o -name '\.*.d' -delete
+ $(Q)rm -f rv rv-static fixdep FEATURE-DUMP rv-*
+ $(Q)rm -rf feature
+
+.PHONY: FORCE clean
diff --git a/tools/verification/rv/Makefile.config b/tools/verification/rv/Makefile.config
new file mode 100644
index 000000000000..6d4ba77847b6
--- /dev/null
+++ b/tools/verification/rv/Makefile.config
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+STOP_ERROR :=
+
+LIBTRACEEVENT_MIN_VERSION = 1.5
+LIBTRACEFS_MIN_VERSION = 1.3
+
+define lib_setup
+ $(eval LIB_INCLUDES += $(shell sh -c "$(PKG_CONFIG) --cflags lib$(1)"))
+ $(eval EXTLIBS += -l$(1))
+endef
+
+$(call feature_check,libtraceevent)
+ifeq ($(feature-libtraceevent), 1)
+ $(call detected,CONFIG_LIBTRACEEVENT)
+
+ TEST = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEEVENT_MIN_VERSION) libtraceevent > /dev/null 2>&1 && echo y || echo n")
+ ifeq ($(TEST),n)
+ $(info libtraceevent version is too low, it must be at least $(LIBTRACEEVENT_MIN_VERSION))
+ STOP_ERROR := 1
+ endif
+
+ $(call lib_setup,traceevent)
+else
+ STOP_ERROR := 1
+ $(info libtraceevent is missing. Please install libtraceevent-dev/libtraceevent-devel)
+endif
+
+$(call feature_check,libtracefs)
+ifeq ($(feature-libtracefs), 1)
+ $(call detected,CONFIG_LIBTRACEFS)
+
+ TEST = $(shell sh -c "$(PKG_CONFIG) --atleast-version $(LIBTRACEFS_MIN_VERSION) libtracefs > /dev/null 2>&1 && echo y || echo n")
+ ifeq ($(TEST),n)
+ $(info libtracefs version is too low, it must be at least $(LIBTRACEFS_MIN_VERSION))
+ STOP_ERROR := 1
+ endif
+
+ $(call lib_setup,tracefs)
+else
+ STOP_ERROR := 1
+ $(info libtracefs is missing. Please install libtracefs-dev/libtracefs-devel)
+endif
+
+ifeq ($(STOP_ERROR),1)
+ $(error Please, check the errors above.)
+endif
diff --git a/tools/verification/rv/Makefile.rv b/tools/verification/rv/Makefile.rv
new file mode 100644
index 000000000000..161baa29eb86
--- /dev/null
+++ b/tools/verification/rv/Makefile.rv
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+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)
+export CC AR STRIP PKG_CONFIG LD_SO_CONF_PATH LDCONFIG
+
+FOPTS :=-flto=auto -ffat-lto-objects -fexceptions -fstack-protector-strong \
+ -fasynchronous-unwind-tables -fstack-clash-protection
+WOPTS := -O -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 \
+ -Wp,-D_GLIBCXX_ASSERTIONS -Wno-maybe-uninitialized
+
+ifeq ($(CC),clang)
+ FOPTS := $(filter-out -flto=auto -ffat-lto-objects, $(FOPTS))
+ WOPTS := $(filter-out -Wno-maybe-uninitialized, $(WOPTS))
+endif
+
+INCLUDE := -Iinclude/
+CFLAGS := -g -DVERSION=\"$(VERSION)\" $(FOPTS) $(WOPTS) $(EXTRA_CFLAGS) $(INCLUDE)
+LDFLAGS := -ggdb $(EXTRA_LDFLAGS)
+
+INSTALL := install
+MKDIR := mkdir
+STRIP := strip
+BINDIR := /usr/bin
+
+.PHONY: install
+install: doc_install
+ $(Q)$(MKDIR) -p $(DESTDIR)$(BINDIR)
+ $(call QUIET_INSTALL,rv)$(INSTALL) $(OUTPUT)rv -m 755 $(DESTDIR)$(BINDIR)
+ $(Q)@$(STRIP) $(DESTDIR)$(BINDIR)/rv
+
+.PHONY: doc doc_clean doc_install
+doc:
+ $(MAKE) -C $(DOCSRC)
+
+doc_clean:
+ $(MAKE) -C $(DOCSRC) clean
+
+doc_install:
+ $(MAKE) -C $(DOCSRC) install
diff --git a/tools/verification/rv/src/Build b/tools/verification/rv/src/Build
new file mode 100644
index 000000000000..d781983c1a79
--- /dev/null
+++ b/tools/verification/rv/src/Build
@@ -0,0 +1,4 @@
+rv-y += trace.o
+rv-y += utils.o
+rv-y += in_kernel.o
+rv-y += rv.o
--
2.44.0
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