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# use this to disable flto optimizations:
# make NO_FLTO=1
# and this to enable verbose mode:
# make V=1
# an example how to build with CFI (https://en.wikipedia.org/wiki/Control-flow_integrity)
# CC=clang-17 CFLAGS="-fsanitize=cfi -fno-sanitize-trap -fvisibility=hidden" make
#
# SPDX-License-Identifier: GPL-2.0-or-later
#
# Copyright (C) 2014 Vyacheslav Trushkin
# Copyright (C) 2020-2025 Boian Bonev
#
# This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
TARGET=iotop
SRCS:=$(wildcard src/*.c)
OBJS:=$(patsubst %c,%o,$(patsubst src/%,bld/%,$(SRCS)))
DEPS:=$(OBJS:.o=.d)
ifndef NO_FLTO
CFLAGS?=-O3 -fno-stack-protector -mno-stackrealign
CFLAGS+=-flto=auto
else
CFLAGS?=-O3 -fno-stack-protector -mno-stackrealign
endif
ifdef GCCFANALIZER
CFLAGS+=-fanalyzer
endif
PREFIX?=$(DESTDIR)/usr
BINDIR?=$(PREFIX)/sbin
INSTALL?=install
STRIP?=strip
PKG_CONFIG?=pkg-config
NCCC?=$(shell $(PKG_CONFIG) --cflags ncursesw)
NCLD?=$(shell $(PKG_CONFIG) --libs ncursesw)
ifeq ("$(NCLD)","")
NCCC:=$(shell $(PKG_CONFIG) --cflags ncurses)
NCLD:=$(shell $(PKG_CONFIG) --libs ncurses)
endif
ifeq ("$(NCLD)","")
NCCC:=
NCLD:=-lncursesw
endif
# for glibc < 2.17, -lrt is required for clock_gettime
NEEDLRT:=$(shell if $(CC) -E glibcvertest.h -o -|grep IOTOP_NEED_LRT|grep -q yes;then echo need; fi)
# some architectures do not have -mno-stackrealign
HAVESREA:=$(shell if $(CC) -mno-stackrealign -xc -c /dev/null -o /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
# old comiplers do not have -Wdate-time
HAVEWDTI:=$(shell if $(CC) -Wdate-time -xc -c /dev/null -o /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
# old compilers can not generate dependencies
HAVEDEPS:=$(shell if $(CC) -MM -MT /dev/null -MF /dev/null /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
# old compilers do not understand C standard
HAVECSTD:=$(shell if $(CC) --std=gnu89 -xc -c /dev/null -o /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
# old compilers do not understand -flto=auto
HAVEFLTA:=$(shell if $(CC) -flto=auto -xc -c /dev/null -o /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
# old compilers do not understand -flto at all
HAVEFLTO:=$(shell if $(CC) -flto -xc -c /dev/null -o /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
# old compilers do not understand -pie; clang yields error when stderr is redirected :(
HAVELPIE:=$(shell if $(CC) -Wno-unused-command-line-argument -pie -xc -c /dev/null -o /dev/null >/dev/null 2>/dev/null;then echo yes;else echo no;fi)
MYCFLAGS:=$(CPPFLAGS) $(CFLAGS) $(NCCC) -Wall -Wextra -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 --std=gnu89 -fPIE
MYLIBS:=$(NCLD) $(LIBS)
MYLDFLAGS:=$(CPPFLAGS) $(CFLAGS) $(LDFLAGS) -fPIE -pie
ifeq ("$(HAVESREA)","no")
MYCFLAGS:=$(filter-out -mno-stackrealign,$(MYCFLAGS))
MYLDFLAGS:=$(filter-out -mno-stackrealign,$(MYLDFLAGS))
endif
ifeq ("$(HAVEWDTI)","no")
MYCFLAGS:=$(filter-out -Wdate-time,$(MYCFLAGS))
MYLDFLAGS:=$(filter-out -Wdate-time,$(MYLDFLAGS))
endif
ifeq ("$(HAVECSTD)","no")
MYCFLAGS:=$(filter-out --std=gnu89,$(MYCFLAGS))
MYLDFLAGS:=$(filter-out --std=gnu89,$(MYLDFLAGS))
MYCFLAGS:=$(filter-out -D_FORTIFY_SOURCE=2,$(MYCFLAGS))
MYLDFLAGS:=$(filter-out -D_FORTIFY_SOURCE=2,$(MYLDFLAGS))
endif
ifeq ("$(HAVEFLTA)","no")
ifndef NO_FLTO
ifeq ("$(HAVEFLTA)","no")
MYCFLAGS:=$(filter-out -flto=auto,$(MYCFLAGS))
MYLDFLAGS:=$(filter-out -flto=auto,$(MYLDFLAGS))
else
MYCFLAGS:=$(filter-out -flto=auto,$(MYCFLAGS))
MYLDFLAGS:=$(filter-out -flto=auto,$(MYLDFLAGS))
MYCFLAGS+=-flto
MYLDFLAGS+=-flto
endif
endif
endif
ifeq ("$(HAVELPIE)","no")
MYLDFLAGS:=$(filter-out -pie,$(MYLDFLAGS))
endif
ifeq ("$(NEEDLRT)","need")
MYLDFLAGS+=-lrt
endif
ifeq ("$(V)","1")
Q:=
E:=@true
else
Q:=@
E:=@echo
endif
ifeq ("$(HAVEDEPS)","no")
NDEP:=@true
else
NDEP:=
endif
all: $(TARGET)
$(TARGET): $(OBJS)
$(E) LD $@
$(Q)$(CC) -o $@ $(MYLDFLAGS) $^ $(MYLIBS)
bld/%.o: src/%.c bld/.mkdir
$(NDEP) $(E) DE $@
$(NDEP) $(Q)$(CC) $(MYCFLAGS) -MM -MT $@ -MF $(patsubst %.o,%.d,$@) $<
$(E) CC $@
$(Q)$(CC) $(MYCFLAGS) -c -o $@ $<
clean:
$(E) CLEAN
$(Q)rm -rf ./bld $(TARGET)
install: $(TARGET)
$(E) STRIP $(TARGET)
$(Q)$(STRIP) $(TARGET)
$(E) INSTALL $(TARGET)
$(Q)$(INSTALL) -D -m 0755 $(TARGET) $(BINDIR)/$(TARGET)
$(Q)$(INSTALL) -D -m 0644 iotop.8 $(PREFIX)/share/man/man8/iotop.8
uninstall:
$(E) UNINSTALL $(TARGET)
$(Q)rm -f $(BINDIR)/$(TARGET)
$(Q)rm -f $(PREFIX)/share/man/man8/iotop.8
bld/.mkdir:
$(Q)mkdir -p bld
$(Q)touch bld/.mkdir
VER:=$(shell grep ' VERSION ' src/iotop.h|tr -d '\"'|awk '{print $$3}')
mkotar:
$(MAKE) clean
-dh_clean
tar \
--xform 's,^[.],iotop-$(VER),' \
--exclude ./.git \
--exclude ./.gitignore \
--exclude ./debian \
-Jcvf ../iotop-c_$(VER).orig.tar.xz .
-rm -f ../iotop-c_$(VER).orig.tar.xz.asc
gpg -a --detach-sign ../iotop-c_$(VER).orig.tar.xz
cp -fa ../iotop-c_$(VER).orig.tar.xz ../iotop-$(VER).tar.xz
cp -fa ../iotop-c_$(VER).orig.tar.xz.asc ../iotop-$(VER).tar.xz.asc
re:
$(Q)$(MAKE) --no-print-directory clean
$(Q)$(MAKE) --no-print-directory -j
pv:
@echo CFLAGS: $(CFLAGS)
@echo LDFLAGS: $(LDFLAGS)
@echo LIBS: $(LIBS)
@echo NCCC: $(NCCC)
@echo NCLD: $(NCLD)
@echo NEEDLRT: $(NEEDLRT)
@echo HAVESREA: $(HAVESREA)
@echo HAVEWDTI: $(HAVEWDTI)
@echo HAVEDEPS: $(HAVEDEPS)
@echo HAVECSTD: $(HAVECSTD)
@echo HAVEFLTA: $(HAVEFLTA)
@echo HAVEFLTO: $(HAVEFLTO)
@echo HAVELPIE: $(HAVELPIE)
@echo MYCFLAGS: $(MYCFLAGS)
@echo MYLDFLAGS: $(MYLDFLAGS)
@echo MYLIBS: $(MYLIBS)
-include $(DEPS)
.PHONY: all clean install uninstall mkotar re pv
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