#

# Copyright (C) 2004 Christophe Varoqui, <christophe.varoqui@opensvc.com>

#

#

# Allow to force some libraries to be used statically. (Uncomment one of the

# following lines or define the values when calling make.)

#

# WITH_LOCAL_LIBDM	= 1

# WITH_LOCAL_LIBSYSFS	= 1

#

# Uncomment to disable libdmmp support

# ENABLE_LIBDMMP = 0

#

# Uncomment to disable dmevents polling support

# ENABLE_DMEVENTS_POLL = 0

ifeq ($(TOPDIR),)

	TOPDIR	= ..

endif

ifndef LIB

	ifeq ($(shell test -d /lib64 && echo 1),1)

		LIB=lib64

	else

		LIB=lib

	endif

endif

ifndef RUN

	ifeq ($(shell test -L /var/run -o ! -d /var/run && echo 1),1)

		RUN=run

	else

		RUN=var/run

	endif

endif

ifndef SYSTEMD

	ifeq ($(shell pkg-config --modversion libsystemd >/dev/null 2>&1 && echo 1), 1)

		SYSTEMD = $(shell pkg-config --modversion libsystemd)

	else

		ifeq ($(shell systemctl --version >/dev/null 2>&1 && echo 1), 1)

			SYSTEMD = $(shell systemctl --version 2> /dev/null | \

				sed -n 's/systemd \([0-9]*\).*/\1/p')

		endif

	endif

endif

ifndef SYSTEMDPATH

	SYSTEMDPATH=usr/lib

endif

prefix		=

exec_prefix	= $(prefix)

usr_prefix	= $(prefix)

bindir		= $(exec_prefix)/usr/sbin

libudevdir	= $(prefix)/$(SYSTEMDPATH)/udev

udevrulesdir	= $(libudevdir)/rules.d

multipathdir	= $(TOPDIR)/libmultipath

man8dir		= $(prefix)/usr/share/man/man8

man5dir		= $(prefix)/usr/share/man/man5

man3dir		= $(prefix)/usr/share/man/man3

syslibdir	= $(prefix)/$(LIB)

usrlibdir	= $(usr_prefix)/$(LIB)

libdir		= $(prefix)/$(LIB)/multipath

unitdir		= $(prefix)/$(SYSTEMDPATH)/systemd/system

mpathpersistdir	= $(TOPDIR)/libmpathpersist

mpathcmddir	= $(TOPDIR)/libmpathcmd

thirdpartydir	= $(TOPDIR)/third-party

libdmmpdir	= $(TOPDIR)/libdmmp

nvmedir		= $(TOPDIR)/libmultipath/nvme

includedir	= $(prefix)/usr/include

pkgconfdir	= $(usrlibdir)/pkgconfig

GZIP		= gzip -9 -c

RM		= rm -f

LN		= ln -sf

INSTALL_PROGRAM	= install

# $(call TEST_CC_OPTION,option,fallback)

# Test if the C compiler supports the option.

# Evaluates to "option" if yes, and "fallback" otherwise.

TEST_CC_OPTION = $(shell \

	if echo 'int main(void){return 0;}' | \

		$(CC) -o /dev/null -c -Werror "$(1)" -xc - >/dev/null 2>&1; \

	then \

		echo "$(1)"; \

	else \

		echo "$(2)"; \

	fi)

ERROR_DISCARDED_QUALIFIERS := $(call TEST_CC_OPTION,-Werror=discarded-qualifiers,)

WNOCLOBBERED := $(call TEST_CC_OPTION,-Wno-clobbered -Wno-error=clobbered,)

ifndef RPM_OPT_FLAGS

	STACKPROT := $(call TEST_CC_OPTION,-fstack-protector-strong,-fstack-protector)

	OPTFLAGS	= -O2 -g -pipe -Wall -Werror=format-security \

			  -Wp,-D_FORTIFY_SOURCE=2 -fexceptions \

			  $(STACKPROT) -grecord-gcc-switches \

			  -fasynchronous-unwind-tables

	ifeq ($(shell test -f /usr/lib/rpm/redhat/redhat-hardened-cc1 && echo 1),1)

		OPTFLAGS += -specs=/usr/lib/rpm/redhat/redhat-hardened-cc1

	endif

	ifeq ($(shell test -f /usr/lib/rpm/redhat/redhat-annobin-cc1 && echo 1),1)

		OPTFLAGS += -specs=/usr/lib/rpm/redhat/redhat-annobin-cc1

	endif

else

	OPTFLAGS = $(RPM_OPT_FLAGS)

endif

OPTFLAGS	+= -Werror -Wextra -Wstrict-prototypes -Wformat=2 \

		   -Werror=implicit-int -Werror=implicit-function-declaration \

		   $(WNOCLOBBERED) \

		   -Werror=cast-qual $(ERROR_DISCARDED_QUALIFIERS) \

		   --param=ssp-buffer-size=4

CFLAGS		:= $(OPTFLAGS) -DBIN_DIR=\"$(bindir)\" -DLIB_STRING=\"${LIB}\" -DRUN_DIR=\"${RUN}\" \

		   -MMD -MP $(CFLAGS)

BIN_CFLAGS	= -fPIE -DPIE

LIB_CFLAGS	= -fPIC

SHARED_FLAGS	= -shared

LDFLAGS		= -Wl,-z,relro -Wl,-z,now

BIN_LDFLAGS	= -pie

# Check whether a function with name $1 has been declared in header file $2.

check_func = $(shell \

	if grep -Eq "^[^[:blank:]]+[[:blank:]]+$1[[:blank:]]*(.*)*" "$2"; then \

		found=1; \

		status="yes"; \

	else \

		found=0; \

		status="no"; \

	fi; \

	echo 1>&2 "Checking for $1 in $2 ... $$status"; \

	echo "$$found" \

	)

# Checker whether a file with name $1 exists

check_file = $(shell \

	if [ -f "$1" ]; then \

		found=1; \

		status="yes"; \

	else \

		found=0; \

		status="no"; \

	fi; \

	echo 1>&2 "Checking if $1 exists ... $$status"; \

	echo "$$found" \

	)

%.o:	%.c

	@echo building $@ because of $?

	$(CC) $(CFLAGS) -c -o $@ $<