Makefile.inc

   1 #
   2 # Copyright (C) 2004 Christophe Varoqui, <christophe.varoqui@opensvc.com>
   3 #
   4
   5 #
   6 # Uncomment to disable libdmmp support
   7 # ENABLE_LIBDMMP = 0
   8 #
   9 # Uncomment to disable dmevents polling support
  10 # ENABLE_DMEVENTS_POLL = 0
  11
  12 # List of scsi device handler modules to load on boot, e.g.
  13 # SCSI_DH_MODULES_PRELOAD := scsi_dh_alua scsi_dh_rdac
  14 SCSI_DH_MODULES_PRELOAD :=
  15
  16
  17 PKGCONFIG       ?= pkg-config
  18
  19 ifeq ($(TOPDIR),)
  20         TOPDIR  = ..
  21 endif
  22
  23 ifndef LIB
  24         ifeq ($(shell test -d /lib64 && echo 1),1)
  25                 LIB=lib64
  26         else
  27                 LIB=lib
  28         endif
  29 endif
  30
  31 ifndef RUN
  32         ifeq ($(shell test -L /var/run -o ! -d /var/run && echo 1),1)
  33                 RUN=run
  34         else
  35                 RUN=var/run
  36         endif
  37 endif
  38
  39 ifndef SYSTEMD
  40         ifeq ($(shell $(PKGCONFIG) --modversion libsystemd >/dev/null 2>&1 && echo 1), 1)
  41                 SYSTEMD = $(shell $(PKGCONFIG) --modversion libsystemd | awk '{print $$1}')
  42         else
  43                 ifeq ($(shell systemctl --version >/dev/null 2>&1 && echo 1), 1)
  44                         SYSTEMD = $(shell systemctl --version 2> /dev/null | \
  45                                 sed -n 's/systemd \([0-9]*\).*/\1/p')
  46                 endif
  47         endif
  48 endif
  49
  50 ifndef SYSTEMDPATH
  51         SYSTEMDPATH=usr/lib
  52 endif
  53
  54 ifndef DEVMAPPER_INCDIR
  55         ifeq ($(shell $(PKGCONFIG) --modversion devmapper >/dev/null 2>&1 && echo 1), 1)
  56                 DEVMAPPER_INCDIR = $(shell $(PKGCONFIG) --variable=includedir devmapper)
  57         else
  58                 DEVMAPPER_INCDIR = /usr/include
  59         endif
  60 endif
  61
  62 ifndef LIBUDEV_INCDIR
  63         ifeq ($(shell $(PKGCONFIG) --modversion libudev >/dev/null 2>&1 && echo 1), 1)
  64                 LIBUDEV_INCDIR = $(shell $(PKGCONFIG) --variable=includedir libudev)
  65         else
  66                 LIBUDEV_INCDIR = /usr/include
  67         endif
  68 endif
  69
  70 # Allow user to override default location.
  71 ifndef LINUX_HEADERS_INCDIR
  72         LINUX_HEADERS_INCDIR = /usr/include
  73 endif
  74
  75 prefix          =
  76 exec_prefix     = $(prefix)
  77 usr_prefix      = $(prefix)
  78 bindir          = $(exec_prefix)/sbin
  79 libudevdir      = $(prefix)/$(SYSTEMDPATH)/udev
  80 udevrulesdir    = $(libudevdir)/rules.d
  81 modulesloaddir  = $(prefix)/$(SYSTEMDPATH)/modules-load.d
  82 multipathdir    = $(TOPDIR)/libmultipath
  83 man8dir         = $(prefix)/usr/share/man/man8
  84 man5dir         = $(prefix)/usr/share/man/man5
  85 man3dir         = $(prefix)/usr/share/man/man3
  86 syslibdir       = $(prefix)/$(LIB)
  87 usrlibdir       = $(usr_prefix)/$(LIB)
  88 libdir          = $(prefix)/$(LIB)/multipath
  89 unitdir         = $(prefix)/$(SYSTEMDPATH)/systemd/system
  90 mpathpersistdir = $(TOPDIR)/libmpathpersist
  91 mpathcmddir     = $(TOPDIR)/libmpathcmd
  92 mpathvaliddir   = $(TOPDIR)/libmpathvalid
  93 thirdpartydir   = $(TOPDIR)/third-party
  94 libdmmpdir      = $(TOPDIR)/libdmmp
  95 nvmedir         = $(TOPDIR)/libmultipath/nvme
  96 includedir      = $(prefix)/usr/include
  97 pkgconfdir      = $(usrlibdir)/pkgconfig
  98
  99 GZIP_PROG       = gzip -9 -c
 100 RM              = rm -f
 101 LN              = ln -sf
 102 INSTALL_PROGRAM = install
 103 NV_VERSION_SCRIPT = $(VERSION_SCRIPT:%.version=%-nv.version)
 104
 105 # $(call TEST_CC_OPTION,option,fallback)
 106 # Test if the C compiler supports the option.
 107 # Evaluates to "option" if yes, and "fallback" otherwise.
 108 TEST_CC_OPTION = $(shell \
 109         if echo 'int main(void){return 0;}' | \
 110                 $(CC) -o /dev/null -c -Werror "$(1)" -xc - >/dev/null 2>&1; \
 111         then \
 112                 echo "$(1)"; \
 113         else \
 114                 echo "$(2)"; \
 115         fi)
 116
 117 STACKPROT := $(call TEST_CC_OPTION,-fstack-protector-strong,-fstack-protector)
 118 ERROR_DISCARDED_QUALIFIERS := $(call TEST_CC_OPTION,-Werror=discarded-qualifiers,)
 119 WNOCLOBBERED := $(call TEST_CC_OPTION,-Wno-clobbered -Wno-error=clobbered,)
 120 WFORMATOVERFLOW := $(call TEST_CC_OPTION,-Wformat-overflow=2,)
 121
 122 OPTFLAGS        := -O2 -g $(STACKPROT) --param=ssp-buffer-size=4
 123 WARNFLAGS       := -Werror -Wall -Wextra -Wformat=2 $(WFORMATOVERFLOW) -Werror=implicit-int \
 124                   -Werror=implicit-function-declaration -Werror=format-security \
 125                   $(WNOCLOBBERED) -Werror=cast-qual $(ERROR_DISCARDED_QUALIFIERS)
 126 CPPFLAGS        := -Wp,-D_FORTIFY_SOURCE=2
 127 CFLAGS          := --std=gnu99 $(CFLAGS) $(OPTFLAGS) $(WARNFLAGS) -pipe \
 128                    -DBIN_DIR=\"$(bindir)\" -DLIB_STRING=\"${LIB}\" -DRUN_DIR=\"${RUN}\" \
 129                    -MMD -MP
 130 BIN_CFLAGS      = -fPIE -DPIE
 131 LIB_CFLAGS      = -fPIC
 132 SHARED_FLAGS    = -shared
 133 LDFLAGS         := $(LDFLAGS) -Wl,-z,relro -Wl,-z,now -Wl,-z,defs
 134 BIN_LDFLAGS     = -pie
 135
 136 # Check whether a function with name $1 has been declared in header file $2.
 137 check_func = $(shell \
 138         if grep -Eq "^[^[:blank:]]+[[:blank:]]+$1[[:blank:]]*(.*)*" "$2"; then \
 139                 found=1; \
 140                 status="yes"; \
 141         else \
 142                 found=0; \
 143                 status="no"; \
 144         fi; \
 145         echo 1>&2 "Checking for $1 in $2 ... $$status"; \
 146         echo "$$found" \
 147         )
 148
 149 # Checker whether a file with name $1 exists
 150 check_file = $(shell \
 151         if [ -f "$1" ]; then \
 152                 found=1; \
 153                 status="yes"; \
 154         else \
 155                 found=0; \
 156                 status="no"; \
 157         fi; \
 158         echo 1>&2 "Checking if $1 exists ... $$status"; \
 159         echo "$$found" \
 160         )
 161
 162 # Check whether a file contains a variable with name $1 in header file $2
 163 check_var = $(shell \
 164         if grep -Eq "(^|[[:blank:]])$1([[:blank:]]|=|$$)" "$2"; then \
 165                 found=1; \
 166                 status="yes"; \
 167         else \
 168                 found=0; \
 169                 status="no"; \
 170         fi; \
 171         echo 1>&2 "Checking for ..  $1 in $2 ... $$status"; \
 172         echo "$$found" \
 173         )
 174
 175 %.o:    %.c
 176         @echo building $@ because of $?
 177         $(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<
 178
 179 %.abi:  %.so.0
 180         abidw $< >$@
 181
 182 %.abi:  %.so
 183         abidw $< >$@