Makefile.inc

   1 #
   2 # Copyright (C) 2004 Christophe Varoqui, <christophe.varoqui@opensvc.com>
   3 #
   4
   5 #
   6 # Allow to force some libraries to be used statically. (Uncomment one of the
   7 # following lines or define the values when calling make.)
   8 #
   9 # WITH_LOCAL_LIBDM      = 1
  10 # WITH_LOCAL_LIBSYSFS   = 1
  11 #
  12 # Uncomment to disable RADOS support (e.g. if rados headers are missing).
  13 # ENABLE_RADOS = 0
  14 #
  15 # Uncomment to disable libdmmp support
  16 # ENABLE_LIBDMMP = 0
  17 #
  18 # Uncomment to disable dmevents polling support
  19 # ENABLE_DMEVENTS_POLL = 0
  20
  21 ifeq ($(TOPDIR),)
  22         TOPDIR  = ..
  23 endif
  24
  25 ifndef LIB
  26         ifeq ($(shell test -d /lib64 && echo 1),1)
  27                 LIB=lib64
  28         else
  29                 LIB=lib
  30         endif
  31 endif
  32
  33 ifndef RUN
  34         ifeq ($(shell test -L /var/run -o ! -d /var/run && echo 1),1)
  35                 RUN=run
  36         else
  37                 RUN=var/run
  38         endif
  39 endif
  40
  41 ifndef SYSTEMD
  42         ifeq ($(shell systemctl --version > /dev/null 2>&1 && echo 1), 1)
  43                 SYSTEMD = $(shell systemctl --version 2> /dev/null |  sed -n 's/systemd \([0-9]*\)/\1/p')
  44         endif
  45 endif
  46
  47 ifndef SYSTEMDPATH
  48         SYSTEMDPATH=usr/lib
  49 endif
  50
  51 prefix          =
  52 exec_prefix     = $(prefix)
  53 usr_prefix      = $(prefix)
  54 bindir          = $(exec_prefix)/sbin
  55 libudevdir      = $(prefix)/$(SYSTEMDPATH)/udev
  56 udevrulesdir    = $(libudevdir)/rules.d
  57 multipathdir    = $(TOPDIR)/libmultipath
  58 man8dir         = $(prefix)/usr/share/man/man8
  59 man5dir         = $(prefix)/usr/share/man/man5
  60 man3dir         = $(prefix)/usr/share/man/man3
  61 syslibdir       = $(prefix)/$(LIB)
  62 usrlibdir       = $(usr_prefix)/$(LIB)
  63 libdir          = $(prefix)/$(LIB)/multipath
  64 unitdir         = $(prefix)/$(SYSTEMDPATH)/systemd/system
  65 mpathpersistdir = $(TOPDIR)/libmpathpersist
  66 mpathcmddir     = $(TOPDIR)/libmpathcmd
  67 thirdpartydir   = $(TOPDIR)/third-party
  68 libdmmpdir      = $(TOPDIR)/libdmmp
  69 includedir      = $(prefix)/usr/include
  70 pkgconfdir      = $(usrlibdir)/pkgconfig
  71
  72 GZIP            = gzip -9 -c
  73 RM              = rm -f
  74 LN              = ln -sf
  75 INSTALL_PROGRAM = install
  76
  77 # $(call TEST_CC_OPTION,option,fallback)
  78 # Test if the C compiler supports the option.
  79 # Evaluates to "option" if yes, and "fallback" otherwise.
  80 TEST_CC_OPTION = $(shell \
  81         if echo 'int main(void){return 0;}' | $(CC) -o /dev/null -c "$(1)" -xc - >/dev/null 2>&1; \
  82         then \
  83                 echo "$(1)"; \
  84         else \
  85                 echo "$(2)"; \
  86         fi)
  87
  88 STACKPROT := $(call TEST_CC_OPTION,-fstack-protector-strong,-fstack-protector)
  89 ERROR_DISCARDED_QUALIFIERS := $(call TEST_CC_OPTION,-Werror=discarded-qualifiers,)
  90
  91 OPTFLAGS        = -O2 -g -pipe -Wall -Wextra -Wformat=2 -Werror=implicit-int \
  92                   -Werror=implicit-function-declaration -Werror=format-security \
  93                   -Wno-sign-compare -Wno-unused-parameter -Wno-clobbered \
  94                   -Werror=cast-qual $(ERROR_DISCARDED_QUALIFIERS) \
  95                   -Wp,-D_FORTIFY_SOURCE=2 $(STACKPROT) \
  96                   --param=ssp-buffer-size=4
  97
  98 CFLAGS          := $(OPTFLAGS) -DBIN_DIR=\"$(bindir)\" -DLIB_STRING=\"${LIB}\" -DRUN_DIR=\"${RUN}\" \
  99                    -MMD -MP $(CFLAGS)
 100 BIN_CFLAGS      = -fPIE -DPIE
 101 LIB_CFLAGS      = -fPIC
 102 SHARED_FLAGS    = -shared
 103 LDFLAGS         = -Wl,-z,relro -Wl,-z,now
 104 BIN_LDFLAGS     = -pie
 105
 106 # Check whether a function with name $1 has been declared in header file $2.
 107 check_func = $(shell \
 108         if grep -Eq "^[^[:blank:]]+[[:blank:]]+$1[[:blank:]]*(.*)*" "$2"; then \
 109                 found=1; \
 110                 status="yes"; \
 111         else \
 112                 found=0; \
 113                 status="no"; \
 114         fi; \
 115         echo 1>&2 "Checking for $1 in $2 ... $$status"; \
 116         echo "$$found" \
 117         )
 118
 119 # Checker whether a file with name $1 exists
 120 check_file = $(shell \
 121         if [ -f "$1" ]; then \
 122                 found=1; \
 123                 status="yes"; \
 124         else \
 125                 found=0; \
 126                 status="no"; \
 127         fi; \
 128         echo 1>&2 "Checking if $1 exists ... $$status"; \
 129         echo "$$found" \
 130         )
 131
 132 %.o:    %.c
 133         @echo building $@ because of $?
 134         $(CC) $(CFLAGS) -c -o $@ $<