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 libdmmp support
  13 # ENABLE_LIBDMMP = 0
  14 #
  15 # Uncomment to disable dmevents polling support
  16 # ENABLE_DMEVENTS_POLL = 0
  17
  18 ifeq ($(TOPDIR),)
  19         TOPDIR  = ..
  20 endif
  21
  22 ifndef LIB
  23         ifeq ($(shell test -d /lib64 && echo 1),1)
  24                 LIB=lib64
  25         else
  26                 LIB=lib
  27         endif
  28 endif
  29
  30 ifndef RUN
  31         ifeq ($(shell test -L /var/run -o ! -d /var/run && echo 1),1)
  32                 RUN=run
  33         else
  34                 RUN=var/run
  35         endif
  36 endif
  37
  38 ifndef SYSTEMD
  39         ifeq ($(shell pkg-config --modversion libsystemd >/dev/null 2>&1 && echo 1), 1)
  40                 SYSTEMD = $(shell pkg-config --modversion libsystemd | awk '{print $$1}')
  41         else
  42                 ifeq ($(shell systemctl --version >/dev/null 2>&1 && echo 1), 1)
  43                         SYSTEMD = $(shell systemctl --version 2> /dev/null | \
  44                                 sed -n 's/systemd \([0-9]*\).*/\1/p')
  45                 endif
  46         endif
  47 endif
  48
  49 ifndef SYSTEMDPATH
  50         SYSTEMDPATH=usr/lib
  51 endif
  52
  53 prefix          =
  54 exec_prefix     = $(prefix)
  55 usr_prefix      = $(prefix)
  56 bindir          = $(exec_prefix)/sbin
  57 libudevdir      = $(prefix)/$(SYSTEMDPATH)/udev
  58 udevrulesdir    = $(libudevdir)/rules.d
  59 multipathdir    = $(TOPDIR)/libmultipath
  60 man8dir         = $(prefix)/usr/share/man/man8
  61 man5dir         = $(prefix)/usr/share/man/man5
  62 man3dir         = $(prefix)/usr/share/man/man3
  63 syslibdir       = $(prefix)/$(LIB)
  64 usrlibdir       = $(usr_prefix)/$(LIB)
  65 libdir          = $(prefix)/$(LIB)/multipath
  66 unitdir         = $(prefix)/$(SYSTEMDPATH)/systemd/system
  67 mpathpersistdir = $(TOPDIR)/libmpathpersist
  68 mpathcmddir     = $(TOPDIR)/libmpathcmd
  69 thirdpartydir   = $(TOPDIR)/third-party
  70 libdmmpdir      = $(TOPDIR)/libdmmp
  71 nvmedir         = $(TOPDIR)/libmultipath/nvme
  72 includedir      = $(prefix)/usr/include
  73 pkgconfdir      = $(usrlibdir)/pkgconfig
  74
  75 GZIP            = gzip -9 -c
  76 RM              = rm -f
  77 LN              = ln -sf
  78 INSTALL_PROGRAM = install
  79
  80 # $(call TEST_CC_OPTION,option,fallback)
  81 # Test if the C compiler supports the option.
  82 # Evaluates to "option" if yes, and "fallback" otherwise.
  83 TEST_CC_OPTION = $(shell \
  84         if echo 'int main(void){return 0;}' | \
  85                 $(CC) -o /dev/null -c -Werror "$(1)" -xc - >/dev/null 2>&1; \
  86         then \
  87                 echo "$(1)"; \
  88         else \
  89                 echo "$(2)"; \
  90         fi)
  91
  92 STACKPROT := $(call TEST_CC_OPTION,-fstack-protector-strong,-fstack-protector)
  93 ERROR_DISCARDED_QUALIFIERS := $(call TEST_CC_OPTION,-Werror=discarded-qualifiers,)
  94 WNOCLOBBERED := $(call TEST_CC_OPTION,-Wno-clobbered -Wno-error=clobbered,)
  95
  96 OPTFLAGS        := -O2 -g $(STACKPROT) --param=ssp-buffer-size=4
  97 WARNFLAGS       := -Werror -Wall -Wextra -Wformat=2 -Werror=implicit-int \
  98                   -Werror=implicit-function-declaration -Werror=format-security \
  99                   $(WNOCLOBBERED) -Werror=cast-qual $(ERROR_DISCARDED_QUALIFIERS)
 100 CPPFLAGS        := -Wp,-D_FORTIFY_SOURCE=2
 101 CFLAGS          := --std=gnu99 $(CFLAGS) $(OPTFLAGS) $(WARNFLAGS) -pipe \
 102                    -DBIN_DIR=\"$(bindir)\" -DLIB_STRING=\"${LIB}\" -DRUN_DIR=\"${RUN}\" \
 103                    -MMD -MP
 104 BIN_CFLAGS      = -fPIE -DPIE
 105 LIB_CFLAGS      = -fPIC
 106 SHARED_FLAGS    = -shared
 107 LDFLAGS         := $(LDFLAGS) -Wl,-z,relro -Wl,-z,now
 108 BIN_LDFLAGS     = -pie
 109
 110 # Check whether a function with name $1 has been declared in header file $2.
 111 check_func = $(shell \
 112         if grep -Eq "^[^[:blank:]]+[[:blank:]]+$1[[:blank:]]*(.*)*" "$2"; then \
 113                 found=1; \
 114                 status="yes"; \
 115         else \
 116                 found=0; \
 117                 status="no"; \
 118         fi; \
 119         echo 1>&2 "Checking for $1 in $2 ... $$status"; \
 120         echo "$$found" \
 121         )
 122
 123 # Checker whether a file with name $1 exists
 124 check_file = $(shell \
 125         if [ -f "$1" ]; then \
 126                 found=1; \
 127                 status="yes"; \
 128         else \
 129                 found=0; \
 130                 status="no"; \
 131         fi; \
 132         echo 1>&2 "Checking if $1 exists ... $$status"; \
 133         echo "$$found" \
 134         )
 135
 136 %.o:    %.c
 137         @echo building $@ because of $?
 138         $(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<