srpt/Makefile

   1 #
   2 # Makefile for ib_srpt.ko.
   3 #
   4
   5 SCST_DIR := $(shell pwd)/../scst/src
   6 SUBDIRS := $(shell pwd)
   7
   8 ifeq ($(KVER),)
   9   ifeq ($(KDIR),)
  10     KVER = $(shell uname -r)
  11     KDIR ?= /lib/modules/$(KVER)/build
  12   else
  13     KVER = $$KERNELRELEASE
  14   endif
  15 else
  16   KDIR ?= /lib/modules/$(KVER)/build
  17 endif
  18
  19 # The file Modules.symvers has been renamed in the 2.6.18 kernel to
  20 # Module.symvers. Find out which name to use by looking in $(KDIR).
  21 MODULE_SYMVERS:=$(shell if [ -e $(KDIR)/Module.symvers ]; then \
  22                        echo Module.symvers; else echo Modules.symvers; fi)
  23
  24 # Whether or not the OFED kernel modules have been installed.
  25 OFED_KERNEL_IB_RPM_INSTALLED:=$(shell if rpm -q kernel-ib 2>/dev/null | grep -q $$(uname -r | sed 's/-/_/g'); then echo true; else echo false; fi)
  26
  27 # Whether or not the OFED kernel-ib-devel RPM has been installed.
  28 OFED_KERNEL_IB_DEVEL_RPM_INSTALLED:=$(shell if rpm -q kernel-ib-devel 2>/dev/null | grep -q $$(uname -r | sed 's/-/_/g'); then echo true; else echo false; fi)
  29
  30 ifeq ($(OFED_KERNEL_IB_DEVEL_RPM_INSTALLED),true)
  31 # Read OFED's config.mk, which contains the definition of the variable
  32 # BACKPORT_INCLUDES.
  33 include /usr/src/ofa_kernel/config.mk
  34 endif
  35
  36 OFED_CFLAGS:=$(shell if $(OFED_KERNEL_IB_DEVEL_RPM_INSTALLED); then echo $(BACKPORT_INCLUDES) -I/usr/src/ofa_kernel/include; fi)
  37
  38 # Path of the OFED ib_srpt.ko kernel module.
  39 OFED_SRPT_PATH:=/lib/modules/$(KVER)/updates/kernel/drivers/infiniband/ulp/srpt/ib_srpt.ko
  40
  41 # Whether or not the OFED ib_srpt.ko kernel module has been installed.
  42 OFED_SRPT_INSTALLED:=$(shell if [ -e $(OFED_SRPT_PATH) ]; then echo true; else echo false; fi)
  43
  44
  45 all: src/$(MODULE_SYMVERS)
  46         $(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd)/src \
  47           PRE_CFLAGS="$(OFED_CFLAGS)" modules
  48
  49 install: all src/ib_srpt.ko
  50         @eval `sed -n 's/#define UTS_RELEASE /KERNELRELEASE=/p' $(KDIR)/include/linux/version.h $(KDIR)/include/linux/utsrelease.h 2>/dev/null`; \
  51         install -vD -m 644 src/ib_srpt.ko \
  52         $(DESTDIR)$(INSTALL_MOD_PATH)/lib/modules/$(KVER)/extra/ib_srpt.ko
  53         -/sbin/depmod -aq $(KVER)
  54
  55 src/Module.symvers src/Modules.symvers: $(SCST_DIR)/$(MODULE_SYMVERS)
  56         @if $(OFED_KERNEL_IB_RPM_INSTALLED); then                           \
  57           if ! $(OFED_KERNEL_IB_DEVEL_RPM_INSTALLED); then                  \
  58             echo "Error: the OFED package kernel-ib-devel has not yet been" \
  59                  "installed.";                                              \
  60             false;                                                          \
  61           elif [ -e /lib/modules/$(KVER)/kernel/drivers/infiniband ]; then  \
  62             echo "Error: the distro-provided InfiniBand kernel drivers"     \
  63                  "must be removed first.";                                  \
  64             false;                                                          \
  65           elif $(OFED_SRPT_INSTALLED); then                                 \
  66             echo "Error: OFED has been built with srpt=y in ofed.conf.";    \
  67             echo "Rebuild OFED with srpt=n.";                               \
  68             false;                                                          \
  69           elif [ -e $(KDIR)/scripts/Makefile.lib ]                          \
  70                && ! grep -wq '^c_flags .*PRE_CFLAGS'                        \
  71                   $(KDIR)/scripts/Makefile.lib                              \
  72                && ! grep -wq '^LINUXINCLUDE .*PRE_CFLAGS'                   \
  73                   $(KDIR)/Makefile; then                                    \
  74             echo "Error: the kernel build system has not yet been patched.";\
  75             false;                                                          \
  76           else                                                              \
  77             echo "  Building against OFED InfiniBand kernel headers.";      \
  78             (                                                               \
  79               grep -v drivers/infiniband/ $<;                               \
  80               cat /usr/src/ofa_kernel/Module.symvers                        \
  81             ) >$@;                                                          \
  82           fi                                                                \
  83         else                                                                \
  84           if $(OFED_KERNEL_IB_DEVEL_RPM_INSTALLED); then                    \
  85             echo "Error: the OFED package kernel-ib has not yet been"       \
  86                  "installed.";                                              \
  87             false;                                                          \
  88           else                                                              \
  89             echo "  Building against non-OFED InfiniBand kernel headers.";  \
  90             cp $< $@;                                                       \
  91           fi;                                                               \
  92         fi
  93
  94 clean:
  95         $(MAKE) -C $(KDIR) SUBDIRS=$(shell pwd)/src clean
  96         rm -f src/Modules.symvers src/Module.symvers src/Module.markers \
  97                 src/modules.order
  98
  99 extraclean: clean
 100
 101 .PHONY: all install clean extraclean