kernel/mk/kmod-build.mk

   1 #
   2 # Build and install a kernel module
   3 #
   4 # Inputs from user's Makefile:
   5 #
   6 #   MODULE              - name of the kernel module
   7 #   MODULE_TYPE         - "fs", "drv", etc.
   8 #   MODULE_TYPE_LINKS   - "fs", "drv", etc. which will be hardlinked to
   9 #                         MODULE_TYPE
  10 #   MODULE_DEPS         - dependencies
  11 #   MODULE_CONF         - name of .conf file to install
  12 #   MODULE_FW           - firmware files to install
  13 #   SRCS                - source files
  14 #   SRCS32              - additional source files (32-bit build only)
  15 #   SRCS64              - additional source files (64-bit build only)
  16 #   SRCS_DIRS           - additional source directories to search in
  17 #   INCS                - compiler include directives
  18 #   DEFS                - compiler defines (e.g., -DFOO -UBAR)
  19 #   CERRWARN            - compiler error warning args (e.g., -Wno-parentheses)
  20 #
  21 # Additionally, we get the following values from kmod.mk:
  22 #
  23 #   BITS                - should we build a 32-bit or a 64-bit binary
  24 #   SRCTOP              - root of the repository
  25 #
  26
  27 .include <unleashed.mk>
  28
  29 .include <${SRCTOP}/Makefile.cfgparam>
  30
  31 # prevent kmod.mk inclusion in user's Makefile from setting up confusing targets
  32 _KMOD_BUILD=yes
  33 .include <${.CURDIR}/Makefile>
  34
  35 .include <${SRCTOP}/kernel/mk/defines.mk>
  36
  37 CFLAGS = \
  38         $(KERNEL_CFLAGS) \
  39         $(CERRWARN) \
  40         $(INCS:%=-I%) \
  41         $(DEFS)
  42
  43 LDFLAGS = $(KERNEL_LDFLAGS)
  44 .if !empty(MODULE_DEPS)
  45 LDFLAGS += -dy $(MODULE_DEPS:%=-N %)
  46 .endif
  47
  48 # generate all the hard link names even though we may not use it all
  49 LINKS=
  50 .if !empty(MODULE_TYPE_LINKS)
  51 .for type in ${MODULE_TYPE_LINKS}
  52 .if !empty(BITS) && ${BITS} == 32
  53 LINKS += "/kernel/${MODULE_TYPE}/${MODULE}" \
  54          "/kernel/${type}/${MODULE}"
  55 .else
  56 LINKS += "/kernel/${MODULE_TYPE}/${CONFIG_MACH64}/${MODULE}" \
  57          "/kernel/${type}/${CONFIG_MACH64}/${MODULE}"
  58 .endif
  59 .endfor
  60 .endif
  61
  62 .OBJDIR: ${.CURDIR}/obj${BITS}
  63
  64 OBJS =  $(SRCS:%.c=%.o) \
  65         $(SRCS$(BITS):%.c=%.o)
  66
  67 all: ${MODULE}
  68
  69 clean cleandir:
  70
  71 .include <links.mk>
  72
  73 install:
  74 .if !empty(BITS) && ${BITS} == 32
  75         $(INS) -d -m 755 "$(DESTDIR)/kernel/${MODULE_TYPE}"
  76         $(INS) -m 755 ${MODULE} "$(DESTDIR)/kernel/${MODULE_TYPE}/${MODULE}"
  77 .else
  78         $(INS) -d -m 755 "$(DESTDIR)/kernel/${MODULE_TYPE}/${CONFIG_MACH64}"
  79         $(INS) -m 755 ${MODULE} "$(DESTDIR)/kernel/${MODULE_TYPE}/${CONFIG_MACH64}/${MODULE}"
  80 .endif
  81 .if !empty(LINKS)
  82         @set ${LINKS}; ${_LINKS_SCRIPT}
  83 .endif
  84
  85 .PHONY: all clean cleandir install
  86
  87 install-misc: install-conf install-fw
  88
  89 install-conf: ${MODULE_CONF}
  90 .if !empty(MODULE_CONF)
  91         $(INS) -d -m 755 "$(DESTDIR)/kernel/${MODULE_TYPE}"
  92         $(INS) -m 644 ${MODULE_CONF} "$(DESTDIR)/kernel/${MODULE_TYPE}/${MODULE}.conf"
  93 .endif
  94
  95 install-fw: ${MODULE_FW}
  96 .if !empty(MODULE_FW)
  97         $(INS) -d -m 755 "$(DESTDIR)/kernel/firmware/${MODULE}"
  98 .for x in ${MODULE_FW}
  99         $(INS) -m 644 ${x} "$(DESTDIR)/kernel/firmware/${MODULE}"
 100 .endfor
 101 .endif
 102
 103 .PHONY: install-misc install-conf install-fw
 104
 105 $(MODULE): $(OBJS)
 106         ${QLD}$(LD) $(LDFLAGS) -o ${.TARGET} ${.ALLSRC}
 107         ${QCTFCVT}$(CTFCONVERT) -L VERSION ${.TARGET}
 108
 109 .SUFFIXES: .o
 110
 111 .c.o:
 112         @mkdir -p ${.TARGET:H}
 113         ${QCC}$(CC) $(CFLAGS) -c -o ${.TARGET} ${.IMPSRC}