config/build-linux.m4

   1 # LB_CHECK_FILE
   2 #
   3 # Check for file existance even when cross compiling
   4 #
   5 AC_DEFUN([LB_CHECK_FILE],
   6 [AS_VAR_PUSHDEF([lb_File], [lb_cv_file_$1])dnl
   7 AC_CACHE_CHECK([for $1], lb_File,
   8 [if test -r "$1"; then
   9     AS_VAR_SET(lb_File, yes)
  10 else
  11     AS_VAR_SET(lb_File, no)
  12 fi])
  13 AS_IF([test AS_VAR_GET(lb_File) = yes], [$2], [$3])[]dnl
  14 AS_VAR_POPDEF([lb_File])dnl
  15 ])# LB_CHECK_FILE
  16
  17
  18 #
  19 # LB_LINUX_VERSION
  20 #
  21 # Set things accordingly for a linux kernel
  22 #
  23 AC_DEFUN([LB_LINUX_VERSION],[
  24 KMODEXT=".ko"
  25
  26 MODULE_TARGET="SUBDIRS"
  27 makerule="$PWD/build"
  28 AC_MSG_CHECKING([for external module build support])
  29 # Support XEN
  30 XEN_INCLUDES=
  31 LB_LINUX_CONFIG([XEN],[XEN_INCLUDES="-I$LINUX/arch/x86/include/mach-xen"],[])
  32 LB_LINUX_CONFIG_VALUE([XEN_INTERFACE_VERSION],[XEN_INCLUDES="$XEN_INCLUDES -D__XEN_INTERFACE_VERSION__=$res"],[XEN_INCLUDES="$XEN_INCLUDES -D__XEN_INTERFACE_VERSION__=$res"])
  33 #
  34 rm -f build/conftest.i
  35 LB_LINUX_TRY_MAKE([],[],
  36         [$makerule OFA_KERNEL_TEST=conftest.i],
  37         [test -s build/conftest.i],
  38         [
  39                 AC_MSG_RESULT([no])
  40         ],[
  41                 makerule="_module_$makerule"
  42                 MODULE_TARGET="M"
  43                 LB_LINUX_TRY_MAKE([],[],
  44                         [$makerule OFA_KERNEL_TEST=conftest.i],
  45                         [test -s build/conftest.i],
  46                         [
  47                                 AC_MSG_RESULT([yes])
  48                         ],[
  49                                 AC_MSG_ERROR([unknown; check config.log for details])
  50                         ])
  51         ])
  52
  53 AC_SUBST(MODULE_TARGET)
  54 AC_SUBST(KMODEXT)
  55 ])
  56
  57 #
  58 # LB_LINUX_RELEASE
  59 #
  60 # get the release version of linux
  61 #
  62 AC_DEFUN([LB_LINUX_RELEASE],
  63 [LINUXRELEASE=
  64 rm -f build/conftest.i
  65 AC_MSG_CHECKING([for Linux release])
  66 if test -s $LINUX_OBJ/include/$AUTOCONF_HDIR/utsrelease.h ; then
  67         LINUXRELEASEHEADER=$AUTOCONF_HDIR/utsrelease.h
  68 else
  69         LINUXRELEASEHEADER=linux/version.h
  70 fi
  71 LB_LINUX_TRY_MAKE([
  72         #include <$LINUXRELEASEHEADER>
  73 ],[
  74         char *LINUXRELEASE;
  75         LINUXRELEASE=UTS_RELEASE;
  76 ],[
  77         $makerule OFA_KERNEL_TEST=conftest.i
  78 ],[
  79         test -s build/conftest.i
  80 ],[
  81         # LINUXRELEASE="UTS_RELEASE"
  82         eval $(grep "LINUXRELEASE=" build/conftest.i)
  83 ],[
  84         AC_MSG_RESULT([unknown])
  85         AC_MSG_ERROR([Could not preprocess test program.  Consult config.log for details.])
  86 ])
  87 rm -f build/conftest.i
  88 if test x$LINUXRELEASE = x ; then
  89         AC_MSG_RESULT([unknown])
  90         AC_MSG_ERROR([Could not determine Linux release version from linux/version.h.])
  91 fi
  92 AC_MSG_RESULT([$LINUXRELEASE])
  93 AC_SUBST(LINUXRELEASE)
  94
  95 moduledir='/lib/modules/'$LINUXRELEASE/updates/kernel
  96 AC_SUBST(moduledir)
  97
  98 modulefsdir='$(moduledir)/fs/$(PACKAGE)'
  99 AC_SUBST(modulefsdir)
 100
 101 modulenetdir='$(moduledir)/net/$(PACKAGE)'
 102 AC_SUBST(modulenetdir)
 103
 104 # ------------ RELEASE --------------------------------
 105 AC_MSG_CHECKING([for OFA release])
 106 AC_ARG_WITH([release],
 107         AC_HELP_STRING([--with-release=string],
 108                        [set the release string (default=$kvers_YYYYMMDDhhmm)]),
 109         [RELEASE=$withval],
 110         RELEASE=""
 111         if test -n "$DOWNSTREAM_RELEASE"; then
 112                 RELEASE="${DOWNSTREAM_RELEASE}_"
 113         fi
 114         RELEASE="$RELEASE`echo ${LINUXRELEASE} | tr '-' '_'`_$BUILDID")
 115 AC_MSG_RESULT($RELEASE)
 116 AC_SUBST(RELEASE)
 117
 118 # check is redhat/suse kernels
 119 AC_MSG_CHECKING([that RedHat kernel])
 120 LB_LINUX_TRY_COMPILE([
 121                 #include <linux/version.h>
 122         ],[
 123                 #ifndef RHEL_RELEASE_CODE
 124                 #error "not redhat kernel"
 125                 #endif
 126         ],[
 127                 RHEL_KERNEL="yes"
 128                 AC_MSG_RESULT([yes])
 129         ],[
 130                 AC_MSG_RESULT([no])
 131 ])
 132
 133 LB_LINUX_CONFIG([SUSE_KERNEL],[SUSE_KERNEL="yes"],[])
 134
 135 ])
 136
 137 # LB_ARG_REPLACE_PATH(PACKAGE, PATH)
 138 AC_DEFUN([LB_ARG_REPLACE_PATH],[
 139         new_configure_args=
 140         eval "set x $ac_configure_args"
 141         shift
 142         for arg; do
 143                 case $arg in
 144                         --with-[$1]=*)
 145                                 arg=--with-[$1]=[$2]
 146                                 ;;
 147                         *\'*)
 148                                 arg=$(printf %s\n ["$arg"] | \
 149                                       sed "s/'/'\\\\\\\\''/g")
 150                                 ;;
 151                 esac
 152                 dnl AS_VAR_APPEND([new_configure_args], [" '$arg'"])
 153                 new_configure_args="$new_configure_args \"$arg\""
 154         done
 155         ac_configure_args=$new_configure_args
 156 ])
 157
 158 # this is the work-horse of the next function
 159 AC_DEFUN([__LB_ARG_CANON_PATH], [
 160         [$3]=$(readlink -f $with_$2)
 161         LB_ARG_REPLACE_PATH([$1], $[$3])
 162 ])
 163
 164 # a front-end for the above function that transforms - and . in the
 165 # PACKAGE portion of --with-PACKAGE into _ suitable for variable names
 166 AC_DEFUN([LB_ARG_CANON_PATH], [
 167         __LB_ARG_CANON_PATH([$1], m4_translit([$1], [-.], [__]), [$2])
 168 ])
 169
 170 #
 171 #
 172 # LB_LINUX_PATH
 173 #
 174 # Find paths for linux, handling kernel-source rpms
 175 #
 176 AC_DEFUN([LB_LINUX_PATH],
 177 [# prep some default values
 178 for DEFAULT_LINUX in /lib/modules/$(uname -r)/{source,build} /usr/src/linux; do
 179         if readlink -q -e $DEFAULT_LINUX; then
 180                 break
 181         fi
 182 done
 183 if test "$DEFAULT_LINUX" = "/lib/modules/$(uname -r)/source"; then
 184         PATHS="/lib/modules/$(uname -r)/build"
 185 fi
 186 PATHS+=" $DEFAULT_LINUX"
 187 for DEFAULT_LINUX_OBJ in $PATHS; do
 188         if readlink -q -e $DEFAULT_LINUX_OBJ; then
 189                 break
 190         fi
 191 done
 192 AC_MSG_CHECKING([for Linux sources])
 193 AC_ARG_WITH([linux],
 194         AC_HELP_STRING([--with-linux=path],
 195                        [set path to Linux source (default=/lib/modules/$(uname -r)/{source,build},/usr/src/linux)]),
 196         [LB_ARG_CANON_PATH([linux], [LINUX])
 197         DEFAULT_LINUX_OBJ=$LINUX],
 198         [LINUX=$DEFAULT_LINUX])
 199 AC_MSG_RESULT([$LINUX])
 200 AC_SUBST(LINUX)
 201
 202 # -------- check for linux --------
 203 LB_CHECK_FILE([$LINUX],[],
 204         [AC_MSG_ERROR([Kernel source $LINUX could not be found.])])
 205
 206 # -------- linux objects (for 2.6) --
 207 AC_MSG_CHECKING([for Linux objects dir])
 208 AC_ARG_WITH([linux-obj],
 209         AC_HELP_STRING([--with-linux-obj=path],
 210                         [set path to Linux objects dir (default=/lib/modules/$(uname -r)/build,/usr/src/linux)]),
 211         [LB_ARG_CANON_PATH([linux-obj], [LINUX_OBJ])],
 212         [LINUX_OBJ=$DEFAULT_LINUX_OBJ])
 213
 214 AC_MSG_RESULT([$LINUX_OBJ])
 215 AC_SUBST(LINUX_OBJ)
 216
 217 # -------- check for .config --------
 218 AC_ARG_WITH([linux-config],
 219         [AC_HELP_STRING([--with-linux-config=path],
 220                         [set path to Linux .conf (default=$LINUX_OBJ/.config)])],
 221         [LB_ARG_CANON_PATH([linux-config], [LINUX_CONFIG])],
 222         [LINUX_CONFIG=$LINUX_OBJ/.config])
 223 AC_SUBST(LINUX_CONFIG)
 224
 225 LB_CHECK_FILE([/boot/kernel.h],
 226         [KERNEL_SOURCE_HEADER='/boot/kernel.h'],
 227         [LB_CHECK_FILE([/var/adm/running-kernel.h],
 228                 [KERNEL_SOURCE_HEADER='/var/adm/running-kernel.h'])])
 229
 230 AC_ARG_WITH([kernel-source-header],
 231         AC_HELP_STRING([--with-kernel-source-header=path],
 232                         [Use a different kernel version header.  Consult build/README.kernel-source for details.]),
 233         [LB_ARG_CANON_PATH([kernel-source-header], [KERNEL_SOURCE_HEADER])])
 234
 235 # ------------ .config exists ----------------
 236 LB_CHECK_FILE([$LINUX_CONFIG],[],
 237         [AC_MSG_ERROR([Kernel config could not be found.  If you are building from a kernel-source rpm consult build/README.kernel-source])])
 238
 239 # ----------- make dep run? ------------------
 240 # at 2.6.19 # $LINUX/include/linux/config.h is removed
 241 # and at more old has only one line
 242 # include <autoconf.h>
 243 LB_CHECK_FILE([$LINUX_OBJ/include/generated/autoconf.h],[AUTOCONF_HDIR=generated],
 244         [LB_CHECK_FILE([$LINUX_OBJ/include/linux/autoconf.h],[AUTOCONF_HDIR=linux],
 245         [AC_MSG_ERROR([Run make config in $LINUX.])])])
 246         AC_SUBST(AUTOCONF_HDIR)
 247
 248 # ----------- kconfig.h exists ---------------
 249 # kernel 3.1, $LINUX/include/linux/kconfig.h is added
 250 # see kernel commit 2a11c8ea20bf850b3a2c60db8c2e7497d28aba99
 251 LB_CHECK_FILE([$LINUX/include/linux/kconfig.h],
 252               [CONFIG_INCLUDE=$LINUX/include/linux/kconfig.h],
 253               [CONFIG_INCLUDE=$LINUX/include/$AUTOCONF_HDIR/kconfig.h])
 254         AC_SUBST(CONFIG_INCLUDE)
 255
 256 if test -e $CONFIG_INCLUDE; then
 257         CONFIG_INCLUDE_FLAG="-include $CONFIG_INCLUDE"
 258 fi
 259
 260 # ------------ rhconfig.h includes runtime-generated bits --
 261 # red hat kernel-source checks
 262
 263 # we know this exists after the check above.  if the user
 264 # tarred up the tree and ran make dep etc. in it, then
 265 # version.h gets overwritten with a standard linux one.
 266 #
 267 if (grep -q rhconfig $LINUX_OBJ/include/linux/version.h 2>/dev/null) ||
 268    (grep -q rhconfig $LINUX_OBJ/include/generated/uapi/linux/version.h 2>/dev/null) ; then
 269         # This is a clean kernel-source tree, we need to
 270         # enable extensive workarounds to get this to build
 271         # modules
 272         LB_CHECK_FILE([$KERNEL_SOURCE_HEADER],
 273                 [if test $KERNEL_SOURCE_HEADER = '/boot/kernel.h' ; then
 274                         AC_MSG_WARN([Using /boot/kernel.h from RUNNING kernel.])
 275                         AC_MSG_WARN([If this is not what you want, use --with-kernel-source-header.])
 276                         AC_MSG_WARN([Consult build/README.kernel-source for details.])
 277                 fi],
 278                 [AC_MSG_ERROR([$KERNEL_SOURCE_HEADER not found.  Consult build/README.kernel-source for details.])])
 279         EXTRA_KCFLAGS="-include $KERNEL_SOURCE_HEADER $EXTRA_KCFLAGS"
 280 fi
 281
 282 # this is needed before we can build modules
 283 SET_BUILD_ARCH
 284 LB_LINUX_CROSS
 285 LB_LINUX_VERSION
 286
 287 # --- check that we can build modules at all
 288 AC_MSG_CHECKING([that modules can be built at all])
 289 LB_LINUX_TRY_COMPILE([],[],[
 290         AC_MSG_RESULT([yes])
 291 ],[
 292         AC_MSG_RESULT([no])
 293         AC_MSG_WARN([Consult config.log for details.])
 294         AC_MSG_WARN([If you are trying to build with a kernel-source rpm, consult build/README.kernel-source])
 295         AC_MSG_ERROR([Kernel modules cannot be built.])
 296 ])
 297
 298 LB_LINUX_RELEASE
 299 ]) # end of LB_LINUX_PATH
 300
 301 # LB_LINUX_SYMVERFILE
 302 # SLES 9 uses a different name for this file - unsure about vanilla kernels
 303 # around this version, but it matters for servers only.
 304 AC_DEFUN([LB_LINUX_SYMVERFILE],
 305         [AC_MSG_CHECKING([name of module symbol version file])
 306         if grep -q Modules.symvers $LINUX/scripts/Makefile.modpost ; then
 307                 SYMVERFILE=Modules.symvers
 308         else
 309                 SYMVERFILE=Module.symvers
 310         fi
 311         AC_MSG_RESULT($SYMVERFILE)
 312         AC_SUBST(SYMVERFILE)
 313 ])
 314
 315 #
 316 # LB_LINUX_CROSS
 317 #
 318 # check for cross compilation
 319 #
 320 AC_DEFUN([LB_LINUX_CROSS],
 321         [AC_MSG_CHECKING([for cross compilation])
 322 CROSS_VARS=
 323 case $target_vendor in
 324         # The K1OM architecture is an extension of the x86 architecture.
 325         # So, the $target_arch is x86_64.
 326         k1om)
 327                 AC_MSG_RESULT([Intel(R) Xeon Phi(TM)])
 328                 CC_TARGET_ARCH=`$CC -v 2>&1 | grep Target: | sed -e 's/Target: //'`
 329                 if test $CC_TARGET_ARCH != x86_64-$target_vendor-linux ; then
 330                         AC_MSG_ERROR([Cross compiler not found in PATH.])
 331                 fi
 332                 CROSS_VARS="ARCH=$target_vendor CROSS_COMPILE=x86_64-$target_vendor-linux-"
 333                 CCAS=$CC
 334                 if test x$enable_server = xyes ; then
 335                         AC_MSG_WARN([Disabling server (not supported for x86_64-$target_vendor-linux).])
 336                         enable_server='no'
 337                 fi
 338                 ;;
 339         *)
 340                 CROSS_VARS="CROSS_COMPILE=$CROSS_COMPILE"
 341                 AC_MSG_RESULT([no])
 342                 ;;
 343 esac
 344 AC_SUBST(CROSS_VARS)
 345 ])
 346
 347 # these are like AC_TRY_COMPILE, but try to build modules against the
 348 # kernel, inside the build directory
 349
 350 # LB_LANG_PROGRAM(C)([PROLOGUE], [BODY])
 351 # --------------------------------------
 352 m4_define([LB_LANG_PROGRAM],
 353 [
 354 #include <linux/kernel.h>
 355 $1
 356 int
 357 main (void)
 358 {
 359 dnl Do *not* indent the following line: there may be CPP directives.
 360 dnl Don't move the `;' right after for the same reason.
 361 $2
 362   ;
 363   return 0;
 364 }])
 365
 366 #
 367 # LB_LINUX_COMPILE_IFELSE
 368 #
 369 # like AC_COMPILE_IFELSE
 370 #
 371 AC_DEFUN([LB_LINUX_COMPILE_IFELSE],
 372 [m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
 373 MAKE=${MAKE:-make}
 374 rm -f build/conftest.o build/conftest.mod.c build/conftest.ko build/output.log
 375 AS_IF([AC_TRY_COMMAND(cp conftest.c build && env $CROSS_VARS $MAKE -d [$2] ${LD:+"LD=$CROSS_COMPILE$LD"} CC="$CROSS_COMPILE$CC" -f $PWD/build/Makefile OFA_LINUX_CONFIG=$LINUX_CONFIG CONFIG_CC_STACKPROTECTOR_STRONG= LINUXINCLUDE="-include $AUTOCONF_HDIR/autoconf.h $XEN_INCLUDES $EXTRA_OFA_INCLUDE -I$LINUX/arch/$SRCARCH/include -Iarch/$SRCARCH/include/generated -Iinclude -I$LINUX/arch/$SRCARCH/include/uapi -Iarch/$SRCARCH/include/generated/uapi -I$LINUX/include -I$LINUX/include/uapi -Iinclude/generated/uapi  -I$LINUX/arch/$SRCARCH/include -Iarch/$SRCARCH/include/generated -I$LINUX/arch/$SRCARCH/include -I$LINUX/arch/$SRCARCH/include/generated -I$LINUX_OBJ/include -I$LINUX/include -I$LINUX_OBJ/include2 $CONFIG_INCLUDE_FLAG" -o tmp_include_depends -o scripts -o include/config/MARKER -C $LINUX_OBJ EXTRA_CFLAGS="-Werror-implicit-function-declaration $EXTRA_KCFLAGS" $CROSS_VARS $MODULE_TARGET=$PWD/build >/dev/null 2>build/output.log; [[[ $? -ne 0 ]]] && cat build/output.log 1>&2 && false || config/warning_filter.sh build/output.log) >/dev/null && AC_TRY_COMMAND([$3])],
 376         [$4],
 377         [_AC_MSG_LOG_CONFTEST
 378 m4_ifvaln([$5],[$5])dnl])
 379 rm -f build/conftest.o build/conftest.mod.c build/conftest.mod.o build/conftest.ko m4_ifval([$1], [build/conftest.c conftest.c])[]dnl
 380 ])
 381
 382 #
 383 # LB_LINUX_ARCH
 384 #
 385 # Determine the kernel's idea of the current architecture
 386 #
 387 AC_DEFUN([LB_LINUX_ARCH],
 388          [AC_MSG_CHECKING([Linux kernel architecture])
 389           AS_IF([rm -f $PWD/build/arch
 390                  make -s --no-print-directory echoarch -f $PWD/build/Makefile \
 391                      OFA_LINUX_CONFIG=$LINUX_CONFIG -C $LINUX $CROSS_VARS  \
 392                      ARCHFILE=$PWD/build/arch && LINUX_ARCH=`cat $PWD/build/arch`],
 393                 [AC_MSG_RESULT([$LINUX_ARCH])],
 394                 [AC_MSG_ERROR([Could not determine the kernel architecture.])])
 395           rm -f build/arch])
 396
 397 #
 398 # LB_LINUX_TRY_COMPILE
 399 #
 400 # like AC_TRY_COMPILE
 401 #
 402 AC_DEFUN([LB_LINUX_TRY_COMPILE],
 403 [LB_LINUX_COMPILE_IFELSE(
 404         [AC_LANG_SOURCE([LB_LANG_PROGRAM([[$1]], [[$2]])])],
 405         [modules],
 406         [test -s build/conftest.o],
 407         [$3], [$4])])
 408
 409 #
 410 # LB_LINUX_CONFIG
 411 #
 412 # check if a given config option is defined
 413 #
 414 AC_DEFUN([LB_LINUX_CONFIG],[
 415         AC_MSG_CHECKING([if Linux was built with CONFIG_$1])
 416         LB_LINUX_TRY_COMPILE([
 417                 #include <$AUTOCONF_HDIR/autoconf.h>
 418         ],[
 419                 #ifndef CONFIG_$1
 420                 #error CONFIG_$1 not #defined
 421                 #endif
 422         ],[
 423                 AC_MSG_RESULT([yes])
 424                 $2
 425         ],[
 426                 AC_MSG_RESULT([no])
 427                 $3
 428         ])
 429 ])
 430
 431 #
 432 # LB_LINUX_CONFIG_IM
 433 #
 434 # check if a given config option is builtin or as module
 435 #
 436 AC_DEFUN([LB_LINUX_CONFIG_IM],[
 437         AC_MSG_CHECKING([if Linux was built with CONFIG_$1 in or as module])
 438         LB_LINUX_TRY_COMPILE([
 439                 #include <$AUTOCONF_HDIR/autoconf.h>
 440         ],[
 441                 #if !(defined(CONFIG_$1) || defined(CONFIG_$1_MODULE))
 442                 #error CONFIG_$1 and CONFIG_$1_MODULE not #defined
 443                 #endif
 444         ],[
 445                 AC_MSG_RESULT([yes])
 446                 $2
 447         ],[
 448                 AC_MSG_RESULT([no])
 449                 $3
 450         ])
 451 ])
 452
 453 #
 454 # LB_LINUX_TRY_MAKE
 455 #
 456 # like LB_LINUX_TRY_COMPILE, but with different arguments
 457 #
 458 AC_DEFUN([LB_LINUX_TRY_MAKE],
 459         [LB_LINUX_COMPILE_IFELSE(
 460                 [AC_LANG_SOURCE([LB_LANG_PROGRAM([[$1]], [[$2]])])],
 461                 [$3], [$4], [$5], [$6]
 462         )]
 463 )
 464
 465 #
 466 # LB_CONFIG_COMPAT_RDMA
 467 #
 468 AC_DEFUN([LB_CONFIG_COMPAT_RDMA],
 469 [AC_MSG_CHECKING([whether to use Compat RDMA])
 470 # set default
 471 AC_ARG_WITH([o2ib],
 472         AC_HELP_STRING([--with-o2ib=path],
 473                        [build o2iblnd against path]),
 474         [
 475                 case $with_o2ib in
 476                 yes)    O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
 477                         ENABLEO2IB=2
 478                         ;;
 479                 no)     ENABLEO2IB=0
 480                         ;;
 481                 *)      O2IBPATHS=$with_o2ib
 482                         ENABLEO2IB=3
 483                         ;;
 484                 esac
 485         ],[
 486                 O2IBPATHS="$LINUX $LINUX/drivers/infiniband"
 487                 ENABLEO2IB=1
 488         ])
 489 if test $ENABLEO2IB -eq 0; then
 490         AC_MSG_RESULT([no])
 491 else
 492         o2ib_found=false
 493         for O2IBPATH in $O2IBPATHS; do
 494                 if test \( -f ${O2IBPATH}/include/rdma/rdma_cm.h -a \
 495                            -f ${O2IBPATH}/include/rdma/ib_cm.h -a \
 496                            -f ${O2IBPATH}/include/rdma/ib_verbs.h -a \
 497                            -f ${O2IBPATH}/include/rdma/ib_fmr_pool.h \); then
 498                         o2ib_found=true
 499                         break
 500                 fi
 501         done
 502         compatrdma_found=false
 503         if $o2ib_found; then
 504                 if test \( -f ${O2IBPATH}/include/linux/compat-2.6.h \); then
 505                         compatrdma_found=true
 506                         AC_MSG_RESULT([yes])
 507                         AC_DEFINE(HAVE_COMPAT_RDMA, 1, [compat rdma found])
 508                 else
 509                         AC_MSG_RESULT([no])
 510                 fi
 511         fi
 512 fi
 513 ])
 514
 515 #
 516 # LB_CONFIG_OFED_BACKPORTS
 517 #
 518 # include any OFED backport headers in all compile commands
 519 # NOTE: this does only include the backport paths, not the OFED headers
 520 #       adding the OFED headers is done in the lnet portion
 521 AC_DEFUN([LB_CONFIG_OFED_BACKPORTS],
 522 [AC_MSG_CHECKING([whether to use any OFED backport headers])
 523 if test $ENABLEO2IB -eq 0; then
 524         AC_MSG_RESULT([no])
 525 else
 526         if ! $o2ib_found; then
 527                 AC_MSG_RESULT([no])
 528                 case $ENABLEO2IB in
 529                         1) ;;
 530                         2) AC_MSG_ERROR([kernel OpenIB gen2 headers not present]);;
 531                         3) AC_MSG_ERROR([bad --with-o2ib path]);;
 532                         *) AC_MSG_ERROR([internal error]);;
 533                 esac
 534         else
 535                 if ! $compatrdma_found; then
 536                         if test -f $O2IBPATH/config.mk; then
 537                                 . $O2IBPATH/config.mk
 538                         elif test -f $O2IBPATH/ofed_patch.mk; then
 539                                 . $O2IBPATH/ofed_patch.mk
 540                         fi
 541                 fi
 542                 if test -n "$BACKPORT_INCLUDES"; then
 543                         OFED_BACKPORT_PATH="$O2IBPATH/${BACKPORT_INCLUDES/*\/kernel_addons/kernel_addons}/"
 544                         EXTRA_LNET_INCLUDE="-I$OFED_BACKPORT_PATH $EXTRA_LNET_INCLUDE"
 545                         AC_MSG_RESULT([yes])
 546                 else
 547                         AC_MSG_RESULT([no])
 548                 fi
 549         fi
 550 fi
 551 ])
 552
 553 # LC_MODULE_LOADING
 554 # after 2.6.28 CONFIG_KMOD is removed, and only CONFIG_MODULES remains
 555 # so we test if request_module is implemented or not
 556 AC_DEFUN([LC_MODULE_LOADING],
 557 [AC_MSG_CHECKING([if kernel module loading is possible])
 558 LB_LINUX_TRY_MAKE([
 559         #include <linux/kmod.h>
 560 ],[
 561         int myretval=ENOSYS ;
 562         return myretval;
 563 ],[
 564         $makerule OFA_KERNEL_TEST=conftest.i
 565 ],[dnl
 566         grep request_module build/conftest.i |dnl
 567                 grep -v `grep "int myretval=" build/conftest.i |dnl
 568                         cut -d= -f2 | cut -d" "  -f1`dnl
 569                 >/dev/null dnl
 570 ],[
 571         AC_MSG_RESULT(yes)
 572         AC_DEFINE(HAVE_MODULE_LOADING_SUPPORT, 1,
 573                   [kernel module loading is possible])
 574 ],[
 575         AC_MSG_RESULT(no)
 576         AC_MSG_WARN([])
 577         AC_MSG_WARN([Kernel module loading support is highly recommended.])
 578         AC_MSG_WARN([])
 579 ])
 580 ])
 581
 582 #
 583 # LB_PROG_LINUX
 584 #
 585 # linux tests
 586 #
 587 AC_DEFUN([LB_PROG_LINUX],
 588 [LB_LINUX_PATH
 589 LB_LINUX_ARCH
 590 LB_LINUX_SYMVERFILE
 591
 592
 593 LB_LINUX_CONFIG([MODULES],[],[
 594         AC_MSG_ERROR([module support is required to build OFA kernel modules.])
 595 ])
 596
 597 LB_LINUX_CONFIG([MODVERSIONS])
 598
 599 LB_LINUX_CONFIG([KALLSYMS],[],[
 600         AC_MSG_ERROR([compat_mlnx requires that CONFIG_KALLSYMS is enabled in your kernel.])
 601 ])
 602
 603 # 2.6.28
 604 LC_MODULE_LOADING
 605
 606 LB_CONFIG_COMPAT_RDMA
 607
 608 # it's ugly to be doing anything with OFED outside of the lnet module, but
 609 # this has to be done here so that the backports path is set before all of
 610 # the LN_PROG_LINUX checks are done
 611 LB_CONFIG_OFED_BACKPORTS
 612 ])
 613
 614 #
 615 # LB_CHECK_SYMBOL_EXPORT
 616 # check symbol exported or not
 617 # $1 - symbol
 618 # $2 - file(s) for find.
 619 # $3 - do 'yes'
 620 # $4 - do 'no'
 621 #
 622 # 2.6 based kernels - put modversion info into $LINUX/Module.modvers
 623 # or check
 624 AC_DEFUN([LB_CHECK_SYMBOL_EXPORT],
 625 [AC_MSG_CHECKING([if Linux was built with symbol $1 exported])
 626 grep -q -E '[[[:space:]]]$1[[[:space:]]]' $LINUX/$SYMVERFILE 2>/dev/null
 627 rc=$?
 628 if test $rc -ne 0; then
 629         export=0
 630         for file in $2; do
 631                 grep -q -E "EXPORT_SYMBOL.*\($1\)" "$LINUX/$file" 2>/dev/null
 632                 rc=$?
 633                 if test $rc -eq 0; then
 634                         export=1
 635                         break;
 636                 fi
 637         done
 638         if test $export -eq 0; then
 639                 AC_MSG_RESULT([no])
 640                 $4
 641         else
 642                 AC_MSG_RESULT([yes])
 643                 $3
 644         fi
 645 else
 646         AC_MSG_RESULT([yes])
 647         $3
 648 fi
 649 ])
 650
 651 #
 652 # Like AC_CHECK_HEADER but checks for a kernel-space header
 653 #
 654 m4_define([LB_CHECK_LINUX_HEADER],
 655 [AS_VAR_PUSHDEF([ac_Header], [ac_cv_header_$1])dnl
 656 AC_CACHE_CHECK([for $1], ac_Header,
 657                [LB_LINUX_COMPILE_IFELSE([LB_LANG_PROGRAM([@%:@include <$1>])],
 658                                   [modules],
 659                                   [test -s build/conftest.o],
 660                                   [AS_VAR_SET(ac_Header, [yes])],
 661                                   [AS_VAR_SET(ac_Header, [no])])])
 662 AS_IF([test AS_VAR_GET(ac_Header) = yes], [$2], [$3])[]dnl
 663 AS_VAR_POPDEF([ac_Header])dnl
 664 ])
 665
 666 #
 667 # LB_USES_DPKG
 668 #
 669 # Determine if the target is a dpkg system or rpm
 670 #
 671 AC_DEFUN([LB_USES_DPKG],
 672 [
 673 AC_MSG_CHECKING([if this distro uses dpkg])
 674 case `lsb_release -i -s 2>/dev/null` in
 675         Ubuntu | Debian)
 676                 AC_MSG_RESULT([yes])
 677                 uses_dpkg=yes
 678                 ;;
 679         *)
 680                 AC_MSG_RESULT([no])
 681                 uses_dpkg=no
 682                 ;;
 683 esac
 684 ])
 685
 686 #
 687 # LB_PROG_CC
 688 #
 689 # checks on the C compiler
 690 #
 691 AC_DEFUN([LB_PROG_CC],
 692 [AC_PROG_RANLIB
 693 AC_CHECK_TOOL(LD, ld, [no])
 694 AC_CHECK_TOOL(OBJDUMP, objdump, [no])
 695 AC_CHECK_TOOL(STRIP, strip, [no])
 696
 697 # ---------  unsigned long long sane? -------
 698 AC_CHECK_SIZEOF(unsigned long long, 0)
 699 echo "---> size SIZEOF $SIZEOF_unsigned_long_long"
 700 echo "---> size SIZEOF $ac_cv_sizeof_unsigned_long_long"
 701 if test $ac_cv_sizeof_unsigned_long_long != 8 ; then
 702         AC_MSG_ERROR([** we assume that sizeof(long long) == 8.])
 703 fi
 704
 705 if test $target_cpu == "powerpc64"; then
 706         AC_MSG_WARN([set compiler with -m64])
 707         CFLAGS="$CFLAGS -m64"
 708         CC="$CC -m64"
 709 fi
 710 ])
 711
 712 # LB_CONTITIONALS
 713 #
 714 AC_DEFUN([LB_CONDITIONALS],
 715 [
 716 AM_CONDITIONAL(ARCH_x86, test x$target_cpu = "xx86_64" -o x$target_cpu = "xi686")
 717
 718 AC_OUTPUT
 719
 720 cat <<_ACEOF
 721
 722 CC:            $CC
 723 LD:            $LD
 724 CFLAGS:        $CFLAGS
 725 EXTRA_KCFLAGS: $EXTRA_KCFLAGS
 726
 727 Type 'make' to build kernel modules.
 728 _ACEOF
 729 ])
 730
 731 #
 732 # SET_BUILD_ARCH
 733 #
 734 AC_DEFUN([SET_BUILD_ARCH],
 735 [
 736 AC_MSG_CHECKING([for build ARCH])
 737 SRCARCH=${ARCH:-$(uname -m)}
 738 SRCARCH=$(echo $SRCARCH | sed -e s/i.86/x86/ \
 739                         -e s/x86_64/x86/ \
 740                         -e s/ppc.*/powerpc/ \
 741                         -e 's/powerpc64/powerpc/' \
 742                         -e s/aarch64.*/arm64/ \
 743                         -e s/s390x/s390/)
 744
 745 # very old kernels had different strucure under arch dir
 746 if [[ "X$SRCARCH" == "Xx86" ]] && ! [[ -d "$LINUX/arch/x86" ]]; then
 747         SRCARCH=x86_64
 748 fi
 749
 750 AC_MSG_RESULT([ARCH=$ARCH, SRCARCH=$SRCARCH])
 751 ])
 752
 753 #
 754 # LB_LINUX_CONFIG_VALUE
 755 #
 756 #  get a given config's option value
 757 #
 758 AC_DEFUN([LB_LINUX_CONFIG_VALUE],[
 759         AC_MSG_CHECKING([get value of CONFIG_$1])
 760         if (grep -q "^#define CONFIG_$1 " $LINUX_OBJ/include/$AUTOCONF_HDIR/autoconf.h 2>/dev/null); then
 761                 res=$(grep "^#define CONFIG_$1 " $LINUX_OBJ/include/$AUTOCONF_HDIR/autoconf.h 2>/dev/null | cut -d' ' -f'3')
 762                 AC_MSG_RESULT([$1 value is '$res'])
 763                 $2
 764         else
 765                 AC_MSG_RESULT([$1 in not defined in autoconf.h])
 766                 $3
 767         fi
 768 ])