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      1 # This file is part of GCC.
      2 #
      3 # GCC is free software; you can redistribute it and/or modify it under
      4 # the terms of the GNU General Public License as published by the Free
      5 # Software Foundation; either version 3, or (at your option) any later
      6 # version.
      7 #
      8 # GCC is distributed in the hope that it will be useful, but WITHOUT
      9 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
     10 # FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
     11 # for more details.
     12 #
     13 # You should have received a copy of the GNU General Public License
     14 # along with GCC; see the file COPYING3.  If not see
     15 # <http://www.gnu.org/licenses/>.
     16 #
     17 # Contributed by Richard Guenther <rguenther (a] suse.de>
     18 # Based on cloog.m4
     19 
     20 # ISL_INIT_FLAGS ()
     21 # -------------------------
     22 # Provide configure switches for isl support.
     23 # Initialize isllibs/islinc according to the user input.
     24 AC_DEFUN([ISL_INIT_FLAGS],
     25 [
     26   AC_ARG_WITH([isl-include],
     27     [AS_HELP_STRING(
     28       [--with-isl-include=PATH],
     29       [Specify directory for installed isl include files])])
     30   AC_ARG_WITH([isl-lib],
     31     [AS_HELP_STRING(
     32       [--with-isl-lib=PATH],
     33       [Specify the directory for the installed isl library])])
     34 
     35   AC_ARG_ENABLE(isl-version-check,
     36     [AS_HELP_STRING(
     37       [--disable-isl-version-check],
     38       [disable check for isl version])],
     39     ENABLE_ISL_CHECK=$enableval,
     40     ENABLE_ISL_CHECK=yes)
     41   
     42   # Initialize isllibs and islinc.
     43   case $with_isl in
     44     no)
     45       isllibs=
     46       islinc=
     47       ;;
     48     "" | yes)
     49       ;;
     50     *)
     51       isllibs="-L$with_isl/lib"
     52       islinc="-I$with_isl/include"
     53       ;;
     54   esac
     55   if test "x${with_isl_include}" != x ; then
     56     islinc="-I$with_isl_include"
     57   fi
     58   if test "x${with_isl_lib}" != x; then
     59     isllibs="-L$with_isl_lib"
     60   fi
     61   dnl If no --with-isl flag was specified and there is in-tree isl
     62   dnl source, set up flags to use that and skip any version tests
     63   dnl as we cannot run them before building isl.
     64   if test "x${islinc}" = x && test "x${isllibs}" = x \
     65      && test -d ${srcdir}/isl; then
     66     isllibs='-L$$r/$(HOST_SUBDIR)/isl/'"$lt_cv_objdir"' '
     67     islinc='-I$$r/$(HOST_SUBDIR)/isl/include -I$$s/isl/include'
     68     ENABLE_ISL_CHECK=no
     69     AC_MSG_WARN([using in-tree isl, disabling version check])
     70   fi
     71 
     72   isllibs="${isllibs} -lisl"
     73 ]
     74 )
     75 
     76 # ISL_REQUESTED (ACTION-IF-REQUESTED, ACTION-IF-NOT)
     77 # ----------------------------------------------------
     78 # Provide actions for failed isl detection.
     79 AC_DEFUN([ISL_REQUESTED],
     80 [
     81   AC_REQUIRE([ISL_INIT_FLAGS])
     82 
     83   if test "x${with_isl}" = xno; then
     84     $2
     85   elif test "x${with_isl}" != x \
     86     || test "x${with_isl_include}" != x \
     87     || test "x${with_isl_lib}" != x ; then
     88     $1
     89   else
     90     $2
     91   fi
     92 ]
     93 )
     94 
     95 # ISL_CHECK_VERSION ISL_CHECK_VERSION ()
     96 # ----------------------------------------------------------------
     97 # Test whether isl contains functionality added to the minimum expected version.
     98 AC_DEFUN([ISL_CHECK_VERSION],
     99 [
    100   if test "${ENABLE_ISL_CHECK}" = yes ; then
    101     _isl_saved_CFLAGS=$CFLAGS
    102     _isl_saved_LDFLAGS=$LDFLAGS
    103     _isl_saved_LIBS=$LIBS
    104 
    105     CFLAGS="${_isl_saved_CFLAGS} ${islinc} ${gmpinc}"
    106     LDFLAGS="${_isl_saved_LDFLAGS} ${isllibs} ${gmplibs}"
    107     LIBS="${_isl_saved_LIBS} -lisl -lgmp"
    108 
    109     AC_MSG_CHECKING([for isl 0.15 or later])
    110     AC_TRY_LINK([#include <isl/schedule.h>],
    111                 [isl_options_set_schedule_serialize_sccs (NULL, 0);],
    112                 [gcc_cv_isl=yes],
    113                 [gcc_cv_isl=no])
    114     AC_MSG_RESULT([$gcc_cv_isl])
    115 
    116     if test "${gcc_cv_isl}" = no ; then
    117       AC_MSG_RESULT([required isl version is 0.15 or later])
    118     fi
    119 
    120     CFLAGS=$_isl_saved_CFLAGS
    121     LDFLAGS=$_isl_saved_LDFLAGS
    122     LIBS=$_isl_saved_LIBS
    123   fi
    124 ]
    125 )
    126 
    127 # ISL_IF_FAILED (ACTION-IF-FAILED)
    128 # ----------------------------------
    129 # Executes ACTION-IF-FAILED, if GRAPHITE was requested and
    130 # the checks failed.
    131 AC_DEFUN([ISL_IF_FAILED],
    132 [
    133   ISL_REQUESTED([graphite_requested=yes], [graphite_requested=no])
    134   
    135   if test "${gcc_cv_isl}" = no ; then
    136     isllibs=
    137     islinc=
    138   fi
    139 
    140   if test "${graphite_requested}" = yes \
    141     && test "x${isllibs}" = x \
    142     && test "x${islinc}" = x ; then
    143     $1
    144   fi
    145 ]
    146 )
    147