#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.67])
AC_INIT([codes-base], [0.2], [http://trac.mcs.anl.gov/projects/codes/newticket],[],[http://trac.mcs.anl.gov/projects/codes/wiki])

AC_CANONICAL_TARGET
AC_CANONICAL_SYSTEM
AC_CANONICAL_HOST

AM_INIT_AUTOMAKE([foreign subdir-objects -Wall])

m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])

AC_CONFIG_SRCDIR([README.txt])
AC_CONFIG_HEADERS([codes_base_config.h])

AX_PROG_BISON([],[AC_MSG_WARN([Could not find bison])])
AX_PROG_FLEX([],[AC_MSG_WARN([Could not find flex])])
AC_SUBST([BISON])
AC_SUBST([FLEX])

# Checks for programs.
AC_PROG_CC
AM_PROG_CC_C_O
AC_PROG_CXX
AC_PROG_CXXCPP
AC_PROG_RANLIB

AC_REQUIRE_CPP

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([stdlib.h string.h unistd.h execinfo.h pthread.h malloc.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_INT8_T
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T

# Checks for library functions.
AC_CHECK_FUNCS([memset])
AC_CHECK_LIB([pthread],[pthread_create],,[AC_MSG_ERROR([Could not find pthread_create!])])
AC_CHECK_LIB([m],[sqrt],,[AC_MSG_ERROR([Could not find sqrt!])])


AX_PROG_BISON_CLFEATURES([],[AC_MSG_WARN([Could not find bison])],
[bison_ok="yes"], [bison_ok="no"])
AC_SUBST([bison_ok])

dnl Check to see if CC is an MPI compiler
AC_MSG_CHECKING(whether the mpicc compiler works)
AC_TRY_COMPILE([#include <mpi.h>], [int ret = MPI_Init(0, (void*)0)],
    AC_MSG_RESULT(yes),
    AC_MSG_RESULT(no)
    AC_MSG_ERROR(CC doesn't appear to be a valid MPI compiler.  See INSTALL document or try adding CC=mpicc to your configure command line.)
)

#
# clear ROSS options
#
ROSS_CFLAGS=""
ROSS_CPPFLAGS=""
ROSS_LDFLAGS=""
ROSS_LIBS=""
ENABLE_ROSS=0
AC_ARG_WITH([ross],[AS_HELP_STRING([--with-ross@<:@=DIR@:>@],
                        [location of ROSS installation])])
#
# if we have ROSS, add ROSS flags
#
if test "x${with_ross}" != "x" ; then
    ORIG_LDFLAGS="${LDFLAGS}"
    ORIG_CPPFLAGS="${CPPFLAGS}"
    ORIG_LIBS="${LIBS}"
    ORIG_CFLAGS="${CFLAGS}"

    checkpath="${with_ross}/bin"
    ROSS_CONFIG=""
    AC_CHECK_PROGS(ROSS_CONFIG, [ross-config], [NOT_FOUND], [$checkpath])
    if test "${ROSS_CONFIG}" = "NOT_FOUND" ; then 
        AC_MSG_ERROR(ROSS not found at: $with_ross)
    fi

    if test "${ROSS_CONFIG}x" != "x" ; then
    
        LDFLAGS=`${with_ross}/bin/ross-config --ldflags`
        CFLAGS=`${with_ross}/bin/ross-config --cflags`
        CPPFLAGS=`${with_ross}/bin/ross-config --cflags`
        LIBS=`${with_ross}/bin/ross-config --libs`

        ENABLE_ROSS=1
        AC_CHECK_LIB([ROSS],[tw_init],,[ENABLE_ROSS=;])
        if test -z "$ENABLE_ROSS" ; then
            ENABLE_ROSS=0
            AC_MSG_ERROR([Could not find usable ROSS library])
        fi

        ENABLE_ROSS=1

        #
        # TODO this is weird... need to add -c back to CPPFLAGS or CHECK_HEADERS
        # tries to compile an exe using a c file that includes ross.h and no
        # main()
        #
        CPPFLAGS_2="${CPPFLAGS}"
        CPPFLAGS="-c ${CPPFLAGS}"
        AC_CHECK_HEADERS([ross.h], [], [ENABLE_ROSS=;])
        if test -z "$ENABLE_ROSS" ; then
            ENABLE_ROSS=0
            AC_MSG_ERROR([Could not find usable ross.h])
        else
            CPPFLAGS="${CPPFLAGS_2}"
            checkpath="$PATH"
            AC_SUBST([ROSS_LDFLAGS],["${LDFLAGS}"])
            AC_SUBST([ROSS_CFLAGS],["${CFLAGS}"])
            AC_SUBST([ROSS_CPPFLAGS],["${CPPFLAGS}"])
            AC_SUBST([ROSS_LIBS],["${LIBS}"])
        fi
        CFLAGS="${ORIG_CFLAGS}"
        CPPFLAGS="${ORIG_CPPFLAGS}"
        LDFLAGS="${ORIG_LDFLAGS}"
        LIBS="${ORIG_LIBS}"

        AC_DEFINE([HAVE_ROSS],[1],[If ROSS is supported on target build platform])
    fi
else
    ENABLE_ROSS=0
    AC_MSG_ERROR([Could not find usable ROSS installation, try --with-ross=DIR])
fi

# put include files in a codes/ subdir 
includedir="${includedir}/codes"

#
# To reactivate rewriting of the codesparser.y file,
# uncomment next line.
#
# NOTE: this will force the latest bison for building,
# even when building from a dist.
#
#
dnl AC_CONFIG_FILES([src/iokernellang/codesparser.y])

AC_CONFIG_FILES([Makefile])

AC_OUTPUT