configure.in

dnl
dnl Configure for MPACK
dnl

AC_INIT(mpack, 0.6.7)
AC_CONFIG_HEADER(include/config.h) 
AM_INIT_AUTOMAKE
AC_PROG_CC
AC_HEADER_STDC
AC_PROG_CXX
AC_CANONICAL_HOST
AC_SUBST(LIBTOOL_DEPS)
AC_OPENMP
AC_LANG_PUSH([C++])
AC_OPENMP
AC_LANG_POP
AC_CONFIG_MACRO_DIR([m4])
AC_PROG_LIBTOOL

IS_MINGW=0
case "$host" in
        *-mingw32*) # mingw
	  IS_MINGW=1
        ;;
        *)
esac
AM_CONDITIONAL(IS_MINGW, test x$IS_MINGW = x1)

IS_MACOSX=0
case "$host" in
         *apple-darwin*) # MacOSX
	  IS_MACOSX=1
        ;;
        *)
esac
AM_CONDITIONAL(IS_MACOSX, test x$IS_MACOSX = x1)

AC_ARG_ENABLE(double,
[  --enable-double    Enable double version],
[case "${enableval}" in
  yes) with_double=yes ;;
  no)  with_double=no  ;;
  *) AC_MSG_ERROR(bad value ${enableval} for --enable-double) ;;
esac],[with_double=yes])
AM_CONDITIONAL(ENABLE_DOUBLE, test x$with_double = xyes)

AC_ARG_ENABLE(testing,
[  --enable-testing    Enable testing with BLAS and LAPACK],
[case "${enableval}" in
  yes) with_testing=yes ;;
  no)  with_testing=no  ;;
  *) AC_MSG_ERROR(bad value ${enableval} for --enable-testing) ;;
esac],[with_testing=yes])
if test x"$IS_MACOSX" = x"1"; then
  echo "On MacOSX, testing disabled"
  with_testing=no;	
fi
if test x"$IS_MINGW" = x"1"; then
  echo "On Windows, testing disabled"
  with_testing=no;	
fi
AM_CONDITIONAL(ENABLE_TESTING, test x$with_testing = xyes)

AC_ARG_ENABLE(benchmark,
[  --enable-benchmark    Enable benchmark with BLAS and LAPACK],
[case "${enableval}" in
  yes) with_benchmark=yes ;;
  no)  with_benchmark=no  ;;
  *) AC_MSG_ERROR(bad value ${enableval} for --enable-benchmark) ;;
esac],[with_benchmark=yes])
AM_CONDITIONAL(ENABLE_BENCHMARK, test x$with_benchmark = xyes)

ENABLE_DOUBLE=0
if test x"$with_double" = x"yes"; then
  echo "Using double for debugging purpose"
  ENABLE_DOUBLE=1
fi

case "$host" in
        *apple-darwin*) # MacOSX
          BLAS_LIBS="-framework vecLib"
          LAPACK_LIBS=""
          FLIBS=""
          AC_SUBST(BLAS_LIBS)
          AC_SUBST(LAPACK_LIBS)
          AC_SUBST(FLIBS)
        ;;
        *mingw*) # Windows
        ;; 
        *)
dnl check F77/BLAS/LAPACK
    if  test x"$with_testing" = x"yes" -o x"$with_benchmark" = x"yes" ; then
        AC_PROG_F77
        AC_F77_LIBRARY_LDFLAGS
        AC_F77_WRAPPERS
        AC_SUBST(FLIBS)
        HAVE_BLAS=""
        dnl default blas name is libblas, thus we pass -lblas.
        if test x"$BLAS_LIBS" = x; then
          BLAS_LIBS="-lblas"
        fi
        save_LIBS="$LIBS"
        AC_F77_FUNC(dgemm)
        LIBS="$LIBS $BLAS_LIBS $FLIBS"
        AC_CHECK_FUNC($dgemm, [HAVE_BLAS=yes])
        LIBS="$save_LIBS"
        AC_SUBST(BLAS_LIBS)
          
        if test x"$HAVE_BLAS" != xyes; then
          if test x"$with_testing" = xyes; then
            echo "Please install one of your favorate BLAS"
            echo "BLAS:      http://www.netlib.org/blas/"
            echo "ATLAS:     http://math-atlas.sourceforge.net/"
            echo "GotoBLAS:  http://www.tacc.utexas.edu/resources/software/"
            AC_MSG_ERROR([No BLAS found])
	  fi
        fi
        dnl Check whether we can call LAPACK subroutines
        HAVE_LAPACK=""
        dnl default lapack name is liblapack, thus we pass -llapack.
        if test x"$LAPACK_LIBS" = x; then
          LAPACK_LIBS="-llapack"
        fi
        save_LIBS="$LIBS"
        AC_F77_FUNC(dsyev)
        LIBS="$LIBS $LAPACK_LIBS $BLAS_LIBS $FLIBS"
        AC_CHECK_FUNC($dsyev, [HAVE_LAPACK=yes])
        LIBS="$save_LIBS"
        AC_SUBST(LAPACK_LIBS)
          
        if test x"$HAVE_LAPACK" != xyes; then
          echo "Please install one of your favorate LAPACK"
          echo "LAPACK:   http://www.netlib.org/lapack/"
          AC_MSG_ERROR([No LAPACK found])
        fi
    fi
      ;;
esac

dnl BLAS/LAPACK wrapper (xBLAS approach)
if test x"$with_wrapper" = xyes; then
  echo "Enable BLAS/LAPACK wrapper"
  ENABLE_WRAPPER=1
else
  echo "DISABLE WRAPPER"
  ENABLE_WRAPPER=0
fi
AM_CONDITIONAL(ENABLE_WRAPPER, test x$ENABLE_WRAPPER = 1)

##GMP start
AC_ARG_WITH(system-gmp,
[  --with-system-gmp      Use GMP library already on system
],,with_system_gmp="no")
GMP_INCLUDEDIR=external/i/GMP/include/
GMP_LIBDIR=external/i/GMP/lib/

if test x$with_system_gmp = x"yes"; then
        HAVE_GMP=""
        AC_CHECK_HEADER(gmp.h, HAVE_GMP_HEADER=yes)
        if test x$HAVE_GMP_HEADER = xyes; then
            save_LDFLAGS="$LDFLAGS"
            LDFLAGS="$LDFLAGS -L$GMP_LIBDIR"
            AC_CHECK_LIB(gmp, __gmpz_init, [GMP_LIBS="-lgmpxx -lgmp"; HAVE_GMP=yes])
            LDFLAGS=$save_LDFLAGS
        fi
        if test x$HAVE_GMP != xyes; then
              echo "No GMP with C++ wrapper found; using internal one instead"
        else
              echo "GMP Found: using GMP comes with the system"
              SYSTEM_GMP=yes
	      GMP_INCLUDEDIR=.
    	      GMP_LIBDIR=.
        fi
else
	echo "Using GMP comes with MPACK"
fi
AM_CONDITIONAL(SYSTEM_GMP, test x$SYSTEM_GMP = xyes)
AC_SUBST(GMP_INCLUDEDIR)
AC_SUBST(GMP_LIBDIR)
##GMP end

##MPFR start
AC_ARG_WITH(system-mpfr,
[  --with-system-mpfr      Use MPFR library already on system
],,with_system_mpfr="no")
MPFR_INCLUDEDIR=external/i/MPFR/include/
MPFR_LIBDIR=external/i/MPFR/lib/

if test x$with_system_mpfr = x"yes"; then
        HAVE_MPFR=""
        AC_CHECK_HEADER(mpfr.h, HAVE_MPFR_HEADER=yes)
        if test x$HAVE_MPFR_HEADER = xyes; then
            save_LDFLAGS="$LDFLAGS"
            LDFLAGS="$LDFLAGS -L$MPFR_LIBDIR"
            AC_CHECK_LIB(mpfr, mpfr_init, [MPFR_LIBS="-lmpfr -lgmp"; HAVE_MPFR=yes])
            LDFLAGS=$save_LDFLAGS
        fi
        if test x$HAVE_MPFR != xyes; then
              echo "No MPFR found; using internal one instead"
        else
              echo "MPFR found: using MPFR comes with the system"
              SYSTEM_MPFR=yes
	      MPFR_INCLUDEDIR=.
	      MPFR_LIBDIR=.
        fi
else
	echo "Using MPFR comes with MPACK"
fi
AM_CONDITIONAL(SYSTEM_MPFR, test x$SYSTEM_MPFR = xyes)
AC_SUBST(MPFR_INCLUDEDIR)
AC_SUBST(MPFR_LIBDIR)
##MPFR end

##MPC start
AC_ARG_WITH(system-mpc,
[  --with-system-mpc      Use MPC library already on system
],,with_system_mpc="no")
MPC_INCLUDEDIR=external/i/MPC/include/
MPC_LIBDIR=external/i/MPC/lib/

if test x$with_system_mpc = x"yes"; then
        HAVE_MPC=""
        AC_CHECK_HEADER(mpc.h, HAVE_MPC_HEADER=yes)
        if test x$HAVE_MPC_HEADER = xyes; then
            save_LDFLAGS="$LDFLAGS"
            LDFLAGS="$LDFLAGS -L$MPC_LIBDIR"
            AC_CHECK_LIB(mpc, mpc_init2, [MPC_LIBS="-lmpc -lmpfr -lgmp"; HAVE_MPC=yes])
            LDFLAGS=$save_LDFLAGS
        fi
        if test x$HAVE_MPC != xyes; then
              echo "No MPC found; using internal one instead"
        else
              echo "MPC found: using MPC comes with the system"
              SYSTEM_MPC=yes
	      MPC_INCLUDEDIR=.
	      MPC_LIBDIR=.
        fi
else
	echo "Using MPC comes with MPACK"
fi
AM_CONDITIONAL(SYSTEM_MPC, test x$SYSTEM_MPC = xyes)
AC_SUBST(MPC_INCLUDEDIR)
AC_SUBST(MPC_LIBDIR)
##MPC end


##QD start
AC_ARG_WITH(system-qd,
[  --with-system-qd      Use QD library already on system
],,with_system_qd="no")
QD_INCLUDEDIR=external/i/QD/include/
QD_LIBDIR=external/i/QD/lib/

if test x$with_system_qd = x"yes"; then
        HAVE_QD=""
        AC_LANG_PUSH([C++])
        AC_CHECK_HEADER(qd/qd_real.h, HAVE_QD_HEADER=yes)
        if test x$HAVE_QD_HEADER = xyes; then
            save_LDFLAGS="$LDFLAGS"
            LDFLAGS="$LDFLAGS -L$QD_LIBDIR"
            AC_CHECK_LIB(qd, c_qd_sqrt, [QD_LIBS="-lqd"; HAVE_QD=yes])
            LDFLAGS=$save_LDFLAGS
        fi
        if test x$HAVE_QD != xyes; then
              echo "No QD found; using internal one instead"
        else
              echo "QD found: using QD comes with the system"
              SYSTEM_QD=yes
	      QD_INCLUDEDIR=.
	      QD_LIBDIR=.
        fi
else
	echo "Using QD comes with MPACK"
fi
AM_CONDITIONAL(SYSTEM_QD, test x$SYSTEM_QD = xyes)
AC_SUBST(QD_INCLUDEDIR)
AC_SUBST(QD_LIBDIR)
##QD end

AC_CONFIG_FILES([
mpfrc++/Makefile
mblas/reference/Makefile
mblas/optimized/Makefile
mblas/optimized/gmp/Makefile
mblas/optimized/mpfr/Makefile
mblas/optimized/qd/Makefile
mblas/optimized/dd/Makefile
mblas/optimized/double/Makefile
mblas/blaswrapper/Makefile
mblas/testing/Makefile
mblas/testing/gmp/Makefile
mblas/testing/mpfr/Makefile
mblas/testing/qd/Makefile
mblas/testing/dd/Makefile
mblas/testing/double/Makefile
mblas/benchmark/Makefile
mblas/benchmark/Raxpy/Makefile
mblas/benchmark/Rcopy/Makefile
mblas/benchmark/Rdot/Makefile
mblas/benchmark/Rgemv/Makefile
mblas/benchmark/Rgemm/Makefile
mblas/Makefile
mlapack/library/Makefile
mlapack/testing/Makefile
mlapack/testing/gmp/Makefile
mlapack/testing/mpfr/Makefile
mlapack/testing/qd/Makefile
mlapack/testing/dd/Makefile
mlapack/testing/double/Makefile
mlapack/optimized/Makefile
mlapack/optimized/gmp/Makefile
mlapack/optimized/mpfr/Makefile
mlapack/optimized/qd/Makefile
mlapack/optimized/dd/Makefile
mlapack/optimized/double/Makefile
mlapack/Makefile
external/Makefile
external/dummy/Makefile
external/gmp/Makefile
external/mpfr/Makefile
external/mpc/Makefile
external/qd/Makefile
examples/Makefile
examples/mblas/Makefile
examples/mlapack/Makefile
])

AC_OUTPUT(Makefile)