hdf5/configure.in

dnl Process this file with autoconf to produce configure.
dnl
dnl Copyright (C) 1997 National Center for Supercomputing Applications.
dnl                    All rights reserved.

dnl ----------------------------------------------------------------------
dnl Initialize configure.
dnl
AC_REVISION($Id$)
AC_INIT(src/H5.c)
AC_CONFIG_HEADER(src/H5config.h)
AC_OUTPUT_COMMANDS([
   echo "creating src/H5pubconf.h"
   sed 's/#define /#define H5_/' <src/H5config.h |\
     sed 's/#undef /#undef H5_/' >pubconf
   if test ! -f src/H5pubconf.h; then
      /bin/mv -f pubconf src/H5pubconf.h
   elif (diff pubconf src/H5pubconf.h >/dev/null); then
      /bin/rm -f pubconf
      echo "src/H5pubconf.h is unchanged"
   else
      /bin/mv -f pubconf src/H5pubconf.h
   fi
])
AC_CONFIG_AUX_DIR(bin)
AC_CANONICAL_HOST
AC_SUBST(CPPFLAGS)

dnl ----------------------------------------------------------------------
dnl Dump all shell variables values.
dnl
AC_MSG_CHECKING(shell variables initial values)
set >&5
AC_MSG_RESULT(done)

dnl ----------------------------------------------------------------------
dnl Check that the cache file was build on the same host as what we're
dnl running on now.
dnl
AC_CACHE_CHECK(for cached host,hdf5_cv_host,hdf5_cv_host="none");
if test $hdf5_cv_host = "none"; then
   hdf5_cv_host=$host
elif test $hdf5_cv_host != $host; then
   echo "The config.cache file was generated on $hdf5_cv_host but"
   echo "this is $host.  Please remove that file and try again."
   AC_MSG_ERROR(config.cache file is invalid)
fi

dnl ----------------------------------------------------------------------
dnl Source any special files that we need.  These files normally aren't
dnl present but can be used by the maintainers to fine tune things like
dnl turning on debug or profiling flags for the compiler.  The search order
dnl is:
dnl
dnl	CPU-VENDOR-OS
dnl	VENDOR-OS
dnl	CPU-OS
dnl	CPU-VENDOR
dnl	OS
dnl	VENDOR
dnl	CPU
dnl
dnl If the `OS' ends with a version number then remove it. For instance,
dnl `freebsd3.1' would become `freebsd'
case $host_os in
   aix4.*)
      host_os_novers=aix4.x
      ;;
   freebsd*)
      host_os_novers=freebsd
      ;;
   irix5.*)
      host_os_novers=irix5.x
      ;;
   irix6.*)
      host_os_novers=irix6.x
      ;;
   osf4.*)
      host_os_novers=osf4.x
      ;;
   solaris2.*)
      host_os_novers=solaris2.x
      ;;
   *)
      host_os_novers=$host_os
      ;;
esac

host_config="none"
for f in $host_cpu-$host_vendor-$host_os \
	 $host_cpu-$host_vendor-$host_os_novers \
	 $host_vendor-$host_os \
         $host_vendor-$host_os_novers \
	 $host_cpu-$host_os \
         $host_cpu-$host_os_novers \
         $host_cpu-$host_vendor \
	 $host_os \
	 $host_os_novers \
	 $host_vendor \
	 $host_cpu ; do
   AC_MSG_CHECKING(for config $f)
   if test -f "$srcdir/config/$f"; then
      host_config=$srcdir/config/$f
      AC_MSG_RESULT(found)
      break
   fi
   AC_MSG_RESULT(no)
done
if test $host_config != "none"; then
   CC_BASENAME="`echo $CC |cut -f1 -d' ' |xargs basename 2>/dev/null`"
   . $host_config
fi

dnl Source any special site-specific file
hname="`hostname`"
while test -n "$hname"; do
   file=$srcdir/config/site-specific/host-$hname
   AC_MSG_CHECKING(for config $file)
   if test -f "$file"; then
      . $file
      AC_MSG_RESULT(found)
      break
   fi
   AC_MSG_RESULT(no)
   hname_tmp=$hname
   hname="`echo $hname | cut -d. -f2-99`"
   test "$hname_tmp" = "$hname" && break
done

dnl ----------------------------------------------------------------------
dnl Check for programs.
dnl
AC_PROG_CC
CC_BASENAME="`echo $CC |cut -f1 -d' ' | xargs basename 2>/dev/null`"

AC_SUBST(config_dirs) config_dirs=""

dnl ----------------------------------------------------------------------
dnl Check if they would like the Fortran interface compiled
dnl
AC_MSG_CHECKING(if fortran interface enabled)
AC_ARG_ENABLE(fortran,
   [  --enable-fortran        Compile the Fortran interface [default=no]],
   HDF_FORTRAN=$enableval)

if test "X$HDF_FORTRAN" = "Xyes"; then
   echo "yes"
   if test -z "$config_dirs"; then
      config_dirs="fortran"
   else
      config_dirs="${config_dirs} fortran"
   fi
else
   echo "no"
fi

dnl ----------------------------------------------------------------------
dnl Check if they would like the C++ interface compiled
dnl
AC_MSG_CHECKING(if c++ interface enabled)
AC_ARG_ENABLE(cxx,
   [  --enable-cxx            Compile the C++ interface [default=no]],
   HDF_CXX=$enableval)

if test "X$HDF_CXX" = "Xyes"; then
   echo "yes"
   if test -z "$config_dirs"; then
      config_dirs="c++"
   else
      config_dirs="${config_dirs} c++"
   fi
else
   echo "no"
fi

dnl Run configure in the subdirectories if specified
AC_CONFIG_SUBDIRS(${config_dirs})

dnl ----------------------------------------------------------------------
dnl If we should build only static executables
dnl
AC_MSG_CHECKING(if should build only statically linked executables)
AC_ARG_ENABLE(static_exec,
   [  --enable-static-exec    Build only statically linked executables [default=no]],
   STATIC_EXEC=$enableval)

if test "X$STATIC_EXEC" = "Xyes"; then
   echo "yes"
   LT_STATIC_EXEC="-all-static"
else
   echo "no"
   LT_STATIC_EXEC=""
fi
AC_SUBST(LT_STATIC_EXEC)

dnl ----------------------------------------------------------------------
dnl Check which archiving tool to use. This needs to be done before
dnl the AM_PROG_LIBTOOL macro.
dnl
if test -z "$AR"; then
   AC_CHECK_PROGS(AR,ar xar,:,$PATH)
fi
AC_SUBST(AR)

dnl Export the AR macro so that it will be placed in the libtool file
dnl correctly.
export AR

AC_PROG_MAKE_SET
AC_PROG_INSTALL
AC_LIBTOOL_DLOPEN
AM_PROG_LIBTOOL

AC_MSG_CHECKING(make)
AC_SUBST_FILE(DEPEND)
if test "`${MAKE-make} --version -f /dev/null 2>/dev/null |\
	sed -n 1p|cut -c1-8`" = "GNU Make"; then
   AC_MSG_RESULT(GNU make)
   GMAKE=yes
   if test "X$GCC" = "Xyes"; then
      DEPEND=config/depend1
   else
      DEPEND=config/depend2
   fi
else
   AC_MSG_RESULT(generic)
fi

dnl How do we include another file into a Makefile?
if test -z "$DEPEND"; then
   AC_MSG_CHECKING(how to include a makefile)

   dnl The include file contains the target for `foo'
   cat >makeinc <<EOF
foo:
	@:
EOF

   while true; do #for break
      dnl pmake. We have to be careful because some pmake think that the
      dnl contents of the MAKE environment variable is a target.
      echo '.include <makeinc>' >maketest
      if (MAKE= ${MAKE-make} -f maketest foo) >/dev/null 2>&1; then
         AC_MSG_RESULT([.include <FILE>])
         DEPEND=config/depend3
         break
      fi

      dnl Most make's use `include FILE'
      echo 'include makeinc' >maketest
      if (${MAKE-make} -f maketest foo) >/dev/null 2>&1; then
         AC_MSG_RESULT(include FILE)
         DEPEND=config/depend4
         break;
      fi

      dnl default
      AC_MSG_RESULT(you have a deficient make command)
      DEPEND=config/dependN
      break
   done
   rm makeinc maketest
fi

dnl ----------------------------------------------------------------------
dnl Sometimes makes think the `.PATH:' appearing before the first rule
dnl with an action should override the `all' default target. So we have
dnl to decide what the proper syntax is.
dnl
AC_MSG_CHECKING(how make searches directories)
while true; do #for break
   # The most common method is `VPATH=DIR1 DIR2 ...'
   cat >maketest <<EOF
VPATH=$srcdir/config $srcdir/src $srcdir/bin
.c.o:
	cp $< H5.o

foo: H5.o
	/bin/rm -f H5.o
	@echo works
EOF
   if (${MAKE-make} -f maketest foo) >/dev/null 2>&1; then
      SEARCH_RULE='VPATH='
      SEARCH_SEP=' '
      AC_MSG_RESULT([VPATH=DIR1 DIR2 ...])
      break
   fi

   dnl The second most common method is like above except with the
   dnl directories separated by colons.
   cat >maketest <<EOF
VPATH=$srcdir/config:$srcdir/src:$srcdir/bin
.c.o:
	cp $< H5.o

foo: H5.o
	/bin/rm -f H5.o
	@echo works
EOF
   if (${MAKE-make} -f maketest foo) >/dev/null 2>&1; then
      SEARCH_RULE='VPATH='
      SEARCH_SEP=':'
      AC_MSG_RESULT([VPATH=DIR1:DIR2:...])
      break
   fi

   dnl pmake uses the construct `.PATH: DIR1 DIR2
   cat >maketest <<EOF
.PATH: $srcdir/config $srcdir/src $srcdir/bin
.c.o:
	cp $< H5.o

foo: H5.o
	/bin/rm -f H5.o
	@echo works
EOF
   if (MAKE= ${MAKE-make} -f maketest foo) >/dev/null 2>&1; then
      SEARCH_RULE='.PATH: '
      SEARCH_SEP=' '
      AC_MSG_RESULT([.PATH: DIR1 DIR2 ...])
      break
   fi

   dnl No way for make to search directories
   SEARCH_RULE='## SEARCH DISABLED: '
   SEARCH_SEP=' '
   AC_MSG_RESULT([it doesn't])
   if test ! -f configure; then
      AC_MSG_ERROR(${MAKE-make} requires the build and source directories to be the same)
   fi
   break
done
rm maketest

dnl ----------------------------------------------------------------------
dnl Turn on warning flags for gcc.
dnl
if test "X$GCC" = "Xyes"; then
   CFLAGS="$CFLAGS -ansi -pedantic -Wchar-subscripts -Wconversion -Wredundant-decls -Wall -W -Wshadow -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes -Wmissing-declarations -Wnested-externs -Winline"
fi

dnl ----------------------------------------------------------------------
dnl Production flags?  Save the value in $CONFIG_MODE so we have it for
dnl the record.
dnl
AC_MSG_CHECKING(for production mode)
AC_ARG_ENABLE(production,
  [  --enable-production     Determines how to run the compiler.])

case "X-$enable_production" in
   X-|X-yes)
      AC_MSG_RESULT("production")
      CONFIG_MODE=production
      CFLAGS="$CFLAGS $PROD_CFLAGS"
      CPPFLAGS="$CPPFLAGS $PROD_CPPFLAGS"
      ;;
   X-no)
      AC_MSG_RESULT("development")
      CONFIG_MODE=development
      CFLAGS="$CFLAGS $DEBUG_CFLAGS"
      CPPFLAGS="$CPPFLAGS $DEBUG_CPPFLAGS"
      ;;
   X-pg|X-profile)
      AC_MSG_RESULT("profile")
      CONFIG_MODE=profile
      CFLAGS="$CFLAGS $PROFILE_CFLAGS"
      CPPFLAGS="$CPPFLAGS $PROFILE_CPPFLAGS"
      ;;
   *)
      AC_MSG_RESULT("user-defined")
      CONFIG_MODE="$X-enableval"
      ;;
esac

dnl ----------------------------------------------------------------------
dnl Check for system libraries.
dnl
AC_CHECK_LIB(m,ceil)
AC_CHECK_LIB(nsl,xdr_int)	dnl ...for Solaris and hdf4
dnl AC_CHECK_LIB(coug,main)		dnl ...for ASCI/Red

dnl ----------------------------------------------------------------------
dnl Check for system header files.
dnl
AC_HEADER_STDC
AC_HEADER_TIME
dnl Unix
AC_CHECK_HEADERS(sys/resource.h sys/time.h unistd.h sys/ioctl.h sys/stat.h)
AC_CHECK_HEADERS(sys/socket.h sys/types.h)
AC_CHECK_HEADERS(stddef.h setjmp.h)
AC_CHECK_HEADERS(stdint.h, C9x=yes)
dnl Windows
AC_CHECK_HEADERS(io.h winsock.h sys/timeb.h)

case "$host" in
   alpha*-dec*-osf*)
      dnl The <sys/sysinfo.h> and <sys/proc.h> are needed on the DEC
      dnl Alpha to turn off UAC fixing. We do *not* attempt to
      dnl locate these files on other systems because there are too
      dnl many problems with including them.
      AC_CHECK_HEADERS(sys/sysinfo.h sys/proc.h)
      ;;
esac

dnl ----------------------------------------------------------------------
dnl Data types and their sizes.
dnl
AC_TYPE_OFF_T
AC_CHECK_TYPE(size_t, unsigned long)
AC_CHECK_TYPE(ssize_t, long)
AC_C_BIGENDIAN
AC_CHECK_SIZEOF(char, 1)
AC_CHECK_SIZEOF(short, 2)
AC_CHECK_SIZEOF(int, 4)
AC_CHECK_SIZEOF(long, 4)
AC_CHECK_SIZEOF(long long, 8)
AC_CHECK_SIZEOF(__int64, 8)
AC_CHECK_SIZEOF(float, 4)
AC_CHECK_SIZEOF(double, 8)
AC_CHECK_SIZEOF(long double, 8)

dnl Checkpoint the cache
AC_CACHE_SAVE

dnl Posix.1g types (C9x)
cat >>confdefs.h <<\EOF
#include <sys/types.h>
EOF

if test "X$C9x" = "Xyes"; then
   cat >>confdefs.h <<\EOF
#include <stdint.h>
EOF
fi

AC_CHECK_SIZEOF(        int8_t, 1)
AC_CHECK_SIZEOF(       uint8_t, 1)
AC_CHECK_SIZEOF(  int_least8_t, 1)
AC_CHECK_SIZEOF( uint_least8_t, 1)
AC_CHECK_SIZEOF(   int_fast8_t, 1)
AC_CHECK_SIZEOF(  uint_fast8_t, 1)

AC_CHECK_SIZEOF(       int16_t, 2)
AC_CHECK_SIZEOF(      uint16_t, 2)
AC_CHECK_SIZEOF( int_least16_t, 2)
AC_CHECK_SIZEOF(uint_least16_t, 2)
AC_CHECK_SIZEOF(  int_fast16_t, 2)
AC_CHECK_SIZEOF( uint_fast16_t, 2)

AC_CHECK_SIZEOF(       int32_t, 4)
AC_CHECK_SIZEOF(      uint32_t, 4)
AC_CHECK_SIZEOF( int_least32_t, 4)
AC_CHECK_SIZEOF(uint_least32_t, 4)
AC_CHECK_SIZEOF(  int_fast32_t, 4)
AC_CHECK_SIZEOF( uint_fast32_t, 4)

AC_CHECK_SIZEOF(       int64_t, 8)
AC_CHECK_SIZEOF(      uint64_t, 8)
AC_CHECK_SIZEOF( int_least64_t, 8)
AC_CHECK_SIZEOF(uint_least64_t, 8)
AC_CHECK_SIZEOF(  int_fast64_t, 8)
AC_CHECK_SIZEOF( uint_fast64_t, 8)

AC_CHECK_SIZEOF(size_t, 4)
cat >>confdefs.h <<\EOF
#include <sys/types.h> /*for off_t definition*/
EOF
AC_CHECK_SIZEOF(off_t, 4)

AC_ARG_ENABLE(hsizet,
   [  --disable-hsizet        Datasets can normally be larger than memory
                          and/or files but some compilers are unable to
                          handle this (including versions of GCC before
                          2.8.0).  Disabling the feature causes dataset
                          sizes to be restricted to the size of core memory,
                          or 'size_t'.],
  HSIZET=$enableval)

AC_MSG_CHECKING(for sizeof hsize_t and hssize_t)
AC_SUBST(HSIZET)
case $HSIZET in
   no|small)
      AC_MSG_RESULT(small)
      HSIZET=small
      ;;
   *)
      AC_MSG_RESULT(large)
      HSIZET=large
      AC_DEFINE(HAVE_LARGE_HSIZET)
      ;;
esac

dnl Checkpoint the cache
AC_CACHE_SAVE

dnl ----------------------------------------------------------------------
dnl Is HDF4 present?  If so then we can compile the hdf4 related tools.
dnl The HDF4 software has 4 component libraries (df, mfhdf, z, jpeg)
dnl and many header files.  Will just verify the presence of mfhdf.h
dnl because it includes many other HDF4 header files.
dnl Their locations might be specified with the `--with-hdf4' command-line
dnl switch.  The value is an include path and/or a library path.
dnl If the library path is specified then it must be preceded by a comma.
dnl
dnl To check, we first assume HDF4 is present and then prove otherwise
dnl when we cannot find all its components.
dnl Notice that HDF4 (when wanted) must be checked before checking for
dnl the ZLIB components because:
dnl    1. HDF4 components contain ZLIB components.
dnl    2. ZLIB components are always checked while HDF4 components are optional.
dnl If ZLIB is checked first and not found, the libz value is set to no.
dnl That will cause the later checking of HDF4 components, which also
dnl include libz, to always fail.
dnl If HDF4 components are checked first and the libz is not found, it will
dnl cause the later checking of ZLIB componenets to fail too.  But in this
dnl case, one can configure again without the optional with-hdf4 option.
dnl
AC_SUBST(H5TOH4) H5TOH4=h5toh4
AC_SUBST(TESTH5TOH4) TESTH5TOH4='$(srcdir)/testh5toh4'

AC_SUBST(H4TOH5) H4TOH5=h4toh5
AC_SUBST(TESTH4TOH5) TESTH4TOH5='$(srcdir)/testh4toh5'

AC_ARG_WITH(hdf4,[  --with-hdf4=INC,LIB     Use the HDF4 library],,withval=no)
case "$withval" in
   yes)
      AC_CHECK_HEADERS(mfhdf.h,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      AC_CHECK_LIB(z,compress,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      AC_CHECK_LIB(jpeg,jpeg_start_compress,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      AC_CHECK_LIB(df,Hstartaccess,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      AC_CHECK_LIB(mfhdf,SDstart,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      ;;
   no)
      AC_MSG_CHECKING(for HDF4)
      AC_MSG_RESULT(suppressed)
      unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5
      ;;
   *)
      hdf4_inc="`echo $withval |cut -f1 -d,`"
      if test -n "$hdf4_inc"; then
         saved_CPPFLAGS="$CPPFLAGS"
         CPPFLAGS="$CPPFLAGS -I$hdf4_inc"
         AC_CHECK_HEADERS(mfhdf.h,,
                          CPPFLAGS="$saved_CPPFLAGS"
                          unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      else
         AC_CHECK_HEADERS(mfhdf.h)
      fi
	
      hdf4_lib="`echo $withval |cut -f2 -d, -s`"
      if test -n "$hdf4_lib"; then
         saved_LDFLAGS="$LDFLAGS"
         LDFLAGS="$LDFLAGS -L$hdf4_lib"
         AC_CHECK_LIB(z,compress,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
         AC_CHECK_LIB(jpeg,jpeg_start_compress,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
         AC_CHECK_LIB(df,Hstartaccess,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
         AC_CHECK_LIB(mfhdf,SDstart,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
      else
         AC_CHECK_LIB(z,compress,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
         AC_CHECK_LIB(jpeg,jpeg_start_compress,,unset H5TOH4 TESTH5TOH4 H4TOH5 TESTH4TOH5)
         AC_CHECK_LIB(df,Hstartaccess)
         AC_CHECK_LIB(mfhdf,SDstart)
      fi
      ;;
esac

dnl ----------------------------------------------------------------------
dnl Is the GNU zlib present?  It has a header file `zlib.h' and a library
dnl `-lz' and their locations might be specified with the `--with-zlib'
dnl command-line switch.  The value is an include path and/or a library path.
dnl If the library path is specified then it must be preceded by a comma.
dnl

AC_ARG_WITH(zlib,[  --with-zlib=INC,LIB     Use the GNU zlib compression],
            ,withval=yes)
case $withval in
    yes)
	AC_CHECK_HEADERS(zlib.h)
	AC_CHECK_LIB(z, compress)
	;;
    no)
	AC_MSG_CHECKING(for GNU zlib)
	AC_MSG_RESULT(suppressed)
	;;
    *)
	zlib_inc="`echo $withval |cut -f1 -d,`"
	if test -n "$zlib_inc"; then
	    saved_CPPFLAGS="$CPPFLAGS"
	    CPPFLAGS="$CPPFLAGS -I$zlib_inc"
	    AC_CHECK_HEADERS(zlib.h,,CPPFLAGS="$saved_CPPFLAGS")
        else
	    AC_CHECK_HEADERS(zlib.h)
	fi

	zlib_lib="`echo $withval |cut -f2 -d, -s`"
	if test -n "$zlib_lib"; then
	    saved_LDFLAGS="$LDFLAGS"
	    LDFLAGS="$LDFLAGS -L$zlib_lib"
	    AC_CHECK_LIB(z, compress,,LDFLAGS="$saved_LDFLAGS")
	else
	    AC_CHECK_LIB(z, compress)
	fi
	;;
esac

dnl ----------------------------------------------------------------------
dnl Is SSL library present?  It is needed by GLOBUS-GASS and Grid Storage 
dnl driver.
dnl
AC_SUBST(SSL) SSL=yes
AC_ARG_WITH(ssl,[  --with-ssl=LIB          Use SSL libs from LIB ],,)
if test -n "$with_ssl"; then
   LDFLAGS="$LDFLAGS -L$with_ssl"
fi

AC_CHECK_LIB(crypto,main,,unset SSL)
AC_CHECK_LIB(ssl,SSL_get_version,,unset SSL)

dnl ----------------------------------------------------------------------
dnl Is GLOBUS-GASS(1.1.0 or 1.1.1) Library present?  It is also needed by 
dnl the Grid Storage driver.
dnl
AC_SUBST(GASS) GASS=yes
AC_SUBST(TESTGASS) TESTGASS='$(srcdir)/testgass'
AC_ARG_WITH(gass,[  --with-gass=INC,LIB     Use the GASS Library [default=no]],
	    ,withval=no)

case "$withval" in
   yes)
      AC_CHECK_HEADERS(globus_common.h,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_common,globus_module_activate,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gass_cache,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gaa,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gss,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gss_assist,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_io,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gass_transfer_assist,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gass_transfer,main,,unset GASS TESTGASS)
      AC_CHECK_LIB(globus_gass_file,globus_gass_open,,unset GASS TESTGASS)
      ;;
   no)
      AC_MSG_CHECKING(for GASS)
      AC_MSG_RESULT(suppressed)
      unset GASS TESTGASS
      ;;
   *)
      gass_inc="`echo $withval |cut -f1 -d,`"
      if test -n "$gass_inc"; then
         saved_CPPFLAGS="$CPPFLAGS"
         CPPFLAGS="$CPPFLAGS -I$gass_inc"
         AC_CHECK_HEADERS(globus_common.h,,
                          CPPFLAGS="$saved_CPPFLAGS"
                          unset GASS TESTGASS)
      else
         AC_CHECK_HEADERS(globus_common.h)
      fi
	
      gass_lib="`echo $withval |cut -f2 -d, -s`"
      if test -n "$gass_lib"; then
         saved_LDFLAGS="$LDFLAGS"
         LDFLAGS="$LDFLAGS -L$gass_lib"
         AC_CHECK_LIB(globus_common,globus_module_activate,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_cache,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gaa,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gss,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gss_assist,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_io,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_transfer_assist,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_transfer,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_file,globus_gass_open,,unset GASS TESTGASS)
      else
         AC_CHECK_LIB(globus_common,globus_module_activate,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_cache,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gaa,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gss,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gss_assist,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_io,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_transfer_assist,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_transfer,main,,unset GASS TESTGASS)
         AC_CHECK_LIB(globus_gass_file,globus_gass_open,,unset GASS TESTGASS)
      fi
      ;;
esac

if test -n "$GASS"; then
   AC_DEFINE(HAVE_GASS)
fi

dnl ----------------------------------------------------------------------
dnl Are SRB Client and other system libraries(socket, elf) present?  
dnl
AC_SUBST(SRB) SRB=yes
AC_SUBST(TESTSRB) TESTSRB='$(srcdir)/testsrb'
AC_ARG_WITH(srb,[  --with-srb=INC,LIB      Use the SRB Library [default=no]],
	    ,withval=no)

case "$withval" in
   yes)
      AC_CHECK_HEADERS(srbClient.h,,unset SRB TESTSRB)
      AC_CHECK_LIB(elf,main,,unset SRB TESTSRB)
      AC_CHECK_LIB(socket,main,,unset SRB TESTSRB)
      AC_CHECK_LIB(SrbClient,clConnect,,unset SRB TESTSRB)
      ;;
   no)
      AC_MSG_CHECKING(for SRB)
      AC_MSG_RESULT(suppressed)
      unset SRB TESTSRB
      ;;
   *)
      srb_inc="`echo $withval |cut -f1 -d,`"
      if test -n "$srb_inc"; then
         saved_CPPFLAGS="$CPPFLAGS"
         CPPFLAGS="$CPPFLAGS -I$srb_inc"
         AC_CHECK_HEADERS(srbClient.h,,
                          CPPFLAGS="$saved_CPPFLAGS"
                          unset SRB TESTSRB)
      else
         AC_CHECK_HEADERS(srbClient.h)
      fi

      srb_lib="`echo $withval |cut -f2 -d, -s`"
      if test -n "$srb_lib"; then
         saved_LDFLAGS="$LDFLAGS"
         LDFLAGS="$LDFLAGS -L$srb_lib"
         AC_CHECK_LIB(elf,main,,unset SRB TESTSRB)
         AC_CHECK_LIB(socket,main,,unset SRB TESTSRB)
         AC_CHECK_LIB(SrbClient,clConnect,,unset SRB TESTSRB)
      else
         AC_CHECK_LIB(elf,main,,unset SRB TESTSRB)
         AC_CHECK_LIB(socket,main,,unset SRB TESTSRB)
         AC_CHECK_LIB(SrbClient,clConnect,,unset SRB TESTSRB)
      fi
      ;;
esac
if test -n "$SRB"; then
    AC_DEFINE(HAVE_SRB)
fi

dnl ----------------------------------------------------------------------
dnl Is Grid Storage present? If so then we can compile in the Grid
dnl Storage driver.
dnl
AC_SUBST(GRIDSTORAGE) GRIDSTORAGE=yes
AC_SUBST(TESTGRIDSTORAGE) TESTGRIDSTORAGE='$(srcdir)/testgridstorage'
AC_ARG_WITH(gridstorage,
   [  --with-gridstorage=INC,LIB     Use the Globus Grid Storage driver [default=no]],
   ,withval=no)

case "$withval" in
   yes)
      AC_CHECK_HEADERS(grid_storage_file.h,,unset GRIDSTORAGE TESTGRIDSTORAGE)
      AC_CHECK_LIB(grid_storage_client,main,,unset GRIDSTORAGE TESTGRIDSTORAGE)
      AC_CHECK_LIB(grid_storage_file,grid_storage_open,,
                   unset GRIDSTORAGE TESTGRIDSTORAGE)
      ;;
   no)
      AC_MSG_CHECKING(for GRIDSTORAGE)
      AC_MSG_RESULT(suppressed)
      unset GRIDSTORAGE TESTGRIDSTORAGE
      ;;
   *)
      gridstorage_inc="`echo $withval |cut -f1 -d,`"
      if test -n "$gridstorage_inc"; then
         saved_CPPFLAGS="$CPPFLAGS"
         CPPFLAGS="$CPPFLAGS -I$gridstorage_inc"
         AC_CHECK_HEADERS(grid_storage_file.h,,
                          CPPFLAGS="$saved_CPPFLAGS"
                          unset GRIDSTORAGE TESTGRIDSTORAGE)
      else
         AC_CHECK_HEADERS(grid_storage_file.h)
      fi
	
      gridstorage_lib="`echo $withval |cut -f2 -d, -s`"
      if test -n "$gridstorage_lib"; then
         saved_LDFLAGS="$LDFLAGS"
         LDFLAGS="$LDFLAGS -L$gridstorage_lib"
         AC_CHECK_LIB(grid_storage_client,main,,
	              unset GRIDSTORAGE TESTGRIDSTORAGE)
         AC_CHECK_LIB(grid_storage_file,grid_storage_open,,
	              unset GRIDSTORAGE TESTGRIDSTORAGE)
      else
         AC_CHECK_LIB(grid_storage_client,main,,
	              unset GRIDSTORAGE TESTGRIDSTORAGE)
         AC_CHECK_LIB(grid_storage_file,grid_storage_open,,
	              unset GRIDSTORAGE TESTGRIDSTORAGE)
      fi
      ;;
esac

if test -n "$GRIDSTORAGE"; then
   AC_DEFINE(HAVE_GRIDSTORAGE)
fi

dnl ----------------------------------------------------------------------
dnl Is LLNL's PDB present? If so then we'll compile the PDB-to-HDF5
dnl translator.
dnl
AC_SUBST(PDB2HDF)
AC_CHECK_LIB(pdb,PD_open)
AC_CHECK_LIB(silo,lite_PD_open)
AC_CHECK_HEADERS(pdb.h,PDB2HDF=pdb2hdf)

dnl Checkpoint the cache
AC_CACHE_SAVE

dnl ----------------------------------------------------------------------
dnl Is the Pthreads library present?  It has a header file `pthread.h' and
dnl a library `-lpthread' and their locations might be specified with the
dnl `--with-pthread' command-line switch.  The value is an include path
dnl and/or a library path.  If the library path is specified then it must
dnl be preceded by a comma.
dnl
AC_SUBST(PTHREAD) PTHREAD=yes

AC_ARG_WITH(pthread,
	[  --with-pthread=INC,LIB  Use the Pthreads library],
	,withval=no)

case "$withval" in
   yes)
      AC_CHECK_HEADERS(pthread.h)
      if test `uname` != "FreeBSD"; then
         AC_CHECK_LIB(pthread, pthread_create,,unset PTHREAD)
      else
         CFLAGS="$CFLAGS -D_THREAD_SAFE"
         LDFLAGS="$LDFLAGS -pthread"
      fi
      ;;
   no)
      AC_MSG_CHECKING(for pthread)
      AC_MSG_RESULT(suppressed)
      unset PTHREAD
      ;;
   *)
      pthread_inc="`echo $withval |cut -f1 -d,`"
      if test -n "$pthread_inc"; then
         saved_CPPFLAGS="$CPPFLAGS"
         CPPFLAGS="$CPPFLAGS -I$pthread_inc"
         AC_CHECK_HEADERS(pthread.h,,CPPFLAGS="$saved_CPPFLAGS"; unset PTHREAD)
      else
         AC_CHECK_HEADERS(pthread.h,,unset PTHREAD)
      fi

      pthread_lib="`echo $withval |cut -f2 -d, -s`"
      if test -n "$pthread_lib"; then
         saved_LDFLAGS="$LDFLAGS"
         LDFLAGS="$LDFLAGS -L$pthread_lib"
         AC_CHECK_LIB(pthread, pthread_create,,
	              LDFLAGS="$saved_LDFLAGS"; unset PTHREAD)
      else
         AC_CHECK_LIB(pthread, pthread_create,,unset PTHREAD)
      fi
      ;;
esac

dnl ----------------------------------------------------------------------
dnl Enable thread-safe version of library.  It requires pthread on.
dnl
AC_MSG_CHECKING(for thread safe support)
AC_ARG_ENABLE(threadsafe,
   [  --enable-threadsafe     Enable thread safe capability],
   THREADSAFE=$enableval)

case "X-$THREADSAFE" in
   X-|X-no)
      AC_MSG_RESULT(no)
      ;;
   X-yes)
      if test -n "$PTHREAD"; then
         AC_MSG_RESULT(yes)
         THREADSAFE=yes
      else
         AC_MSG_RESULT(error)
         AC_MSG_ERROR(needed pthread library not available)
      fi
      ;;
   *)
      AC_MSG_RESULT(error)
      AC_MSG_ERROR(\'$enableval\' is not a valid threadsafe type)
      ;;
esac

if test "X$THREADSAFE" = "Xyes"; then
    AC_DEFINE(HAVE_THREADSAFE)
fi

dnl ----------------------------------------------------------------------
dnl Check if they would like the HDF5 v1.2 compatibility functions
dnl compiled in
dnl
AC_MSG_CHECKING(whether HDF5 v1.2 compatibility functions enabled)
AC_ARG_ENABLE(hdf5v1_2,
   [  --enable-hdf5v1_2       Compile the HDF5 v1.2 compatibility interface [default=no]],
   HDF5_V1_2_COMPAT=$enableval)

if test "X$HDF5_V1_2_COMPAT" = "Xyes"; then
   AC_MSG_RESULT(yes)
   AC_DEFINE(WANT_H5_V1_2_COMPAT)
else
   AC_MSG_RESULT(no)
fi

dnl ----------------------------------------------------------------------
dnl Should the Stream Virtual File Driver be compiled in ?
dnl
AC_MSG_CHECKING(for Stream Virtual File Driver support)
AC_ARG_ENABLE(stream-vfd,
   [  --enable-stream-vfd     Build the Stream Virtual File Driver. [default=no]],
   STREAM_VFD=$enableval)

if test "X$STREAM_VFD" = "Xyes"; then
   AC_MSG_RESULT(yes)
   AC_CHECK_HEADERS(netinet/tcp.h sys/filio.h)
   AC_DEFINE(HAVE_STREAM)

   dnl Check if 'socklen_t' available
   AC_MSG_CHECKING([if socklen_t is defined])
   AC_TRY_COMPILE([
#include <stdio.h>
#include <stdlib.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
      ],
      [socklen_t foo; return 0;],
      AC_DEFINE(HAVE_SOCKLEN_T) AC_MSG_RESULT(yes),
      AC_MSG_RESULT(no)
   )
else
   AC_MSG_RESULT(not configured)
fi

dnl ----------------------------------------------------------------------
dnl How does one figure out the local time zone?  Anyone know of a
dnl Posix way to do this?
dnl

dnl First check if `struct tm' has a `tm_gmtoff' member.
AC_MSG_CHECKING(for tm_gmtoff in struct tm)
AC_TRY_COMPILE([
#include <sys/time.h>
#include <time.h>],[struct tm tm; tm.tm_gmtoff=0;],
AC_DEFINE(HAVE_TM_GMTOFF)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

dnl check if `struct tm' has a `__tm_gmtoff' member.
AC_MSG_CHECKING(for __tm_gmtoff in struct tm)
AC_TRY_COMPILE([
#include <sys/time.h>
#include <time.h>],[struct tm tm; tm.__tm_gmtoff=0;],
AC_DEFINE(HAVE___TM_GMTOFF)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

dnl Check whether the global variable `timezone' is defined.
AC_MSG_CHECKING(for global timezone variable)
AC_TRY_LINK([
#include <sys/time.h>
#include <time.h>], [timezone=0;],
AC_DEFINE(HAVE_TIMEZONE)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

dnl Check whether `struct timezone' is defined.
AC_STRUCT_TIMEZONE
AC_MSG_CHECKING(for struct timezone)
AC_TRY_COMPILE([
#include <sys/types.h>
#include <sys/time.h>
#include <time.h>],[struct timezone tz; tz.tz_minuteswest=0;],
AC_DEFINE(HAVE_STRUCT_TIMEZONE)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

dnl ----------------------------------------------------------------------
dnl Does the struct stat have the st_blocks field?  This field is not Posix.
dnl
AC_MSG_CHECKING(for st_blocks in struct stat)
AC_TRY_COMPILE([
#include <sys/stat.h>],[struct stat sb; sb.st_blocks=0;],
AC_DEFINE(HAVE_STAT_ST_BLOCKS)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

dnl ----------------------------------------------------------------------
dnl How do we figure out the width of a tty in characters?
dnl
AC_CHECK_FUNCS(_getvideoconfig gettextinfo GetConsoleScreenBufferInfo)
AC_CHECK_FUNCS(_scrsize ioctl)

AC_MSG_CHECKING(for struct videoconfig)
AC_TRY_COMPILE(,[struct videoconfig w; w.numtextcols=0;],
AC_DEFINE(HAVE_STRUCT_VIDEOCONFIG)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

AC_MSG_CHECKING(for struct text_info)
AC_TRY_COMPILE(,[struct text_info w; w.screenwidth=0;],
AC_DEFINE(HAVE_STRUCT_TEXT_INFO)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

AC_MSG_CHECKING(for TIOCGWINSZ)
AC_TRY_COMPILE([#include <sys/ioctl.h>],[int w=TIOCGWINSZ;],
AC_DEFINE(HAVE_TIOCGWINSZ)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))

AC_MSG_CHECKING(for TIOCGGETD)
AC_TRY_COMPILE([#include <sys/ioctl.h>],[int w=TIOCGETD;],
AC_DEFINE(HAVE_TIOCGETD)
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no))


dnl ----------------------------------------------------------------------
dnl Check for functions.
dnl
AC_CHECK_FUNCS(getpwuid gethostname system getrusage fork waitpid)
AC_CHECK_FUNCS(gettimeofday BSDgettimeofday difftime snprintf vsnprintf)
AC_CHECK_FUNCS(compress2 setsysinfo longjmp signal sigaction)
AC_TRY_COMPILE([#include<sys/types.h>],
	       [off64_t n = 0;],
	       AC_CHECK_FUNCS(lseek64 fseek64),
	       AC_MSG_RESULT([skipping test for lseek64() and fseek64()]))


dnl ----------------------------------------------------------------------
dnl Check compiler characteristics
dnl
AC_C_CONST
AC_C_INLINE

AC_MSG_CHECKING(for __attribute__ extension)
AC_TRY_COMPILE(,[int __attribute__((unused)) x],
	       AC_DEFINE(HAVE_ATTRIBUTE)
	       AC_MSG_RESULT(yes),
	       AC_MSG_RESULT(no))

AC_MSG_CHECKING(for __FUNCTION__ extension)
AC_TRY_COMPILE(,[(void)__FUNCTION__],
	       AC_DEFINE(HAVE_FUNCTION)
	       AC_MSG_RESULT(yes),
	       AC_MSG_RESULT(no))

dnl ----------------------------------------------------------------------
dnl Try to figure out how to print `long long'.  Some machines use `%lld'
dnl and others use `%qd'.  There may be more!  The final `l' is a
dnl default in case none of the others work.
dnl Need to patch up LD_LIBRARY_PATH so that the execution can find all
dnl the dynamic library.  The correct way to do it should be updating
dnl LD_LIBRARY_PATH along with LDFLAGS or do it with the AC_TRY_RUN macro.
dnl
AC_MSG_CHECKING(how to print long long)
AC_CACHE_VAL(hdf5_cv_printf_ll,
LD_LIBRARY_PATH="$LD_LIBRARY_PATH`echo $LDFLAGS | sed -e 's/-L/:/g' -e 's/ //g'`"
export LD_LIBRARY_PATH

for hdf5_cv_printf_ll in l L q ll unknown; do
   AC_TRY_RUN([
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(void)
{
	char *s=malloc(128);
	long long x = (long long)1048576 * (long long)1048576;
	sprintf(s,"%${hdf5_cv_printf_ll}d",x);
	exit(strcmp(s,"1099511627776"));
}
   ], break)
done)

AC_MSG_RESULT(%${hdf5_cv_printf_ll}d and %${hdf5_cv_printf_ll}u)
AC_DEFINE_UNQUOTED(PRINTF_LL_WIDTH,"$hdf5_cv_printf_ll")

dnl ----------------------------------------------------------------------
dnl Turn on debugging by setting compiler flags
dnl
AC_MSG_CHECKING(for debug flags)
AC_ARG_ENABLE(debug,
   [  --enable-debug[=all]    Turn on debugging in all packages. One may also
                          specify a comma-separated list of package names
                          without the leading H5 or the word no. The default
                          is most packages.],
   DEBUG_PKG=$enableval)

AC_SUBST(DEBUG_PKG)
all_packages="ac,b,d,e,f,g,hg,hl,i,mf,mm,o,p,s,t,v,z"
case "X-$DEBUG_PKG" in
   X-yes)
      DEBUG_PKG="d,e,f,g,hg,i,mm,o,p,s,t,v,z"
      CPPFLAGS="$CPPFLAGS -UNDEBUG"
      AC_MSG_RESULT(default ($DEBUG_PKG))
      ;;
   X-all)
      DEBUG_PKG=$all_packages
      CPPFLAGS="$CPPFLAGS -UNDEBUG"
      AC_MSG_RESULT(all ($DEBUG_PKG))
      ;;
   X-|X-no|X-none)
      AC_MSG_RESULT(none)
      DEBUG_PKG=
      CPPFLAGS="$CPPFLAGS -DNDEBUG"
      ;;
   *)
      AC_MSG_RESULT($DEBUG_PKG)
      ;;
esac

if test -n "$DEBUG_PKG"; then
   for pkg in `echo $DEBUG_PKG | tr 'a-z,' 'A-Z '`; do
      CPPFLAGS="$CPPFLAGS -DH5${pkg}_DEBUG"
   done
fi

dnl ----------------------------------------------------------------------
dnl Enable tracing of the API
dnl
AC_MSG_CHECKING(for API tracing);
AC_ARG_ENABLE(trace,
  [  --disable-trace         Disable API tracing capability],
  TRACE=$enableval)

AC_SUBST(TRACE_API)
if test -z "$TRACE" -o "X$TRACE" = "Xyes"; then
   AC_MSG_RESULT(yes)
   TRACE_API=yes
   CPPFLAGS="$CPPFLAGS -DH5_DEBUG_API"
else
   AC_MSG_RESULT(no)
   TRACE_API=no
   CPPFLAGS="$CPPFLAGS -UH5_DEBUG_API"
fi

dnl Checkpoint the cache
AC_CACHE_SAVE

dnl ----------------------------------------------------------------------
dnl The following variables are used to distinguish between building a
dnl serial and parallel library.
dnl
dnl    HAVE_PARALLEL	-- defined in H5config.h if we are building
dnl			   a parallel library even if configure wasn't
dnl			   able to find some header file or library that
dnl			   might be required. This is defined if the
dnl			   compiler looks like a parallel compiler (e.g.,
dnl			   mpicc or mpcc) or if the user explicitly states
dnl			   that a parallel library is being built by supplying
dnl			   the `--enable-parallel' configure switch.
dnl
dnl    PARALLEL		-- This variable is set to a non-null value if
dnl			   configure thinks we're compiling a parallel
dnl			   version of the library.
dnl
dnl    RUNSERIAL	-- This is a command which will be prepended to
dnl			   the executable name to run the executable using
dnl			   a single process. For serial versions of the
dnl			   library this will normally be empty. For parallel
dnl			   versions it might be something like `mpirun -np 1'.
dnl			   The value of this variable is substituted in *.in
dnl			   files.
dnl
dnl    RUNPARALLEL	-- This is a command which will be prepended to
dnl			   the executable name to run the executable on
dnl			   multiple processors. For the serial library the
dnl			   value will normally be the empty string. For
dnl			   parallel library it should be something like
dnl			   `mpi -np $$NPROCS' where NPROCS will eventually
dnl			   contain the number of processors on which to run
dnl			   the executable (the double dollarsigns are to
dnl			   protect the expansion until make executes the
dnl			   command).  The value of this variable is
dnl			   substituted in *.in files.
dnl
AC_SUBST(PARALLEL)
AC_SUBST(RUNSERIAL)
AC_SUBST(RUNPARALLEL)
AC_SUBST(TESTPARALLEL)

dnl ----------------------------------------------------------------------
dnl If the compiler is obviously a parallel compiler then we're building
dnl a parallel version of hdf5 and should define HAVE_PARALLEL. Furthermore,
dnl the name of the compiler might tell us how to run the resulting
dnl executable. For `mpicc' the executable should be run with `mpirun' from
dnl the same directory as mpicc if it exists.
dnl
case "$CC_BASENAME" in
   mpicc)
      dnl The mpich compiler. Use mpirun from the same directory if it
      dnl exists.
      PARALLEL=mpicc
      AC_MSG_CHECKING(for mpirun)

      dnl Find the path where mpicc is located.
      cmd=`echo $CC |cut -f1 -d' '`
      if (echo $cmd |grep / >/dev/null); then
	 path="`echo $cmd |sed 's/\(.*\)\/.*$/\1/'`"
      else
         for path in `echo $PATH |tr : ' '`; do
            if test -x $path/$cmd; then
               break
            fi
         done
      fi

      dnl Is there an mpirun at that path?
      if test -x $path/mpirun; then
         AC_MSG_RESULT($path/mpirun)
         RUNSERIAL="${RUNSERIAL:-none}"
         if test -z "$RUNPARALLEL"; then
            RUNPARALLEL="$path/mpirun -np \$\${NPROCS:=2}"
         fi
      else
         AC_MSG_RESULT(none)
      fi
      ;;

   hcc)
      dnl The LAM compiler. Use mpirun_lam or mpirun from the same directory
      dnl if it exists.
      PARALLEL=hcc
      AC_MSG_CHECKING(for mpirun_lam or mpirun)

      dnl Find the path where hcc is located
      cmd=`echo $CC |cut -f1 -d' '`
      if (echo $cmd |grep / >/dev/null); then
         path="`echo $cmd |sed 's/\(.*\)\/.*$/\1/'`"
      else
         for path in `echo $PATH |tr : ' '`; do
	    if test -x $path/$cmd; then
	       break
	    fi
	 done
      fi

      dnl Is there an mpirun_lam or mpirun at that path?
      if test -x $path/mpirun_lam -o -x $path/mpirun; then
	 if test -x $path/mpirun_lam; then
	    cmd=mpirun_lam
         else
	    cmd=mpirun
	 fi
	 AC_MSG_RESULT($path/$cmd);
         RUNSERIAL="${RUNSERIAL:-none}"
         if test -z "$RUNPARALLEL"; then
            RUNPARALLEL="$path/$cmd -np \$\${NPROCS:=2}"
         fi
      else
	 AC_MSG_RESULT(none)
      fi
      ;;

   mpcc|mpcc_r)
      dnl The IBM compiler
      PARALLEL="$CC_BASENAME"
      ;;

   *)
      dnl Probably not a parallel compiler, but if `--enable-parallel'
      dnl is defined below then we're still building a parallel hdf5.
      ;;
esac

dnl ----------------------------------------------------------------------
dnl What header files and libraries do we have to look for for parallel
dnl support?  For the most part, search paths are already specified with
dnl CPPFLAGS and LDFLAGS or are known to the compiler.  If the user says
dnl `--disable-parallel' but specifies a known parallel compiler (like mpicc
dnl or mpcc) then parallel support is enabled but configure doesn't search
dnl for any parallel header files or libraries.
dnl
AC_ARG_ENABLE(parallel,
   [  --enable-parallel=TYPE  Search for MPI-IO and MPI support files])

AC_MSG_CHECKING(for parallel support files)
case "X-$enable_parallel" in
   X-|X-no|X-none)
      dnl Either we are not compiling for parallel or the header and
      dnl library files and locations are known to the compiler (this is
      dnl the case for a correct installation of mpicc for instance).
      AC_MSG_RESULT(skipped)
      ;;

   X-yes)
      dnl We want to compile a parallel library with a compiler that
      dnl may already know how to link with MPI and MPI-IO.
      AC_MSG_RESULT(provided by compiler)
      PARALLEL=yes

      dnl Try link a simple MPI program.  If fail, try again with -lmpi.
      AC_TRY_LINK(,MPI_Init(),,AC_CHECK_LIB(mpi,MPI_Init,,PARALLEL=no))

      dnl Then try link a simple MPI-IO program. If fail, try again with
      dnl -lmpio.
      if test "X$PARALLEL" = "Xyes"; then
         AC_TRY_LINK(,MPI_File_open(),,
                     AC_CHECK_LIB(mpio,MPI_File_open,,PARALLEL=no))
      fi

      dnl Set RUNPARALLEL to mpirun if not set yet.
      if test "X$PARALLEL" = "Xyes" -a -z "$RUNPARALLEL"; then
         RUNPARALLEL="mpirun -np \$\${NPROCS:=2}"
      fi
      ;;

   X-mpich)
      dnl For normal mpich installation the compiler, mpicc, should know
      dnl where the MPI and MPI-IO header files are located and know which
      dnl extra libraries need to be linked and will supply appropriate
      dnl flags to the underlying compiler.
      AC_MSG_RESULT(mpich)
      AC_MSG_WARN(*** Why aren't you using an mpicc compiler? ***)

      dnl Apparently mpicc isn't installed correctly so configure must search
      dnl for the header files and libraries. Actually we only have to search
      dnl for the libraries in order to get the onto the link line, the user
      dnl will have already told us about the locations. Fail if something
      dnl is missing.
      PARALLEL=mpich
      AC_CHECK_LIB(mpich,MPI_Init,,AC_MSG_ERROR(no mpich library))
      ;;

    *)
      AC_MSG_RESULT(error)
      AC_MSG_ERROR(\'$enable_parallel\' is not a valid parallel search type)
      ;;
esac

dnl ----------------------------------------------------------------------
dnl Should the `testpar' directory participate in the build?
dnl
if test -n "$PARALLEL"; then
   TESTPARALLEL=testpar
fi

dnl ----------------------------------------------------------------------
dnl Print some other parallel information and do some sanity checks.
dnl
if test -n "$PARALLEL"; then
   dnl We are building a parallel library
   AC_DEFINE(HAVE_PARALLEL)

   dnl Display what we found about running programs
   AC_MSG_CHECKING(prefix for running on one processor)
   AC_MSG_RESULT($RUNSERIAL)
   AC_MSG_CHECKING(prefix for running in parallel)
   AC_MSG_RESULT($RUNPARALLEL)

   dnl Check that we can link a simple MPI and MPI-IO application
   AC_MSG_CHECKING(whether a simple MPI-IO program can be linked)
   AC_TRY_LINK(,[MPI_Init();MPI_File_open();],
               AC_MSG_RESULT(yes),
               AC_MSG_RESULT(no)
               AC_MSG_ERROR('unable to link a simple MPI-IO application'))

   dnl There *must* be some way to run in parallel even if it's just the
   dnl word `none'.
   if test -z "$RUNPARALLEL"; then
      AC_MSG_ERROR(no way to run a parallel program)
   fi

   dnl If RUNSERIAL or RUNPARALLEL is the word `none' then replace it with
   dnl the empty string.
   if test "X$RUNSERIAL" = "Xnone"; then
      RUNSERIAL=
   fi
   if test "X$RUNPARALLEL" = "Xnone"; then
      RUNPARALLEL=
   fi
fi

dnl ----------------------------------------------------------------------
dnl Set some variables for general configuration information to be saved
dnl and installed with the libraries.
dnl

dnl HDF5 version from the first line of the README file.
H5_VERSION=`cut -d' ' -f3 $srcdir/README |head -1`
AC_SUBST(H5_VERSION)

dnl Configuration date
AC_SUBST(CONFIG_DATE) CONFIG_DATE=`date`

dnl User doing the configuration
AC_SUBST(CONFIG_USER) CONFIG_USER="`whoami`@`hostname`"
if test -n "$ORGANIZATION"; then
   CONFIG_USER="$CONFIG_USER at $ORGANIZATION"
fi

dnl Configuration mode (production, development, profile, etc) saved above.
AC_SUBST(CONFIG_MODE)

dnl Byte sex from the AC_C_BIGENDIAN macro.
AC_SUBST(BYTESEX)
if test "X$ac_cv_c_bigendian" = "Xyes"; then
   BYTESEX="big-endian"
else
   BYTESEX="little-endian"
fi

dnl Are we compiling static libraries, shared libraries, or both?  This
dnl is only used for the libhdf5.settings file. We can't just look at
dnl $enable_static and $enable_shared because if they're yes the ltconfig
dnl might have decided that one or the other is simply not possible.
dnl Therefore we have to look in the generated `libtool' shell script for
dnl lines that set the value of `build_libtool_libs' (shared) and
dnl `build_old_libs' (static).
AC_SUBST(STATIC_SHARED)
if (grep '^build_libtool_libs=yes' libtool >/dev/null); then
    enable_shared=yes
else
    enable_shared=no
fi
if (grep '^build_old_libs=yes' libtool >/dev/null); then
    enable_static=yes
else
    enable_static=no
fi
if test "X$enable_static" = "Xyes" && test "X$enable_shared" = "Xyes"; then
    STATIC_SHARED="static, shared"
elif test "X$enable_static" = "Xyes"; then
    STATIC_SHARED="static"
elif test "X$enable_shared" = "Xyes"; then
    STATIC_SHARED="shared"
else
    STATIC_SHARED="none"
fi

dnl Parallel support? (set above except empty if none)
PARALLEL=${PARALLEL:-no}

dnl Compiler with version information. This consists of the full path
dnl name of the compiler and the reported version number.
AC_SUBST(CC_VERSION)
if `echo $CC | grep / 2>&1 /dev/null`; then
   CC_VERSION="$CC"	
else
   CC_VERSION="$CC";
   for x in `echo $PATH | sed -e 's/:/ /g'`; do
      if test -x $x/$CC; then
	 CC_VERSION="$x/$CC"
	 break
      fi
   done
fi
if test -n "$cc_vendor" && test -n "$cc_version"; then
   CC_VERSION="$CC_VERSION ($cc_vendor-$cc_version)"
fi

dnl ----------------------------------------------------------------------
dnl Where is the root of the source tree.  Give an absolute address so
dnl we can find it no matter which directory of the distribution is our
dnl current directory.  The built-in pwd fails on some systems, but the
dnl /bin/pwd version works OK.
dnl
if test -x /bin/pwd; then
   pwd=/bin/pwd
else
   pwd=pwd
fi
AC_SUBST(ROOT) ROOT=`$pwd`

dnl ----------------------------------------------------------------------
dnl Determine the runtime libraries we may need to include in the
dnl libtools command so that executables will find the correct dynamic
dnl libraries.
dnl 
DYNAMIC_DIRS=""
if test -n "$LDFLAGS"; then
   for d in $LDFLAGS ; do
      case "$d" in
         -L*)
            d=`echo $d | sed -e 's/-L//g'`
            case "$d" in
               .*)
		  dnl If the path isn't absolute, make it so by
		  dnl prepending the ROOT directory to it.
	          d=${ROOT}/$d
	          ;;
	    esac
            DYNAMIC_DIRS="-R${d} $DYNAMIC_DIRS"
	    ;;
      esac
   done
fi
AC_SUBST(DYNAMIC_DIRS)

if test -n "$CPPFLAGS"; then
   TEMP_CPPFLAGS=""
   for d in $CPPFLAGS ; do
      case "$d" in
        -I.*)
           dnl If the path isn't absolute, make it so by prepending
           dnl the ROOT directory to it.
	   d=`echo $d | sed -e 's/-I//g'`
	   d=-I${ROOT}/${d}
	   ;;
      esac
      TEMP_CPPFLAGS="$d $TEMP_CPPFLAGS"
   done
   CPPFLAGS=$TEMP_CPPFLAGS
fi

dnl ----------------------------------------------------------------------
dnl Build the Makefiles.  Almost every Makefile.in will begin with the line
dnl `@COMMENCE@' and end with the line `@CONCLUDE@'.  These lines insert
dnl various files from the config directory into the Makefile.
dnl
AC_SUBST_FILE(COMMENCE) COMMENCE=config/commence
AC_SUBST_FILE(CONCLUDE) CONCLUDE=config/conclude

dnl The directory search list
AC_SUBST(SEARCH) SEARCH='$(srcdir) $(top_builddir)/src $(top_srcdir)/src'
cmd='echo $SEARCH |sed "s/ /'$SEARCH_SEP'/g"'
SEARCH="$SEARCH_RULE`eval $cmd`"
export SEARCH

dnl We don't need to say when we're entering directories if we're using
dnl GNU make becuase make does it for us.
if test "X$GMAKE" = "Xyes"; then
   AC_SUBST(SETX) SETX=":"
else
   AC_SUBST(SETX) SETX="set -x"
fi

dnl Some cleanup stuff
rm -f conftest conftest.o conftest.c dummy.o

dnl Build config.status, touch the stamp files, and build all the Makefiles.
dnl The order is such that the first `make' does not need to update any
dnl configuration information. See config/commence.in for the order in which
dnl things need to be done.

# First the stamp1 file for H5config.h.in
mkdir ./config >/dev/null 2>&1
touch ./config/stamp1

# Then the config.status file (but not makefiles)
saved_no_create=$no_create
no_create=yes
AC_OUTPUT(src/libhdf5.settings config/depend1 config/depend2 config/depend3
	  config/depend4 config/dependN config/commence config/conclude
          Makefile src/Makefile pablo/Makefile test/Makefile
          testpar/Makefile tools/Makefile examples/Makefile
	  doc/Makefile doc/html/Makefile doc/html/Tutor/Makefile)
no_create=$saved_no_create

# Then the stamp2 file for H5config.h
touch ./config/stamp2

# Finally the makefiles
test "$no_create" = yes || ${CONFIG_SHELL-/bin/sh} $CONFIG_STATUS || exit 1

dnl We don't want inline defined for C++ compilers
cat >> src/H5config.h <<EOF

/* inline is a keyword in C++. If this is a C++ compiler, undefine it */
#if defined(__cplusplus) && defined(inline)
#undef inline
#endif
EOF

dnl Put the C++ ifdef wrappers in the H5pubconf file as well, but only
dnl if it's not there already.
if (grep __cplusplus src H5pubconf.h) >/dev/null 2>&1; then
   :
else
   cat >> src/H5pubconf.h <<EOF

/* inline is a keyword in C++. If this is a C++ compiler, undefine it */
#if defined(__cplusplus) && defined(inline)
#undef inline
#endif
EOF
fi