AC_PREREQ(2.59)AC_INIT(configure.in)dnldnl Set the directory that contains support scripts such as install-sh anddnl config.guessdnlAC_CONFIG_AUX_DIR(../../../../../confdb)dnl The MPICH2 top-level configure adds a bunch of flags to thednl user-defined CFLAGS by processing different configure command-linednl arguments (--enable-g, --enable-default-optimization). These updateddnl flags are passed down as a separate flag. Here, we don't care aboutdnl the user-defined flags, but rather this updated flags, so we justdnl overwrite CFLAGS with them.PAC_SUBCONFIG_INIT()dnldnl Definitions will be placed in this file rather than in the DEFS variablednlAC_CONFIG_HEADER(include/mpidi_ch3i_sctp_conf.h)echo "RUNNING CONFIGURE FOR THE SCTP CHANNEL"dnldnl First check that we have a clean build if we are doing a VPATH buildif test "`cd $srcdir && pwd`" != "`pwd`" && test -f $srcdir/config.status ; then    AC_MSG_ERROR([You cannot do a VPATH build if the source directory has been    configured.  Run "make distclean" in $srcdir first.])fiPAC_PROG_MAKEdnl AC_CHECK_HEADER(net/if.h) fails on Solaris; extra header files neededAC_TRY_COMPILE([#include <sys/types.h>#include <sys/socket.h>#include <net/if.h>],,lac_cv_header_net_if_h=yes,lac_cv_header_net_if_h=no)echo "checking for net/if.h... $lac_cv_header_net_if_h"if test "$lac_cv_header_net_if_h" = "yes" ; then    AC_DEFINE(HAVE_NET_IF_H, 1, [Define if you have the <net/if.h> header file.])fiAC_CHECK_HEADERS(				\	netdb.h					\	sys/ioctl.h				\	sys/socket.h				\	sys/sockio.h				\	sys/types.h				\	errno.h)# netinet/in.h often requires sys/types.h first.  With AC 2.57, check_headers# does the right thing, which is to test whether the header is found # by the compiler, but this can cause problems when the header needs # other headers.  2.57 changes the syntax (!) of check_headers to allow # additional headers.AC_CACHE_CHECK([for netinet/in.h],ac_cv_header_netinet_in_h,[AC_TRY_COMPILE([#ifdef HAVE_SYS_TYPES_H#include <sys/types.h>#endif#include <netinet/in.h>],[int a=0;],    ac_cv_header_netinet_in_h=yes,    ac_cv_header_netinet_in_h=no)])if test "$ac_cv_header_netinet_in_h" = yes ; then    AC_DEFINE(HAVE_NETINET_IN_H,1,[Define if netinet/in.h exists])fiAC_ARG_WITH(sctp, [--with-sctp=path - specify path where sctp include directory and lib directory can be found],if test "${with_sctp}" != "yes" -a "${with_sctp}" != "no" ; then    LDFLAGS="$LDFLAGS -L${with_sctp}/lib"    CPPFLAGS="$CPPFLAGS -I${with_sctp}/include"fi,)AC_ARG_WITH(sctp-include, [--with-sctp-include=path - specify path to sctp include directory],if test "${with_sctp_include}" != "yes" -a "${with_sctp_include}" != "no" ; then    CPPFLAGS="$CPPFLAGS -I${with_sctp_include}"fi,)AC_ARG_WITH(sctp-lib, [--with-sctp-lib=path - specify path to sctp lib directory],if test "${with_sctp_lib}" != "yes" -a "${with_sctp_lib}" != "no" ; then    LDFLAGS="$LDFLAGS -L${with_sctp_lib}"fi,)AC_CHECK_HEADER([netinet/sctp.h], , [    AC_MSG_ERROR(['sctp.h not found.  Did you specify --with-sctp= or --with-sctp-include=?'])    ])AC_CHECK_LIB(sctp, sctp_recvmsg, , [    AC_MSG_ERROR(['sctp library not found.  Did you specify --with-sctp= or --with-sctp-lib=?'])    ])AC_SUBST(device_name)AC_SUBST(channel_name)AC_SUBST(AR)AC_SUBST(RANLIB)AC_SUBST(MPILIBNAME)AC_SUBST(CC)AC_SUBST(CFLAGS)AC_SUBST(CPPFLAGS)PAC_CC_SUBDIR_SHLIBSAC_SUBST(master_top_srcdir)# Master_top_builddir is imported from the top; use it for the "top"# (used for things like libtool)if test -z "$master_top_builddir" ; then    if test -s ../../../../../.mpich2 ; then        master_top_builddir=../../../../..    fifiAC_SUBST(master_top_builddir)dnldnl Dependency handlingAC_SUBST(MAKE_DEPEND_C)dnldnl EtagsAC_SUBST(ETAGS)AC_SUBST(ETAGSADD)export ETAGSexport ETAGSADDCPPFLAGS="$CPPFLAGS $MPICH2_INCLUDE_FLAGS"dnl Place holder macro for finalizationPAC_SUBCONFIG_FINALIZE()AC_OUTPUT(Makefile src/Makefile localdefs)