configure.in

好东东。linux下面的文件节点、文件状态的变化监听代码

dnl FAM_DECL_IN_MNTENT(mntent def to check, [action-if-true [,action-if-false]])
AC_DEFUN(FAM_DECL_IN_MNTENT, [
    AC_MSG_CHECKING([mntent.h for $1])
    AC_TRY_COMPILE([#include <mntent.h>], [const char *foo = $1;], fam_have_decl_in_mntent=yes, fam_have_decl_in_mntent=no)
    AC_MSG_RESULT($fam_have_decl_in_mntent)
    if test "$fam_have_decl_in_mntent" = "yes"; then
	ifelse([$2], , :, [$2])
    else	
	ifelse([$3], , :, [$3])
    fi
])

dnl
dnl  Test for MNTTYPE_NFS, MNTTYPE_NFS2, MNTTYPE_NFS3, and MNTTYPE_CACHEFS.
dnl If we don't have MNTTYPE_NFS , we croak.
dnl

FAM_DECL_IN_MNTENT(MNTTYPE_NFS, ,AC_MSG_ERROR(Didn't find MNTTYPE_NFS in mntent.h))
FAM_DECL_IN_MNTENT(MNTTYPE_NFS2, AC_DEFINE(HAVE_MNTTYPE_NFS2))
FAM_DECL_IN_MNTENT(MNTTYPE_NFS3, AC_DEFINE(HAVE_MNTTYPE_NFS3))
FAM_DECL_IN_MNTENT(MNTTYPE_CACHEFS, AC_DEFINE(HAVE_MNTTYPE_CACHEFS))

dnl
dnl  Test for bindresvport() prototype.
dnl
AC_CACHE_CHECK([netinet/in.h for bindresvport()], fam_cv_bindresvport_in_in_h, AC_TRY_COMPILE([#include <netinet/in.h>], [int p = 0; struct sockaddr_in s; bindresvport(p, &s); ], fam_cv_bindresvport_in_in_h=yes, fam_cv_bindresvport_in_in_h=no))
if test "$fam_cv_bindresvport_in_in_h" = "yes"; then
    AC_DEFINE(HAVE_BINDRESVPORT_PROTO, 1)
else
    AC_DEFINE(HAVE_BINDRESVPORT_PROTO, 0)
fi

dnl
dnl  Test for prmap_sgi_t
dnl
AC_CACHE_CHECK([for prmap_sgi_t], fam_cv_have_prmap_sgi_t, AC_TRY_COMPILE([#include <sys/procfs.h>], [prmap_sgi_t f; f.pr_lockcnt = 0; ], fam_cv_have_prmap_sgi_t=yes, fam_cv_have_prmap_sgi_t=no))
if test "$fam_cv_have_prmap_sgi_t" = "yes"; then
    AC_DEFINE(HAVE_PRMAP_SGI_T, 1)
else
    AC_DEFINE(HAVE_PRMAP_SGI_T, 0)
fi

dnl
dnl  Test for socklen_t
dnl
AC_CACHE_CHECK([for socklen_t], fam_cv_have_socklen_t, AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>], [socklen_t len; struct sockaddr s; accept(0, &s, &len); ], fam_cv_have_socklen_t=yes, fam_cv_have_socklen_t=no))
if test "$fam_cv_have_socklen_t" = "yes"; then
    AC_DEFINE(CONFIG_SOCKLEN_T, socklen_t)
else
    AC_DEFINE(CONFIG_SOCKLEN_T, int)
fi

dnl
dnl  Test for built-in C++ bool type
dnl
AC_CACHE_CHECK([for built-in bool], fam_cv_have_bool, AC_TRY_COMPILE(, [bool foo = true; if(foo) foo = false; ], fam_cv_have_bool=yes, fam_cv_have_bool=no))
if test "$fam_cv_have_bool" = "yes"; then
    AC_DEFINE(HAVE_BOOL, 1)
else
    AC_DEFINE(HAVE_BOOL, 0)
fi


dnl
dnl  Test for C++ namespace support
dnl
AC_CACHE_CHECK([for C++ namespace support], fam_cv_have_namespace, AC_TRY_RUN([namespace foo { int bar(void) { return 0; } } int main(void) { return foo::bar(); } ], fam_cv_have_namespace=yes, fam_cv_have_namespace=no, fam_cv_have_namespace=no))
if test "$fam_cv_have_namespace" = "yes"; then
    AC_DEFINE(HAVE_NAMESPACE, 1)
else
    AC_DEFINE(HAVE_NAMESPACE, 0)
fi

dnl
dnl  Test for IRIX xtab/Linux knfs xtab/no xtab support.
dnl
dnl AC_MSG_CHECKING([for IRIX xtab support])
if test `uname` = 'IRIX' || test `uname` = 'IRIX64'; then
    AC_DEFINE(HAVE_IRIX_XTAB_VERIFICATION, 1)
fi
dnl XXX  This should test for knfs on Linux, too.


dnl dnl
dnl dnl  This is lame.  Here's a list of flags which are different (or where we
dnl dnl  want different behaviors) depending on whether we're using CC on IRIX
dnl dnl  or g++ on Linux.  And if we're using g++ on IRIX... well, ignore that
dnl dnl  squeaking sound.
dnl dnl
dnl if test -n "$GXX"; then
dnl     dnl WOFF="-Wall -Wtemplate-debugging"
dnl     WOFF="-Wall"
dnl     OPTIMIZER="-g"
dnl     CSTYLE=
dnl     MKDEPFILE=
dnl dnl     MKDEPFILE='$(OBJECTS:.o=.d)'
dnl     MKDEPOPT="-MD"
dnl     CXXTEMPLATES=
dnl dnl     CXXTEMPLATES=-Wtemplate-debugging
dnl else
dnl     dnl  1209 - remark - controlling expression (in assertion or loop?) is
dnl     dnl         constant
dnl     dnl  1355 - remark - extra ";" ignored
dnl     WOFF="-fullwarn -woff 1209,1355"
dnl     OPTIMIZER="-g"
dnl     dnl  XXX THE NEXT LINE IS LAME
dnl     CSTYLE="-mips3 -n32"
dnl     dnl  The Makedepend stuff is pointless because it's not being included
dnl     dnl  in the makefile.  How to fix that?  You can't just go
dnl     dnl  "sinclude $MKDEPFILE" because the g++ stuff uses a bunch of .d files.
dnl     dnl  (The compiler doesn't actually read the Makedepend file & determine
dnl     dnl  which files it needs to update, right?)
dnl     MKDEPFILE=Makedepend
dnl     MKDEPOPT='-MDupdate $(MKDEPFILE)'
dnl dnl     MKDEPOPT=
dnl dnl     GCXXINCS='-nostdinc -I$(INCLDIR)/CC -I$(INCLDIR)'
dnl     CXXTEMPLATES="-ptused"
dnl fi
AC_SUBST(MKDEPFILE)

dnl dnl  We will stomp CXXFLAGS here.
dnl CXXFLAGS="$WOFF $OPTIMIZER $CSTYLE $MKDEPOPT $CXXTEMPLATES"
dnl echo "setting CXXFLAGS = $CXXFLAGS"

dnl
dnl  See if "echo" needs -e flag.
dnl
AC_PATH_PROG(ECHO, echo)
AC_MSG_CHECKING([for echo -e flag])
if test "`$ECHO -e foo`" = 'foo'; then
    ECHO="$ECHO -e"
fi
AC_SUBST(ECHO)
AC_MSG_RESULT($ECHO)


dnl
dnl  Checks for library functions.
dnl
dnl  (we don't need any of these for the simple tcpmux test...  we will need to
dnl  fix many of these later, though, and comment them in.)
dnl
dnl AC_PROG_GCC_TRADITIONAL
dnl AC_HEADER_MAJOR
dnl AC_FUNC_STRFTIME
dnl AC_FUNC_UTIME_NULL
dnl AC_FUNC_VPRINTF
dnl AC_CHECK_FUNCS(getcwd gethostname gettimeofday getwd mkdir putenv rmdir select socket strdup strerror strspn strtol strtoul)

SUPPORT_OBJS=
dnl AC_CHECK_FUNCS(snprintf, have_snprintf=yes, have_snprintf=no)
dnl if test "$have_snprintf" = "yes"; then
dnl     AC_DEFINE(HAVE_SNPRINTF)
    snprintf_o=
dnl else
dnl     snprintf_o=snprintf.o
dnl     SUPPORT_OBJS="$SUPPORT_OBJS \$\(top_srcdir\)/support/snprintf.o"
dnl fi
AC_SUBST(snprintf_o)
dnl 
dnl AC_CHECK_FUNCS(foo, have_foo=yes, have_foo=no)
dnl if test "$have_foo" = "yes"; then
dnl     AC_DEFINE(HAVE_FOO)
    foo_o=
dnl else
dnl     foo_o=foo.o
dnl     SUPPORT_OBJS="$SUPPORT_OBJS \$\(top_srcdir\)/support/foo.o"
dnl fi
AC_SUBST(foo_o)



dnl
dnl  This adds #!gmake as the first line of each of these files.  We need this
dnl  on IRIX to use gmake instead of smake/pmake/etc., which will croak on the
dnl  gmake Makefiles.
dnl
AC_OUTPUT_COMMANDS(
[
if test `uname` = 'IRIX' || test `uname` = 'IRIX64'; then
    TMPFILE=configure.tmp
    for f in $CONFIG_FILES; do
        if test `basename $f` != 'Makefile'; then
#            echo "skipping        $f"
            continue
        fi
        echo "adding #!gmake to $f"
        if test -s $TMPFILE; then
            echo "gahh, file $TMPFILE already exists"
            exit 1
        fi
        mv $f $TMPFILE
        echo '#!gmake' > $f
        cat $TMPFILE >> $f
        rm $TMPFILE
    done
fi
])

dnl
dnl  This removes lines starting with ## from fam.conf.
dnl
AC_OUTPUT_COMMANDS(
[
    TMPFILE=configure.tmp
    for f in $CONFIG_FILES; do
        if test `basename $f` != 'fam.conf'; then
            continue
        fi
        echo "removing maintainer comments from $f"
        if test -s $TMPFILE; then
            echo "gahh, file $TMPFILE already exists"
            exit 1
        fi
        mv $f $TMPFILE
        sed -e "/^##/ d" < $TMPFILE > $f
        rm $TMPFILE
    done
])

dnl
dnl  This grief is for replacing XXX_FAM_CONF with $FAM_CONF
dnl  in the fam(1M) man page.  (Simply putting @FAM_CONF@ in
dnl  fam.1m.in puts the string "$sysconfdir/fam.conf" in the
dnl  man page, which isn't acceptable.  Isn't there a way to make
dnl  autoconf handle this??)
dnl
dnl  While we're at it, we also remove lines starting with .\"##,
dnl  and fiddle with lines starting with .\"IRIX depending on
dnl  whether we're building on Linux or IRIX.
dnl
AC_OUTPUT_COMMANDS(
[
    TMPFILE=configure.tmp
    for f in $CONFIG_FILES; do
        if test `basename $f` != 'fam.1m'; then
            continue
        fi
        echo "replacing XXX_FAM_CONF with $FAM_CONF and removing maintainer comments in $f"
        if test -s $TMPFILE; then
            echo "gahh, file $TMPFILE already exists"
            exit 1
        fi
        mv $f $TMPFILE
        if test `uname` = 'IRIX' || test `uname` = 'IRIX64'; then
            #  remove leading .\"IRIX parts so that the lines will be
            #  printed on IRIX.
            sed -e '/^\.\\"##/ d' -e "s#XXX_FAM_CONF#$FAM_CONF#" -e 's/^\.\\"IRIX[ 	]\{0,2\}//' < $TMPFILE > $f
        else
            sed -e '/^\.\\"##/ d' -e "s#XXX_FAM_CONF#$FAM_CONF#" -e  '/^\.\\"IRIX/ d' < $TMPFILE > $f
        fi
        rm $TMPFILE
    done
], [prefix=$prefix ; sysconfdir=$sysconfdir ; FAM_CONF=$FAM_CONF])

dnl
dnl  The list of files to generate.
dnl
AC_OUTPUT(
    Makefile 
    build/Makefile
    build/rpm/Makefile
    build/rpm/rpm.spec
    fam/Makefile
    fam/fam.conf
    include/Makefile
    libfam/Makefile
    man/Makefile
    man/fam.1m
    support/Makefile
    test/Makefile
    util/Makefile
    util/editconf/Makefile
)

dnl 
dnl  fam is a good deal less interesting without imon.
dnl 
if test "$have_imon" != 'yes'; then
    cat << EOF

  ******************************************************************
  *                                                                *
  *  Note!  Kernel support for imon was not detected.  fam should  *
  *  still work, but it will have to poll monitored filesystems    *
  *  instead of receiving file operation events from the kernel.   *
  *                                                                *
  *  If you think your kernel has imon, see what this script is    *
  *  looking for (on Linux, probably /usr/include/linux/imon.h),   *
  *  fix the problem (perhaps by adding a link), and run this      *
  *  again.  (You probably need to remove config.cache first.)     *
  *                                                                *
  *  See http://oss.sgi.com/projects/fam/ for more information.    *
  *                                                                *
  ******************************************************************

EOF
fi