1 dnl acinclude.m4 -- Extra macros needed for GNU make.
3 dnl Automake will incorporate this into its generated aclocal.m4.
5 dnl ---------------------------------------------------------------------------
6 dnl Got this from the lynx 2.8 distribution.
7 dnl by T.E.Dickey <dickey@clark.net>
8 dnl and Jim Spath <jspath@mail.bcpl.lib.md.us>
9 dnl and Philippe De Muyter <phdm@macqel.be>
11 dnl Created: 1997/1/28
12 dnl Updated: 1997/12/23
13 dnl ---------------------------------------------------------------------------
14 dnl After checking for functions in the default $LIBS, make a further check
15 dnl for the functions that are netlib-related (these aren't always in the
16 dnl libc, etc., and have to be handled specially because there are conflicting
17 dnl and broken implementations.
18 dnl Common library requirements (in order):
19 dnl -lresolv -lsocket -lnsl
23 AC_DEFUN([CF_NETLIBS],[
25 AC_MSG_CHECKING(for network libraries)
26 AC_CACHE_VAL(cf_cv_netlibs,[
27 AC_MSG_RESULT(working...)
30 AC_CHECK_FUNCS(gethostname,,[
31 CF_RECHECK_FUNC(gethostname,nsl,cf_cv_netlibs,[
32 CF_RECHECK_FUNC(gethostname,socket,cf_cv_netlibs)])])
34 # FIXME: sequent needs this library (i.e., -lsocket -linet -lnsl), but
35 # I don't know the entrypoints - 97/7/22 TD
36 AC_CHECK_LIB(inet,main,cf_cv_netlibs="-linet $cf_cv_netlibs")
38 if test "$ac_cv_func_lsocket" != no ; then
39 AC_CHECK_FUNCS(socket,,[
40 CF_RECHECK_FUNC(socket,socket,cf_cv_netlibs,[
41 CF_RECHECK_FUNC(socket,bsd,cf_cv_netlibs)])])
44 AC_CHECK_FUNCS(gethostbyname,,[
45 CF_RECHECK_FUNC(gethostbyname,nsl,cf_cv_netlibs)])
47 AC_CHECK_FUNCS(strcasecmp,,[
48 CF_RECHECK_FUNC(strcasecmp,resolv,cf_cv_netlibs)])
50 LIBS="$LIBS $cf_cv_netlibs"
51 test $cf_test_netlibs = no && echo "$cf_cv_netlibs" >&AC_FD_MSG
53 dnl ---------------------------------------------------------------------------
54 dnl Re-check on a function to see if we can pick it up by adding a library.
55 dnl $1 = function to check
56 dnl $2 = library to check in
57 dnl $3 = environment to update (e.g., $LIBS)
58 dnl $4 = what to do if this fails
60 dnl This uses 'unset' if the shell happens to support it, but leaves the
61 dnl configuration variable set to 'unknown' if not. This is a little better
62 dnl than the normal autoconf test, which gives misleading results if a test
63 dnl for the function is made (e.g., with AC_CHECK_FUNC) after this macro is
64 dnl used (autoconf does not distinguish between a null token and one that is
66 AC_DEFUN([CF_RECHECK_FUNC],[
68 CF_UPPER(cf_tr_func,$1)
69 AC_DEFINE_UNQUOTED(HAVE_$cf_tr_func)
73 unset ac_cv_func_$1 2>/dev/null
77 dnl ---------------------------------------------------------------------------
78 dnl Make an uppercase version of a variable
83 $1=`echo $2 | tr '[a-z]' '[A-Z]'`
87 dnl ---------------------------------------------------------------------------
88 dnl Got this from the GNU fileutils 3.16r distribution
89 dnl by Paul Eggert <egger@twinsun.com>
90 dnl ---------------------------------------------------------------------------
92 dnl The problem is that the default compilation flags in Solaris 2.6 won't
93 dnl let programs access large files; you need to tell the compiler that
94 dnl you actually want your programs to work on large files. For more
95 dnl details about this brain damage please see:
96 dnl http://www.sas.com/standards/large.file/x_open.20Mar96.html
100 # If available, prefer support for large files unless the user specified
101 # one of the CPPFLAGS, LDFLAGS, or LIBS variables.
102 AC_MSG_CHECKING(whether large file support needs explicit enabling)
106 ac_shellvars='CPPFLAGS LDFLAGS LIBS'
107 for ac_shellvar in $ac_shellvars; do
109 CPPFLAGS) ac_lfsvar=LFS_CFLAGS ;;
110 *) ac_lfsvar=LFS_$ac_shellvar ;;
112 eval test '"${'$ac_shellvar'+set}"' = set && ac_set=$ac_shellvar
113 (getconf $ac_lfsvar) >/dev/null 2>&1 || { ac_result=no; break; }
114 ac_getconf=`getconf $ac_lfsvar`
115 ac_getconfs=$ac_getconfs$ac_getconf
116 eval ac_test_$ac_shellvar=\$ac_getconf
118 case "$ac_result$ac_getconfs" in
121 case "$ac_result$ac_set" in
122 yes?*) ac_result="yes, but $ac_set is already set, so use its settings"
124 AC_MSG_RESULT($ac_result)
127 for ac_shellvar in $ac_shellvars; do
128 eval $ac_shellvar=\$ac_test_$ac_shellvar