source: heimdal/trunk/cf/check-man.m4

dnl $Id$
dnl check how to format manual pages
dnl

AC_DEFUN([rk_CHECK_MAN],
[AC_PATH_PROG(NROFF, nroff)
AC_PATH_PROG(GROFF, groff)
AC_CACHE_CHECK(how to format man pages,ac_cv_sys_man_format,
[cat > conftest.1 << END
.Dd January 1, 1970
.Dt CONFTEST 1
.Sh NAME
.Nm conftest
.Nd foobar
END

if test "$NROFF" ; then
        for i in "-mdoc" "-mandoc"; do
                if "$NROFF" $i conftest.1 2> /dev/null | \
                        grep Jan > /dev/null 2>&1 ; then
                        ac_cv_sys_man_format="$NROFF $i"
                        break
                fi
        done
fi
if test "$ac_cv_sys_man_format" = "" -a "$GROFF" ; then
        for i in "-mdoc" "-mandoc"; do
                if "$GROFF" -Tascii $i conftest.1 2> /dev/null | \
                        grep Jan > /dev/null 2>&1 ; then
                        ac_cv_sys_man_format="$GROFF -Tascii $i"
                        break
                fi
        done
fi
if test "$ac_cv_sys_man_format"; then
        ac_cv_sys_man_format="$ac_cv_sys_man_format \[$]< > \[$]@"
fi
])
if test "$ac_cv_sys_man_format"; then
        CATMAN="$ac_cv_sys_man_format"
        AC_SUBST(CATMAN)
fi
AM_CONDITIONAL(CATMAN, test "$CATMAN")
AC_CACHE_CHECK(extension of pre-formatted manual pages,ac_cv_sys_catman_ext,
[if grep _suffix /etc/man.conf > /dev/null 2>&1; then
        ac_cv_sys_catman_ext=0
else
        ac_cv_sys_catman_ext=number
fi
])
if test "$ac_cv_sys_catman_ext" = number; then
        CATMANEXT='$$section'
else
        CATMANEXT=0
fi
AC_SUBST(CATMANEXT)
])