configure.in

# This whole script was taken and modified from a sample available on
# one of the libsdl web pages..  I'd give more definite credit, except
# that I've lost the links..  if someone knows where this all came from,
# please alert me at whiterabbit@users.sourceforge.net, and I'll provide
# proper attribution and a link.  I'm heavily indebted to this sample
# script for helping me begin to get autoconf working!

# This first line initializes autoconf and gives it a file that it can
# look for to make sure the source distribution is complete.
AC_INIT(README)

# The AM_INIT_AUTOMAKE macro tells automake the name and version number
# of the software package so it can generate rules for building a source
# archive.
AM_INIT_AUTOMAKE(hacknet, 0.0.7)

# We now have a list of macros which tell autoconf what tools we need to
# build our software, in this case "make", a C++ compiler, and "install".
# If we were creating a C program, we would use AC_PROC_CC instead of CXX.
AC_PROG_MAKE_SET
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_RANLIB

# This is a trick I learned at Loki - the current compiler for the alpha
# architecture doesn't produce code that works on all versions of the
# alpha processor.  This bit detects the current compile architecture
# and sets the compiler flags to produce portable binary code.
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
case "$target" in
    alpha*-*-linux*)
        CXXFLAGS="$CXXFLAGS -mcpu=ev4 -Wa,-mall"
        ;;
esac

dnl Checks for curses headers and functions.  (Does generic 'curses' ever have a color_set function?)
AC_CHECK_LIB(ncurses, initscr, 
             [ AC_DEFINE(HAVE_LIBNCURSES) 
	     AC_CHECK_LIB( ncurses, color_set, AC_DEFINE(HAS_COLOR_SET) )
	     CURSESLIB='-lncurses'; ], [ 
        AC_CHECK_LIB(curses, initscr, 
                     [ AC_DEFINE(HAVE_LIBCURSES) 
		     AC_CHECK_LIB( curses, color_set, AC_DEFINE(HAS_COLOR_SET) )
		     CURSESLIB='-lcurses'; ])
])

dnl AC_SUBST(CURSESINC)

AC_SUBST(CURSESLIB)

dnl *BSD puts threads into libc_r.  We can tell gcc/c++/g++/etc. to link
dnl libc_r instead of libc by passing the argument -pthread.
AC_CHECK_LIB(c_r, pthread_create,THREADLIB='-pthread', [
	AC_CHECK_LIB(pthread, pthread_create,THREADLIB='-lpthread')
	])
		
AC_SUBST(THREADLIB)

dnl Solaris (and others?) put socket code into libsocket instead of in
dnl libc.  So if it's not in libc, check libsocket.
AC_CHECK_LIB(socket,socket)

dnl Solaris (and others?) put hostname lookup into libnsl instead of
dnl libc.  So if it's not in libc, check nsl.
AC_CHECK_LIB(nsl,gethostbyname)

AC_CHECK_FUNCS(herror)


AC_HEADER_STDC
dnl AC_CHECK_HEADERS(fcntl.h sys/ioctl.h sys/time.h unistd.h netinet/in.h)

# Bleah.  If we don't have a socklen_t, switch it to an int for the sake of
# Cygwin, which seems to have decided that they might want to receive a
# packet with a negative number of bytes in it.

AC_MSG_CHECKING(whether 'socklen_t' is defined)
AC_TRY_COMPILE(

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h> 
,
[
socklen_t sin_size = sizeof(int);
],AC_MSG_RESULT(yes), AC_DEFINE(socklen_t,int) AC_MSG_RESULT(no))

AC_MSG_CHECKING(whether we use u_int or uint)
AC_TRY_COMPILE(

#include <sys/types.h>
,
[
u_int8_t size = sizeof(int);
],[AC_MSG_RESULT(u_int)], [ AC_DEFINE(NO_U_INT_T) AC_MSG_RESULT(uint)])



# Finally create all the generated files
# The configure script takes "file.in" and substitutes variables to produce
# "file".  In this case we are just generating the Makefiles, but this could
# be used to generate any number of automatically generated files.
AC_OUTPUT([
Makefile
server/Makefile
client/Makefile
ttyclient/Makefile
common/Makefile
doc/Makefile
])