configure.in

dnl 
dnl COPYRIGHT NOTICE HERE
dnl

dnl Process this file with autoconf to produce a configure script.

AC_REVISION([$Id: ])

AC_INIT(betweenness.c) dnl Any unique file in this directory will do
AC_PREREQ(2.53)

dnl options

AC_ARG_WITH(incdirs,
    [  --with-incdirs=DIRS     search for include files in DIRS])
AC_ARG_WITH(libdirs,
    [  --with-libdirs=DIRS     search for libraries in DIRS])
AC_ARG_WITH(inclibdirs,
    [  --with-inclibdirs=DIRS  same as --with-incdirs=DIRS --with-libdirs=DIRS])
AC_ARG_WITH(inclibprefix,
    [  --with-inclibprefix=DIR same as --with-incdirs=DIR/include --with-libdirs=DIR/lib])
AC_ARG_WITH(incdir) dnl because I never remember if it's singular or plural
AC_ARG_WITH(libdir) dnl because I never remember if it's singular or plural
AC_ARG_WITH(inclibdir) dnl because I never remember if it's singular or plural
# for development use

# Using "include" in Makefiles is not portable.  Even if it's supported, it
# may interpret relative directories differently.  So instead of having
# Makefiles use include, we concatenate the would-be include files onto
# every Makefile that needs them.


dnl builtin(include, caida-config/caida.m4)      dnl
dnl AC_CONFIG_HEADER(config.h)
dnl AC_PREFIX_DEFAULT(/usr/local)


dnl Checks for programs.

AC_PROG_CC
AC_PROG_CXX
dnl AC_PROG_INSTALL
dnl AC_PROG_RANLIB

dnl CRL_DIRS(src, dst[, prefix[, suffix]])
AC_DEFUN(CRL_DIRS, [
    if test "${$1}" != "no" && test "${$1}" != ""; then
	for dir in ${$1}; do
	    $2="${$2} $3${dir}$4"
	done
    fi
])

CRL_DIRS(with_incdirs, CPPFLAGS, -I)
CRL_DIRS(with_incdir, CPPFLAGS, -I)
CRL_DIRS(with_inclibdirs, CPPFLAGS, -I)
CRL_DIRS(with_inclibdir, CPPFLAGS, -I)
CRL_DIRS(with_inclibprefix, CPPFLAGS, -I, /include)

LIBDIRS="-L/opt/local/lib -L/usr/local/lib"
CRL_DIRS(with_libdirs, LIBDIRS, -L)
CRL_DIRS(with_libdir, LIBDIRS, -L)
CRL_DIRS(with_inclibdirs, LIBDIRS, -L)
CRL_DIRS(with_inclibdir, LIBDIRS, -L)
CRL_DIRS(with_inclibprefix, LIBDIRS, -L, /lib)

dnl Must append LIBDIRS to LDFLAGS now so it's present for AC_CHECK_LIB.
dnl (LIBDIRS will not work in the OTHER-LIBRARIES argument of AC_CHECK_LIB
dnl on all platforms since it will _follow_ the -l option for the library
dnl being tested.)
LDFLAGS="$LDFLAGS $LIBDIRS"



AC_SEARCH_LIBS(JudyLCount, Judy, ,
    AC_MSG_ERROR([required library not found]))
AC_SEARCH_LIBS(gsl_fit_linear, gsl, LIBS="$LIBS -lgslcblas -lm",
    AC_MSG_WARN([required library not found]), -lgslcblas)



dnl CRL_SEARCH_INCLUDE_DIRS(HEADER, DIRECTORIES [, ACTION-IF-FOUND
dnl     [, ACTION-IF-NOT-FOUND]])
dnl Searches for HEADER with the default CPPFLAGS, and then with
dnl -I'DIRECTORY' appended to CPPFLAGS for each word in DIRECTORIES in turn.
dnl If the header is found, it defines SYMBOL, appends the required
dnl -I'DIRECTORY' to CPPFLAGS, and executes ACTION-IF-FOUND; otherwise,
dnl it executes ACTION-IF-NOT-FOUND and leaves CPPFLAGS untouched.
AC_DEFUN(CRL_SEARCH_INCLUDE_DIRS, [
    changequote(, )dnl
    define([ac_tr_hdr], translit($1, [abcdefghijklmnopqrstuvwxyz./-%], [ABCDEFGHIJKLMNOPQRSTUVWXYZ___%]))
    changequote([, ])dnl
    AC_MSG_CHECKING([for $1])
    AC_CACHE_VAL([coralreef_cv_header_dir_]ac_tr_hdr, [
	coralreef_cv_header_dir_[]ac_tr_hdr="no"
	ac_found=""
	ac_old_cppflags="$CPPFLAGS"
	for ac_dir in "" $2; do
	    if test -n "$ac_dir"; then
		CPPFLAGS="$CPPFLAGS -I$ac_dir"
	    fi
	    AC_TRY_CPP([#include <$1>], ac_found=1)
	    CPPFLAGS="$ac_old_cppflags"
	    if test -n "$ac_found"; then break; fi
	done
	if test -n "$ac_found"; then
	    coralreef_cv_header_dir_[]ac_tr_hdr="${ac_dir:-yes}"
	fi
    ])
    AC_MSG_RESULT([$coralreef_cv_header_dir_]ac_tr_hdr)
    if test "$coralreef_cv_header_dir_[]ac_tr_hdr" = "no"; then
	# not found
	$4
    else
	if test "$coralreef_cv_header_dir_[]ac_tr_hdr" = "yes"; then
	    ac_dir=""
	else
	    ac_dir="$coralreef_cv_header_dir_[]ac_tr_hdr"
	    CPPFLAGS="$CPPFLAGS -I$ac_dir"
	fi
	AC_DEFINE_UNQUOTED(ac_tr_hdr, [1${ac_dir:+  /* in $ac_dir */}])
	$3
    fi
])


AC_HEADER_STDC

AC_CHECK_HEADERS(unistd.h Judy.h)

CRL_SEARCH_INCLUDE_DIRS(gsl/gsl_fit.h, /opt/local/include /usr/local/include, ,
    AC_MSG_ERROR([required gsl headers not found.])
)


AC_C_BIGENDIAN
dnl CAIDA_TYPES()

AC_OUTPUT(Makefile)

AC_MSG_RESULT([])
AC_MSG_RESULT([Configuration complete.])