#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_PREREQ(2.57)
AC_INIT(FULL-PACKAGE-NAME, VERSION, BUG-REPORT-ADDRESS)
AC_CONFIG_SRCDIR([src/main.c])
AC_CONFIG_HEADERS([src/config.h])
AC_CONFIG_HEADERS([src/newt_core/incs/NewtConf.h])

# Checks for programs.
AC_PROG_CC
AC_PROG_YACC
AC_PROG_LEX

AC_CHECK_TOOL(AR, ar)
AC_CHECK_TOOL(RANLIB, ranlib, :)

#
AC_CANONICAL_SYSTEM

case "$target_os" in
  freebsd*)
	export LDFLAGS=-L/usr/local/lib
	export CPPFLAGS=-I/usr/local/include
    ;;
esac


# Checks for libraries.
#AC_CHECK_LIB(iconv, iconv_open)

SAVE_LIBS="$LIBS"
LIBS="$LIBS -liconv"
result='no'
AC_MSG_CHECKING(checking for libiconv)
AC_TRY_LINK([
	#include <stdlib.h>
	#include <iconv.h>
	], [
	iconv_t	cd = iconv_open("", "");
	iconv(cd, NULL, NULL, NULL, NULL);
	iconv_close(cd);
	],
	AC_DEFINE(HAVE_LIBICONV)
	result='yes',
	LIBS="$SAVE_LIBS")
AC_MSG_RESULT($result)


HAVE_DLOPEN='no'
AC_MSG_CHECKING(checking for dlopen)
AC_TRY_LINK([
	#include <dlfcn.h>
	], [
    void *	install_call;
    void *	lib;

    lib = dlopen("", RTLD_LAZY);
	install_call = dlsym(lib, "");
	dlclose(lib);
	],
	HAVE_DLOPEN='yes',

	SAVE_LIBS="$LIBS"
	LIBS="$LIBS -ldl"
	AC_TRY_LINK([
		#include <dlfcn.h>
		], [
	    void *	install_call;
    	void *	lib;

	    lib = dlopen("", RTLD_LAZY);
		install_call = dlsym(lib, "");
		dlclose(lib);
		],
		HAVE_DLOPEN='yes'
		LIBDL=" -ldl")
	LIBS="$SAVE_LIBS")
AC_MSG_RESULT($HAVE_DLOPEN)


# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS([inttypes.h memory.h stdint.h stdlib.h string.h unistd.h termios.h endian.h machine/endian.h])

# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_TYPE_SIZE_T

# Checks for library functions.
AC_FUNC_MALLOC
AC_FUNC_MEMCMP
AC_FUNC_REALLOC
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([getcwd memchr memmove memset regcomp strcasecmp strchr strdup strncasecmp mmap chdir getpwnam])


#
# AC_CANONICAL_SYSTEM

case "$target_os" in
  darwin*)
    LIBNEWT_LDSHARED='$(CC) -dynamic -bundle -undefined suppress -flat_namespace'
    DLEXT='dylib'
    ;;
  cygwin*|mingw*)
	AC_DEFINE(__WIN32__)
	HAVE_DLOPEN='yes'
    NEWT_LDIMPORT='$(build)/libnewt.a'
    NEWT_LDFLAGS='-Wl,--export-all-symbols,--out-implib=$(LDIMPORT)'
    LIBNEWT_LDSHARED='$(CC) -shared'
    LIBREGEX='$(LIBREGEX)'
    DLEXT='dll'
    ;;
  linux*)
#    NEWT_LDFLAGS='-ldl -rdynamic'
    NEWT_LDFLAGS='-rdynamic'
    LIBNEWT_LDSHARED='$(CC) -shared'
    DLEXT='so'
    ;;
  freebsd*)
    NEWT_LDFLAGS='-rdynamic'
    LIBNEWT_LDSHARED='$(CC) -shared'
    DLEXT='so'
    ;;
  beos*)
#    NEWT_LDFLAGS='-ldl'
    LIBNEWT_LDSHARED='$(CC) -nostart $(build)/_APP_'
    LINK_NEWT_APP_='cd $@; ln -s newt _APP_'
    DLEXT='so'
    ;;
  *)
    NEWT_LDFLAGS='-rdynamic'
    LIBNEWT_LDSHARED='$(CC) -shared'
    DLEXT='so'
    ;;
esac


case "$target_vendor" in
  *ipod*)
	AC_DEFINE(__IPOD__)
    NEWT_LDFLAGS=
    ;;
esac

case "$HAVE_DLOPEN" in
  yes)
	AC_DEFINE(HAVE_DLOPEN)
	MAKE_EXT='ext'
    ;;
esac

test "x$prefix" = xNONE && prefix=$ac_default_prefix

AC_ARG_WITH(sitedir,
	AS_HELP_STRING([--with-sitedir=DIR],
		[site libraries in DIR [[PREFIX/lib/newt0]]]),
	[sitedir=$withval],
	[sitedir='${prefix}/lib/newt0'])
SITE_DIR="`eval \"echo ${sitedir}\"`"

AC_ARG_WITH(libffidir,
	AS_HELP_STRING([--with-libffidir=DIR],
		[where libffi libraries can be found [[PREFIX]]]),
	[libffidir=$withval],
	[libffidir='${prefix}'])

AC_ARG_ENABLE(compat,
	AS_HELP_STRING([--enable-compat],
		[enable compatibility with the Newton, and break many features on the desktop]),
		[compat='yes'],
		[compat='no'])

AC_ARG_ENABLE(contrib,
	AS_HELP_STRING([--enable-contrib],
		[include contrib packages (inwt, NativeCalls, and NewtObjC)]),
		[MAKE_CONTRIB='contrib'])

test "x$compat" = xno && AC_DEFINE(__NAMED_MAGIC_POINTER__)

AC_DEFINE_UNQUOTED(__PLATFORM__, "$target_os")
AC_DEFINE_UNQUOTED(__DYLIBSUFFIX__, ".$DLEXT")
AC_DEFINE_UNQUOTED(__LIBDIR__, "${SITE_DIR}")

NEWT_LDFLAGS="$NEWT_LDFLAGS $LIBDL"

AC_SUBST(NEWT_LDIMPORT)
AC_SUBST(NEWT_LDFLAGS)
AC_SUBST(LIBNEWT_LDSHARED)
AC_SUBST(LINK_NEWT_APP_)
AC_SUBST(DLEXT)
AC_SUBST(MAKE_EXT)
AC_SUBST(MAKE_CONTRIB)
AC_SUBST(BINDIR)
AC_SUBST(sitedir)
AC_SUBST(libffidir)
AC_SUBST(__NAMED_MAGIC_POINTER__)

AC_SUBST(LIBREGEX)

dnl
dnl How to create static libraries
dnl
AC_PROG_RANLIB
AC_PATH_PROG(AR, ar)
if test "x$AR" = "x:"; then
    AC_MSG_ERROR(Configure could not find the library archiver, aborting.)
fi
if test "x$RANLIB" != "x:"; then
    LIBCOMMAND="$AR cr"
else
    LIBCOMMAND="$AR crs"
fi
AC_SUBST(LIBCOMMAND)
LIBEXT=".a"
AC_SUBST(LIBEXT)


AC_CONFIG_FILES([Makefile
                 ext/protoFILE/Makefile
                 ext/protoREGEX/Makefile
                 contrib/inwt/Makefile
                 contrib/NativeCalls/Makefile
                 contrib/NewtObjC/Makefile])
AC_OUTPUT