dnl
dnl Software pw3270, desenvolvido com base nos códigos fontes do  C3270  e  X3270
dnl (Paul Mattes Paul.Mattes@usa.net), de emulação de terminal 3270 para acesso a
dnl aplicativos mainframe. Registro no INPI sob o nome G3270.
dnl
dnl Copyright (C) <2008> <Banco do Brasil S.A.>
dnl
dnl Este programa é software livre. Você pode redistribuí-lo e/ou modificá-lo sob
dnl os termos da GPL v.2 - Licença Pública Geral  GNU,  conforme  publicado  pela
dnl Free Software Foundation.
dnl
dnl Este programa é distribuído na expectativa de  ser  útil,  mas  SEM  QUALQUER
dnl GARANTIA; sem mesmo a garantia implícita de COMERCIALIZAÇÃO ou  de  ADEQUAÇÃO
dnl A QUALQUER PROPÓSITO EM PARTICULAR. Consulte a Licença Pública Geral GNU para
dnl obter mais detalhes.
dnl
dnl Você deve ter recebido uma cópia da Licença Pública Geral GNU junto com este
dnl programa;  se  não, escreva para a Free Software Foundation, Inc., 59 Temple
dnl Place, Suite 330, Boston, MA, 02111-1307, USA
dnl
dnl Contatos:
dnl
dnl perry.werneck@gmail.com	(Alexandre Perry de Souza Werneck)
dnl erico.mendonca@gmail.com	(Erico Mascarenhas de Mendonça)
dnl

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

dnl The minimum version of autoconf required.
AC_PREREQ(2.59)

dnl Initialise automake with the package name, version and
dnl bug-reporting address.
AC_INIT([python-pw3270], [5.1], [perry.werneck@gmail.com])

dnl Place auxilliary scripts here.
AC_CONFIG_AUX_DIR([scripts])

dnl Compute the canonical host-system type
AC_CANONICAL_HOST

dnl Put macro definitions here (though they aren't used).
AC_CONFIG_HEADER([src/config.h])

dnl Initialise automake stuff.
AM_INIT_AUTOMAKE

dnl Check for iconv
AM_ICONV

dnl Checks for programs.
AC_PROG_CXX
AC_PROG_CC
AC_PROG_SED
AC_PROG_LN_S

AC_LANG([C++])

dnl ---------------------------------------------------------------------------
dnl Initialize defaults
dnl ---------------------------------------------------------------------------
DLLFLAGS="-shared -Wl,-soname,\$(@F)"
DBG_CFLAGS="-DDEBUG=1"
RLS_CFLAGS="-DNDEBUG=1"

dnl ---------------------------------------------------------------------------
dnl Check for OS specifics
dnl ---------------------------------------------------------------------------

case "$host" in
	*-mingw32)

		EXEEXT=".exe"
		DLLPREFIX=""
		DLLEXT=".dll"

		CFLAGS="$CFLAGS -Wall -Werror -D_WIN32_WINNT=0x0600"
		LIBS="$LIBS -lws2_32 -lntdll -lwtsapi32"

		;;

 	*)
		EXEEXT=""

		DLLEXT=".so"

		CFLAGS="$CFLAGS -Wall -Werror"

		# LIBS="-Wl,--no-allow-shlib-undefined,--as-needed,--no-undefined -pthread $LIBS"
		LIBS="-pthread $LIBS"

esac

AC_SUBST(LIBS)

AC_SUBST(DBG_CFLAGS)
AC_SUBST(RLS_CFLAGS)

AC_SUBST(DBG_LDFLAGS)
AC_SUBST(RLS_LDFLAGS)

AC_SUBST(EXEEXT)
AC_SUBST(DLLEXT)
AC_SUBST(DLLPREFIX)

dnl ---------------------------------------------------------------------------
dnl Check for other programs
dnl ---------------------------------------------------------------------------
AC_PATH_TOOL([STRIP], [strip])
AC_PATH_TOOL([RPMBUILD], [rpmbuild], [no])
AC_PATH_TOOL([MAKENSIS], [makensis], [no])
AC_PATH_TOOL([VALGRIND], [valgrind], [no])
AC_PATH_TOOL([WINDRES], [windres], [no])
AC_PATH_TOOL([ZIP], [zip], [zip])
AC_PATH_TOOL([FIND], [find], [find])
AC_PATH_TOOL([AR], [ar], [ar])

PKG_CHECK_EXISTS

dnl ---------------------------------------------------------------------------
dnl Version info
dnl ---------------------------------------------------------------------------

app_vrs_major=$(echo $VERSION | cut -d. -f1)
app_vrs_minor=$(echo $VERSION | cut -d. -f2)

AC_SUBST(PACKAGE_MAJOR_VERSION,$app_vrs_major)
AC_SUBST(PACKAGE_MINOR_VERSION,$app_vrs_minor)

AC_DEFINE_UNQUOTED(PACKAGE_MAJOR_VERSION, $app_vrs_major)
AC_DEFINE_UNQUOTED(PACKAGE_MINOR_VERSION, $app_vrs_minor)

AC_SUBST(PACKAGE_MAJOR_VERSION,$app_vrs_major)
AC_SUBST(PACKAGE_MINOR_VERSION,$app_vrs_minor)

app_cv_description="Python binding for pw3270/lib3270"

AC_DEFINE_UNQUOTED(PACKAGE_DESCRIPTION,"$app_cv_description")
AC_SUBST(PACKAGE_DESCRIPTION,"$app_cv_description")

dnl ---------------------------------------------------------------------------
dnl Check for Python
dnl ---------------------------------------------------------------------------

PKG_CHECK_MODULES( [PYTHON], [python], AC_DEFINE(HAVE_PYTHON))

AC_SUBST(PYTHON_LIBS)
AC_SUBST(PYTHON_CFLAGS)

dnl ---------------------------------------------------------------------------
dnl Check for D-Bus
dnl ---------------------------------------------------------------------------

PKG_CHECK_MODULES( [DBUS], [dbus-1], AC_DEFINE(HAVE_DBUS), AC_MSG_NOTICE([ No DBUS support.]) )
AC_SUBST(DBUS_LIBS)
AC_SUBST(DBUS_CFLAGS)

dnl ---------------------------------------------------------------------------
dnl Check for integer types & library functions
dnl ---------------------------------------------------------------------------

AC_CHECK_TYPES([pid_t, uint8_t, uint16_t, uint32_t, int32_t, uint64_t, int64_t])
AC_CHECK_FUNCS(srandom random getopt asprintf vasprintf)
AC_CHECK_FUNCS(getaddrinfo sendfile poll eventfd statfs64)

dnl ---------------------------------------------------------------------------
dnl Check for libintl
dnl ---------------------------------------------------------------------------

AC_PATH_TOOL([XGETTEXT], [xgettext], [no])
AC_PATH_TOOL([MSGCAT], [msgcat], [no])
AC_PATH_TOOL([MSGINIT], [msginit], [no])
AC_PATH_TOOL([MSGMERGE], [msgmerge], [no])
AC_PATH_TOOL([MSGFMT], [msgfmt], [no])

AC_CHECK_HEADER(libintl.h, [
	AC_DEFINE(HAVE_LIBINTL, 1)
])

dnl ---------------------------------------------------------------------------
dnl Check for C++ 2011 support
dnl ---------------------------------------------------------------------------
AC_DEFUN([AX_CHECK_COMPILE_FLAG],
[AC_PREREQ(2.59)dnl for _AC_LANG_PREFIX
AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_[]_AC_LANG_ABBREV[]flags_$4_$1])dnl
AC_CACHE_CHECK([whether _AC_LANG compiler accepts $1], CACHEVAR, [
  ax_check_save_flags=$[]_AC_LANG_PREFIX[]FLAGS
  _AC_LANG_PREFIX[]FLAGS="$[]_AC_LANG_PREFIX[]FLAGS $4 $1"
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
    [AS_VAR_SET(CACHEVAR,[yes])],
    [AS_VAR_SET(CACHEVAR,[no])])
  _AC_LANG_PREFIX[]FLAGS=$ax_check_save_flags])
AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
  [m4_default([$2], :)],
  [m4_default([$3], :)])
AS_VAR_POPDEF([CACHEVAR])dnl
])dnl AX_CHECK_COMPILE_FLAGS

AX_CHECK_COMPILE_FLAG([-std=gnu++11], [CFLAGS="$CFLAGS -std=gnu++11"])

dnl ---------------------------------------------------------------------------
dnl Check for ELF symbol visibility support
dnl ---------------------------------------------------------------------------
m4_define([GLIB_CHECK_COMPILE_WARNINGS],
[m4_ifvaln([$1], [AC_LANG_CONFTEST([$1])])dnl
rm -f conftest.$ac_objext
glib_ac_compile_save="$ac_compile"
ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext'
AS_IF([_AC_EVAL_STDERR($ac_compile) &&
         AC_TRY_COMMAND([(if test -s conftest.err; then false ; else true; fi)])],
      [$2],
      [echo "$as_me: failed program was:" >&AS_MESSAGE_LOG_FD
cat conftest.$ac_ext >&AS_MESSAGE_LOG_FD
m4_ifvaln([$3],[$3])dnl])
ac_compile="$glib_ac_compile_save"
rm -f conftest.$ac_objext conftest.err m4_ifval([$1], [conftest.$ac_ext])[]dnl
])# GLIB_CHECK_COMPILE_WARNINGS

AC_MSG_CHECKING(for GNUC visibility attribute)
GLIB_CHECK_COMPILE_WARNINGS([
void
__attribute__ ((visibility ("hidden")))
     f_hidden (void)
{
}
void
__attribute__ ((visibility ("internal")))
     f_internal (void)
{
}
void
__attribute__ ((visibility ("protected")))
     f_protected (void)
{
}
void
__attribute__ ((visibility ("default")))
     f_default (void)
{
}
int main (int argc, char **argv)
{
        f_hidden();
        f_internal();
        f_protected();
        f_default();
        return 0;
}
],g_have_gnuc_visibility=yes,g_have_gnuc_visibility=no)
AC_MSG_RESULT($g_have_gnuc_visibility)
if test x$g_have_gnuc_visibility = xyes; then
  AC_DEFINE(HAVE_GNUC_VISIBILITY, 1, [supports GCC visibility attributes])
fi

dnl ---------------------------------------------------------------------------
dnl Check for compiler visibility flag
dnl ---------------------------------------------------------------------------
dnl AC_MSG_CHECKING(whether $CC accepts -fvisibility=hidden)
dnl AC_CACHE_VAL(app_cv_fvisibility_ok,
dnl [ac_save_cc="$CC"
dnl CC="$CC -fvisibility=hidden"
dnl AC_TRY_RUN([int main() { return 0; }],
dnl   app_cv_fvisibility_ok=yes,
dnl   app_cv_fvisibility_ok=no,
dnl   app_cv_fvisibility_ok=no)
dnl CC="$ac_save_cc"])
dnl AC_MSG_RESULT($app_cv_fvisibility_ok)
dnl if test $app_cv_fvisibility_ok = yes; then
dnl   CFLAGS="$CFLAGS -fvisibility=hidden"
dnl fi

dnl ---------------------------------------------------------------------------
dnl Check for pic
dnl ---------------------------------------------------------------------------
AC_ARG_ENABLE([pic],
	[AS_HELP_STRING([--disable-pic], [disable support for PIC libraries (required to compile on 64bits)])],
[
	app_cv_pic="$enableval"
],[

	case "$host" in
		*-mingw32)
			app_cv_pic="no"
			;;

	*)
		if test "$host_cpu" = "x86_64"; then
			app_cv_pic="yes"
		else
			app_cv_pic="no"
		fi
	esac
])

if test "$app_cv_pic" == "yes"; then
	CFLAGS="$CFLAGS -fPIC"
fi

dnl ---------------------------------------------------------------------------
dnl Output config
dnl ---------------------------------------------------------------------------

AC_SUBST(BASEDIR,$ac_pwd)

dnl ---------------------------------------------------------------------------
dnl Configure which files to generate.
dnl ---------------------------------------------------------------------------

AC_CONFIG_FILES(Makefile)

dnl ---------------------------------------------------------------------------
dnl Output the generated config.status script.
dnl ---------------------------------------------------------------------------
AC_OUTPUT