215 lines
7.6 KiB
Plaintext
215 lines
7.6 KiB
Plaintext
#***************************************************************************
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# $Id$
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#
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# Copyright (C) 2008 by Daniel Stenberg et al
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#
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# Permission to use, copy, modify, and distribute this software and its
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# documentation for any purpose and without fee is hereby granted, provided
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# that the above copyright notice appear in all copies and that both that
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# copyright notice and this permission notice appear in supporting
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# documentation, and that the name of M.I.T. not be used in advertising or
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# publicity pertaining to distribution of the software without specific,
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# written prior permission. M.I.T. makes no representations about the
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# suitability of this software for any purpose. It is provided "as is"
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# without express or implied warranty.
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#
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#***************************************************************************
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# File version for 'aclocal' use. Keep it a single number.
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# serial 3
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dnl CARES_CHECK_OPTION_DEBUG
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dnl -------------------------------------------------
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dnl Verify if configure has been invoked with option
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dnl --enable-debug or --disable-debug, and set shell
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dnl variable want_debug value as appropriate.
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AC_DEFUN([CARES_CHECK_OPTION_DEBUG], [
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AC_BEFORE([$0],[CARES_CHECK_OPTION_WARNINGS])dnl
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AC_BEFORE([$0],[CARES_CHECK_PROG_CC])dnl
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AC_MSG_CHECKING([whether to enable debug build options])
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OPT_DEBUG_BUILD="default"
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AC_ARG_ENABLE(debug,
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AC_HELP_STRING([--enable-debug],[Enable debug build options])
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AC_HELP_STRING([--disable-debug],[Disable debug build options]),
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OPT_DEBUG_BUILD=$enableval)
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case "$OPT_DEBUG_BUILD" in
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no)
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dnl --disable-debug option used
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want_debug="no"
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;;
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default)
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dnl configure option not specified
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want_debug="no"
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;;
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*)
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dnl --enable-debug option used
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want_debug="yes"
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;;
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esac
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AC_MSG_RESULT([$want_debug])
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])
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dnl CARES_CHECK_OPTION_NONBLOCKING
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dnl -------------------------------------------------
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dnl Verify if configure has been invoked with option
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dnl --enable-nonblocking or --disable-nonblocking, and
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dnl set shell variable want_nonblocking as appropriate.
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AC_DEFUN([CARES_CHECK_OPTION_NONBLOCKING], [
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AC_BEFORE([$0],[CARES_CHECK_NONBLOCKING_SOCKET])dnl
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AC_MSG_CHECKING([whether to enable non-blocking communications])
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OPT_NONBLOCKING="default"
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AC_ARG_ENABLE(nonblocking,
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AC_HELP_STRING([--enable-nonblocking],[Enable non-blocking communications])
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AC_HELP_STRING([--disable-nonblocking],[Disable non-blocking communications]),
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OPT_NONBLOCKING=$enableval)
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case "$OPT_NONBLOCKING" in
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no)
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dnl --disable-nonblocking option used
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want_nonblocking="no"
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;;
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default)
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dnl configure option not specified
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want_nonblocking="yes"
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;;
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*)
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dnl --enable-nonblocking option used
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want_nonblocking="yes"
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;;
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esac
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AC_MSG_RESULT([$want_nonblocking])
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])
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dnl CARES_CHECK_OPTION_OPTIMIZE
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dnl -------------------------------------------------
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dnl Verify if configure has been invoked with option
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dnl --enable-optimize or --disable-optimize, and set
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dnl shell variable want_optimize value as appropriate.
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AC_DEFUN([CARES_CHECK_OPTION_OPTIMIZE], [
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AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl
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AC_BEFORE([$0],[CARES_CHECK_PROG_CC])dnl
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AC_MSG_CHECKING([whether to enable compiler optimizer])
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OPT_COMPILER_OPTIMIZE="default"
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AC_ARG_ENABLE(optimize,
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AC_HELP_STRING([--enable-optimize(=OPT)],[Enable compiler optimizations (default=-O2)])
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AC_HELP_STRING([--disable-optimize],[Disable compiler optimizations]),
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OPT_COMPILER_OPTIMIZE=$enableval)
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case "$OPT_COMPILER_OPTIMIZE" in
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no)
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dnl --disable-optimize option used. We will handle this as
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dnl a request to disable compiler optimizations if possible.
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dnl If the compiler is known CFLAGS and CPPFLAGS will be
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dnl overridden, otherwise this can not be honored.
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want_optimize="no"
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AC_MSG_RESULT([no])
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;;
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default)
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dnl configure's optimize option not specified. Initially we will
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dnl handle this as a a request contrary to configure's setting
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dnl for --enable-debug. IOW, initially, for debug-enabled builds
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dnl this will be handled as a request to disable optimizations if
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dnl possible, and for debug-disabled builds this will be handled
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dnl initially as a request to enable optimizations if possible.
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dnl Finally, if the compiler is known and CFLAGS and CPPFLAGS do
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dnl not have any optimizer flag the request will be honored, in
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dnl any other case the request can not be honored.
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dnl IOW, existing optimizer flags defined in CFLAGS or CPPFLAGS
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dnl will always take precedence over any initial assumption.
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if test "$want_debug" = "yes"; then
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want_optimize="assume_no"
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AC_MSG_RESULT([not specified (assuming no)])
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else
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want_optimize="assume_yes"
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AC_MSG_RESULT([not specified (assuming yes)])
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fi
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;;
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*)
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dnl --enable-optimize option used. We will handle this as
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dnl a request to enable compiler optimizations if possible.
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dnl If the compiler is known CFLAGS and CPPFLAGS will be
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dnl overridden, otherwise this can not be honored.
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want_optimize="yes"
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AC_MSG_RESULT([yes])
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;;
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esac
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])
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dnl CARES_CHECK_OPTION_WARNINGS
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dnl -------------------------------------------------
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dnl Verify if configure has been invoked with option
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dnl --enable-warnings or --disable-warnings, and set
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dnl shell variable want_warnings as appropriate.
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AC_DEFUN([CARES_CHECK_OPTION_WARNINGS], [
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AC_REQUIRE([CARES_CHECK_OPTION_DEBUG])dnl
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AC_BEFORE([$0],[CARES_CHECK_PROG_CC])dnl
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AC_MSG_CHECKING([whether to enable strict compiler warnings])
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OPT_COMPILER_WARNINGS="default"
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AC_ARG_ENABLE(warnings,
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AC_HELP_STRING([--enable-warnings],[Enable strict compiler warnings])
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AC_HELP_STRING([--disable-warnings],[Disable strict compiler warnings]),
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OPT_COMPILER_WARNINGS=$enableval)
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case "$OPT_COMPILER_WARNINGS" in
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no)
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dnl --disable-warnings option used
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want_warnings="no"
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;;
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default)
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dnl configure option not specified, so
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dnl use same setting as --enable-debug
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want_warnings="$want_debug"
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;;
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*)
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dnl --enable-warnings option used
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want_warnings="yes"
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;;
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esac
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AC_MSG_RESULT([$want_warnings])
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])
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dnl CARES_CHECK_NONBLOCKING_SOCKET
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dnl -------------------------------------------------
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dnl Check for how to set a socket into non-blocking state.
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AC_DEFUN([CARES_CHECK_NONBLOCKING_SOCKET], [
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AC_REQUIRE([CARES_CHECK_OPTION_NONBLOCKING])dnl
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AC_REQUIRE([CARES_CHECK_FUNC_FCNTL])dnl
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AC_REQUIRE([CARES_CHECK_FUNC_IOCTL])dnl
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AC_REQUIRE([CARES_CHECK_FUNC_IOCTLSOCKET])dnl
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AC_REQUIRE([CARES_CHECK_FUNC_IOCTLSOCKET_CAMEL])dnl
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AC_REQUIRE([CARES_CHECK_FUNC_SETSOCKOPT])dnl
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#
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tst_method="unknown"
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if test "$want_nonblocking" = "yes"; then
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AC_MSG_CHECKING([how to set a socket into non-blocking mode])
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if test "x$ac_cv_func_fcntl_o_nonblock" = "xyes"; then
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tst_method="fcntl O_NONBLOCK"
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elif test "x$ac_cv_func_ioctl_fionbio" = "xyes"; then
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tst_method="ioctl FIONBIO"
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elif test "x$ac_cv_func_ioctlsocket_fionbio" = "xyes"; then
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tst_method="ioctlsocket FIONBIO"
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elif test "x$ac_cv_func_ioctlsocket_camel_fionbio" = "xyes"; then
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tst_method="IoctlSocket FIONBIO"
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elif test "x$ac_cv_func_setsockopt_so_nonblock" = "xyes"; then
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tst_method="setsockopt SO_NONBLOCK"
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fi
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AC_MSG_RESULT([$tst_method])
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if test "$tst_method" = "unknown"; then
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AC_MSG_WARN([cannot determine non-blocking socket method.])
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fi
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fi
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if test "$tst_method" = "unknown"; then
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AC_DEFINE_UNQUOTED(USE_BLOCKING_SOCKETS, 1,
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[Define to disable non-blocking sockets.])
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AC_MSG_WARN([non-blocking sockets disabled.])
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fi
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])
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