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320 lines
12 KiB
320 lines
12 KiB
#*************************************************************************** |
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# $Id$ |
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# |
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# Copyright (C) 2008 - 2009 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 7 |
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dnl CARES_CHECK_OPTION_CURLDEBUG |
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dnl ------------------------------------------------- |
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dnl Verify if configure has been invoked with option |
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dnl --enable-curldebug or --disable-curldebug, and set |
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dnl shell variable want_curldebug value as appropriate. |
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AC_DEFUN([CARES_CHECK_OPTION_CURLDEBUG], [ |
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AC_BEFORE([$0],[CARES_CHECK_CURLDEBUG])dnl |
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AC_MSG_CHECKING([whether to enable curl debug memory tracking]) |
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OPT_CURLDEBUG_BUILD="default" |
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AC_ARG_ENABLE(curldebug, |
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AC_HELP_STRING([--enable-curldebug],[Enable curl debug memory tracking]) |
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AC_HELP_STRING([--disable-curldebug],[Disable curl debug memory tracking]), |
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OPT_CURLDEBUG_BUILD=$enableval) |
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case "$OPT_CURLDEBUG_BUILD" in |
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no) |
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dnl --disable-curldebug option used |
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want_curldebug="no" |
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;; |
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default) |
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dnl configure option not specified |
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want_curldebug="no" |
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;; |
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*) |
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dnl --enable-curldebug option used. |
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dnl The use of this option value is a request to enable curl's |
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dnl debug memory tracking for the c-ares library. This is a big |
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dnl hack that can only be done when a whole bunch of requisites |
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dnl are simultaneously satisfied. Later on, these requisites are |
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dnl verified and if they are not fully satisfied the option will |
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dnl be ignored and act as if --disable-curldebug had been given |
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dnl setting shell variable want_curldebug to 'no'. |
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want_curldebug="yes" |
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;; |
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esac |
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AC_MSG_RESULT([$want_curldebug]) |
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]) |
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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_OPTION_CURLDEBUG])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_HIDDEN_SYMBOLS |
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dnl ------------------------------------------------- |
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dnl Verify if configure has been invoked with option |
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dnl --enable-hidden-symbols or --disable-hidden-symbols, |
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dnl setting shell variable want_hidden_symbols value. |
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AC_DEFUN([CARES_CHECK_OPTION_HIDDEN_SYMBOLS], [ |
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AC_BEFORE([$0],[CARES_CHECK_COMPILER_HIDDEN_SYMBOLS])dnl |
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AC_MSG_CHECKING([whether to enable hiding symbols]) |
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OPT_HIDDEN_SYMBOLS="default" |
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AC_ARG_ENABLE(hidden-symbols, |
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AC_HELP_STRING([--enable-hidden-symbols],[Enable hiding of library internal symbols]) |
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AC_HELP_STRING([--disable-hidden-symbols],[Disable hiding of library internal symbols]), |
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OPT_HIDDEN_SYMBOLS=$enableval) |
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case "$OPT_HIDDEN_SYMBOLS" in |
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no) |
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dnl --disable-hidden-symbols option used. |
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dnl This is an indication to not attempt hiding of library internal |
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dnl symbols. Default symbol visibility will be used, which normally |
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dnl exposes all library internal symbols. |
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want_hidden_symbols="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 hidden-symbols option not specified. |
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dnl Handle this as if --enable-hidden-symbols option was given. |
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want_hidden_symbols="yes" |
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AC_MSG_RESULT([not specified (assuming yes)]) |
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;; |
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*) |
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dnl --enable-hidden-symbols option used. |
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dnl This is an indication to attempt hiding of library internal |
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dnl symbols. This is only supported on some compilers/linkers. |
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want_hidden_symbols="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_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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dnl CARES_CONFIGURE_HIDDEN_SYMBOLS |
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dnl ------------------------------------------------- |
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dnl Depending on --enable-hidden-symbols or --disable-hidden-symbols |
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dnl configure option, and compiler capability to actually honor such |
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dnl option, compiler flags will be modified as appropriate. |
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dnl This macro should not be used until all compilation tests have |
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dnl been done to prevent interferences on other tests. |
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AC_DEFUN([CARES_CONFIGURE_HIDDEN_SYMBOLS], [ |
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AC_MSG_CHECKING([whether to actually hide library internal symbols]) |
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if test x"$ac_cv_native_windows" != "xyes" && |
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test "$want_hidden_symbols" = "yes" && |
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test "$hidden_symbols_supported" = "yes"; then |
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tmp_save_CFLAGS="$CFLAGS" |
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CFLAGS="$tmp_save_CFLAGS $hidden_symbols_CFLAGS" |
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AC_DEFINE_UNQUOTED(CARES_HIDDEN_SYMBOLS, 1, |
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[Define to 1 to enable hiding of library internal symbols.]) |
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AC_DEFINE_UNQUOTED(CARES_EXTERN_SYMBOL, $hidden_symbols_extern, |
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[Definition to make a library symbol externally visible.]) |
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AC_MSG_RESULT([yes]) |
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else |
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AC_MSG_RESULT([no]) |
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fi |
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]) |
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