# This file is part of Autoconf. -*- Autoconf -*- # Macros that test for specific features. # Copyright 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001 # Free Software Foundation, Inc. # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA # 02111-1307, USA. # # As a special exception, the Free Software Foundation gives unlimited # permission to copy, distribute and modify the configure scripts that # are the output of Autoconf. You need not follow the terms of the GNU # General Public License when using or distributing such scripts, even # though portions of the text of Autoconf appear in them. The GNU # General Public License (GPL) does govern all other use of the material # that constitutes the Autoconf program. # # Certain portions of the Autoconf source text are designed to be copied # (in certain cases, depending on the input) into the output of # Autoconf. We call these the "data" portions. The rest of the Autoconf # source text consists of comments plus executable code that decides which # of the data portions to output in any given case. We call these # comments and executable code the "non-data" portions. Autoconf never # copies any of the non-data portions into its output. # # This special exception to the GPL applies to versions of Autoconf # released by the Free Software Foundation. When you make and # distribute a modified version of Autoconf, you may extend this special # exception to the GPL to apply to your modified version as well, *unless* # your modified version has the potential to copy into its output some # of the text that was the non-data portion of the version that you started # with. (In other words, unless your change moves or copies text from # the non-data portions to the data portions.) If your modification has # such potential, you must delete any notice of this special exception # to the GPL from your modified version. # # Written by David MacKenzie, with help from # Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor, # Roland McGrath, Noah Friedman, david d zuhn, and many others. ## --------------------- ## ## Checks for programs. ## ## --------------------- ## # _AC_PROG_ECHO # ------------- # Check whether to use -n, \c, or newline-tab to separate # checking messages from result messages. # Don't try to cache, since the results of this macro are needed to # display the checking message. In addition, caching something used once # has little interest. # Idea borrowed from dist 3.0. 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AC_DEFUN([AC_PATH_X], [dnl Document the X abnormal options inherited from history. m4_divert_once([HELP_BEGIN], [ X features: --x-includes=DIR X include files are in DIR --x-libraries=DIR X library files are in DIR])dnl AC_MSG_CHECKING([for X]) AC_ARG_WITH(x, [ --with-x use the X Window System]) # $have_x is `yes', `no', `disabled', or empty when we do not yet know. if test "x$with_x" = xno; then # The user explicitly disabled X. have_x=disabled else if test "x$x_includes" != xNONE && test "x$x_libraries" != xNONE; then # Both variables are already set. have_x=yes else _AC_PATH_X fi eval "$ac_cv_have_x" fi # $with_x != no if test "$have_x" != yes; then AC_MSG_RESULT([$have_x]) no_x=yes else # If each of the values was on the command line, it overrides each guess. test "x$x_includes" = xNONE && x_includes=$ac_x_includes test "x$x_libraries" = xNONE && x_libraries=$ac_x_libraries # Update the cache value to reflect the command line values. ac_cv_have_x="have_x=yes \ ac_x_includes=$x_includes ac_x_libraries=$x_libraries" AC_MSG_RESULT([libraries $x_libraries, headers $x_includes]) fi ])# AC_PATH_X # AC_PATH_XTRA # ------------ # Find additional X libraries, magic flags, etc. AC_DEFUN([AC_PATH_XTRA], [AC_REQUIRE([AC_PATH_X])dnl if test "$no_x" = yes; then # Not all programs may use this symbol, but it does not hurt to define it. AC_DEFINE([X_DISPLAY_MISSING], 1, [Define if the X Window System is missing or not being used.]) X_CFLAGS= X_PRE_LIBS= X_LIBS= X_EXTRA_LIBS= else if test -n "$x_includes"; then X_CFLAGS="$X_CFLAGS -I$x_includes" fi # It would also be nice to do this for all -L options, not just this one. if test -n "$x_libraries"; then X_LIBS="$X_LIBS -L$x_libraries" dnl FIXME: banish uname from this macro! # For Solaris; some versions of Sun CC require a space after -R and # others require no space. Words are not sufficient . . . . case `(uname -sr) 2>/dev/null` in "SunOS 5"*) AC_MSG_CHECKING([whether -R must be followed by a space]) ac_xsave_LIBS=$LIBS; LIBS="$LIBS -R$x_libraries" AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_nospace=yes, ac_R_nospace=no) if test $ac_R_nospace = yes; then AC_MSG_RESULT([no]) X_LIBS="$X_LIBS -R$x_libraries" else LIBS="$ac_xsave_LIBS -R $x_libraries" AC_LINK_IFELSE([AC_LANG_PROGRAM()], ac_R_space=yes, ac_R_space=no) if test $ac_R_space = yes; then AC_MSG_RESULT([yes]) X_LIBS="$X_LIBS -R $x_libraries" else AC_MSG_RESULT([neither works]) fi fi LIBS=$ac_xsave_LIBS esac fi # Check for system-dependent libraries X programs must link with. # Do this before checking for the system-independent R6 libraries # (-lICE), since we may need -lsocket or whatever for X linking. if test "$ISC" = yes; then X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl_s -linet" else # Martyn Johnson says this is needed for Ultrix, if the X # libraries were built with DECnet support. And Karl Berry says # the Alpha needs dnet_stub (dnet does not exist). ac_xsave_LIBS="$LIBS"; LIBS="$LIBS $X_LIBS -lX11" AC_TRY_LINK_FUNC(XOpenDisplay, , [AC_CHECK_LIB(dnet, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet"]) if test $ac_cv_lib_dnet_dnet_ntoa = no; then AC_CHECK_LIB(dnet_stub, dnet_ntoa, [X_EXTRA_LIBS="$X_EXTRA_LIBS -ldnet_stub"]) fi]) LIBS="$ac_xsave_LIBS" # msh@cis.ufl.edu says -lnsl (and -lsocket) are needed for his 386/AT, # to get the SysV transport functions. # Chad R. Larson says the Pyramis MIS-ES running DC/OSx (SVR4) # needs -lnsl. # The nsl library prevents programs from opening the X display # on Irix 5.2, according to T.E. Dickey. # The functions gethostbyname, getservbyname, and inet_addr are # in -lbsd on LynxOS 3.0.1/i386, according to Lars Hecking. AC_CHECK_FUNC(gethostbyname) if test $ac_cv_func_gethostbyname = no; then AC_CHECK_LIB(nsl, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lnsl") if test $ac_cv_lib_nsl_gethostbyname = no; then AC_CHECK_LIB(bsd, gethostbyname, X_EXTRA_LIBS="$X_EXTRA_LIBS -lbsd") fi fi # lieder@skyler.mavd.honeywell.com says without -lsocket, # socket/setsockopt and other routines are undefined under SCO ODT # 2.0. But -lsocket is broken on IRIX 5.2 (and is not necessary # on later versions), says Simon Leinen: it contains gethostby* # variants that don't use the nameserver (or something). -lsocket # must be given before -lnsl if both are needed. We assume that # if connect needs -lnsl, so does gethostbyname. AC_CHECK_FUNC(connect) if test $ac_cv_func_connect = no; then AC_CHECK_LIB(socket, connect, X_EXTRA_LIBS="-lsocket $X_EXTRA_LIBS", , $X_EXTRA_LIBS) fi # Guillermo Gomez says -lposix is necessary on A/UX. AC_CHECK_FUNC(remove) if test $ac_cv_func_remove = no; then AC_CHECK_LIB(posix, remove, X_EXTRA_LIBS="$X_EXTRA_LIBS -lposix") fi # BSDI BSD/OS 2.1 needs -lipc for XOpenDisplay. AC_CHECK_FUNC(shmat) if test $ac_cv_func_shmat = no; then AC_CHECK_LIB(ipc, shmat, X_EXTRA_LIBS="$X_EXTRA_LIBS -lipc") fi fi # Check for libraries that X11R6 Xt/Xaw programs need. ac_save_LDFLAGS=$LDFLAGS test -n "$x_libraries" && LDFLAGS="$LDFLAGS -L$x_libraries" # SM needs ICE to (dynamically) link under SunOS 4.x (so we have to # check for ICE first), but we must link in the order -lSM -lICE or # we get undefined symbols. So assume we have SM if we have ICE. # These have to be linked with before -lX11, unlike the other # libraries we check for below, so use a different variable. # John Interrante, Karl Berry AC_CHECK_LIB(ICE, IceConnectionNumber, [X_PRE_LIBS="$X_PRE_LIBS -lSM -lICE"], , $X_EXTRA_LIBS) LDFLAGS=$ac_save_LDFLAGS fi AC_SUBST(X_CFLAGS)dnl AC_SUBST(X_PRE_LIBS)dnl AC_SUBST(X_LIBS)dnl AC_SUBST(X_EXTRA_LIBS)dnl ])# AC_PATH_XTRA ## ------------------------------------ ## ## Checks for not-quite-Unix variants. ## ## ------------------------------------ ## # AC_CYGWIN # --------- # Check for Cygwin. This is a way to set the right value for # EXEEXT. AU_DEFUN([AC_CYGWIN], [AC_REQUIRE([AC_CANONICAL_HOST])[]dnl AC_DIAGNOSE([obsolete], [$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl case $host_os in *cygwin* ) CYGWIN=yes;; * ) CYGWIN=no;; esac ])# AC_CYGWIN # AC_EMXOS2 # --------- # Check for EMX on OS/2. This is another way to set the right value # for EXEEXT. AU_DEFUN([AC_EMXOS2], [AC_REQUIRE([AC_CANONICAL_HOST])[]dnl AC_DIAGNOSE([obsolete], [$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl case $host_os in *emx* ) EMXOS2=yes;; * ) EMXOS2=no;; esac ])# AC_EMXOS2 # AC_MINGW32 # ---------- # Check for mingw32. This is another way to set the right value for # EXEEXT. AU_DEFUN([AC_MINGW32], [AC_REQUIRE([AC_CANONICAL_HOST])[]dnl AC_DIAGNOSE([obsolete], [$0 is obsolete: use AC_CANONICAL_HOST and $host_os])dnl case $host_os in *mingw32* ) MINGW32=yes;; * ) MINGW32=no;; esac ])# AC_MINGW32 ## -------------------------- ## ## Checks for UNIX variants. ## ## -------------------------- ## # These are kludges which should be replaced by a single POSIX check. # They aren't cached, to discourage their use. # AC_AIX # ------ AC_DEFUN([AC_AIX], [AH_VERBATIM([_ALL_SOURCE], [/* Define if on AIX 3. System headers sometimes define this. We just want to avoid a redefinition error message. */ @%:@ifndef _ALL_SOURCE @%:@ undef _ALL_SOURCE @%:@endif])dnl AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl AC_BEFORE([$0], [AC_RUN_IFELSE])dnl AC_MSG_CHECKING([for AIX]) AC_EGREP_CPP(yes, [#ifdef _AIX yes #endif ], [AC_MSG_RESULT([yes]) AC_DEFINE(_ALL_SOURCE)], [AC_MSG_RESULT([no])]) ])# AC_AIX # AC_MINIX # -------- AC_DEFUN([AC_MINIX], [AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl AC_BEFORE([$0], [AC_RUN_IFELSE])dnl AC_CHECK_HEADER(minix/config.h, MINIX=yes, MINIX=) if test "$MINIX" = yes; then AC_DEFINE(_POSIX_SOURCE, 1, [Define if you need to in order for `stat' and other things to work.]) AC_DEFINE(_POSIX_1_SOURCE, 2, [Define if the system does not provide POSIX.1 features except with this defined.]) AC_DEFINE(_MINIX, 1, [Define if on MINIX.]) fi ])# AC_MINIX # AC_ISC_POSIX # ------------ AC_DEFUN([AC_ISC_POSIX], [AC_REQUIRE([AC_PROG_CC])dnl AC_BEFORE([$0], [AC_COMPILE_IFELSE])dnl AC_BEFORE([$0], [AC_RUN_IFELSE])dnl AC_MSG_CHECKING([for POSIXized ISC]) if test -d /etc/conf/kconfig.d && grep _POSIX_VERSION [/usr/include/sys/unistd.h] >/dev/null 2>&1 then AC_MSG_RESULT([yes]) ISC=yes # If later tests want to check for ISC. AC_DEFINE(_POSIX_SOURCE, 1, [Define if you need to in order for stat and other things to work.]) if test "$GCC" = yes; then CC="$CC -posix" else CC="$CC -Xp" fi else AC_MSG_RESULT([no]) ISC= fi ])# AC_ISC_POSIX # AC_XENIX_DIR # ------------ AU_DEFUN(AC_XENIX_DIR, [# You shouldn't need to depend upon XENIX. Remove this test if useless. AC_MSG_CHECKING([for Xenix]) AC_EGREP_CPP(yes, [#if defined(M_XENIX) && !defined(M_UNIX) yes @%:@endif], [AC_MSG_RESULT([yes]); XENIX=yes], [AC_MSG_RESULT([no]); XENIX=]) AC_HEADER_DIRENT[]dnl ]) # AC_DYNIX_SEQ # ------------ AU_DEFUN([AC_DYNIX_SEQ], [AC_FUNC_GETMNTENT]) # AC_IRIX_SUN # ----------- AU_DEFUN([AC_IRIX_SUN], [AC_FUNC_GETMNTENT AC_CHECK_LIB(sun, getpwnam)]) # AC_SCO_INTL # ----------- AU_DEFUN([AC_SCO_INTL], [AC_FUNC_STRFTIME])