chiark - git - mdw - disorder/blob - configure.ac

   1 # Process this file with autoconf to produce a configure script.
   2 #
   3 # This file is part of DisOrder.
   4 # Copyright (C) 2004-2008 Richard Kettlewell
   5 # Portions copyright (C) 2007 Ross Younger
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 2 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 # General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20 # USA
  21 #
  22
  23 AC_INIT([disorder], [3.0+], [richard+disorder@sfere.greenend.org.uk])
  24 AC_CONFIG_AUX_DIR([config.aux])
  25 AM_INIT_AUTOMAKE(disorder, [3.0+])
  26 AC_CONFIG_SRCDIR([server/disorderd.c])
  27 AM_CONFIG_HEADER([config.h])
  28
  29 # Find host type
  30 AC_CANONICAL_HOST
  31
  32 # What we want to build
  33 want_gtk=yes
  34 want_python=yes
  35 want_tests=yes
  36
  37 # APIs we want
  38 want_alsa=yes
  39 want_oss=yes
  40 want_coreaudio=yes
  41
  42 # Checks for programs.
  43 AC_PROG_CC
  44 AC_SET_MAKE
  45 if test "x$GCC" = xyes; then
  46   gcc_werror=-Werror
  47 else
  48   AC_MSG_ERROR([GNU C is required to build this program])
  49   gcc_werror=""
  50 fi
  51
  52 AC_ARG_WITH([alsa],
  53             [AS_HELP_STRING([--without-alsa],
  54                             [do not build with ALSA support])],
  55             [want_alsa=$withval])
  56 AC_ARG_WITH([oss],
  57             [AS_HELP_STRING([--without-oss],
  58                             [do not build with OSS support])],
  59             [want_oss=$withval])
  60 AC_ARG_WITH([coreaudio],
  61             [AS_HELP_STRING([--without-coreaudio],
  62                             [do not build with Core Audio support])],
  63             [want_coreaudio=$withval])
  64 AC_ARG_WITH([tests],
  65             [AS_HELP_STRING([--without-tests],
  66                             [do not build test suit])],
  67             [want_tests=$withval])
  68
  69 AC_MSG_CHECKING([for a known target platform])
  70 case "$host" in
  71 *empeg* )
  72   AC_MSG_RESULT([empeg car stereo])
  73   AC_DEFINE([EMPEG_HOST],[1],[define if host is an empeg car stereo])
  74   # work around broken toolchain
  75   AC_CHECK_LIB([gpg-error], [gpg_strerror])
  76   AC_CHECK_LIB([pthread], [pthread_create])
  77   want_server=no
  78  ;;
  79 *linux* | *Linux* )
  80   AC_MSG_RESULT([Linux])
  81   want_server=yes
  82   ;;
  83 *-apple-darwin* )
  84   AC_MSG_RESULT([Mac OS X])
  85   want_server=yes
  86   if test $want_coreaudio = yes; then
  87     COREAUDIO="-framework CoreAudio"
  88   fi
  89   browser=open
  90   AC_MSG_CHECKING([Mac OS X target version])
  91   # We honor MACOSX_DEPLOYMENT_TARGET in the environment, emulating gcc's
  92   # behaviour.  But we provide a command line option to override it and
  93   # we default to wide support instead of supporting only the build platform.
  94   #
  95   # Currently if you ask for 10.5 you will get a deprecation warning
  96   # when building the CoreAudio support code.  For the time being the
  97   # answer to this is "don't do that then".  If a good reason to ask
  98   # for a 10.5 deployment target emerges then this will be fixed.
  99   if test -z "$MACOSX_DEPLOYMENT_TARGET"; then
 100     MACOSX_DEPLOYMENT_TARGET=10.0
 101   fi
 102   AC_ARG_WITH([deployment-target],
 103               [AS_HELP_STRING([--with-deployment-target=TARGET],
 104                               [set target OS X version])],
 105               [MACOSX_DEPLOYMENT_TARGET=$withval])
 106   # Convert to desired format
 107   underscored=`echo $MACOSX_DEPLOYMENT_TARGET|sed 's/\./_/'`
 108   minver="MAC_OS_X_VERSION_$underscored"
 109   AC_MSG_RESULT([$minver])
 110   AC_DEFINE_UNQUOTED([MAC_OS_X_VERSION_MIN_REQUIRED], [$minver],
 111                      [define to minimum version of Mac OS X to support])
 112   ;;
 113 *-freebsd* )
 114   AC_MSG_RESULT([FreeBSD])
 115   want_server=yes
 116   # Ports install to /usr/local but the compiler stupidly doesn't look
 117   # there by default
 118   LDFLAGS="${LDFLAGS} -L/usr/local/lib"
 119   CPPFLAGS="${CPPFLAGS} -isystem /usr/local/include"
 120   # Look for a suitable version of libdb among the versions found in FreeBSD 7.0
 121   AC_CACHE_CHECK([looking for a libdb install],[rjk_cv_libdb],[
 122     rjk_cv_libdb="none"
 123     for db in db43 db44 db45 db46; do
 124       if test -e /usr/local/lib/$db; then
 125         rjk_cv_libdb=$db
 126         break
 127       fi
 128     done
 129   ])
 130   if test $rjk_cv_libdb != none; then
 131     LDFLAGS="${LDFLAGS} -L/usr/local/lib/$rjk_cv_libdb"
 132     CPPFLAGS="${CPPFLAGS} -isystem /usr/local/include/$rjk_cv_libdb"
 133   fi
 134   ;;
 135 * )
 136   AC_MSG_RESULT([unknown, winging it])
 137   want_server=no
 138   ;;
 139 esac
 140 AC_SUBST([COREAUDIO])
 141
 142 AC_ARG_WITH([browser],
 143             [AS_HELP_STRING([--with-browser=BROWSER],
 144                             [use BROWSER to display HTML])],
 145             [browser=$withval])
 146
 147 AC_CACHE_CHECK([default HTML viewer],[rjk_cv_browser],[
 148   rjk_cv_browser=UNKNOWN
 149   for candidate in x-www-browser sensible-browser firefox mozilla konqueror netscape; do
 150     if type $candidate >/dev/null 2>&1; then
 151       rjk_cv_browser="$candidate"
 152       break
 153     fi
 154   done
 155 ])
 156 if test -z "$browser"; then
 157   browser="$rjk_cv_browser"
 158 fi
 159 AC_DEFINE_UNQUOTED([BROWSER],["$browser"],[HTML viewer])
 160
 161 AC_ARG_WITH([server],
 162             [AS_HELP_STRING([--without-server],
 163                             [do not build server])],
 164             [want_server=$withval])
 165 AC_ARG_WITH([gtk],
 166             [AS_HELP_STRING([--without-gtk],
 167                             [do not build GTK+ client])],
 168             [want_gtk=$withval])
 169 AC_ARG_WITH([python],
 170             [AS_HELP_STRING([--without-python],
 171                             [do not build Python support])],
 172             [want_python=$withval])
 173
 174 subdirs="scripts lib"
 175 if test $want_tests = yes; then
 176   subdirs="${subdirs} libtests"
 177 fi
 178 subdirs="${subdirs} clients doc examples debian"
 179
 180 if test $want_server = yes; then
 181   subdirs="${subdirs} server cgi plugins driver templates sounds images"
 182 fi
 183 if test $want_gtk = yes; then
 184   subdirs="${subdirs} disobedience"
 185   if test $want_server = no; then
 186     subdirs="${subdirs} images"
 187   fi
 188 fi
 189 if test $want_tests = yes && test $want_python = yes; then
 190   AM_PATH_PYTHON([2.4])
 191   subdirs="${subdirs} python tests"
 192 fi
 193 AC_SUBST([subdirs])
 194
 195 # libtool config
 196 AC_LIBTOOL_DLOPEN
 197 AC_DISABLE_STATIC
 198
 199 AC_PROG_LIBTOOL
 200
 201 AC_CACHE_CHECK([for GNU sed],[rjk_cv_gnused],[
 202   rjk_cv_gnused="not found"
 203   for candidate in sed gsed; do
 204     if $candidate --version >/dev/null 2>&1; then
 205       rjk_cv_gnused=$candidate
 206     fi
 207   done
 208 ])
 209 GNUSED="${GNUSED:-$rjk_cv_gnused}"
 210 if test "$GNUSED" = "not found"; then
 211   AC_MSG_ERROR([GNU sed is required to build this program])
 212 fi
 213 AC_SUBST([GNUSED])
 214
 215 AC_CHECK_PROGS([GROG],[grog])
 216 AM_CONDITIONAL([GROG],[test "x$GROG" != xnone])
 217
 218 missing_libraries=""
 219 missing_headers=""
 220 missing_functions=""
 221
 222 AC_DEFINE(_GNU_SOURCE, 1, [required for e.g. strsignal])
 223
 224 AC_PATH_PROG([SENDMAIL],[sendmail],[none],[$PATH:/usr/sbin:/usr/lib])
 225
 226 # Macs might have libraries under fink's root
 227 AC_PATH_PROG([FINK],[fink],[none],[$PATH:/sw/bin])
 228 if test "x$FINK" != xnone; then
 229   AC_CACHE_CHECK([fink install directory],[rjk_cv_finkprefix],[
 230     rjk_cv_finkprefix="`echo "$FINK" | sed 's,/bin/fink$,,'`"
 231   ])
 232   finkdir="${rjk_cv_finkprefix}"
 233   finkbindir="${rjk_cv_finkprefix}/bin"
 234   CPPFLAGS="${CPPFLAGS} -I${rjk_cv_finkprefix}/include/gc -I${rjk_cv_finkprefix}/include"
 235   if test $want_server = yes; then
 236     CPPFLAGS="${CPPFLAGS} -I${rjk_cv_finkprefix}/include/db4"
 237   fi
 238   LDFLAGS="${LDFLAGS} -L${rjk_cv_finkprefix}/lib"
 239 else
 240   finkbindir=""
 241 fi
 242 AC_SUBST([finkdir])
 243 AC_SUBST([finkbindir])
 244
 245 # Checks for libraries.
 246 # We save up a list of missing libraries that we can't do without
 247 # and report them all at once.
 248 AC_CHECK_LIB(gc, GC_malloc,            [AC_SUBST(LIBGC,[-lgc])],
 249             [missing_libraries="$missing_libraries libgc"])
 250 AC_CHECK_LIB(gcrypt, gcry_md_open,
 251              [AC_SUBST(LIBGCRYPT,[-lgcrypt])],
 252             [missing_libraries="$missing_libraries libgcrypt"])
 253 AC_CHECK_LIB(pcre, pcre_compile,
 254              [AC_SUBST(LIBPCRE,[-lpcre])],
 255              [missing_libraries="$missing_libraries libpcre"])
 256 if test $want_alsa = yes; then
 257   AC_CHECK_LIB([asound], [snd_pcm_open],
 258                [AC_SUBST(LIBASOUND,[-lasound])])
 259 fi
 260 if test $want_server = yes; then
 261   RJK_CHECK_LIB(db, db_create, [#include <db.h>],
 262                [AC_SUBST(LIBDB,[-ldb])],
 263                [missing_libraries="$missing_libraries libdb"])
 264   AC_CHECK_LIB(vorbis, vorbis_info_clear,
 265                [:],
 266                [missing_libraries="$missing_libraries libvorbis"])
 267   AC_CHECK_LIB(vorbisfile, ov_open,
 268                [AC_SUBST(LIBVORBISFILE,["-lvorbisfile -lvorbis"])],
 269                [missing_libraries="$missing_libraries libvorbisfile"],
 270                [-lvorbis])
 271   AC_CHECK_LIB(mad, mad_stream_init,
 272                [AC_SUBST(LIBMAD,[-lmad])],
 273                [missing_libraries="$missing_libraries libmad"])
 274   AC_CHECK_LIB([ao], [ao_initialize],
 275                [AC_SUBST(LIBAO,[-lao])],
 276                [missing_libraries="$missing_libraries libao"])
 277   AC_CHECK_LIB([FLAC], [FLAC__stream_decoder_new],
 278                [AC_SUBST(LIBFLAC,[-lFLAC])],
 279                [missing_libraries="$missing_libraries libFLAC"])
 280 fi
 281 AC_CHECK_LIB([pthread], [pthread_create],
 282              [AC_SUBST(LIBPTHREAD,[-lpthread])],
 283              [missing_libraries="$missing_libraries libpthread"])
 284
 285 if test $want_gtk = yes; then
 286   AM_PATH_GLIB_2_0([],[],[missing_libraries="$missing_libraries libglib"])
 287   AM_PATH_GTK_2_0([],[],[missing_libraries="$missing_libraries libgtk"])
 288 fi
 289
 290 # Some platforms have iconv already
 291 AC_CHECK_FUNC(iconv_open, [:],
 292               [RJK_CHECK_LIB(iconv, iconv_open, [#include <iconv.h>],
 293                             [AC_SUBST(LIBICONV,[-liconv])],
 294                             [missing_functions="$missing_functions iconv_open"])])
 295 AC_CHECK_FUNC([gethostbyname],[:],[
 296   AC_CHECK_LIB(nsl,gethostbyname,
 297                [AC_SUBST(LIBNSL,[-lnsl])],
 298                [missing_functions="$missing_functions gethostbyname"])])
 299 AC_CHECK_FUNC([socket],[:],[
 300   AC_CHECK_LIB(socket,socket,
 301                [AC_SUBST(LIBSOCKET,[-lsocket])],
 302                [missing_functions="$missing_functions socket"])])
 303 AC_CHECK_FUNC([dlopen],[:],[
 304   AC_CHECK_LIB(dl,dlopen,
 305                [AC_SUBST(LIBDL,[-ldl])],
 306                [missing_functions="$missing_functions dlopen"])])
 307
 308 if test ! -z "$missing_libraries"; then
 309   AC_MSG_ERROR([missing libraries:$missing_libraries])
 310 fi
 311
 312 # Checks for header files.
 313 RJK_FIND_GC_H
 314 if test $want_oss = yes; then
 315   AC_CHECK_HEADERS([sys/soundcard.h])
 316 fi
 317 if test $want_alsa = yes; then
 318   AC_CHECK_HEADERS([alsa/asoundlib.h])
 319 fi
 320 if test $want_coreaudio = yes; then
 321   AC_CHECK_HEADERS([CoreAudio/AudioHardware.h])
 322 fi
 323 AC_CHECK_HEADERS([inttypes.h])
 324 # We don't bother checking very standard stuff
 325 # Compilation will fail if any of these headers are missing, so we
 326 # check for them here and fail early.
 327 if test $want_server = yes; then
 328   AC_CHECK_HEADERS([db.h],[:],[
 329     missing_headers="$missing_headers $ac_header"
 330   ])
 331   AC_CHECK_HEADERS([FLAC/file_decoder.h])
 332 fi
 333 AC_CHECK_HEADERS([dlfcn.h gcrypt.h \
 334                  getopt.h iconv.h langinfo.h \
 335                  pcre.h sys/ioctl.h \
 336                  syslog.h unistd.h],[:],[
 337   missing_headers="$missing_headers $ac_header"
 338 ])
 339
 340 if test ! -z "$missing_headers"; then
 341   AC_MSG_ERROR([missing headers:$missing_headers])
 342 fi
 343
 344 # We require that libpcre support UTF-8
 345 RJK_REQUIRE_PCRE_UTF8([-lpcre])
 346
 347 # Checks for typedefs, structures, and compiler characteristics.
 348 AC_C_CONST
 349 AC_TYPE_SIZE_T
 350 AC_C_INLINE
 351 AC_C_BIGENDIAN
 352 AC_CHECK_TYPES([struct sockaddr_in6],,,[AC_INCLUDES_DEFAULT
 353 #include <netinet/in.h>])
 354
 355 # enable -Werror when we check for certain characteristics:
 356
 357 old_CFLAGS="${CFLAGS}"
 358 CFLAGS="${CFLAGS} $gcc_werror"
 359 AC_CHECK_TYPES([long long,uint32_t,uint8_t,intmax_t,uintmax_t])
 360
 361 # Some GCC invocations warn for converting function pointers to void *.
 362 # This is fair enough, as it's technically forbidden, but we use dlsym()
 363 # which can pretty much only exist if object and function pointers are
 364 # interconvertable.  So we disable -Werror if need be.
 365 if test ! -z "$gcc_werror"; then
 366   AC_CACHE_CHECK([whether function pointers can be converted to void * without a warning],
 367                  [rjk_cv_function_pointer_cast],[
 368     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 369   void somefunction(void);],
 370                       [(void *)somefunction])],
 371                       [rjk_cv_function_pointer_cast=yes],
 372                       [rjk_cv_function_pointer_cast=no])])
 373   if test $rjk_cv_function_pointer_cast = no; then
 374     gcc_werror=""
 375   fi
 376 fi
 377
 378 CFLAGS="${old_CFLAGS}"
 379
 380 # gcrypt maintainers keep changing everything.  Design your interface
 381 # first, then implement it once, rather than getting it wrong three or
 382 # four times and shipping between each attempt.
 383 AC_CACHE_CHECK([for hash handle type in <grypt.h>],
 384                [rjk_cv_gcrypt_hash_handle],[
 385   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 386 #include <gcrypt.h>
 387 ],
 388                [gcry_md_hd_t h;])],
 389                [rjk_cv_gcrypt_hash_handle=gcry_md_hd_t],[
 390     AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 391 #include <gcrypt.h>
 392 ],
 393                  [GcryMDHd h;])],
 394                  [rjk_cv_gcrypt_hash_handle=GcryMDHd],
 395                  [rjk_cv_gcrypt_hash_handle=GCRY_MD_HD])])])
 396 AC_DEFINE_UNQUOTED([gcrypt_hash_handle],[$rjk_cv_gcrypt_hash_handle],
 397                    [libgcrypt hash handle type])
 398
 399 AC_CACHE_CHECK([for gcry_error_t in <grypt.h>],
 400                [rjk_cv_have_gcry_error_t],[
 401   AC_COMPILE_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT
 402 #include <gcrypt.h>
 403 ],
 404                  [gcry_error_t e;])],
 405                  [rjk_cv_have_gcry_error_t=yes],
 406                  [rjk_cv_have_gcry_error_t=no])])
 407 if test $rjk_cv_have_gcry_error_t = yes; then
 408   AC_DEFINE([HAVE_GCRY_ERROR_T],1,[define if <gcrypt.h> defines gcry_error_t])
 409 fi
 410
 411 # Checks for functions
 412 if test $ac_cv_type_long_long = yes; then
 413   AC_CHECK_FUNCS([atoll strtoll],[:],[
 414     missing_functions="$missing_functions $ac_func"
 415   ])
 416   # Darwin sometimes fails to declare strtoll (e.g. if you ask for -std=c99)
 417   AC_CACHE_CHECK([whether strtoll is declared in <stdlib.h>],
 418                  [rjk_cv_strtoll_declared],[
 419     AC_EGREP_HEADER([strtoll], [stdlib.h],
 420                     [rjk_cv_strtoll_declared=yes],
 421                     [rjk_cv_strtoll_declared=no])])
 422   if test $rjk_cv_strtoll_declared = yes; then
 423     AC_DEFINE([DECLARES_STRTOLL],[1],[define if <stdlib.h> declares strtoll])
 424   fi
 425   AC_CACHE_CHECK([whether atoll is declared in <stdlib.h>],
 426                  [rjk_cv_atoll_declared],[
 427     AC_EGREP_HEADER([atoll], [stdlib.h],
 428                     [rjk_cv_atoll_declared=yes],
 429                     [rjk_cv_atoll_declared=no])])
 430   if test $rjk_cv_atoll_declared = yes; then
 431     AC_DEFINE([DECLARES_ATOLL],[1],[define if <stdlib.h> declares atoll])
 432   fi
 433 fi
 434 AC_CHECK_FUNCS([ioctl nl_langinfo strsignal setenv unsetenv],[:],[
 435   missing_functions="$missing_functions $ac_func"
 436 ])
 437 # fsync will do if fdatasync not available
 438 AC_CHECK_FUNCS([fdatasync],[:],[
 439   AC_CHECK_FUNCS([fsync],
 440                  [AC_DEFINE([fdatasync],[fsync],[define fdatasync to fsync if not available])],
 441                  [missing_functions="$missing_functions fdatasync"])])
 442 if test ! -z "$missing_functions"; then
 443   AC_MSG_ERROR([missing functions:$missing_functions])
 444 fi
 445
 446 # Functions we can take or leave
 447 AC_CHECK_FUNCS([fls])
 448
 449 if test $want_server = yes; then
 450   # <db.h> had better be version 3 or later
 451   AC_CACHE_CHECK([db.h version],[rjk_cv_db_version],[
 452     AC_PREPROC_IFELSE([
 453                        #include <db.h>
 454                        #ifndef DB_VERSION_MAJOR
 455                        # error cannot determine db version
 456                        #endif
 457                        #if DB_VERSION_MAJOR < 4
 458                        # error inadequate db version
 459                        #endif
 460                        #if DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR <= 2
 461                        # error inadequate db version
 462                        #endif
 463                       ],
 464                       [rjk_cv_db_version=ok],
 465                       [rjk_cv_db_version=inadequate])
 466   ])
 467   if test $rjk_cv_db_version != ok; then
 468     AC_MSG_ERROR([need db.h version at least 4.2])
 469   fi
 470 fi
 471
 472 AM_CONDITIONAL([SERVER], [test x$want_server = xyes])
 473 if test $want_gtk = yes; then
 474   AC_DEFINE([WITH_GTK], [1], [define if using GTK+])
 475 fi
 476
 477 if test "x$GCC" = xyes; then
 478   # We need LLONG_MAX and annoyingly GCC doesn't always give it to us
 479   # by default.
 480   AC_CACHE_CHECK([what C version to ask for],[rjk_cv_cstd],[
 481     AC_TRY_COMPILE([#include <limits.h>],[
 482       long long n = LLONG_MAX;
 483     ],[rjk_cv_cstd=default],[
 484       old_CC="$CC"
 485       CC="${CC} -std=gnu99"
 486       AC_TRY_COMPILE([#include <limits.h>],[
 487         long long n = LLONG_MAX;
 488       ],[rjk_cv_cstd=gnu99],[rjk_cv_cstd=unknown])
 489       CC="$old_CC"
 490     ])
 491   ])
 492   case $rjk_cv_cstd in
 493   default | unknown )
 494     ;;
 495   * )
 496     CC="${CC} -std=${rjk_cv_cstd}"
 497     ;;
 498   esac
 499
 500   # http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29478
 501   AC_CACHE_CHECK([checking for GCC bug 29478],[rjk_cv_pr29478],[
 502     old_CC="$CC"
 503     if test $GCC = yes; then
 504       CC="$CC -Wall -Werror"
 505     fi
 506     AC_COMPILE_IFELSE([
 507       static int x(char *f) {
 508        return *f;
 509       }
 510       int z(const char *g) {
 511         return x((char *)g);
 512       }],
 513       [rjk_cv_pr29478=no],
 514       [rjk_cv_pr29478=yes]
 515     )
 516     CC="$old_CC"
 517   ])
 518   if test $rjk_cv_pr29478 = yes; then
 519     gcc_werror=''
 520   fi
 521
 522   # a reasonable default set of warnings
 523   CC="${CC} -Wall -W -Wpointer-arith -Wbad-function-cast \
 524         -Wwrite-strings -Wmissing-prototypes \
 525         -Wmissing-declarations -Wnested-externs"
 526
 527   # Fix up GTK+ and GLib compiler flags
 528   GTK_CFLAGS="`echo \"$GTK_CFLAGS\"|sed 's/-I/-isystem /g'`"
 529   GLIB_CFLAGS="`echo \"$GLIB_CFLAGS\"|sed 's/-I/-isystem /g'`"
 530
 531   if test "$gcc_werror" != ''; then
 532     # GCC 2.95 doesn't know to ignore warnings from system headers
 533     AC_CACHE_CHECK([whether -Werror is usable],
 534                     rjk_cv_werror, [
 535       save_CFLAGS="${CFLAGS}"
 536       CFLAGS="${CFLAGS} ${GTK_CFLAGS} -Werror"
 537       AC_TRY_COMPILE([#if WITH_GTK
 538  #include <gtk/gtk.h>
 539 #endif
 540
 541 struct s { int a, b; };
 542 const struct s sv = { .a = 1 };],
 543                      [],
 544                      [rjk_cv_werror=yes],
 545                      [rjk_cv_werror=no])
 546       CFLAGS="${save_CFLAGS}"
 547     ])
 548     if test $rjk_cv_werror = no; then
 549       gcc_werror=''
 550     fi
 551   fi
 552   CC="${CC} $gcc_werror"
 553
 554   # for older GCCs that don't know %ju (etc)
 555   AC_CACHE_CHECK([whether -Wno-format is required],
 556                  rjk_cv_noformat,
 557                  AC_TRY_COMPILE([#include <stdio.h>
 558 #include <stdint.h>
 559 ],
 560                                 [printf("%ju", (uintmax_t)0);],
 561                                 [rjk_cv_noformat=no],
 562                                 [rjk_cv_noformat=yes]))
 563   if test $rjk_cv_noformat = yes; then
 564     CC="${CC} -Wno-format"
 565   fi
 566
 567   AC_CACHE_CHECK([whether -Wshadow is OK],
 568                  rjk_cv_shadow,
 569                  oldCC="${CC}"
 570                  CC="${CC} -Wshadow"
 571                  [AC_TRY_COMPILE([
 572 #include <unistd.h>
 573 #include <vorbis/vorbisfile.h>
 574 ],
 575                                 [],
 576                                 [rjk_cv_shadow=yes],
 577                                 [rjk_cv_shadow=no])
 578                  CC="${oldCC}"])
 579   if test $rjk_cv_shadow = yes; then
 580     CC="${CC} -Wshadow"
 581   fi
 582 fi
 583
 584 RJK_GCOV
 585
 586 AH_BOTTOM([#ifdef __GNUC__
 587 # define attribute(x) __attribute__(x)
 588 #else
 589 # define attribute(x)
 590 #endif])
 591
 592 AC_CONFIG_FILES([Makefile
 593                  images/Makefile
 594                  scripts/Makefile
 595                  lib/Makefile
 596                  server/Makefile
 597                  cgi/Makefile
 598                  clients/Makefile
 599                  disobedience/Makefile
 600                  doc/Makefile
 601                  templates/Makefile
 602                  plugins/Makefile
 603                  driver/Makefile
 604                  debian/Makefile
 605                  sounds/Makefile
 606                  python/Makefile
 607                  examples/Makefile
 608                  libtests/Makefile
 609                  tests/Makefile])
 610 AC_OUTPUT
 611
 612 if test $GCC = yes && test "$gcc_werror" = ''; then
 613   AC_MSG_WARN([building without -Werror])
 614 fi
 615 if test $want_python = no; then
 616   AC_MSG_WARN([cannot run the test suit without Python])
 617 fi