/[svn]/linuxsampler/trunk/configure.ac
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revision 18 by schoenebeck, Sun Dec 7 05:03:43 2003 UTC revision 1750 by schoenebeck, Thu Jul 10 15:00:38 2008 UTC
# Line 1  Line 1 
1  AC_INIT(configure.in)  AC_INIT(configure.in)
2    
3    #------------------------------------------------------------------------------------
4    # LinuxSampler's / liblinuxsampler's "official" release version:
5    
6    LINUXSAMPLER_RELEASE_MAJOR=0
7    LINUXSAMPLER_RELEASE_MINOR=5
8    LINUXSAMPLER_RELEASE_BUILD=1.6cvs
9    
10    #------------------------------------------------------------------------------------
11    # The following is the libtool / shared library version. This doesn't have to
12    # do anything with the release version. It MUST conform to the following rules:
13    #
14    #  1. Start with version information of `0:0:0' for each libtool library.
15    #  2. Update the version information only immediately before a public release of
16    #     your software. More frequent updates are unnecessary, and only guarantee
17    #     that the current interface number gets larger faster.
18    #  3. If the library source code has changed at all since the last update, then
19    #     increment revision (`c:r:a' becomes `c:r+1:a').
20    #  4. If any interfaces have been added, removed, or changed since the last update,
21    #     increment current, and set revision to 0.
22    #  5. If any interfaces have been added since the last public release, then increment
23    #     age.
24    #  6. If any interfaces have been removed since the last public release, then set age
25    #     to 0.
26    
27    LIBLINUXSAMPLER_LT_CURRENT=2
28    LIBLINUXSAMPLER_LT_REVISION=0
29    LIBLINUXSAMPLER_LT_AGE=1
30    SHARED_VERSION_INFO="$LIBLINUXSAMPLER_LT_CURRENT:$LIBLINUXSAMPLER_LT_REVISION:$LIBLINUXSAMPLER_LT_AGE"
31    
32    #------------------------------------------------------------------------------------
33    # the LSCP specification version this LinuSampler release complies with:
34    
35    LSCP_RELEASE_MAJOR=1
36    LSCP_RELEASE_MINOR=4
37    
38    AC_DEFINE_UNQUOTED(LSCP_RELEASE_MAJOR, ${LSCP_RELEASE_MAJOR}, [LSCP spec major version this release complies with.])
39    AC_DEFINE_UNQUOTED(LSCP_RELEASE_MINOR, ${LSCP_RELEASE_MINOR}, [LSCP spec minor version this release complies with.])
40    
41    AC_PROG_CXX
42    AM_PROG_LIBTOOL
43    
44    AC_SUBST(SHLIB_VERSION_ARG)
45    AC_SUBST(SHARED_VERSION_INFO)
46    
47  AC_C_BIGENDIAN  AC_C_BIGENDIAN
48  AC_CANONICAL_SYSTEM  AC_CANONICAL_SYSTEM
49    
50    AC_SUBST(target)
51    AC_SUBST(target_alias)
52    AC_SUBST(target_cpu)
53    AC_SUBST(target_os)
54    AC_SUBST(target_vendor)
55    
56  echo -n "checking whether x86 architecture... "  PKG_PROG_PKG_CONFIG
57    
58    ###########################################################################
59    # General Checks
60    
61    AC_MSG_CHECKING([whether x86 architecture])
62  def_arch_x86=0  def_arch_x86=0
63  case $target_cpu in  case $target_cpu in
64    "i386" | "i486" | "i586" | "i686" | "i786")    "i386" | "i486" | "i586" | "i686" | "i786")
# Line 14  case $target_cpu in Line 69  case $target_cpu in
69  esac  esac
70  AC_DEFINE_UNQUOTED(ARCH_X86,$def_arch_x86,[Define to 1 if you build for x86 architecture.])  AC_DEFINE_UNQUOTED(ARCH_X86,$def_arch_x86,[Define to 1 if you build for x86 architecture.])
71    
72    # determine the right gcc switch for CPU specific optimizations
73  AC_CHECK_HEADER(alsa/asoundlib.h,  # (only if the user did not provide one)
74      AC_CHECK_LIB(asound, main,  CXX_CPU_SWITCH=
75                               have_alsa="true"  if ! echo "X $CXXFLAGS " | grep -q -- " \(-march=\|-mcpu=\|-mtune=\|-arch=\)" ; then
76                               ,    if test "$def_arch_x86" = 1; then
77                               have_alsa="false"      CXX_CPU_SWITCH="-march=$target_cpu"
78                  )    elif test "$target_cpu" = "ppc"; then
79                  ,      CXX_CPU_SWITCH="-arch=$target_cpu"
80                  have_alsa="false"    fi
 )  
 if test "$have_alsa" = "false"; then  
     echo "Alsa not installed!"  
     echo "Sorry, LinuxSampler only supports Alsa sound drivers at the moment!"  
     exit -1;  
81  fi  fi
82    AC_SUBST([CXX_CPU_SWITCH])
83    
84    # check if we're on MS Windows
85    AC_CHECK_HEADERS(
86        mmsystem.h,
87        have_windows=1,
88        have_windows=0
89    )
90    AM_CONDITIONAL(HAVE_WINDOWS, test $have_windows = "1")
91    
92  echo -n "checking Alsa version... "  AC_MSG_CHECKING([whether UNIX98 compatible])
93  AC_LANG_SAVE  AC_LANG_SAVE
94  AC_LANG_C  AC_LANG_C
95  AC_TRY_RUN([  AC_TRY_RUN([
96  #include <alsa/asoundlib.h>  #ifndef _GNU_SOURCE
97  void main(void) {  #define _GNU_SOURCE 1
 /* ensure backward compatibility */  
 #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)  
 #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR  
98  #endif  #endif
99  exit(SND_LIB_MAJOR);  #include <features.h>
 }  
 ],  
 alsa_major=0,  
 alsa_major=$?,  
 alsa_major=0  
 )  
 AC_TRY_RUN([  
 #include <alsa/asoundlib.h>  
100  void main(void) {  void main(void) {
101  /* ensure backward compatibility */  #if _XOPEN_SOURCE >= 500
102  #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)  exit(0); /* UNIX98 compatible */
103  #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR  #else
104    exit(-1); /* not UNIX98 compatible */
105  #endif  #endif
 exit(SND_LIB_MINOR);  
106  }  }
107  ],  ],
108  alsa_minor=0,  have_unix98="yes",
109  alsa_minor=$?,  have_unix98="no",
110  alsa_minor=0  have_unix98="no"
111  )  )
112  AC_TRY_RUN([  AC_LANG_RESTORE
113  #include <alsa/asoundlib.h>  AC_MSG_RESULT([$have_unix98])
114  void main(void) {  if test "$have_unix98" = "no" -a "have_windows" = "0"; then
115  /* ensure backward compatibility */      if test "x$HAVE_UNIX98" = "x"; then
116  #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)          echo "LinuxSampler only runs on UNIX98 compatible systems, which is mandatory for"
117  #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR          echo "pthread_mutexattr_settype() call in Mutex.cpp. You may want to run
118  #endif          echo "./configure with environment variable HAVE_UNIX98=1 in case you think you
119  exit(SND_LIB_SUBMINOR);          echo "have a UNIX98 compatible system."
120  }          exit -1;
121  ],      fi
122  alsa_subminor=0,  fi
123  alsa_subminor=$?,  
124  alsa_subminor=0  # check for <features.h>
125    AC_CHECK_HEADERS(features.h)
126    
127    # test for POSIX thread library
128    m4_ifdef([m4_include(m4/pthread.m4)],,
129                 [sinclude([m4/pthread.m4])])
130    ACX_PTHREAD
131    LIBS="$PTHREAD_LIBS $LIBS"
132    CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
133    CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS"
134    CC="$PTHREAD_CC"
135    
136    # check for a bug in NPTL-enabled glibc
137    # (see Gentoo bug report #194076)
138    AC_ARG_ENABLE(nptl-bug-check,
139      [  --disable-nptl-bug-check
140                              Disable check for a bug in certain NPTL-enabled
141                              glibc versions that caused crashs.],
142      [config_check_nptl_bug="$enableval"],
143      [config_check_nptl_bug="yes"]
144    )
145    if test "$config_check_nptl_bug" = "yes"; then
146        m4_ifdef([m4_include(m4/nptl_bug.m4)],,
147                 [sinclude([m4/nptl_bug.m4])])
148        ACX_NPTL_GLIBC_BUG([
149            echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
150            echo "You seem to have a buggy PTHREAD library! LinuxSampler would"
151            echo "probably crash due to this. Please report us the system you are"
152            echo "using and/or file a bug report to the bug tracking system of"
153            echo "your distribution."
154            echo "If you have a NPTL-enabled glibc AND it was compiled for TLS as"
155            echo "well, you can try to circumvent this problem for now by setting"
156            echo "the environment variable LD_ASSUME_KERNEL=\"2.4.1\" , which"
157            echo "should cause this test to pass."
158            echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
159            AC_MSG_ERROR([possibly NPTL glibc bug detected])
160        ])
161    else
162        echo "NPTL glibc bug check disabled"
163    fi
164    
165    # FIXME: this is actually a dependency of libgig, not of LS directly, why
166    # isn't it hidden by libgig?
167    AC_CHECK_HEADERS(uuid/uuid.h)
168    AC_SEARCH_LIBS(uuid_generate, uuid)
169    
170    
171    
172    ###########################################################################
173    # Checks for available audio and MIDI systems / drivers
174    # (we throw an error if there's not at least one system for audio output and MIDI input available)
175    
176    have_midi_input_driver="false"
177    have_audio_output_driver="false"
178    
179    # ALSA
180    AC_ARG_ENABLE(alsa-driver,
181      [  --disable-alsa-driver
182                              Disable support for the Advanced Linux Sound
183                              Architecture (ALSA).],
184      [config_alsa_driver="$enableval"],
185      [config_alsa_driver="yes"]
186    )
187    have_alsa=0
188    if test "$config_alsa_driver" = "yes"; then
189        AC_CHECK_HEADER(alsa/asoundlib.h,
190            AC_CHECK_LIB(asound, main,
191                                     have_alsa=1
192                                     ,
193                                     have_alsa=0
194                        )
195                        ,
196                        have_alsa=0
197        )
198        if test "$have_alsa" = "1"; then
199            have_midi_input_driver="true"
200            have_audio_output_driver="true";
201        fi
202    
203        echo -n "checking Alsa version... "
204        AC_LANG_SAVE
205        AC_LANG_C
206        AC_TRY_RUN([
207            #include <alsa/asoundlib.h>
208            void main(void) {
209                /* ensure backward compatibility */
210                #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
211                #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR
212                #endif
213                exit(SND_LIB_MAJOR);
214            }
215        ],
216        alsa_major=0,
217        alsa_major=$?,
218        alsa_major=0
219        )
220        AC_TRY_RUN([
221            #include <alsa/asoundlib.h>
222            void main(void) {
223                /* ensure backward compatibility */
224                #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
225                #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
226                #endif
227                exit(SND_LIB_MINOR);
228            }
229        ],
230        alsa_minor=0,
231        alsa_minor=$?,
232        alsa_minor=0
233        )
234        AC_TRY_RUN([
235            #include <alsa/asoundlib.h>
236            void main(void) {
237                /* ensure backward compatibility */
238                #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
239                #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
240                #endif
241                exit(SND_LIB_SUBMINOR);
242            }
243        ],
244        alsa_subminor=0,
245        alsa_subminor=$?,
246        alsa_subminor=0
247        )
248        AC_LANG_RESTORE
249        echo "$alsa_major.$alsa_minor.$alsa_subminor";
250        AC_DEFINE_UNQUOTED(ALSA_MAJOR,$alsa_major,[Define to the major version number of your Alsa installation.])
251        AC_DEFINE_UNQUOTED(ALSA_MINOR,$alsa_minor,[Define to the minor version number of your Alsa installation.])
252        AC_DEFINE_UNQUOTED(ALSA_SUBMINOR,$alsa_subminor,[Define to the subminor version number of your Alsa installation.])
253    else
254        echo "ALSA support disabled by configure script parameter"
255    fi
256    AM_CONDITIONAL(HAVE_ALSA, test $have_alsa = "1")
257    AC_DEFINE_UNQUOTED(HAVE_ALSA,$have_alsa,[Define to 1 if you have ALSA installed.])
258    
259    # JACK
260    AC_ARG_ENABLE(jack-driver,
261      [  --disable-jack-driver
262                              Disable support for the Jack Audio Connection Kit
263                              (JACK).],
264      [config_jack_driver="$enableval"],
265      [config_jack_driver="yes"]
266    )
267    have_jack=0
268    if test "$config_jack_driver" = "yes"; then
269        PKG_CHECK_MODULES(JACK, jack, have_jack=1, have_jack=0)
270        if test $have_jack = "1"; then
271            AC_SUBST(JACK_LIBS)
272            AC_SUBST(JACK_CFLAGS)
273            linuxsampler_save_LIBS=$LIBS
274            LIBS="$JACK_LIBS $LIBS"
275            AC_CHECK_FUNCS(jack_client_name_size jack_client_open)
276            LIBS=$linuxsampler_save_LIBS
277            have_audio_output_driver="true";
278        fi
279    else
280        echo "JACK support disabled by configure script parameter"
281    fi
282    AM_CONDITIONAL(HAVE_JACK, test $have_jack = "1")
283    AC_DEFINE_UNQUOTED(HAVE_JACK,$have_jack,[Define to 1 if you have JACK installed.])
284    
285    # JACK MIDI
286    have_jack_midi=0
287    if test $have_jack = "1"; then
288        linuxsampler_save_CFLAGS=$CFLAGS
289        linuxsampler_save_LIBS=$LIBS
290        CFLAGS="$JACK_CFLAGS $CFLAGS"
291        LIBS="$JACK_LIBS $LIBS"
292        AC_CHECK_HEADER(jack/midiport.h, have_jack_midi=1, have_jack_midi=0)
293        if test $have_jack_midi = "1"; then
294            AC_CHECK_FUNCS(jack_midi_get_event_count)
295            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <jack/midiport.h>]], [[
296                jack_midi_clear_buffer(0, 0);
297            ]])], [AC_DEFINE(JACK_MIDI_FUNCS_NEED_NFRAMES, 1,
298                      [Define to 1 if you have the old jack midi functions that need an nframes argument.])])
299            have_midi_input_driver="true"
300        fi
301        CFLAGS=$linuxsampler_save_CFLAGS
302        LIBS=$linuxsampler_save_LIBS
303    fi
304    AM_CONDITIONAL(HAVE_JACK_MIDI, test $have_jack_midi = "1")
305    AC_DEFINE_UNQUOTED(HAVE_JACK_MIDI, $have_jack_midi,
306                       [Define to 1 if you have JACK with MIDI support installed.])
307    
308    # ARTS
309    AC_ARG_ENABLE(arts-driver,
310      [  --disable-arts-driver
311                              Disable support for the Analogue Realtime System
312                              (aRts).],
313      [config_arts_driver="$enableval"],
314      [config_arts_driver="yes"]
315    )
316    have_arts=0
317    if test "$config_arts_driver" = "yes"; then
318        m4_ifdef([m4_include(m4/arts.m4)],,
319                 [sinclude([m4/arts.m4])])
320        AM_PATH_ARTS(0.9.5, have_arts=1, have_arts=0)
321        if test "$have_arts" = "1"; then
322            have_audio_output_driver="true"
323        fi
324    else
325        echo "ARTS support disabled by configure script parameter"
326    fi
327    AM_CONDITIONAL(HAVE_ARTS, test "$have_arts" = "1")
328    AC_DEFINE_UNQUOTED(HAVE_ARTS,$have_arts,[Define to 1 if you have aRts installed.])
329    
330    # ASIO AUDIO (Win32)
331    AC_ARG_ENABLE(asiosdk-dir,
332      [  --enable-asiosdk-dir
333                              Directory where the ASIO SDK is located, this automatically
334                              enables the compilation of the ASIO audio output driver.],
335      [config_asiosdk_dir="${enableval}"],
336      [config_asiosdk_dir="."]
337    )
338    AC_SUBST(config_asiosdk_dir)
339    
340    AC_ARG_ENABLE(asio-driver,
341      [  --disable-asio-driver
342                              Disable support for the Windows ASIO driver.],
343      [config_asio_driver="$enableval"],
344      [config_asio_driver="yes"]
345    )
346    have_asio=0
347    ASIOSDK_BASEDIR=
348    if test "$config_asio_driver" = "yes"; then
349        asiosdk_headerfile=$config_asiosdk_dir/ASIOSDK2/common/asio.h
350        echo -n "checking for ASIO headerfile: $asiosdk_headerfile ...."
351        if test -e $asiosdk_headerfile ; then
352            echo yes
353            have_asio=1
354            ASIOSDK_BASEDIR="$config_asiosdk_dir"
355        else
356            echo no
357            have_asio=0
358        fi
359        if test "$have_asio" = "1"; then
360            have_audio_output_driver="true"
361        fi
362    else
363        echo "Windows ASIO support disabled by configure script parameter"
364    fi
365    AC_SUBST(ASIOSDK_BASEDIR)
366    AM_CONDITIONAL(HAVE_ASIO, test $have_asio = "1")
367    AC_DEFINE_UNQUOTED(HAVE_ASIO,$have_asio,[Define to 1 if you have ASIO installed.])
368    
369    # MidiShare (Linux, OS X, Windows)
370    AC_ARG_ENABLE(midishare-driver,
371      [  --disable-midishare-driver
372                              Disable support for the MidiShare system.],
373      [config_midishare_driver="$enableval"],
374      [config_midishare_driver="yes"]
375    )
376    have_midishare=0
377    if test "$config_midishare_driver" = "yes"; then
378        AC_CHECK_HEADER(MidiShare.h,
379            AC_CHECK_LIB(MidiShare, MidiCountEvs,
380                                    have_midishare=1,
381                                    have_midishare=0
382                        )
383                        ,
384                        have_midishare=0
385        )
386        if test "$have_midishare" = "1"; then
387            have_midi_input_driver="true"
388        fi
389    else
390        echo "MidiShare support disabled by configure script parameter"
391    fi
392    AM_CONDITIONAL(HAVE_MIDISHARE, test $have_midishare = "1")
393    AC_DEFINE_UNQUOTED(HAVE_MIDISHARE,$have_midishare,[Define to 1 if you have MidiShare installed.])
394    
395    # CoreMIDI (OS X)
396    AC_ARG_ENABLE(coremidi-driver,
397      [  --disable-coremidi-driver
398                              Disable support for the Apple CoreMIDI system.],
399      [config_coremidi_driver="$enableval"],
400      [config_coremidi_driver="yes"]
401    )
402    have_coremidi=0
403    if test "$config_coremidi_driver" = "yes"; then
404        AC_CHECK_HEADER(CoreMIDI/CoreMIDI.h,
405            have_coremidi=1,
406            have_coremidi=0
407        )
408        if test "$have_coremidi" = "1"; then
409            have_midi_input_driver="true"
410        fi
411    else
412        echo "CoreMIDI support disabled by configure script parameter"
413    fi
414    AM_CONDITIONAL(HAVE_COREMIDI, test $have_coremidi = "1")
415    AC_DEFINE_UNQUOTED(HAVE_COREMIDI,$have_coremidi,[Define to 1 if you have CoreMIDI installed.])
416    
417    # MME MIDI (Win32)
418    AC_ARG_ENABLE(mmemidi-driver,
419      [  --disable-mmemidi-driver
420                              Disable support for the Windows MME MIDI system.],
421      [config_mmemidi_driver="$enableval"],
422      [config_mmemidi_driver="yes"]
423    )
424    have_mmemidi=0
425    if test "$config_mmemidi_driver" = "yes"; then
426        AC_CHECK_HEADERS(mmsystem.h,
427            have_mmemidi=1,
428            have_mmemidi=0
429        )
430        if test "$have_mmemidi" = "1"; then
431            have_midi_input_driver="true"
432        fi
433    else
434        echo "MME MIDI support disabled by configure script parameter"
435    fi
436    AM_CONDITIONAL(HAVE_MME_MIDI, test $have_mmemidi = "1")
437    AC_DEFINE_UNQUOTED(HAVE_MME_MIDI,$have_mmemidi,[Define to 1 if you have MME MIDI installed.])
438    
439    # have we found at least one MIDI input and one audio output driver ?
440    if test "$have_midi_input_driver" = "false"; then
441        echo "No supported MIDI input system found!"
442        echo "Sorry, LinuxSampler only supports the following MIDI drivers at the moment:"
443        echo "ALSA, JACK, MIDIShare, CoreMIDI, MME."
444        echo "If you think you have one of those available on your system, make sure you"
445        echo "also have the respective development (header) files installed."
446        exit -1;
447    fi
448    if test "$have_audio_output_driver" = "false"; then
449        echo "No supported audio output system found!"
450        echo "Sorry, LinuxSampler only supports ALSA, JACK, ARTS and ASIO as audio output"
451        echo "driver at the moment!"
452        exit -1;
453    fi
454    
455    
456    
457    ###########################################################################
458    # Checks for various DLL libraries
459    
460    # Check presence of libgig
461    libgig_version="3.2.1"
462    PKG_CHECK_MODULES(GIG, gig >= $libgig_version, HAVE_GIG=true, HAVE_GIG=false)
463    if test "$HAVE_GIG" = "false"; then
464        echo "Required libgig version not found!"
465        echo "You need to have libgig version ${libgig_version} installed!"
466        exit -1;
467    else
468        echo "yes, found libgig $libgig_version"
469    fi
470    AC_SUBST(GIG_CFLAGS)
471    AC_SUBST(GIG_LIBS)
472    
473    # Instruments DB feature (requires SQLite 3.3)
474    AC_ARG_ENABLE(instruments-db,
475      [  --disable-instruments-db
476                              Disable compilation of the sampler's instruments
477                              database feature. You need to have SQLite 3.3
478                              or younger installed for this feature.],
479      [config_instruments_db="$enableval"],
480      [config_instruments_db="yes"]
481    )
482    HAVE_SQLITE3=0;
483    if test "$config_instruments_db" = "yes"; then
484        # Check presence of sqlite3
485        sqlite_version="3.3"
486        PKG_CHECK_MODULES(SQLITE3, sqlite3 >= $sqlite_version, HAVE_SQLITE3=true, HAVE_SQLITE3=false)
487        AC_SUBST(SQLITE3_LIBS)
488        AC_SUBST(SQLITE3_CFLAGS)
489        if test $HAVE_SQLITE3 = false; then
490            HAVE_SQLITE3=0
491            config_instruments_db="no"
492            echo "*** Required sqlite version not found!"
493            echo "*** You need to have sqlite version ${sqlite_version} or higher"
494            echo "*** for instruments database support to be enabled."
495            echo "*** Support for instruments DB will be disabled!"
496        else
497            HAVE_SQLITE3=1
498        fi
499    else
500        echo "Instruments DB feature disabled by configure script parameter"
501    fi
502    AM_CONDITIONAL(HAVE_SQLITE3, test $HAVE_SQLITE3 = 1)
503    AC_DEFINE_UNQUOTED(HAVE_SQLITE3,$HAVE_SQLITE3,[Define to 1 if you want the instruments DB feature and have SQLITE3 installed.])
504    
505    
506    
507    ###########################################################################
508    # Handle Configuration Options
509    
510    # TODO: should we use AC_ARG_VAR(variable, description) instead?
511    
512    AC_ARG_ENABLE(asm,
513      [  --disable-asm
514                              Enable hand-crafted assembly optimizations
515                              (default=on). LinuxSampler provides CPU specific
516                              assembly optimizations. This is currently limited
517                              to just enter a fast (denormal) FPU mode on x86
518                              platforms. There are currently no synthesis core
519                              assembly optimizations anymore since LS 0.4.0],
520      [config_asm="$enableval"],
521      [config_asm="yes"]
522    )
523    if test "$config_asm" = "yes"; then
524      AC_DEFINE_UNQUOTED(CONFIG_ASM, 1, [Define to 1 if you want to enable asm optimizations.])
525    fi
526    
527    AC_ARG_ENABLE(dev-mode,
528      [  --enable-dev-mode
529                              Enable development mode (default=off). In that mode
530                              we do some extra sanity checks here and there.
531                              This helps to spot possible problems, but reduces
532                              efficiency a bit],
533      [config_dev_mode="$enableval"],
534      [config_dev_mode="no"]
535    )
536    if test "$config_dev_mode" = "yes"; then
537      AC_DEFINE_UNQUOTED(CONFIG_DEVMODE, 1, [Define to 1 if you want to enable development mode.])
538    fi
539    
540    AC_ARG_ENABLE(debug-level,
541      [  --enable-debug-level
542                              Specify verbosity of console messages (default=1).
543                              The higher the value, the higher will be verbosity.
544                              A value of 0 means no console output at all.
545                              There's not really an upper limit but the usual
546                              level of all messages is currently somewhere less
547                              than 10.],
548      [config_debug_level="${enableval}"],
549      [config_debug_level="1"]
550    )
551    AC_DEFINE_UNQUOTED(CONFIG_DEBUG_LEVEL, $config_debug_level, [Define console verbosity.])
552    
553    AC_ARG_ENABLE(rt-exceptions,
554      [  --enable-rt-exceptions
555                              Enable exceptions in the realtime thread
556                              (default=no). If this is enabled, exceptions will
557                              be thrown on critical errors in the realtime
558                              context as well. Otherwise if disabled
559                              segmentation faults will be forced by the
560                              application on critical errors.],
561      [config_rt_exceptions="$enableval"],
562      [config_rt_exceptions="no"]
563    )
564    if test "$config_rt_exceptions" = "yes"; then
565      AC_DEFINE_UNQUOTED(CONFIG_RT_EXCEPTIONS, 1, [Define to 1 to allow exceptions in the realtime context.])
566    fi
567    
568    AC_ARG_ENABLE(pthread-testcancel,
569      [  --enable-pthread-testcancel
570                              Enable pthread_testcancel() calls and avoid asynchronous
571                              cancel of pthreads (default=no).],
572      [config_pthread_testcancel="$enableval"],
573      [config_pthread_testcancel="no"]
574  )  )
575    if test "$config_pthread_testcancel" = "yes"; then
576      AC_DEFINE_UNQUOTED(CONFIG_PTHREAD_TESTCANCEL, 1, [Define to 1 to enable pthread_testcancel() calls.])
577    fi
578    
579    AC_ARG_ENABLE(preload-samples,
580      [  --enable-preload-samples
581                              Due to seeking and latency issues with hard drives
582                              we have to cache a small part of samples' head in
583                              RAM (default=32768). The higher this value the
584                              more memory will be occupied for each sample, but
585                              the safer this will be in regards of possible
586                              droputs. A 'good' value depends on the running
587                              system and usage dependant factors.],
588      [config_preload_samples="${enableval}"],
589      [config_preload_samples="32768"]
590    )
591    AC_DEFINE_UNQUOTED(CONFIG_PRELOAD_SAMPLES, $config_preload_samples, [Define amount of sample points to be cached in RAM.])
592    
593    AC_ARG_ENABLE(max-pitch,
594      [  --enable-max-pitch
595                              Specify the maximum allowed pitch value in octaves
596                              (default=4). To lower memory usage you might want
597                              set a smaller value.],
598      [config_max_pitch="${enableval}"],
599      [config_max_pitch="4"]
600    )
601    AC_DEFINE_UNQUOTED(CONFIG_MAX_PITCH, $config_max_pitch, [Define max. allowed pitch.])
602    
603    AC_ARG_ENABLE(max-events,
604      [  --enable-max-events
605                              Specify the maximum allowed amount of events to be
606                              processed per fragment (default=1024).],
607      [config_max_events="${enableval}"],
608      [config_max_events="1024"]
609    )
610    AC_DEFINE_UNQUOTED(CONFIG_MAX_EVENTS_PER_FRAGMENT, $config_max_events, [Define max. allowed events per fragment.])
611    
612    AC_ARG_ENABLE(eg-bottom,
613      [  --enable-eg-bottom
614                              Bottom limit of envelope generators
615                              (default=0.001). Certain kinds of curve types like
616                              exponential curves converge against 0 but never
617                              reach 0. So we have to define a certain low value
618                              after which we should consider all smaller values
619                              to be 'almost zero'. The smaller this value, the
620                              longer will voices survive in EG's release stage
621                              and thus waste voices. If this value is too high
622                              will cause click sounds though.],
623      [config_eg_bottom="${enableval}"],
624      [config_eg_bottom="0.001"]
625    )
626    AC_DEFINE_UNQUOTED(CONFIG_EG_BOTTOM, $config_eg_bottom, [Define bottom limit of envelopes.])
627    
628    AC_ARG_ENABLE(eg-min-release-time,
629      [  --enable-eg-min-release-time
630                              Specify the lowest allowed release time in seconds
631                              (default=0.0025). This value will also be used to
632                              ramp down voices on voice stealing. This value
633                              should always be less than the period time of the
634                              used audio driver, as in case of voice stealing
635                              the killed voice needs to be completely ramped
636                              down in the same fragment.],
637      [config_eg_min_release_time="${enableval}"],
638      [config_eg_min_release_time="0.0025"]
639    )
640    AC_DEFINE_UNQUOTED(CONFIG_EG_MIN_RELEASE_TIME, $config_eg_min_release_time, [Define min. release time.])
641    
642    AC_ARG_ENABLE(refill-streams,
643      [  --enable-refill-streams
644                              Number of streams that should be refilled in each
645                              disk thread cycle (default=4).],
646      [config_refill_streams="${enableval}"],
647      [config_refill_streams="4"]
648    )
649    AC_DEFINE_UNQUOTED(CONFIG_REFILL_STREAMS_PER_RUN, $config_refill_streams, [Define amount of streams to be refilled per cycle.])
650    
651    AC_ARG_ENABLE(stream-min-refill,
652      [  --enable-stream-min-refill
653                              Minimum refill size for disk streams (default=1024).
654                              The disk thread will go to sleep for a while if no
655                              stream had to be refilled more than this value in
656                              a disk thread cycle.],
657      [config_stream_min_refill="${enableval}"],
658      [config_stream_min_refill="1024"]
659    )
660    AC_DEFINE_UNQUOTED(CONFIG_STREAM_MIN_REFILL_SIZE, $config_stream_min_refill, [Define min. stream refill size.])
661    
662    AC_ARG_ENABLE(stream-max-refill,
663      [  --enable-stream-max-refill
664                              Maximum refill size for disk streams
665                              (default=65536). The disk thread will refill
666                              each stream only by a size of this value per
667                              disk thread cycle.],
668      [config_stream_max_refill="${enableval}"],
669      [config_stream_max_refill="65536"]
670    )
671    AC_DEFINE_UNQUOTED(CONFIG_STREAM_MAX_REFILL_SIZE, $config_stream_max_refill, [Define max. stream refill size.])
672    
673    AC_ARG_ENABLE(stream-size,
674      [  --enable-stream-size
675                              Size of each stream's ring buffer in sample points
676                              (default=262144).],
677      [config_stream_size="${enableval}"],
678      [config_stream_size="262144"]
679    )
680    AC_DEFINE_UNQUOTED(CONFIG_STREAM_BUFFER_SIZE, $config_stream_size, [Define each stream's ring buffer size.])
681    
682    AC_ARG_ENABLE(max-streams,
683      [  --enable-max-streams
684                              Maximum amount of disk streams (default=90). This
685                              value should always be higher than the maximum
686                              amount of voices.],
687      [config_max_streams="${enableval}"],
688      [config_max_streams="90"]
689    )
690    AC_DEFINE_UNQUOTED(CONFIG_MAX_STREAMS, $config_max_streams, [Define max. streams.])
691    
692    AC_ARG_ENABLE(max-voices,
693      [  --enable-max-voices
694                              Maximum amount of voices (default=64). This value
695                              should always be lower than the maximum amount of
696                              disk streams.],
697      [config_max_voices="${enableval}"],
698      [config_max_voices="64"]
699    )
700    AC_DEFINE_UNQUOTED(CONFIG_MAX_VOICES, $config_max_voices, [Define max. voices.])
701    
702    AC_ARG_ENABLE(subfragment-size,
703      [  --enable-subfragment-size
704                              Every audio fragment will be splitted into
705                              subfragments. Where each subfragment renders
706                              audio with constant synthesis parameters. This is
707                              done for efficiency reasons. This parameter
708                              defines the default size of a subfragment in
709                              sample points. A large value means less CPU time
710                              whereas a low value means better audio quality
711                              (default=32).],
712      [config_subfragment_size="${enableval}"],
713      [config_subfragment_size="32"]
714    )
715    AC_DEFINE_UNQUOTED(CONFIG_DEFAULT_SUBFRAGMENT_SIZE, $config_subfragment_size, [Define default subfragment size (in sample points).])
716    
717    AC_ARG_ENABLE(global-attenuation-default,
718      [  --enable-global-attenuation-default
719                              To prevent clipping all samples will be lowered
720                              in amplitude by this given default factor (can
721                              be overridden at runtime).
722                              (default=0.35)],
723      [config_global_attenuation_default="${enableval}"],
724      [config_global_attenuation_default="0.35"]
725    )
726    AC_DEFINE_UNQUOTED(CONFIG_GLOBAL_ATTENUATION_DEFAULT, $config_global_attenuation_default, [Define default global volume attenuation (as floating point factor).])
727    
728    AC_ARG_ENABLE(voice-steal-algo,
729      [  --enable-voice-steal-algo
730                              Voice stealing algorithm to be used. Currently
731                              available options:
732                                none:
733                                  Disable voice stealing completely.
734                                oldestvoiceonkey (default):
735                                  Try to kill a voice on the same key first,
736                                  if no success, proceed with the oldest key.
737                                oldestkey:
738                                  Try to kill a voice from the oldest active
739                                  key.],
740      [ if test ! "(" "${enableval}" = "none" \
741                  -o "${enableval}" = "oldestvoiceonkey" \
742                  -o "${enableval}" = "oldestkey" ")" ; then
743          AC_MSG_ERROR([Unknown voice stealing algorithm for parameter --enable-voice-steal-algo])
744        else
745          config_voice_steal_algo="${enableval}"
746        fi
747      ],
748      [config_voice_steal_algo="oldestvoiceonkey"]
749    )
750    AC_DEFINE_UNQUOTED(CONFIG_VOICE_STEAL_ALGO, voice_steal_algo_${config_voice_steal_algo}, [Define voice stealing algorithm to be used.])
751    
752    AC_ARG_ENABLE(sysex-buffer-size,
753      [  --enable-sysex-buffer-size
754                              System Exclusive Message buffer size in kB
755                              (default=2048).],
756      [config_sysex_buffer_size="${enableval}"],
757      [config_sysex_buffer_size="2048"]
758    )
759    AC_DEFINE_UNQUOTED(CONFIG_SYSEX_BUFFER_SIZE, $config_sysex_buffer_size, [Define SysEx buffer size.])
760    
761    AC_ARG_ENABLE(force-filter,
762      [  --enable-force-filter
763                              If enabled will force filter to be used even if
764                              no usage was define in instrument patch files.
765                              (default=no).],
766      [config_force_filter="$enableval"],
767      [config_force_filter="no"]
768    )
769    if test "$config_force_filter" = "yes"; then
770      AC_DEFINE_UNQUOTED(CONFIG_FORCE_FILTER, 1, [Define to 1 to force filter usage.])
771    fi
772    
773    AC_ARG_ENABLE(filter-cutoff-min,
774      [  --enable-filter-cutoff-min
775                              Minimum filter cutoff frequency in Hz
776                              (default=100.0).],
777      [config_filter_cutoff_min="${enableval}"],
778      [config_filter_cutoff_min="100.0"]
779    )
780    AC_DEFINE_UNQUOTED(CONFIG_FILTER_CUTOFF_MIN, ${config_filter_cutoff_min}f, [Define min. filter cutoff frequency.])
781    
782    AC_ARG_ENABLE(filter-cutoff-max,
783      [  --enable-filter-cutoff-max
784                              Maximum filter cutoff frequency in Hz
785                              (default=10000.0).],
786      [config_filter_cutoff_max="${enableval}"],
787      [config_filter_cutoff_max="10000.0"]
788    )
789    AC_DEFINE_UNQUOTED(CONFIG_FILTER_CUTOFF_MAX, ${config_filter_cutoff_max}f, [Define max. filter cutoff frequency.])
790    
791    AC_ARG_ENABLE(override-cutoff-ctrl,
792      [  --enable-override-cutoff-ctrl
793                              Override filter cutoff MIDI controller (default=no).
794                              Note: you have to define the MIDI controller number
795                              here, it's not a boolean parameter type! If this
796                              option is used, controller number given by
797                              instrument patch will be ignored and instead this
798                              supplied value will be used.],
799      [config_override_cutoff_ctrl="${enableval}"],
800      [config_override_cutoff_ctrl="no"]
801    )
802    if test ! "$config_override_cutoff_ctrl" = "no"; then
803      AC_DEFINE_UNQUOTED(CONFIG_OVERRIDE_CUTOFF_CTRL, $config_override_cutoff_ctrl, [Define to a MIDI controller number to override cutoff control.])
804    fi
805    
806    AC_ARG_ENABLE(override-resonance-ctrl,
807      [  --enable-override-resonance-ctrl
808                              Override filter resonance MIDI controller
809                              (default=no). Note: you have to define the MIDI
810                              controller number here, it's not a boolean
811                              parameter type! If this option is used, controller
812                              number given by instrument patch will be ignored
813                              and instead this supplied value will be used.],
814      [config_override_resonance_ctrl="${enableval}"],
815      [config_override_resonance_ctrl="no"]
816    )
817    if test ! "$config_override_resonance_ctrl" = "no"; then
818      AC_DEFINE_UNQUOTED(CONFIG_OVERRIDE_RESONANCE_CTRL, $config_override_resonance_ctrl, [Define to a MIDI controller number to override resonance control.])
819    fi
820    
821    AC_ARG_ENABLE(override-filter-type,
822      [  --enable-override-filter-type
823                              Override filter type (default=no). Options:
824                              hp: for highpass
825                              bp: for bandpass
826                              br: for bandreject
827                              lp: for lowpass
828                              lpt: for lowpass turbo],
829      [ if   test "${enableval}" = "hp" ; then
830           config_override_filter_type="::gig::vcf_type_highpass"
831        elif test "${enableval}" = "bp" ; then
832           config_override_filter_type="::gig::vcf_type_bandpass"
833        elif test "${enableval}" = "br" ; then
834           config_override_filter_type="::gig::vcf_type_bandreject"
835        elif test "${enableval}" = "lp" ; then
836           config_override_filter_type="::gig::vcf_type_lowpass"
837        elif test "${enableval}" = "lpt" ; then
838           config_override_filter_type="::gig::vcf_type_lowpassturbo"
839        elif test ! "${enableval}" = "no"; then
840           AC_MSG_ERROR([Unknown filter type for parameter --enable-override-filter-type])
841        fi
842      ],
843      [config_override_filter_type="no"]
844    )
845    if test ! "$config_override_filter_type" = "no"; then
846      AC_DEFINE_UNQUOTED(CONFIG_OVERRIDE_FILTER_TYPE, $config_override_filter_type, [Define to a filter type to always force that filter type.])
847    fi
848    
849    AC_ARG_ENABLE(gs-checksum,
850      [  --enable-gs-checksum
851                              Enable Roland General Synth SysEx checksum check
852                              (default=no). If this is enabled, all GS SysEx
853                              messages which do not provide a correct checksum
854                              will be ignored. This is disabled by default as
855                              not all devices honor GS checksums.],
856      [config_assert_gs_sysex_checksum="$enableval"],
857      [config_assert_gs_sysex_checksum="no"]
858    )
859    if test "config_assert_gs_sysex_checksum" = "yes"; then
860      AC_DEFINE_UNQUOTED(CONFIG_ASSERT_GS_SYSEX_CHECKSUM, 1, [Define to 1 if you want to enable GS SysEx check.])
861    fi
862    
863    AC_ARG_ENABLE(portamento-time-min,
864      [  --enable-portamento-time-min
865                              Minimum Portamento time in seconds
866                              (default=0.1).],
867      [config_portamento_time_min="${enableval}"],
868      [config_portamento_time_min="0.1"]
869    )
870    AC_DEFINE_UNQUOTED(CONFIG_PORTAMENTO_TIME_MIN, $config_portamento_time_min, [Define min. portamento time.])
871    
872    AC_ARG_ENABLE(portamento-time-max,
873      [  --enable-portamento-time-max
874                              Maximum Portamento time in seconds
875                              (default=32).],
876      [config_portamento_time_max="${enableval}"],
877      [config_portamento_time_max="32"]
878    )
879    AC_DEFINE_UNQUOTED(CONFIG_PORTAMENTO_TIME_MAX, $config_portamento_time_max, [Define max. portamento time.])
880    
881    AC_ARG_ENABLE(portamento-time-default,
882      [  --enable-portamento-time-default
883                              Default Portamento time in seconds
884                              (default=1).],
885      [config_portamento_time_default="${enableval}"],
886      [config_portamento_time_default="1"]
887    )
888    AC_DEFINE_UNQUOTED(CONFIG_PORTAMENTO_TIME_DEFAULT, $config_portamento_time_default, [Define default portamento time.])
889    
890    AC_ARG_ENABLE(signed-triang-algo,
891      [  --enable-signed-triang-algo
892                              Signed triangular wave algorithm to be used (e.g. for LFOs).
893                              Currently available options:
894                                intmath:
895                                  Uses integer math without any branch will then be
896                                  converted to floating point value for each sample point.
897                                  This int->float conversion might hurt on some systems.
898                                intmathabs:
899                                  Similar to intmath but uses abs() function.
900                                  Depending on compiler and platrofm this could
901                                  perform better than integer math as it avoids
902                                  an extra integer multiply instruction.
903                                diharmonic:
904                                  The triangular wave will be approximated by adding two
905                                  sinusoidials. This solution might especially hurt on
906                                  systems with weak floating point unit.
907                                benchmark (default):
908                                  This is not an algorithm. Use this option if the
909                                  appropriate algorithm should be automatically
910                                  chosen by the configure script by performing a
911                                  benchmark between the algorithms mentioned above.
912                                  This will NOT work for cross compilation!],
913      [ if test ! "(" "${enableval}" = "intmath" \
914                  -o "${enableval}" = "intmathabs" \
915                  -o "${enableval}" = "diharmonic" ")" ; then
916          AC_MSG_ERROR([Unknown triangular wave algorithm for parameter --enable-signed-triang-algo])
917        else
918          config_signed_triang_algo="${enableval}"
919        fi
920      ],
921      [config_signed_triang_algo="benchmark"]
922    )
923    
924    AC_ARG_ENABLE(unsigned-triang-algo,
925      [  --enable-unsigned-triang-algo
926                              Unsigned triangular wave algorithm to be used (e.g. for LFOs).
927                              Currently available options:
928                                intmath:
929                                  Uses integer math without any branch will then be
930                                  converted to floating point value for each sample point.
931                                  This int->float conversion might hurt on some systems.
932                                intmathabs:
933                                  Similar to intmath but uses abs() function.
934                                  Depending on compiler and platrofm this could
935                                  perform better than integer math as it avoids
936                                  an extra integer multiply instruction.
937                                diharmonic:
938                                  The triangular wave will be approximated by adding two
939                                  sinusoidials. This solution might especially hurt on
940                                  systems with weak floating point unit.
941                                benchmark (default):
942                                  This is not an algorithm. Use this option if the
943                                  appropriate algorithm should be automatically
944                                  chosen by the configure script by performing a
945                                  benchmark between the algorithms mentioned above.
946                                  This will NOT work for cross compilation!],
947      [ if test ! "(" "${enableval}" = "intmath" \
948                  -o "${enableval}" = "intmathabs" \
949                  -o "${enableval}" = "diharmonic" ")" ; then
950          AC_MSG_ERROR([Unknown triangular wave algorithm for parameter --enable-unsigned-triang-algo])
951        else
952          config_unsigned_triang_algo="${enableval}"
953        fi
954      ],
955      [config_unsigned_triang_algo="benchmark"]
956    )
957    
958    AC_ARG_ENABLE(process-muted-channels,
959      [  --enable-process-muted-channels
960                              Enable processing of muted channels (default=no).
961                              In that mode all MIDI events in the muted channels
962                              will be processed. This will provide information
963                              about the active voices in the muted channels and
964                              will not discard notes, triggered in mute mode,
965                              when the channel is unmuted. But also will reduce
966                              the efficiency.],
967      [config_process_muted_channels="$enableval"],
968      [config_process_muted_channels="no"]
969    )
970    if test "$config_process_muted_channels" = "yes"; then
971      AC_DEFINE_UNQUOTED(CONFIG_PROCESS_MUTED_CHANNELS, 1, [Define to 1 if you want to enable processing of muted channels.])
972    fi
973    
974    AC_ARG_ENABLE(process-all-notes-off,
975      [  --disable-process-all-notes-off
976                              Disable interpretation of All-Notes-Off MIDI
977                              messages (default=on). By default LS will release
978                              all voices whenever it receives an All-Notes-Off
979                              MIDI message. You can disable this behavior, so
980                              that LS simply ignores such messages.],
981      [config_process_all_notes_off="$enableval"],
982      [config_process_all_notes_off="yes"]
983    )
984    if test "$config_process_all_notes_off" = "yes"; then
985      AC_DEFINE_UNQUOTED(CONFIG_PROCESS_ALL_NOTES_OFF, 1, [Define to 1 if you want to enable processing of All-Notes-Off MIDI messages.])
986    fi
987    
988    AC_ARG_ENABLE(interpolate-volume,
989      [  --disable-interpolate-volume
990                              Disable interpolation of volume modulation
991                              (default=on). With this enabled, the volume changes
992                              generated by for example the envelope generator
993                              will be smoother, minimizing the risk for audio
994                              clicks. Disable it to reduce CPU usage.],
995      [config_interpolate_volume="$enableval"],
996      [config_interpolate_volume="yes"]
997    )
998    if test "$config_interpolate_volume" = "yes"; then
999      AC_DEFINE_UNQUOTED(CONFIG_INTERPOLATE_VOLUME, 1, [Define to 1 if you want to enable interpolation of volume modulation.])
1000    fi
1001    
1002    AC_ARG_ENABLE(plugin-dir,
1003      [  --enable-plugin-dir
1004                              Directory where the sampler shall look for potential plugins,
1005                              that is 3rd party shared libraries that should be loaded by
1006                              the sampler on startup. By default the sampler will search
1007                              for plugins in the subdirectory "plugins" below its own
1008                              library directory.
1009                              (i.e. /usr/local/lib/linuxsampler/plugins)],
1010      [config_plugin_dir="${enableval}"],
1011      [config_plugin_dir="${libdir}/linuxsampler/plugins"]
1012    )
1013    AC_SUBST(config_plugin_dir)
1014    
1015    AC_ARG_ENABLE(default-instruments-db-location,
1016      [  --enable-default-instruments-db-location
1017                              Only when instruments DB feature is enabled: file name
1018                              which shall be taken as default location of the
1019                              instruments DB file. This location can still be
1020                              overridden at runtime with a command line switch.
1021                              (default: /var/lib/linuxsampler/instruments.db)],
1022      [config_default_instruments_db_file="${enableval}"],
1023      [config_default_instruments_db_file="/var/lib/linuxsampler/instruments.db"]
1024    )
1025    AC_DEFINE_UNQUOTED(
1026        CONFIG_DEFAULT_INSTRUMENTS_DB_LOCATION,
1027        "$config_default_instruments_db_file",
1028        [Only when instruments DB feature is enabled: default location of the DB file.]
1029    )
1030    AC_SUBST(config_default_instruments_db_file)
1031    
1032    
1033    ###########################################################################
1034    # Automatic Benchmarks (to detect the best algorithms for the system)
1035    
1036    AC_LANG_SAVE
1037    
1038    if test "$config_signed_triang_algo" = "benchmark"; then
1039        echo -n "benchmarking for the best (signed) triangular oscillator algorithm... "
1040        AC_LANG_CPLUSPLUS
1041        AC_TRY_RUN([
1042                #define SIGNED 1
1043                #define SILENT 1
1044                #include "${srcdir}/benchmarks/triang.cpp"
1045            ],
1046            triang_signed=0,
1047            triang_signed=$?,
1048            triang_signed=0
1049        )
1050        if test "$triang_signed" = "2"; then
1051            config_signed_triang_algo="intmath"
1052            echo "integer math"
1053        elif test "$triang_signed" = "3"; then
1054            config_signed_triang_algo="diharmonic"
1055            echo "di harmonics"
1056        elif test "$triang_signed" = "5"; then
1057            config_signed_triang_algo="intmathabs"
1058            echo "integer math using abs()"
1059        else
1060            echo "Benchmark of signed triangular wave algorithms failed!"
1061            echo "Maybe you are doing cross compilation? In that case you have to select"
1062            echo "an algorithm manually with './configure --enable-signed-triang-algo=...'"
1063            echo "Call './configure --help' for further information or read configure.in."
1064            exit -1;
1065        fi
1066    else
1067        case "$config_signed_triang_algo" in
1068            intmath)
1069                triang_signed=2 ;;
1070            diharmonic)
1071                triang_signed=3 ;;
1072            intmathabs)
1073                triang_signed=5 ;;
1074        esac
1075    fi
1076    AC_DEFINE_UNQUOTED(CONFIG_SIGNED_TRIANG_ALGO, ${triang_signed}, [Define signed triangular wave algorithm to be used.])
1077    
1078    if test "$config_unsigned_triang_algo" = "benchmark"; then
1079        echo -n "benchmarking for the best (unsigned) triangular oscillator algorithm... "
1080        AC_LANG_CPLUSPLUS
1081        AC_TRY_RUN([
1082                #define SIGNED 0
1083                #define SILENT 1
1084                #include "${srcdir}/benchmarks/triang.cpp"
1085            ],
1086            triang_unsigned=0,
1087            triang_unsigned=$?,
1088            triang_unsigned=0
1089        )
1090        if test "$triang_unsigned" = "2"; then
1091            config_unsigned_triang_algo="intmath"
1092            echo "integer math"
1093        elif test "$triang_unsigned" = "3"; then
1094            config_unsigned_triang_algo="diharmonic"
1095            echo "di harmonics"
1096        elif test "$triang_unsigned" = "5"; then
1097            config_unsigned_triang_algo="intmathabs"
1098            echo "integer math using abs()"
1099        else
1100            echo "Benchmark of unsigned triangular wave algorithms failed!"
1101            echo "Maybe you are doing cross compilation? In that case you have to select"
1102            echo "an algorithm manually with './configure --enable-unsigned-triang-algo=...'"
1103            echo "Call './configure --help' for further information or read configure.in."
1104            exit -1;
1105        fi
1106    else
1107        case "$config_unsigned_triang_algo" in
1108            intmath)
1109                triang_unsigned=2 ;;
1110            diharmonic)
1111                triang_unsigned=3 ;;
1112            intmathabs)
1113                triang_unsigned=5 ;;
1114        esac
1115    fi
1116    AC_DEFINE_UNQUOTED(CONFIG_UNSIGNED_TRIANG_ALGO, ${triang_unsigned}, [Define unsigned triangular wave algorithm to be used.])
1117    
1118  AC_LANG_RESTORE  AC_LANG_RESTORE
 echo "$alsa_major.$alsa_minor.$alsa_subminor";  
 AC_DEFINE_UNQUOTED(ALSA_MAJOR,$alsa_major,[Define to the major version number of your Alsa installation.])  
 AC_DEFINE_UNQUOTED(ALSA_MINOR,$alsa_minor,[Define to the minor version number of your Alsa installation.])  
 AC_DEFINE_UNQUOTED(ALSA_SUBMINOR,$alsa_subminor,[Define to the subminor version number of your Alsa installation.])  
1119    
1120    
1121    ###########################################################################
1122    # Create Build Files
1123    
1124  AM_CONFIG_HEADER(config.h)  AM_CONFIG_HEADER(config.h)
1125  AM_INIT_AUTOMAKE(linuxsampler, 0.1)  AM_INIT_AUTOMAKE(linuxsampler, "$LINUXSAMPLER_RELEASE_MAJOR.$LINUXSAMPLER_RELEASE_MINOR.$LINUXSAMPLER_RELEASE_BUILD")
1126    
1127  AC_LANG_CPLUSPLUS  AC_LANG_CPLUSPLUS
 AC_PROG_CXX  
 AM_PROG_LIBTOOL  
1128    
1129  AC_OUTPUT(Makefile src/Makefile)  # some gcc 4.0 versions need -msse for SSE register allocations
1130    if test "$config_asm" = "yes"; then
1131      if test "$def_arch_x86" = 1; then
1132        CXXFLAGS="$CXXFLAGS -msse"
1133      fi
1134    fi
1135    
1136    # autoconf 2.59/libtool 1.5.12 bug? work-around. Without a check like
1137    # this, the dlfcn.h check in am_prog_libtool may fail.
1138    AC_CHECK_HEADER(stdlib.h)
1139    
1140    AC_OUTPUT( \
1141        Makefile \
1142        man/Makefile \
1143        man/linuxsampler.1 \
1144        src/Makefile \
1145        src/db/Makefile \
1146        src/network/Makefile \
1147        src/engines/Makefile \
1148        src/engines/gig/Makefile \
1149        src/engines/common/Makefile \
1150        src/effects/Makefile \
1151        src/common/Makefile \
1152        src/testcases/Makefile \
1153        src/drivers/Makefile \
1154        src/drivers/audio/Makefile \
1155        src/drivers/midi/Makefile \
1156        src/plugins/Makefile \
1157        linuxsampler.spec \
1158        debian/Makefile \
1159        Artwork/Makefile \
1160        scripts/Makefile \
1161        osx/Makefile \
1162        osx/linuxsampler.xcodeproj/Makefile \
1163        Documentation/Makefile \
1164        Documentation/Engines/Makefile \
1165        Documentation/Engines/gig/Makefile \
1166        linuxsampler.pc \
1167        Doxyfile \
1168    )
1169    
1170    # resolve all nested variables in '${config_plugin_dir}'
1171    # (merely for providing a human readable summary below)
1172    while test $config_plugin_dir != `eval echo ${config_plugin_dir}` ; do
1173            config_plugin_dir=`eval echo ${config_plugin_dir}`
1174    done
1175    
1176    
1177    ###########################################################################
1178    # Output All Configuration Options
1179    
1180    echo ""
1181    echo "#####################################################################"
1182    echo "# LinuxSampler Configuration                                        #"
1183    echo "#-------------------------------------------------------------------#"
1184    echo "# Assembly Optimizations: ${config_asm}"
1185    echo "# Development Mode: ${config_dev_mode}"
1186    echo "# Debug Level: ${config_debug_level}"
1187    echo "# Use Exceptions in RT Context: ${config_rt_exceptions}"
1188    echo "# Preload Samples: ${config_preload_samples}"
1189    echo "# Maximum Pitch: ${config_max_pitch} (octaves)"
1190    echo "# Maximum Events: ${config_max_events}"
1191    echo "# Envelope Bottom Level: ${config_eg_bottom} (linear)"
1192    echo "# Envelope Minimum Release Time: ${config_eg_min_release_time} s"
1193    echo "# Streams to be refilled per Disk Thread Cycle: ${config_refill_streams}"
1194    echo "# Minimum Stream Refill Size: ${config_stream_min_refill}"
1195    echo "# Maximum Stream Refill Size: ${config_stream_max_refill}"
1196    echo "# Stream Size: ${config_stream_size}"
1197    echo "# Maximum Disk Streams: ${config_max_streams}"
1198    echo "# Maximum Voices: ${config_max_voices}"
1199    echo "# Default Subfragment Size: ${config_subfragment_size}"
1200    echo "# Default Global Volume Attenuation: ${config_global_attenuation_default}"
1201    echo "# Voice Stealing Algorithm: ${config_voice_steal_algo}"
1202    echo "# Signed Triangular Oscillator Algorithm: ${config_signed_triang_algo}"
1203    echo "# Unsigned Triangular Oscillator Algorithm: ${config_unsigned_triang_algo}"
1204    echo "# SysEx Buffer Size: ${config_sysex_buffer_size} Byte"
1205    echo "# Min. Portamento Time: ${config_portamento_time_min} s"
1206    echo "# Max. Portamento Time: ${config_portamento_time_max} s"
1207    echo "# Default Portamento Time: ${config_portamento_time_default} s"
1208    echo "# Force Filter Usage: ${config_force_filter}"
1209    echo "# Filter Cutoff Minimum: ${config_filter_cutoff_min} Hz"
1210    echo "# Filter Cutoff Maximum: ${config_filter_cutoff_max} Hz"
1211    echo "# Override Filter Cutoff Controller: ${config_override_cutoff_ctrl}"
1212    echo "# Override Filter Resonance Controller: ${config_override_resonance_ctrl}"
1213    echo "# Override Filter Type: ${config_override_filter_type}"
1214    echo "# Assert GS SysEx Checksum: ${config_assert_gs_sysex_checksum}"
1215    echo "# Process Muted Channels: ${config_process_muted_channels}"
1216    echo "# Process All-Notes-Off MIDI message: ${config_process_all_notes_off}"
1217    echo "# Interpolate Volume: ${config_interpolate_volume}"
1218    echo "# Instruments database support: ${config_instruments_db}"
1219    if test "$config_instruments_db" = "yes"; then
1220    echo "# Instruments DB default location: ${config_default_instruments_db_file}"
1221    fi
1222    echo "# Plugin Path: ${config_plugin_dir}"
1223    echo "#-------------------------------------------------------------------#"
1224    echo "# Read './configure --help' or file 'configure.in' for details.     #"
1225    echo "#####################################################################"
1226    echo ""
1227    echo "Good. Now type 'make' to compile, followed by 'make install' as root."
1228    echo ""

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