/[svn]/linuxsampler/trunk/configure.in
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revision 12 by schoenebeck, Sun Nov 16 19:01:50 2003 UTC revision 1852 by schoenebeck, Sun Mar 1 22:22:03 2009 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=1.10cvs
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    AC_LIBTOOL_WIN32_DLL
43    AM_PROG_LIBTOOL
44    
45    AC_SUBST(SHLIB_VERSION_ARG)
46    AC_SUBST(SHARED_VERSION_INFO)
47    
48  AC_C_BIGENDIAN  AC_C_BIGENDIAN
49  AC_CANONICAL_SYSTEM  AC_CANONICAL_SYSTEM
50    
51  echo -n "Checking whether x86 architecture... "  AC_SUBST(target)
52    AC_SUBST(target_alias)
53    AC_SUBST(target_cpu)
54    AC_SUBST(target_os)
55    AC_SUBST(target_vendor)
56    
57    PKG_PROG_PKG_CONFIG
58    
59    ###########################################################################
60    # General Checks
61    
62    AC_MSG_CHECKING([whether x86 architecture])
63  def_arch_x86=0  def_arch_x86=0
64  case $target_cpu in  case $target_cpu in
65    "i386" | "i486" | "i586" | "i686" | "i786")    "i386" | "i486" | "i586" | "i686" | "i786" | "x86_64")
66      echo "yes"      echo "yes"
67      def_arch_x86=1;;      def_arch_x86=1;;
68    *)    *)
# Line 13  case $target_cpu in Line 70  case $target_cpu in
70  esac  esac
71  AC_DEFINE_UNQUOTED(ARCH_X86,$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.])
72    
73    # determine the right gcc switch for CPU specific optimizations
74    # (only if the user did not provide one)
75    CXX_CPU_SWITCH=
76    if ! echo "X $CXXFLAGS " | grep -q -- " \(-march=\|-mcpu=\|-mtune=\|-arch=\)" ; then
77      if test "$def_arch_x86" = 1 -a "$target_cpu" != "x86_64"; then
78        CXX_CPU_SWITCH="-march=$target_cpu"
79      elif test "$target_cpu" = "ppc"; then
80        CXX_CPU_SWITCH="-arch=$target_cpu"
81      fi
82    fi
83    AC_SUBST([CXX_CPU_SWITCH])
84    
85    # check if we're on MS Windows
86    AC_CHECK_HEADERS(
87        mmsystem.h,
88        have_windows=1,
89        have_windows=0
90    )
91    AM_CONDITIONAL(HAVE_WINDOWS, test $have_windows = "1")
92    
93    AC_MSG_CHECKING([whether UNIX98 compatible])
94    AC_LANG_SAVE
95    AC_LANG_C
96    AC_TRY_RUN([
97    #ifndef _GNU_SOURCE
98    #define _GNU_SOURCE 1
99    #endif
100    #include <features.h>
101    void main(void) {
102    #if _XOPEN_SOURCE >= 500
103    exit(0); /* UNIX98 compatible */
104    #else
105    exit(-1); /* not UNIX98 compatible */
106    #endif
107    }
108    ],
109    have_unix98="yes",
110    have_unix98="no",
111    have_unix98="no"
112    )
113    AC_LANG_RESTORE
114    AC_MSG_RESULT([$have_unix98])
115    if test "$have_unix98" = "no" -a "have_windows" = "0"; then
116        if test "x$HAVE_UNIX98" = "x"; then
117            echo "LinuxSampler only runs on UNIX98 compatible systems, which is mandatory for"
118            echo "pthread_mutexattr_settype() call in Mutex.cpp. You may want to run
119            echo "./configure with environment variable HAVE_UNIX98=1 in case you think you
120            echo "have a UNIX98 compatible system."
121            exit -1;
122        fi
123    fi
124    
125    # check for <features.h>
126    AC_CHECK_HEADERS(features.h)
127    
128    # test for POSIX thread library
129    m4_ifdef([m4_include(m4/pthread.m4)],,
130                 [sinclude([m4/pthread.m4])])
131    ACX_PTHREAD
132    LIBS="$PTHREAD_LIBS $LIBS"
133    CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
134    CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS"
135    CC="$PTHREAD_CC"
136    
137    # check for a bug in NPTL-enabled glibc
138    # (see Gentoo bug report #194076)
139    AC_ARG_ENABLE(nptl-bug-check,
140      [  --disable-nptl-bug-check
141                              Disable check for a bug in certain NPTL-enabled
142                              glibc versions that caused crashs.],
143      [config_check_nptl_bug="$enableval"],
144      [config_check_nptl_bug="yes"]
145    )
146    if test "$config_check_nptl_bug" = "yes"; then
147        m4_ifdef([m4_include(m4/nptl_bug.m4)],,
148                 [sinclude([m4/nptl_bug.m4])])
149        ACX_NPTL_GLIBC_BUG([
150            echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
151            echo "You seem to have a buggy PTHREAD library! LinuxSampler would"
152            echo "probably crash due to this. Please report us the system you are"
153            echo "using and/or file a bug report to the bug tracking system of"
154            echo "your distribution."
155            echo "If you have a NPTL-enabled glibc AND it was compiled for TLS as"
156            echo "well, you can try to circumvent this problem for now by setting"
157            echo "the environment variable LD_ASSUME_KERNEL=\"2.4.1\" , which"
158            echo "should cause this test to pass."
159            echo "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!"
160            AC_MSG_ERROR([possibly NPTL glibc bug detected])
161        ])
162    else
163        echo "NPTL glibc bug check disabled"
164    fi
165    
166    # FIXME: this is actually a dependency of libgig, not of LS directly, why
167    # isn't it hidden by libgig?
168    AC_CHECK_HEADERS(uuid/uuid.h)
169    AC_SEARCH_LIBS(uuid_generate, uuid)
170    
171    
172    
173    ###########################################################################
174    # Checks for available audio and MIDI systems / drivers
175    # (we throw an error if there's not at least one system for audio output and MIDI input available)
176    
177    have_midi_input_driver="false"
178    have_audio_output_driver="false"
179    
180    # ALSA
181    AC_ARG_ENABLE(alsa-driver,
182      [  --disable-alsa-driver
183                              Disable support for the Advanced Linux Sound
184                              Architecture (ALSA).],
185      [config_alsa_driver="$enableval"],
186      [config_alsa_driver="yes"]
187    )
188    have_alsa=0
189    if test "$config_alsa_driver" = "yes"; then
190        AC_CHECK_HEADER(alsa/asoundlib.h,
191            AC_CHECK_LIB(asound, main,
192                                     have_alsa=1
193                                     ,
194                                     have_alsa=0
195                        )
196                        ,
197                        have_alsa=0
198        )
199        if test "$have_alsa" = "1"; then
200            have_midi_input_driver="true"
201            have_audio_output_driver="true";
202        fi
203    
204        echo -n "checking Alsa version... "
205        AC_LANG_SAVE
206        AC_LANG_C
207        AC_TRY_RUN([
208            #include <alsa/asoundlib.h>
209            void main(void) {
210                /* ensure backward compatibility */
211                #if !defined(SND_LIB_MAJOR) && defined(SOUNDLIB_VERSION_MAJOR)
212                #define SND_LIB_MAJOR SOUNDLIB_VERSION_MAJOR
213                #endif
214                exit(SND_LIB_MAJOR);
215            }
216        ],
217        alsa_major=0,
218        alsa_major=$?,
219        alsa_major=0
220        )
221        AC_TRY_RUN([
222            #include <alsa/asoundlib.h>
223            void main(void) {
224                /* ensure backward compatibility */
225                #if !defined(SND_LIB_MINOR) && defined(SOUNDLIB_VERSION_MINOR)
226                #define SND_LIB_MINOR SOUNDLIB_VERSION_MINOR
227                #endif
228                exit(SND_LIB_MINOR);
229            }
230        ],
231        alsa_minor=0,
232        alsa_minor=$?,
233        alsa_minor=0
234        )
235        AC_TRY_RUN([
236            #include <alsa/asoundlib.h>
237            void main(void) {
238                /* ensure backward compatibility */
239                #if !defined(SND_LIB_SUBMINOR) && defined(SOUNDLIB_VERSION_SUBMINOR)
240                #define SND_LIB_SUBMINOR SOUNDLIB_VERSION_SUBMINOR
241                #endif
242                exit(SND_LIB_SUBMINOR);
243            }
244        ],
245        alsa_subminor=0,
246        alsa_subminor=$?,
247        alsa_subminor=0
248        )
249        AC_LANG_RESTORE
250        echo "$alsa_major.$alsa_minor.$alsa_subminor";
251        AC_DEFINE_UNQUOTED(ALSA_MAJOR,$alsa_major,[Define to the major version number of your Alsa installation.])
252        AC_DEFINE_UNQUOTED(ALSA_MINOR,$alsa_minor,[Define to the minor version number of your Alsa installation.])
253        AC_DEFINE_UNQUOTED(ALSA_SUBMINOR,$alsa_subminor,[Define to the subminor version number of your Alsa installation.])
254    else
255        echo "ALSA support disabled by configure script parameter"
256    fi
257    AM_CONDITIONAL(HAVE_ALSA, test $have_alsa = "1")
258    AC_DEFINE_UNQUOTED(HAVE_ALSA,$have_alsa,[Define to 1 if you have ALSA installed.])
259    
260    # JACK
261    AC_ARG_ENABLE(jack-driver,
262      [  --disable-jack-driver
263                              Disable support for the Jack Audio Connection Kit
264                              (JACK).],
265      [config_jack_driver="$enableval"],
266      [config_jack_driver="yes"]
267    )
268    have_jack=0
269    if test "$config_jack_driver" = "yes"; then
270        PKG_CHECK_MODULES(JACK, jack, have_jack=1, have_jack=0)
271        if test $have_jack = "1"; then
272            AC_SUBST(JACK_LIBS)
273            AC_SUBST(JACK_CFLAGS)
274            linuxsampler_save_LIBS=$LIBS
275            LIBS="$JACK_LIBS $LIBS"
276            AC_CHECK_FUNCS(jack_client_name_size jack_client_open)
277            LIBS=$linuxsampler_save_LIBS
278            have_audio_output_driver="true";
279        fi
280    else
281        echo "JACK support disabled by configure script parameter"
282    fi
283    AM_CONDITIONAL(HAVE_JACK, test $have_jack = "1")
284    AC_DEFINE_UNQUOTED(HAVE_JACK,$have_jack,[Define to 1 if you have JACK installed.])
285    
286    # JACK MIDI
287    have_jack_midi=0
288    if test $have_jack = "1"; then
289        linuxsampler_save_CFLAGS=$CFLAGS
290        linuxsampler_save_LIBS=$LIBS
291        CFLAGS="$JACK_CFLAGS $CFLAGS"
292        LIBS="$JACK_LIBS $LIBS"
293        AC_CHECK_HEADER(jack/midiport.h, have_jack_midi=1, have_jack_midi=0)
294        if test $have_jack_midi = "1"; then
295            AC_CHECK_FUNCS(jack_midi_get_event_count)
296            AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <jack/midiport.h>]], [[
297                jack_midi_clear_buffer(0, 0);
298            ]])], [AC_DEFINE(JACK_MIDI_FUNCS_NEED_NFRAMES, 1,
299                      [Define to 1 if you have the old jack midi functions that need an nframes argument.])])
300            have_midi_input_driver="true"
301        fi
302        CFLAGS=$linuxsampler_save_CFLAGS
303        LIBS=$linuxsampler_save_LIBS
304    fi
305    AM_CONDITIONAL(HAVE_JACK_MIDI, test $have_jack_midi = "1")
306    AC_DEFINE_UNQUOTED(HAVE_JACK_MIDI, $have_jack_midi,
307                       [Define to 1 if you have JACK with MIDI support installed.])
308    
309    # ARTS
310    AC_ARG_ENABLE(arts-driver,
311      [  --disable-arts-driver
312                              Disable support for the Analogue Realtime System
313                              (aRts).],
314      [config_arts_driver="$enableval"],
315      [config_arts_driver="yes"]
316    )
317    have_arts=0
318    if test "$config_arts_driver" = "yes"; then
319        m4_ifdef([m4_include(m4/arts.m4)],,
320                 [sinclude([m4/arts.m4])])
321        AM_PATH_ARTS(0.9.5, have_arts=1, have_arts=0)
322        if test "$have_arts" = "1"; then
323            have_audio_output_driver="true"
324        fi
325    else
326        echo "ARTS support disabled by configure script parameter"
327    fi
328    AM_CONDITIONAL(HAVE_ARTS, test "$have_arts" = "1")
329    AC_DEFINE_UNQUOTED(HAVE_ARTS,$have_arts,[Define to 1 if you have aRts installed.])
330    
331    # ASIO AUDIO (Win32)
332    AC_ARG_ENABLE(asiosdk-dir,
333      [  --enable-asiosdk-dir
334                              Directory where the ASIO SDK is located, this automatically
335                              enables the compilation of the ASIO audio output driver.],
336      [config_asiosdk_dir="${enableval}"],
337      [config_asiosdk_dir="."]
338    )
339    AC_SUBST(config_asiosdk_dir)
340    
341    AC_ARG_ENABLE(asio-driver,
342      [  --disable-asio-driver
343                              Disable support for the Windows ASIO driver.],
344      [config_asio_driver="$enableval"],
345      [config_asio_driver="yes"]
346    )
347    have_asio=0
348    ASIOSDK_BASEDIR=
349    if test "$config_asio_driver" = "yes"; then
350        asiosdk_headerfile=$config_asiosdk_dir/ASIOSDK2/common/asio.h
351        echo -n "checking for ASIO headerfile: $asiosdk_headerfile ...."
352        if test -e $asiosdk_headerfile ; then
353            echo yes
354            have_asio=1
355            ASIOSDK_BASEDIR="$config_asiosdk_dir"
356        else
357            echo no
358            have_asio=0
359        fi
360        if test "$have_asio" = "1"; then
361            have_audio_output_driver="true"
362        fi
363    else
364        echo "Windows ASIO support disabled by configure script parameter"
365    fi
366    AC_SUBST(ASIOSDK_BASEDIR)
367    AM_CONDITIONAL(HAVE_ASIO, test $have_asio = "1")
368    AC_DEFINE_UNQUOTED(HAVE_ASIO,$have_asio,[Define to 1 if you have ASIO installed.])
369    
370    # MidiShare (Linux, OS X, Windows)
371    AC_ARG_ENABLE(midishare-driver,
372      [  --disable-midishare-driver
373                              Disable support for the MidiShare system.],
374      [config_midishare_driver="$enableval"],
375      [config_midishare_driver="yes"]
376    )
377    have_midishare=0
378    if test "$config_midishare_driver" = "yes"; then
379        AC_CHECK_HEADER(MidiShare.h,
380            AC_CHECK_LIB(MidiShare, MidiCountEvs,
381                                    have_midishare=1,
382                                    have_midishare=0
383                        )
384                        ,
385                        have_midishare=0
386        )
387        if test "$have_midishare" = "1"; then
388            have_midi_input_driver="true"
389        fi
390    else
391        echo "MidiShare support disabled by configure script parameter"
392    fi
393    AM_CONDITIONAL(HAVE_MIDISHARE, test $have_midishare = "1")
394    AC_DEFINE_UNQUOTED(HAVE_MIDISHARE,$have_midishare,[Define to 1 if you have MidiShare installed.])
395    
396    # CoreMIDI (OS X)
397    AC_ARG_ENABLE(coremidi-driver,
398      [  --disable-coremidi-driver
399                              Disable support for the Apple CoreMIDI system.],
400      [config_coremidi_driver="$enableval"],
401      [config_coremidi_driver="yes"]
402    )
403    have_coremidi=0
404    if test "$config_coremidi_driver" = "yes"; then
405        AC_CHECK_HEADER(CoreMIDI/CoreMIDI.h,
406            have_coremidi=1,
407            have_coremidi=0
408        )
409        if test "$have_coremidi" = "1"; then
410            have_midi_input_driver="true"
411        fi
412    else
413        echo "CoreMIDI support disabled by configure script parameter"
414    fi
415    AM_CONDITIONAL(HAVE_COREMIDI, test $have_coremidi = "1")
416    AC_DEFINE_UNQUOTED(HAVE_COREMIDI,$have_coremidi,[Define to 1 if you have CoreMIDI installed.])
417    
418    # CoreAudio (OS X)
419    AC_ARG_ENABLE(coreaudio-driver,
420      [  --disable-coreaudio-driver
421                              Disable support for the Apple CoreAudio system.],
422      [config_coreaudio_driver="$enableval"],
423      [config_coreaudio_driver="yes"]
424    )
425    have_coreaudio=0
426    if test "$config_coreaudio_driver" = "yes"; then
427        AC_CHECK_HEADER(CoreAudio/CoreAudio.h,
428            have_coreaudio=1,
429            have_coreaudio=0
430        )
431        if test "$have_coreaudio" = "1"; then
432            have_audio_output_driver="true"
433        fi
434    else
435        echo "CoreAudio support disabled by configure script parameter"
436    fi
437    AM_CONDITIONAL(HAVE_COREAUDIO, test $have_coreaudio = "1")
438    AC_DEFINE_UNQUOTED(HAVE_COREAUDIO,$have_coreaudio,[Define to 1 if you have CoreAudio installed.])
439    
440    # MME MIDI (Win32)
441    AC_ARG_ENABLE(mmemidi-driver,
442      [  --disable-mmemidi-driver
443                              Disable support for the Windows MME MIDI system.],
444      [config_mmemidi_driver="$enableval"],
445      [config_mmemidi_driver="yes"]
446    )
447    have_mmemidi=0
448    if test "$config_mmemidi_driver" = "yes"; then
449        AC_CHECK_HEADERS(mmsystem.h,
450            have_mmemidi=1,
451            have_mmemidi=0
452        )
453        if test "$have_mmemidi" = "1"; then
454            have_midi_input_driver="true"
455        fi
456    else
457        echo "MME MIDI support disabled by configure script parameter"
458    fi
459    AM_CONDITIONAL(HAVE_MME_MIDI, test $have_mmemidi = "1")
460    AC_DEFINE_UNQUOTED(HAVE_MME_MIDI,$have_mmemidi,[Define to 1 if you have MME MIDI installed.])
461    
462    
463    # DSSI
464    AC_CHECK_HEADERS(dssi.h,
465            have_dssi=1,
466            have_dssi=0)
467    AM_CONDITIONAL(HAVE_DSSI, test $have_dssi = "1")
468    
469    # LV2
470    PKG_CHECK_MODULES(LV2, lv2core, have_lv2=1, have_lv2=0)
471    if test $have_lv2 = "0"; then
472        AC_CHECK_HEADER(lv2.h, have_lv2=1, have_lv2=0)
473    fi
474    AM_CONDITIONAL(HAVE_LV2, test $have_lv2 = "1")
475    
476    # VST
477    AC_ARG_ENABLE(vstsdk-dir,
478      [  --enable-vstsdk-dir
479                              Directory where the VST SDK is located.
480                              This automatically enables the compilation
481                              of the VST plugin.],
482      [VSTSDK_DIR="${enableval}"],
483      [VSTSDK_DIR=]
484    )
485    AC_SUBST(VSTSDK_DIR)
486    AM_CONDITIONAL(HAVE_VST, test "x$VSTSDK_DIR" != "x")
487    
488    # AU
489    AC_CHECK_HEADERS(AudioUnit/AudioUnit.h,
490            have_au=1,
491            have_au=0)
492    AM_CONDITIONAL(HAVE_AU, test $have_au = "1")
493    AM_CONDITIONAL(HAVE_AUFLAGS, test test "$AUFLAGS" != "")
494    
495    
496    # have we found at least one MIDI input and one audio output driver ?
497    if test "$have_midi_input_driver" = "false"; then
498        echo "No supported MIDI input system found!"
499        echo "Sorry, LinuxSampler only supports the following MIDI drivers at the moment:"
500        echo "ALSA, JACK, MIDIShare, CoreMIDI, MME."
501        echo "If you think you have one of those available on your system, make sure you"
502        echo "also have the respective development (header) files installed."
503        exit -1;
504    fi
505    if test "$have_audio_output_driver" = "false"; then
506        echo "No supported audio output system found!"
507        echo "Sorry, LinuxSampler only supports ALSA, JACK, ARTS and ASIO as audio output"
508        echo "driver at the moment!"
509        exit -1;
510    fi
511    
512    
513    
514    ###########################################################################
515    # Checks for various DLL libraries
516    
517    # Check presence of libgig
518    libgig_version="3.2.1"
519    PKG_CHECK_MODULES(GIG, gig >= $libgig_version, HAVE_GIG=true, HAVE_GIG=false)
520    if test "$HAVE_GIG" = "false"; then
521        echo "Required libgig version not found!"
522        echo "You need to have libgig version ${libgig_version} installed!"
523        exit -1;
524    else
525        echo "yes, found libgig $libgig_version"
526    fi
527    AC_SUBST(GIG_CFLAGS)
528    AC_SUBST(GIG_LIBS)
529    
530    # Instruments DB feature (requires SQLite 3.3)
531    AC_ARG_ENABLE(instruments-db,
532      [  --disable-instruments-db
533                              Disable compilation of the sampler's instruments
534                              database feature. You need to have SQLite 3.3
535                              or younger installed for this feature.],
536      [config_instruments_db="$enableval"],
537      [config_instruments_db="yes"]
538    )
539    HAVE_SQLITE3=0;
540    if test "$config_instruments_db" = "yes"; then
541        # Check presence of sqlite3
542        sqlite_version="3.3"
543        PKG_CHECK_MODULES(SQLITE3, sqlite3 >= $sqlite_version, HAVE_SQLITE3=true, HAVE_SQLITE3=false)
544        AC_SUBST(SQLITE3_LIBS)
545        AC_SUBST(SQLITE3_CFLAGS)
546        if test $HAVE_SQLITE3 = false; then
547            HAVE_SQLITE3=0
548            config_instruments_db="no"
549            echo "*** Required sqlite version not found!"
550            echo "*** You need to have sqlite version ${sqlite_version} or higher"
551            echo "*** for instruments database support to be enabled."
552            echo "*** Support for instruments DB will be disabled!"
553        else
554            HAVE_SQLITE3=1
555        fi
556    else
557        echo "Instruments DB feature disabled by configure script parameter"
558    fi
559    AM_CONDITIONAL(HAVE_SQLITE3, test $HAVE_SQLITE3 = 1)
560    AC_DEFINE_UNQUOTED(HAVE_SQLITE3,$HAVE_SQLITE3,[Define to 1 if you want the instruments DB feature and have SQLITE3 installed.])
561    
562    
563    
564    ###########################################################################
565    # Handle Configuration Options
566    
567    # TODO: should we use AC_ARG_VAR(variable, description) instead?
568    
569    AC_ARG_ENABLE(asm,
570      [  --disable-asm
571                              Enable hand-crafted assembly optimizations
572                              (default=on). LinuxSampler provides CPU specific
573                              assembly optimizations. This is currently limited
574                              to just enter a fast (denormal) FPU mode on x86
575                              platforms. There are currently no synthesis core
576                              assembly optimizations anymore since LS 0.4.0],
577      [config_asm="$enableval"],
578      [config_asm="yes"]
579    )
580    if test "$config_asm" = "yes"; then
581      AC_DEFINE_UNQUOTED(CONFIG_ASM, 1, [Define to 1 if you want to enable asm optimizations.])
582    fi
583    
584    AC_ARG_ENABLE(dev-mode,
585      [  --enable-dev-mode
586                              Enable development mode (default=off). In that mode
587                              we do some extra sanity checks here and there.
588                              This helps to spot possible problems, but reduces
589                              efficiency a bit],
590      [config_dev_mode="$enableval"],
591      [config_dev_mode="no"]
592    )
593    if test "$config_dev_mode" = "yes"; then
594      AC_DEFINE_UNQUOTED(CONFIG_DEVMODE, 1, [Define to 1 if you want to enable development mode.])
595    fi
596    
597    AC_ARG_ENABLE(debug-level,
598      [  --enable-debug-level
599                              Specify verbosity of console messages (default=1).
600                              The higher the value, the higher will be verbosity.
601                              A value of 0 means no console output at all.
602                              There's not really an upper limit but the usual
603                              level of all messages is currently somewhere less
604                              than 10.],
605      [config_debug_level="${enableval}"],
606      [config_debug_level="1"]
607    )
608    AC_DEFINE_UNQUOTED(CONFIG_DEBUG_LEVEL, $config_debug_level, [Define console verbosity.])
609    
610    AC_ARG_ENABLE(rt-exceptions,
611      [  --enable-rt-exceptions
612                              Enable exceptions in the realtime thread
613                              (default=no). If this is enabled, exceptions will
614                              be thrown on critical errors in the realtime
615                              context as well. Otherwise if disabled
616                              segmentation faults will be forced by the
617                              application on critical errors.],
618      [config_rt_exceptions="$enableval"],
619      [config_rt_exceptions="no"]
620    )
621    if test "$config_rt_exceptions" = "yes"; then
622      AC_DEFINE_UNQUOTED(CONFIG_RT_EXCEPTIONS, 1, [Define to 1 to allow exceptions in the realtime context.])
623    fi
624    
625    AC_ARG_ENABLE(pthread-testcancel,
626      [  --enable-pthread-testcancel
627                              Enable pthread_testcancel() calls and avoid asynchronous
628                              cancel of pthreads (default=no).],
629      [config_pthread_testcancel="$enableval"],
630      [config_pthread_testcancel="no"]
631    )
632    if test "$config_pthread_testcancel" = "yes"; then
633      AC_DEFINE_UNQUOTED(CONFIG_PTHREAD_TESTCANCEL, 1, [Define to 1 to enable pthread_testcancel() calls.])
634    fi
635    
636    AC_ARG_ENABLE(preload-samples,
637      [  --enable-preload-samples
638                              Due to seeking and latency issues with hard drives
639                              we have to cache a small part of samples' head in
640                              RAM (default=32768). The higher this value the
641                              more memory will be occupied for each sample, but
642                              the safer this will be in regards of possible
643                              droputs. A 'good' value depends on the running
644                              system and usage dependant factors.],
645      [config_preload_samples="${enableval}"],
646      [config_preload_samples="32768"]
647    )
648    AC_DEFINE_UNQUOTED(CONFIG_PRELOAD_SAMPLES, $config_preload_samples, [Define amount of sample points to be cached in RAM.])
649    
650    AC_ARG_ENABLE(max-pitch,
651      [  --enable-max-pitch
652                              Specify the maximum allowed pitch value in octaves
653                              (default=4). To lower memory usage you might want
654                              set a smaller value.],
655      [config_max_pitch="${enableval}"],
656      [config_max_pitch="4"]
657    )
658    AC_DEFINE_UNQUOTED(CONFIG_MAX_PITCH, $config_max_pitch, [Define max. allowed pitch.])
659    
660    AC_ARG_ENABLE(max-events,
661      [  --enable-max-events
662                              Specify the maximum allowed amount of events to be
663                              processed per fragment (default=1024).],
664      [config_max_events="${enableval}"],
665      [config_max_events="1024"]
666    )
667    AC_DEFINE_UNQUOTED(CONFIG_MAX_EVENTS_PER_FRAGMENT, $config_max_events, [Define max. allowed events per fragment.])
668    
669    AC_ARG_ENABLE(eg-bottom,
670      [  --enable-eg-bottom
671                              Bottom limit of envelope generators
672                              (default=0.001). Certain kinds of curve types like
673                              exponential curves converge against 0 but never
674                              reach 0. So we have to define a certain low value
675                              after which we should consider all smaller values
676                              to be 'almost zero'. The smaller this value, the
677                              longer will voices survive in EG's release stage
678                              and thus waste voices. If this value is too high
679                              will cause click sounds though.],
680      [config_eg_bottom="${enableval}"],
681      [config_eg_bottom="0.001"]
682    )
683    AC_DEFINE_UNQUOTED(CONFIG_EG_BOTTOM, $config_eg_bottom, [Define bottom limit of envelopes.])
684    
685    AC_ARG_ENABLE(eg-min-release-time,
686      [  --enable-eg-min-release-time
687                              Specify the lowest allowed release time in seconds
688                              (default=0.0025). This value will also be used to
689                              ramp down voices on voice stealing. This value
690                              should always be less than the period time of the
691                              used audio driver, as in case of voice stealing
692                              the killed voice needs to be completely ramped
693                              down in the same fragment.],
694      [config_eg_min_release_time="${enableval}"],
695      [config_eg_min_release_time="0.0025"]
696    )
697    AC_DEFINE_UNQUOTED(CONFIG_EG_MIN_RELEASE_TIME, $config_eg_min_release_time, [Define min. release time.])
698    
699    AC_ARG_ENABLE(refill-streams,
700      [  --enable-refill-streams
701                              Number of streams that should be refilled in each
702                              disk thread cycle (default=4).],
703      [config_refill_streams="${enableval}"],
704      [config_refill_streams="4"]
705    )
706    AC_DEFINE_UNQUOTED(CONFIG_REFILL_STREAMS_PER_RUN, $config_refill_streams, [Define amount of streams to be refilled per cycle.])
707    
708    AC_ARG_ENABLE(stream-min-refill,
709      [  --enable-stream-min-refill
710                              Minimum refill size for disk streams (default=1024).
711                              The disk thread will go to sleep for a while if no
712                              stream had to be refilled more than this value in
713                              a disk thread cycle.],
714      [config_stream_min_refill="${enableval}"],
715      [config_stream_min_refill="1024"]
716    )
717    AC_DEFINE_UNQUOTED(CONFIG_STREAM_MIN_REFILL_SIZE, $config_stream_min_refill, [Define min. stream refill size.])
718    
719    AC_ARG_ENABLE(stream-max-refill,
720      [  --enable-stream-max-refill
721                              Maximum refill size for disk streams
722                              (default=65536). The disk thread will refill
723                              each stream only by a size of this value per
724                              disk thread cycle.],
725      [config_stream_max_refill="${enableval}"],
726      [config_stream_max_refill="65536"]
727    )
728    AC_DEFINE_UNQUOTED(CONFIG_STREAM_MAX_REFILL_SIZE, $config_stream_max_refill, [Define max. stream refill size.])
729    
730    AC_ARG_ENABLE(stream-size,
731      [  --enable-stream-size
732                              Size of each stream's ring buffer in sample points
733                              (default=262144).],
734      [config_stream_size="${enableval}"],
735      [config_stream_size="262144"]
736    )
737    AC_DEFINE_UNQUOTED(CONFIG_STREAM_BUFFER_SIZE, $config_stream_size, [Define each stream's ring buffer size.])
738    
739    AC_ARG_ENABLE(max-streams,
740      [  --enable-max-streams
741                              Initial maximum amount of disk streams
742                              (default=90). This value can be changed at
743                              runtime. It should always be higher than the
744                              maximum amount of voices.],
745      [config_max_streams="${enableval}"],
746      [config_max_streams="90"]
747    )
748    AC_DEFINE_UNQUOTED(CONFIG_DEFAULT_MAX_STREAMS, $config_max_streams, [Define initial max. streams.])
749    
750    AC_ARG_ENABLE(max-voices,
751      [  --enable-max-voices
752                              Initial maximum amount of voices (default=64).
753                              This value can be changed at runtime. It should
754                              always be lower than the maximum amount of disk
755                              streams.],
756      [config_max_voices="${enableval}"],
757      [config_max_voices="64"]
758    )
759    AC_DEFINE_UNQUOTED(CONFIG_DEFAULT_MAX_VOICES, $config_max_voices, [Define initial max. voices.])
760    
761    AC_ARG_ENABLE(subfragment-size,
762      [  --enable-subfragment-size
763                              Every audio fragment will be splitted into
764                              subfragments. Where each subfragment renders
765                              audio with constant synthesis parameters. This is
766                              done for efficiency reasons. This parameter
767                              defines the default size of a subfragment in
768                              sample points. A large value means less CPU time
769                              whereas a low value means better audio quality
770                              (default=32).],
771      [config_subfragment_size="${enableval}"],
772      [config_subfragment_size="32"]
773    )
774    AC_DEFINE_UNQUOTED(CONFIG_DEFAULT_SUBFRAGMENT_SIZE, $config_subfragment_size, [Define default subfragment size (in sample points).])
775    
776    AC_ARG_ENABLE(global-attenuation-default,
777      [  --enable-global-attenuation-default
778                              To prevent clipping all samples will be lowered
779                              in amplitude by this given default factor (can
780                              be overridden at runtime).
781                              (default=0.35)],
782      [config_global_attenuation_default="${enableval}"],
783      [config_global_attenuation_default="0.35"]
784    )
785    AC_DEFINE_UNQUOTED(CONFIG_GLOBAL_ATTENUATION_DEFAULT, $config_global_attenuation_default, [Define default global volume attenuation (as floating point factor).])
786    
787    AC_ARG_ENABLE(voice-steal-algo,
788      [  --enable-voice-steal-algo
789                              Voice stealing algorithm to be used. Currently
790                              available options:
791                                none:
792                                  Disable voice stealing completely.
793                                oldestvoiceonkey (default):
794                                  Try to kill a voice on the same key first,
795                                  if no success, proceed with the oldest key.
796                                oldestkey:
797                                  Try to kill a voice from the oldest active
798                                  key.],
799      [ if test ! "(" "${enableval}" = "none" \
800                  -o "${enableval}" = "oldestvoiceonkey" \
801                  -o "${enableval}" = "oldestkey" ")" ; then
802          AC_MSG_ERROR([Unknown voice stealing algorithm for parameter --enable-voice-steal-algo])
803        else
804          config_voice_steal_algo="${enableval}"
805        fi
806      ],
807      [config_voice_steal_algo="oldestvoiceonkey"]
808    )
809    AC_DEFINE_UNQUOTED(CONFIG_VOICE_STEAL_ALGO, voice_steal_algo_${config_voice_steal_algo}, [Define voice stealing algorithm to be used.])
810    
811    AC_ARG_ENABLE(sysex-buffer-size,
812      [  --enable-sysex-buffer-size
813                              System Exclusive Message buffer size in kB
814                              (default=2048).],
815      [config_sysex_buffer_size="${enableval}"],
816      [config_sysex_buffer_size="2048"]
817    )
818    AC_DEFINE_UNQUOTED(CONFIG_SYSEX_BUFFER_SIZE, $config_sysex_buffer_size, [Define SysEx buffer size.])
819    
820    AC_ARG_ENABLE(force-filter,
821      [  --enable-force-filter
822                              If enabled will force filter to be used even if
823                              no usage was define in instrument patch files.
824                              (default=no).],
825      [config_force_filter="$enableval"],
826      [config_force_filter="no"]
827    )
828    if test "$config_force_filter" = "yes"; then
829      AC_DEFINE_UNQUOTED(CONFIG_FORCE_FILTER, 1, [Define to 1 to force filter usage.])
830    fi
831    
832    AC_ARG_ENABLE(filter-cutoff-min,
833      [  --enable-filter-cutoff-min
834                              Minimum filter cutoff frequency in Hz
835                              (default=100.0).],
836      [config_filter_cutoff_min="${enableval}"],
837      [config_filter_cutoff_min="100.0"]
838    )
839    AC_DEFINE_UNQUOTED(CONFIG_FILTER_CUTOFF_MIN, ${config_filter_cutoff_min}f, [Define min. filter cutoff frequency.])
840    
841    AC_ARG_ENABLE(filter-cutoff-max,
842      [  --enable-filter-cutoff-max
843                              Maximum filter cutoff frequency in Hz
844                              (default=10000.0).],
845      [config_filter_cutoff_max="${enableval}"],
846      [config_filter_cutoff_max="10000.0"]
847    )
848    AC_DEFINE_UNQUOTED(CONFIG_FILTER_CUTOFF_MAX, ${config_filter_cutoff_max}f, [Define max. filter cutoff frequency.])
849    
850    AC_ARG_ENABLE(override-cutoff-ctrl,
851      [  --enable-override-cutoff-ctrl
852                              Override filter cutoff MIDI controller (default=no).
853                              Note: you have to define the MIDI controller number
854                              here, it's not a boolean parameter type! If this
855                              option is used, controller number given by
856                              instrument patch will be ignored and instead this
857                              supplied value will be used.],
858      [config_override_cutoff_ctrl="${enableval}"],
859      [config_override_cutoff_ctrl="no"]
860    )
861    if test ! "$config_override_cutoff_ctrl" = "no"; then
862      AC_DEFINE_UNQUOTED(CONFIG_OVERRIDE_CUTOFF_CTRL, $config_override_cutoff_ctrl, [Define to a MIDI controller number to override cutoff control.])
863    fi
864    
865    AC_ARG_ENABLE(override-resonance-ctrl,
866      [  --enable-override-resonance-ctrl
867                              Override filter resonance MIDI controller
868                              (default=no). Note: you have to define the MIDI
869                              controller number here, it's not a boolean
870                              parameter type! If this option is used, controller
871                              number given by instrument patch will be ignored
872                              and instead this supplied value will be used.],
873      [config_override_resonance_ctrl="${enableval}"],
874      [config_override_resonance_ctrl="no"]
875    )
876    if test ! "$config_override_resonance_ctrl" = "no"; then
877      AC_DEFINE_UNQUOTED(CONFIG_OVERRIDE_RESONANCE_CTRL, $config_override_resonance_ctrl, [Define to a MIDI controller number to override resonance control.])
878    fi
879    
880    AC_ARG_ENABLE(override-filter-type,
881      [  --enable-override-filter-type
882                              Override filter type (default=no). Options:
883                              hp: for highpass
884                              bp: for bandpass
885                              br: for bandreject
886                              lp: for lowpass
887                              lpt: for lowpass turbo],
888      [ if   test "${enableval}" = "hp" ; then
889           config_override_filter_type="::gig::vcf_type_highpass"
890        elif test "${enableval}" = "bp" ; then
891           config_override_filter_type="::gig::vcf_type_bandpass"
892        elif test "${enableval}" = "br" ; then
893           config_override_filter_type="::gig::vcf_type_bandreject"
894        elif test "${enableval}" = "lp" ; then
895           config_override_filter_type="::gig::vcf_type_lowpass"
896        elif test "${enableval}" = "lpt" ; then
897           config_override_filter_type="::gig::vcf_type_lowpassturbo"
898        elif test ! "${enableval}" = "no"; then
899           AC_MSG_ERROR([Unknown filter type for parameter --enable-override-filter-type])
900        fi
901      ],
902      [config_override_filter_type="no"]
903    )
904    if test ! "$config_override_filter_type" = "no"; then
905      AC_DEFINE_UNQUOTED(CONFIG_OVERRIDE_FILTER_TYPE, $config_override_filter_type, [Define to a filter type to always force that filter type.])
906    fi
907    
908    AC_ARG_ENABLE(gs-checksum,
909      [  --enable-gs-checksum
910                              Enable Roland General Synth SysEx checksum check
911                              (default=no). If this is enabled, all GS SysEx
912                              messages which do not provide a correct checksum
913                              will be ignored. This is disabled by default as
914                              not all devices honor GS checksums.],
915      [config_assert_gs_sysex_checksum="$enableval"],
916      [config_assert_gs_sysex_checksum="no"]
917    )
918    if test "config_assert_gs_sysex_checksum" = "yes"; then
919      AC_DEFINE_UNQUOTED(CONFIG_ASSERT_GS_SYSEX_CHECKSUM, 1, [Define to 1 if you want to enable GS SysEx check.])
920    fi
921    
922    AC_ARG_ENABLE(portamento-time-min,
923      [  --enable-portamento-time-min
924                              Minimum Portamento time in seconds
925                              (default=0.1).],
926      [config_portamento_time_min="${enableval}"],
927      [config_portamento_time_min="0.1"]
928    )
929    AC_DEFINE_UNQUOTED(CONFIG_PORTAMENTO_TIME_MIN, $config_portamento_time_min, [Define min. portamento time.])
930    
931    AC_ARG_ENABLE(portamento-time-max,
932      [  --enable-portamento-time-max
933                              Maximum Portamento time in seconds
934                              (default=32).],
935      [config_portamento_time_max="${enableval}"],
936      [config_portamento_time_max="32"]
937    )
938    AC_DEFINE_UNQUOTED(CONFIG_PORTAMENTO_TIME_MAX, $config_portamento_time_max, [Define max. portamento time.])
939    
940    AC_ARG_ENABLE(portamento-time-default,
941      [  --enable-portamento-time-default
942                              Default Portamento time in seconds
943                              (default=1).],
944      [config_portamento_time_default="${enableval}"],
945      [config_portamento_time_default="1"]
946    )
947    AC_DEFINE_UNQUOTED(CONFIG_PORTAMENTO_TIME_DEFAULT, $config_portamento_time_default, [Define default portamento time.])
948    
949    AC_ARG_ENABLE(signed-triang-algo,
950      [  --enable-signed-triang-algo
951                              Signed triangular wave algorithm to be used (e.g. for LFOs).
952                              Currently available options:
953                                intmath:
954                                  Uses integer math without any branch will then be
955                                  converted to floating point value for each sample point.
956                                  This int->float conversion might hurt on some systems.
957                                intmathabs:
958                                  Similar to intmath but uses abs() function.
959                                  Depending on compiler and platrofm this could
960                                  perform better than integer math as it avoids
961                                  an extra integer multiply instruction.
962                                diharmonic:
963                                  The triangular wave will be approximated by adding two
964                                  sinusoidials. This solution might especially hurt on
965                                  systems with weak floating point unit.
966                                benchmark (default):
967                                  This is not an algorithm. Use this option if the
968                                  appropriate algorithm should be automatically
969                                  chosen by the configure script by performing a
970                                  benchmark between the algorithms mentioned above.
971                                  This will NOT work for cross compilation!],
972      [ if test ! "(" "${enableval}" = "intmath" \
973                  -o "${enableval}" = "intmathabs" \
974                  -o "${enableval}" = "diharmonic" ")" ; then
975          AC_MSG_ERROR([Unknown triangular wave algorithm for parameter --enable-signed-triang-algo])
976        else
977          config_signed_triang_algo="${enableval}"
978        fi
979      ],
980      [config_signed_triang_algo="benchmark"]
981    )
982    
983    AC_ARG_ENABLE(unsigned-triang-algo,
984      [  --enable-unsigned-triang-algo
985                              Unsigned triangular wave algorithm to be used (e.g. for LFOs).
986                              Currently available options:
987                                intmath:
988                                  Uses integer math without any branch will then be
989                                  converted to floating point value for each sample point.
990                                  This int->float conversion might hurt on some systems.
991                                intmathabs:
992                                  Similar to intmath but uses abs() function.
993                                  Depending on compiler and platrofm this could
994                                  perform better than integer math as it avoids
995                                  an extra integer multiply instruction.
996                                diharmonic:
997                                  The triangular wave will be approximated by adding two
998                                  sinusoidials. This solution might especially hurt on
999                                  systems with weak floating point unit.
1000                                benchmark (default):
1001                                  This is not an algorithm. Use this option if the
1002                                  appropriate algorithm should be automatically
1003                                  chosen by the configure script by performing a
1004                                  benchmark between the algorithms mentioned above.
1005                                  This will NOT work for cross compilation!],
1006      [ if test ! "(" "${enableval}" = "intmath" \
1007                  -o "${enableval}" = "intmathabs" \
1008                  -o "${enableval}" = "diharmonic" ")" ; then
1009          AC_MSG_ERROR([Unknown triangular wave algorithm for parameter --enable-unsigned-triang-algo])
1010        else
1011          config_unsigned_triang_algo="${enableval}"
1012        fi
1013      ],
1014      [config_unsigned_triang_algo="benchmark"]
1015    )
1016    
1017    AC_ARG_ENABLE(process-muted-channels,
1018      [  --enable-process-muted-channels
1019                              Enable processing of muted channels (default=no).
1020                              In that mode all MIDI events in the muted channels
1021                              will be processed. This will provide information
1022                              about the active voices in the muted channels and
1023                              will not discard notes, triggered in mute mode,
1024                              when the channel is unmuted. But also will reduce
1025                              the efficiency.],
1026      [config_process_muted_channels="$enableval"],
1027      [config_process_muted_channels="no"]
1028    )
1029    if test "$config_process_muted_channels" = "yes"; then
1030      AC_DEFINE_UNQUOTED(CONFIG_PROCESS_MUTED_CHANNELS, 1, [Define to 1 if you want to enable processing of muted channels.])
1031    fi
1032    
1033    AC_ARG_ENABLE(process-all-notes-off,
1034      [  --disable-process-all-notes-off
1035                              Disable interpretation of All-Notes-Off MIDI
1036                              messages (default=on). By default LS will release
1037                              all voices whenever it receives an All-Notes-Off
1038                              MIDI message. You can disable this behavior, so
1039                              that LS simply ignores such messages.],
1040      [config_process_all_notes_off="$enableval"],
1041      [config_process_all_notes_off="yes"]
1042    )
1043    if test "$config_process_all_notes_off" = "yes"; then
1044      AC_DEFINE_UNQUOTED(CONFIG_PROCESS_ALL_NOTES_OFF, 1, [Define to 1 if you want to enable processing of All-Notes-Off MIDI messages.])
1045    fi
1046    
1047    AC_ARG_ENABLE(interpolate-volume,
1048      [  --disable-interpolate-volume
1049                              Disable interpolation of volume modulation
1050                              (default=on). With this enabled, the volume changes
1051                              generated by for example the envelope generator
1052                              will be smoother, minimizing the risk for audio
1053                              clicks. Disable it to reduce CPU usage.],
1054      [config_interpolate_volume="$enableval"],
1055      [config_interpolate_volume="yes"]
1056    )
1057    if test "$config_interpolate_volume" = "yes"; then
1058      AC_DEFINE_UNQUOTED(CONFIG_INTERPOLATE_VOLUME, 1, [Define to 1 if you want to enable interpolation of volume modulation.])
1059    fi
1060    
1061    AC_ARG_ENABLE(master-volume-sysex-by-port,
1062      [  --enable-master-volume-sysex-by-port
1063                              Whether global volume sysex message should be
1064                              applied globally to the whole sampler or only to
1065                              the sampler channels connected to the same MIDI
1066                              input port on which the sysex message arrived on.
1067                              By default global volume sysex messages apply
1068                              globally to the whole sampler, since many MIDI
1069                              devices behave that way.],
1070      [config_master_volume_sysex_by_port="$enableval"],
1071      [config_master_volume_sysex_by_port="no"]
1072    )
1073    if test "$config_master_volume_sysex_by_port" = "yes"; then
1074      AC_DEFINE_UNQUOTED(CONFIG_MASTER_VOLUME_SYSEX_BY_PORT, 1, [Define to 1 if you want global volume sysex message only be applied to the respective MIDI port.])
1075    fi
1076    
1077    AC_ARG_ENABLE(plugin-dir,
1078      [  --enable-plugin-dir
1079                              Directory where the sampler shall look for potential plugins,
1080                              that is 3rd party shared libraries that should be loaded by
1081                              the sampler on startup. By default the sampler will search
1082                              for plugins in the subdirectory "plugins" below its own
1083                              library directory.
1084                              (i.e. /usr/local/lib/linuxsampler/plugins)],
1085      [config_plugin_dir="${enableval}"],
1086      [config_plugin_dir="${libdir}/linuxsampler/plugins"]
1087    )
1088    AC_SUBST(config_plugin_dir)
1089    
1090    AC_ARG_ENABLE(default-instruments-db-location,
1091      [  --enable-default-instruments-db-location
1092                              Only when instruments DB feature is enabled: file name
1093                              which shall be taken as default location of the
1094                              instruments DB file. This location can still be
1095                              overridden at runtime with a command line switch.
1096                              (default: /var/lib/linuxsampler/instruments.db)],
1097      [config_default_instruments_db_file="${enableval}"],
1098      [config_default_instruments_db_file="/var/lib/linuxsampler/instruments.db"]
1099    )
1100    AC_DEFINE_UNQUOTED(
1101        CONFIG_DEFAULT_INSTRUMENTS_DB_LOCATION,
1102        "$config_default_instruments_db_file",
1103        [Only when instruments DB feature is enabled: default location of the DB file.]
1104    )
1105    AC_SUBST(config_default_instruments_db_file)
1106    
1107    
1108    ###########################################################################
1109    # Automatic Benchmarks (to detect the best algorithms for the system)
1110    
1111    AC_LANG_SAVE
1112    
1113    if test "$config_signed_triang_algo" = "benchmark"; then
1114        echo -n "benchmarking for the best (signed) triangular oscillator algorithm... "
1115        AC_LANG_CPLUSPLUS
1116        AC_TRY_RUN([
1117                #define SIGNED 1
1118                #define SILENT 1
1119                #include "${srcdir}/benchmarks/triang.cpp"
1120            ],
1121            triang_signed=0,
1122            triang_signed=$?,
1123            triang_signed=0
1124        )
1125        if test "$triang_signed" = "2"; then
1126            config_signed_triang_algo="intmath"
1127            echo "integer math"
1128        elif test "$triang_signed" = "3"; then
1129            config_signed_triang_algo="diharmonic"
1130            echo "di harmonics"
1131        elif test "$triang_signed" = "5"; then
1132            config_signed_triang_algo="intmathabs"
1133            echo "integer math using abs()"
1134        else
1135            echo "Benchmark of signed triangular wave algorithms failed!"
1136            echo "Maybe you are doing cross compilation? In that case you have to select"
1137            echo "an algorithm manually with './configure --enable-signed-triang-algo=...'"
1138            echo "Call './configure --help' for further information or read configure.in."
1139            exit -1;
1140        fi
1141    else
1142        case "$config_signed_triang_algo" in
1143            intmath)
1144                triang_signed=2 ;;
1145            diharmonic)
1146                triang_signed=3 ;;
1147            intmathabs)
1148                triang_signed=5 ;;
1149        esac
1150    fi
1151    AC_DEFINE_UNQUOTED(CONFIG_SIGNED_TRIANG_ALGO, ${triang_signed}, [Define signed triangular wave algorithm to be used.])
1152    
1153    if test "$config_unsigned_triang_algo" = "benchmark"; then
1154        echo -n "benchmarking for the best (unsigned) triangular oscillator algorithm... "
1155        AC_LANG_CPLUSPLUS
1156        AC_TRY_RUN([
1157                #define SIGNED 0
1158                #define SILENT 1
1159                #include "${srcdir}/benchmarks/triang.cpp"
1160            ],
1161            triang_unsigned=0,
1162            triang_unsigned=$?,
1163            triang_unsigned=0
1164        )
1165        if test "$triang_unsigned" = "2"; then
1166            config_unsigned_triang_algo="intmath"
1167            echo "integer math"
1168        elif test "$triang_unsigned" = "3"; then
1169            config_unsigned_triang_algo="diharmonic"
1170            echo "di harmonics"
1171        elif test "$triang_unsigned" = "5"; then
1172            config_unsigned_triang_algo="intmathabs"
1173            echo "integer math using abs()"
1174        else
1175            echo "Benchmark of unsigned triangular wave algorithms failed!"
1176            echo "Maybe you are doing cross compilation? In that case you have to select"
1177            echo "an algorithm manually with './configure --enable-unsigned-triang-algo=...'"
1178            echo "Call './configure --help' for further information or read configure.in."
1179            exit -1;
1180        fi
1181    else
1182        case "$config_unsigned_triang_algo" in
1183            intmath)
1184                triang_unsigned=2 ;;
1185            diharmonic)
1186                triang_unsigned=3 ;;
1187            intmathabs)
1188                triang_unsigned=5 ;;
1189        esac
1190    fi
1191    AC_DEFINE_UNQUOTED(CONFIG_UNSIGNED_TRIANG_ALGO, ${triang_unsigned}, [Define unsigned triangular wave algorithm to be used.])
1192    
1193    AC_LANG_RESTORE
1194    
1195    
1196    ###########################################################################
1197    # Create Build Files
1198    
1199  AM_CONFIG_HEADER(config.h)  AM_CONFIG_HEADER(config.h)
1200  AM_INIT_AUTOMAKE(linuxsampler, 0.1)  AM_INIT_AUTOMAKE(linuxsampler, "$LINUXSAMPLER_RELEASE_MAJOR.$LINUXSAMPLER_RELEASE_MINOR.$LINUXSAMPLER_RELEASE_BUILD")
1201    
1202  AC_LANG_CPLUSPLUS  AC_LANG_CPLUSPLUS
 AC_PROG_CXX  
 AM_PROG_LIBTOOL  
1203    
1204  AC_OUTPUT(Makefile src/Makefile)  # some gcc 4.0 versions need -msse for SSE register allocations
1205    if test "$config_asm" = "yes"; then
1206      if test "$def_arch_x86" = 1; then
1207        CXXFLAGS="$CXXFLAGS -msse"
1208      fi
1209    fi
1210    
1211    # autoconf 2.59/libtool 1.5.12 bug? work-around. Without a check like
1212    # this, the dlfcn.h check in am_prog_libtool may fail.
1213    AC_CHECK_HEADER(stdlib.h)
1214    
1215    AC_OUTPUT( \
1216        Makefile \
1217        man/Makefile \
1218        man/linuxsampler.1 \
1219        src/Makefile \
1220        src/db/Makefile \
1221        src/network/Makefile \
1222        src/engines/Makefile \
1223        src/engines/gig/Makefile \
1224        src/engines/common/Makefile \
1225        src/effects/Makefile \
1226        src/common/Makefile \
1227        src/testcases/Makefile \
1228        src/drivers/Makefile \
1229        src/drivers/audio/Makefile \
1230        src/drivers/midi/Makefile \
1231        src/plugins/Makefile \
1232        src/hostplugins/Makefile \
1233        src/hostplugins/dssi/Makefile \
1234        src/hostplugins/lv2/Makefile \
1235        src/hostplugins/vst/Makefile \
1236        src/hostplugins/au/Makefile \
1237        linuxsampler.spec \
1238        debian/Makefile \
1239        Artwork/Makefile \
1240        scripts/Makefile \
1241        osx/Makefile \
1242        osx/linuxsampler.xcodeproj/Makefile \
1243        Documentation/Makefile \
1244        Documentation/Engines/Makefile \
1245        Documentation/Engines/gig/Makefile \
1246        linuxsampler.pc \
1247        Doxyfile \
1248    )
1249    
1250    # resolve all nested variables in '${config_plugin_dir}'
1251    # (merely for providing a human readable summary below)
1252    while test $config_plugin_dir != `eval echo ${config_plugin_dir}` ; do
1253            config_plugin_dir=`eval echo ${config_plugin_dir}`
1254    done
1255    
1256    
1257    ###########################################################################
1258    # Output All Configuration Options
1259    
1260    echo ""
1261    echo "#####################################################################"
1262    echo "# LinuxSampler Configuration                                        #"
1263    echo "#-------------------------------------------------------------------#"
1264    echo "# Assembly Optimizations: ${config_asm}"
1265    echo "# Development Mode: ${config_dev_mode}"
1266    echo "# Debug Level: ${config_debug_level}"
1267    echo "# Use Exceptions in RT Context: ${config_rt_exceptions}"
1268    echo "# Preload Samples: ${config_preload_samples}"
1269    echo "# Maximum Pitch: ${config_max_pitch} (octaves)"
1270    echo "# Maximum Events: ${config_max_events}"
1271    echo "# Envelope Bottom Level: ${config_eg_bottom} (linear)"
1272    echo "# Envelope Minimum Release Time: ${config_eg_min_release_time} s"
1273    echo "# Streams to be refilled per Disk Thread Cycle: ${config_refill_streams}"
1274    echo "# Minimum Stream Refill Size: ${config_stream_min_refill}"
1275    echo "# Maximum Stream Refill Size: ${config_stream_max_refill}"
1276    echo "# Stream Size: ${config_stream_size}"
1277    echo "# Default Maximum Disk Streams: ${config_max_streams}"
1278    echo "# Default Maximum Voices: ${config_max_voices}"
1279    echo "# Default Subfragment Size: ${config_subfragment_size}"
1280    echo "# Default Global Volume Attenuation: ${config_global_attenuation_default}"
1281    echo "# Voice Stealing Algorithm: ${config_voice_steal_algo}"
1282    echo "# Signed Triangular Oscillator Algorithm: ${config_signed_triang_algo}"
1283    echo "# Unsigned Triangular Oscillator Algorithm: ${config_unsigned_triang_algo}"
1284    echo "# SysEx Buffer Size: ${config_sysex_buffer_size} Byte"
1285    echo "# Min. Portamento Time: ${config_portamento_time_min} s"
1286    echo "# Max. Portamento Time: ${config_portamento_time_max} s"
1287    echo "# Default Portamento Time: ${config_portamento_time_default} s"
1288    echo "# Force Filter Usage: ${config_force_filter}"
1289    echo "# Filter Cutoff Minimum: ${config_filter_cutoff_min} Hz"
1290    echo "# Filter Cutoff Maximum: ${config_filter_cutoff_max} Hz"
1291    echo "# Override Filter Cutoff Controller: ${config_override_cutoff_ctrl}"
1292    echo "# Override Filter Resonance Controller: ${config_override_resonance_ctrl}"
1293    echo "# Override Filter Type: ${config_override_filter_type}"
1294    echo "# Assert GS SysEx Checksum: ${config_assert_gs_sysex_checksum}"
1295    echo "# Process Muted Channels: ${config_process_muted_channels}"
1296    echo "# Process All-Notes-Off MIDI message: ${config_process_all_notes_off}"
1297    echo "# Apply global volume SysEx by MIDI port: ${config_master_volume_sysex_by_port}"
1298    echo "# Interpolate Volume: ${config_interpolate_volume}"
1299    echo "# Instruments database support: ${config_instruments_db}"
1300    if test "$config_instruments_db" = "yes"; then
1301    echo "# Instruments DB default location: ${config_default_instruments_db_file}"
1302    fi
1303    echo "# Plugin Path: ${config_plugin_dir}"
1304    echo "#-------------------------------------------------------------------#"
1305    echo "# Read './configure --help' or file 'configure.in' for details.     #"
1306    echo "#####################################################################"
1307    echo ""
1308    echo "Good. Now type 'make' to compile, followed by 'make install' as root."
1309    echo ""

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