Scale the ring modulator's mono input when expanding to multi-channel
[openal-soft/android/lowlatency.git] / CMakeLists.txt
blob16cc0d1fd65e709b311b6b308800abc6f23db752
1 # CMake build file list for OpenAL
3 CMAKE_MINIMUM_REQUIRED(VERSION 2.4)
5 IF(COMMAND CMAKE_POLICY)
6   CMAKE_POLICY(SET CMP0003 NEW)
7 ENDIF(COMMAND CMAKE_POLICY)
9 SET(CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/cmake")
11 INCLUDE(CheckFunctionExists)
12 INCLUDE(CheckLibraryExists)
13 INCLUDE(CheckSharedLibraryExists)
14 INCLUDE(CheckIncludeFile)
15 INCLUDE(CheckIncludeFiles)
16 INCLUDE(CheckSymbolExists)
17 INCLUDE(CheckCCompilerFlag)
18 INCLUDE(CheckCSourceCompiles)
19 INCLUDE(CheckTypeSize)
22 PROJECT(OpenAL C)
25 SET(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS TRUE)
28 OPTION(ALSA    "Check for ALSA backend"                ON)
29 OPTION(OSS     "Check for OSS backend"                 ON)
30 OPTION(SOLARIS "Check for Solaris backend"             ON)
31 OPTION(DSOUND  "Check for DirectSound backend"         ON)
32 OPTION(WINMM   "Check for Windows Multimedia backend"  ON)
33 OPTION(PORTAUDIO  "Check for PortAudio backend"        ON)
34 OPTION(PULSEAUDIO "Check for PulseAudio backend"       ON)
36 OPTION(DLOPEN  "Check for the dlopen API for loading optional libs"  ON)
38 OPTION(WERROR  "Treat compile warnings as errors"      OFF)
40 OPTION(EXAMPLES  "Build example programs"              ON)
42 OPTION(ALSOFT_CONFIG "Install alsoft.conf configuration file" OFF)
45 IF(WIN32)
46     SET(LIBNAME OpenAL32)
47     ADD_DEFINITIONS("-D_WIN32")
48 ELSE()
49     SET(LIBNAME openal)
50 ENDIF()
52 SET(LIB_MAJOR_VERSION "1")
53 SET(LIB_MINOR_VERSION "12")
54 SET(LIB_BUILD_VERSION "854")
55 SET(LIB_VERSION "${LIB_MAJOR_VERSION}.${LIB_MINOR_VERSION}.${LIB_BUILD_VERSION}")
56 IF(NOT DEFINED LIB_INSTALL_DIR)
57   SET(LIB_INSTALL_DIR "lib${LIB_SUFFIX}")
58 ENDIF(NOT DEFINED LIB_INSTALL_DIR)
61 CHECK_TYPE_SIZE("long" SIZEOF_LONG)
62 CHECK_TYPE_SIZE("long long" SIZEOF_LONG_LONG)
63 CHECK_TYPE_SIZE("unsigned int" SIZEOF_UINT)
64 CHECK_TYPE_SIZE("void*" SIZEOF_VOIDP)
67 # Add definitions, compiler switches, etc.
68 INCLUDE_DIRECTORIES(OpenAL32/Include include "${OpenAL_BINARY_DIR}")
70 IF(NOT CMAKE_BUILD_TYPE)
71     SET(CMAKE_BUILD_TYPE RelWithDebInfo CACHE STRING
72         "Choose the type of build, options are: Debug Release RelWithDebInfo MinSizeRel."
73         FORCE)
74 ENDIF()
75 IF(NOT CMAKE_DEBUG_POSTFIX)
76     SET(CMAKE_DEBUG_POSTFIX "" CACHE STRING
77         "Library postfix for debug builds. Normally left blank."
78         FORCE)
79 ENDIF()
81 IF(MSVC)
82     # ???
83     SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -D_DEBUG")
84     SET(CMAKE_C_FLAGS_MINSIZEREL "${CMAKE_C_FLAGS_MINSIZEREL} -DNDEBUG")
85     SET(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE} -DNDEBUG")
86     SET(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -D_DEBUG")
87     ADD_DEFINITIONS(-D_CRT_SECURE_NO_WARNINGS)
88     ADD_DEFINITIONS(-D_CRT_NONSTDC_NO_DEPRECATE)
90     IF(NOT DXSDK_DIR)
91         STRING(REGEX REPLACE "\\\\" "/" DXSDK_DIR "$ENV{DXSDK_DIR}")
92     ELSE()
93         STRING(REGEX REPLACE "\\\\" "/" DXSDK_DIR "${DXSDK_DIR}")
94     ENDIF()
95     IF(DXSDK_DIR)
96         MESSAGE(STATUS "Using DirectX SDK directory: ${DXSDK_DIR}")
97         SET(CMAKE_REQUIRED_INCLUDES ${CMAKE_REQUIRED_INCLUDES} "${DXSDK_DIR}/Include")
98         INCLUDE_DIRECTORIES("${DXSDK_DIR}/Include")
99         LINK_DIRECTORIES("${DXSDK_DIR}/Lib")
100     ENDIF()
102 ELSE()
103     ADD_DEFINITIONS(-Wall)
104     CHECK_C_COMPILER_FLAG(-Wextra HAVE_W_EXTRA)
105     IF(HAVE_W_EXTRA)
106         ADD_DEFINITIONS(-Wextra)
107     ENDIF()
109     IF(WERROR)
110         ADD_DEFINITIONS(-Werror)
111     ENDIF()
113     SET(CMAKE_C_FLAGS_RELWITHDEBINFO "-g -O2 -funroll-loops -D_DEBUG" CACHE STRING
114         "Flags used by the compiler during Release with Debug Info builds."
115         FORCE)
116     SET(CMAKE_C_FLAGS_MINSIZEREL "-Os -DNDEBUG" CACHE STRING
117         "Flags used by the compiler during release minsize builds."
118         FORCE)
119     SET(CMAKE_C_FLAGS_RELEASE "-O2 -funroll-loops -fomit-frame-pointer -DNDEBUG" CACHE STRING
120         "Flags used by the compiler during release builds"
121         FORCE)
122     SET(CMAKE_C_FLAGS_DEBUG "-g3 -D_DEBUG" CACHE STRING
123         "Flags used by the compiler during debug builds."
124         FORCE)
126     # Set visibility options if available
127     IF(NOT WIN32)
128         CHECK_C_SOURCE_COMPILES("int foo() __attribute__((destructor));
129                                  int main() {return 0;}" HAVE_GCC_DESTRUCTOR)
131         CHECK_C_COMPILER_FLAG(-fvisibility=hidden HAVE_VISIBILITY_SWITCH)
132         IF(HAVE_VISIBILITY_SWITCH)
133             CHECK_C_SOURCE_COMPILES("int foo() __attribute__((visibility(\"default\")));
134                                      int main() {return 0;}" HAVE_GCC_VISIBILITY)
135             IF(HAVE_GCC_VISIBILITY)
136                 ADD_DEFINITIONS(-fvisibility=hidden -DHAVE_GCC_VISIBILITY)
137             ENDIF()
138         ENDIF()
139     ENDIF()
140 ENDIF()
142 CHECK_C_SOURCE_COMPILES("int foo(const char *str, ...) __attribute__((format(printf, 1, 2)));
143                          int main() {return 0;}" HAVE_GCC_FORMAT)
145 CHECK_INCLUDE_FILE(fenv.h HAVE_FENV_H)
146 CHECK_INCLUDE_FILE(float.h HAVE_FLOAT_H)
148 CHECK_LIBRARY_EXISTS(m  powf   "" HAVE_POWF)
149 CHECK_LIBRARY_EXISTS(m  sqrtf  "" HAVE_SQRTF)
150 CHECK_LIBRARY_EXISTS(m  acosf  "" HAVE_ACOSF)
151 CHECK_LIBRARY_EXISTS(m  atanf  "" HAVE_ATANF)
152 CHECK_LIBRARY_EXISTS(m  fabsf  "" HAVE_FABSF)
153 IF(HAVE_FENV_H)
154     CHECK_LIBRARY_EXISTS(m  fesetround  "" HAVE_FESETROUND)
155 ENDIF()
156 IF(HAVE_SQRTF OR HAVE_ACOSF OR HAVE_ATANF OR HAVE_FABSF OR HAVE_FESETROUND)
157     SET(EXTRA_LIBS m ${EXTRA_LIBS})
158 ENDIF()
159 CHECK_FUNCTION_EXISTS(strtof HAVE_STRTOF)
160 CHECK_FUNCTION_EXISTS(_controlfp HAVE__CONTROLFP)
162 CHECK_FUNCTION_EXISTS(stat HAVE_STAT)
163 CHECK_FUNCTION_EXISTS(strcasecmp HAVE_STRCASECMP)
164 IF(NOT HAVE_STRCASECMP)
165     CHECK_FUNCTION_EXISTS(_stricmp HAVE__STRICMP)
166     IF(NOT HAVE__STRICMP)
167         MESSAGE(FATAL_ERROR "No case-insensitive compare function found, please report!")
168     ENDIF()
170     ADD_DEFINITIONS(-Dstrcasecmp=_stricmp)
171 ENDIF()
173 CHECK_FUNCTION_EXISTS(strncasecmp HAVE_STRNCASECMP)
174 IF(NOT HAVE_STRNCASECMP)
175     CHECK_FUNCTION_EXISTS(_strnicmp HAVE__STRNICMP)
176     IF(NOT HAVE__STRNICMP)
177         MESSAGE(FATAL_ERROR "No case-insensitive size-limitted compare function found, please report!")
178     ENDIF()
180     ADD_DEFINITIONS(-Dstrncasecmp=_strnicmp)
181 ENDIF()
183 CHECK_FUNCTION_EXISTS(snprintf HAVE_SNPRINTF)
184 IF(NOT HAVE_SNPRINTF)
185     CHECK_FUNCTION_EXISTS(_snprintf HAVE__SNPRINTF)
186     IF(NOT HAVE__SNPRINTF)
187         MESSAGE(FATAL_ERROR "No snprintf function found, please report!")
188     ENDIF()
190     ADD_DEFINITIONS(-Dsnprintf=_snprintf)
191 ENDIF()
193 CHECK_FUNCTION_EXISTS(vsnprintf HAVE_VSNPRINTF)
194 IF(NOT HAVE_VSNPRINTF)
195     CHECK_FUNCTION_EXISTS(_vsnprintf HAVE__VSNPRINTF)
196     IF(NOT HAVE__VSNPRINTF)
197         MESSAGE(FATAL_ERROR "No vsnprintf function found, please report!")
198     ENDIF()
200     ADD_DEFINITIONS(-Dvsnprintf=_vsnprintf)
201 ENDIF()
203 CHECK_SYMBOL_EXISTS(isnan math.h HAVE_ISNAN)
204 IF(NOT HAVE_ISNAN)
205     CHECK_FUNCTION_EXISTS(_isnan HAVE__ISNAN)
206     IF(NOT HAVE__ISNAN)
207         MESSAGE(FATAL_ERROR "No isnan function found, please report!")
208     ENDIF()
210     ADD_DEFINITIONS(-Disnan=_isnan)
211 ENDIF()
214 # Check for the dlopen API (for dynamicly loading backend libs)
215 IF(DLOPEN)
216     CHECK_INCLUDE_FILE(dlfcn.h HAVE_DLFCN_H)
217     IF(HAVE_DLFCN_H)
218         CHECK_LIBRARY_EXISTS(dl dlopen "" HAVE_LIBDL)
219         IF(HAVE_LIBDL)
220             SET(EXTRA_LIBS dl ${EXTRA_LIBS})
221         ENDIF()
222     ENDIF()
223 ENDIF()
225 # Check if we have Windows headers
226 CHECK_INCLUDE_FILE(windows.h HAVE_WINDOWS_H -D_WIN32_WINNT=0x0500)
227 IF(NOT HAVE_WINDOWS_H)
228     CHECK_FUNCTION_EXISTS(gettimeofday HAVE_GETTIMEOFDAY)
229     IF(NOT HAVE_GETTIMEOFDAY)
230         MESSAGE(FATAL_ERROR "No timing function found!")
231     ENDIF()
233     CHECK_FUNCTION_EXISTS(nanosleep HAVE_NANOSLEEP)
234     IF(NOT HAVE_NANOSLEEP)
235         MESSAGE(FATAL_ERROR "No sleep function found!")
236     ENDIF()
238     CHECK_C_COMPILER_FLAG(-pthread HAVE_PTHREAD)
239     IF(HAVE_PTHREAD)
240         ADD_DEFINITIONS(-pthread)
241         SET(EXTRA_LIBS ${EXTRA_LIBS} -pthread)
242     ENDIF()
244     # We need pthreads outside of Windows
245     CHECK_INCLUDE_FILE(pthread.h HAVE_PTHREAD_H)
246     IF(NOT HAVE_PTHREAD_H)
247         MESSAGE(FATAL_ERROR "PThreads is required for non-Windows builds!")
248     ENDIF()
249     # Some systems need pthread_np.h to get recursive mutexes
250     CHECK_INCLUDE_FILES("pthread.h;pthread_np.h" HAVE_PTHREAD_NP_H)
252     # _GNU_SOURCE is needed on some systems for extra attributes, and
253     # _REENTRANT is needed for libc thread-safety
254     ADD_DEFINITIONS(-D_GNU_SOURCE=1)
255     CHECK_LIBRARY_EXISTS(pthread pthread_create "" HAVE_LIBPTHREAD)
256     IF(HAVE_LIBPTHREAD)
257         SET(EXTRA_LIBS pthread ${EXTRA_LIBS})
258     ENDIF()
260     CHECK_LIBRARY_EXISTS(pthread pthread_setschedparam "" HAVE_PTHREAD_SETSCHEDPARAM)
262     CHECK_LIBRARY_EXISTS(rt clock_gettime "" HAVE_LIBRT)
263     IF(HAVE_LIBRT)
264         SET(EXTRA_LIBS rt ${EXTRA_LIBS})
265     ENDIF()
266 ENDIF()
268 # Check for a 64-bit type
269 CHECK_INCLUDE_FILE(stdint.h HAVE_STDINT_H)
270 IF(NOT HAVE_STDINT_H)
271     IF(HAVE_WINDOWS_H)
272         CHECK_C_SOURCE_COMPILES("\#define _WIN32_WINNT 0x0500
273                                  \#include <windows.h>
274                                  __int64 foo;
275                                  int main() {return 0;}" HAVE___INT64)
276     ENDIF()
277     IF(NOT HAVE___INT64)
278         IF(NOT SIZEOF_LONG MATCHES "8")
279             IF(NOT SIZEOF_LONG_LONG MATCHES "8")
280                 MESSAGE(FATAL_ERROR "No 64-bit types found, please report!")
281             ENDIF()
282         ENDIF()
283     ENDIF()
284 ENDIF()
287 SET(OPENAL_OBJS  OpenAL32/alAuxEffectSlot.c
288                  OpenAL32/alBuffer.c
289                  OpenAL32/alDatabuffer.c
290                  OpenAL32/alEffect.c
291                  OpenAL32/alError.c
292                  OpenAL32/alExtension.c
293                  OpenAL32/alFilter.c
294                  OpenAL32/alListener.c
295                  OpenAL32/alSource.c
296                  OpenAL32/alState.c
297                  OpenAL32/alThunk.c
299 SET(ALC_OBJS  Alc/ALc.c
300               Alc/ALu.c
301               Alc/alcConfig.c
302               Alc/alcEcho.c
303               Alc/alcModulator.c
304               Alc/alcReverb.c
305               Alc/alcRing.c
306               Alc/alcThread.c
307               Alc/bs2b.c
308               Alc/wave.c
311 SET(BACKENDS "")
313 # Check ALSA backend
314 IF(ALSA)
315     CHECK_INCLUDE_FILE(alsa/asoundlib.h HAVE_ALSA_ASOUNDLIB_H)
316     IF(HAVE_ALSA_ASOUNDLIB_H)
317         CHECK_SHARED_LIBRARY_EXISTS(asound snd_pcm_open 4 "" HAVE_LIBASOUND)
318         IF(HAVE_LIBASOUND OR HAVE_DLFCN_H OR WIN32)
319             SET(HAVE_ALSA 1)
320             SET(ALC_OBJS  ${ALC_OBJS} Alc/alsa.c)
321             IF(HAVE_DLFCN_H OR WIN32)
322                 SET(BACKENDS  "${BACKENDS} ALSA,")
323             ELSE()
324                 SET(BACKENDS  "${BACKENDS} ALSA \(linked\),")
325                 SET(EXTRA_LIBS asound ${EXTRA_LIBS})
326             ENDIF()
327         ENDIF()
328     ENDIF()
329 ENDIF()
331 # Check OSS backend
332 IF(OSS)
333     CHECK_INCLUDE_FILE(sys/soundcard.h HAVE_SYS_SOUNDCARD_H)
334     IF(HAVE_SYS_SOUNDCARD_H)
335         SET(HAVE_OSS 1)
336         SET(ALC_OBJS  ${ALC_OBJS} Alc/oss.c)
337         SET(BACKENDS  "${BACKENDS} OSS,")
338     ENDIF()
339 ENDIF()
341 # Check Solaris backend
342 IF(SOLARIS)
343     CHECK_INCLUDE_FILE(sys/audioio.h HAVE_SYS_AUDIOIO_H)
344     IF(HAVE_SYS_AUDIOIO_H)
345         SET(HAVE_SOLARIS 1)
346         SET(ALC_OBJS  ${ALC_OBJS} Alc/solaris.c)
347         SET(BACKENDS  "${BACKENDS} Solaris,")
348     ENDIF()
349 ENDIF()
351 # Check DSound/MMSystem backend
352 IF(DSOUND)
353     CHECK_INCLUDE_FILE(dsound.h HAVE_DSOUND_H)
354     IF(HAVE_DSOUND_H)
355         CHECK_SHARED_LIBRARY_EXISTS(dsound DirectSoundCreate 3 "" HAVE_LIBDSOUND)
356         IF(HAVE_LIBDSOUND OR HAVE_DLFCN_H OR WIN32)
357             SET(HAVE_DSOUND 1)
358             SET(ALC_OBJS  ${ALC_OBJS} Alc/dsound.c)
360             IF(HAVE_DLFCN_H OR WIN32)
361                 SET(BACKENDS  "${BACKENDS} DirectSound,")
362             ELSE()
363                 SET(BACKENDS  "${BACKENDS} DirectSound \(linked\),")
364                 SET(EXTRA_LIBS dsound ${EXTRA_LIBS})
365             ENDIF()
366         ENDIF()
367     ENDIF()
368 ENDIF()
369 IF(HAVE_WINDOWS_H)
370     IF(WINMM)
371         CHECK_INCLUDE_FILES("windows.h;mmsystem.h" HAVE_MMSYSTEM_H -D_WIN32_WINNT=0x0500)
372         IF(HAVE_MMSYSTEM_H)
373             CHECK_SHARED_LIBRARY_EXISTS(winmm waveInOpen 6 "" HAVE_LIBWINMM)
374             IF(HAVE_LIBWINMM)
375                 SET(HAVE_WINMM 1)
376                 SET(ALC_OBJS  ${ALC_OBJS} Alc/winmm.c)
377                 SET(BACKENDS  "${BACKENDS} WinMM,")
379                 SET(EXTRA_LIBS winmm ${EXTRA_LIBS})
380             ENDIF()
381         ENDIF()
382     ENDIF()
383 ENDIF()
385 # Check PortAudio backend
386 IF(PORTAUDIO)
387     CHECK_INCLUDE_FILE(portaudio.h HAVE_PORTAUDIO_H)
388     IF(HAVE_PORTAUDIO_H)
389         CHECK_SHARED_LIBRARY_EXISTS(portaudio Pa_Initialize 0 "" HAVE_LIBPORTAUDIO)
390         IF(HAVE_LIBPORTAUDIO OR HAVE_DLFCN_H OR WIN32)
391             SET(HAVE_PORTAUDIO 1)
392             SET(ALC_OBJS  ${ALC_OBJS} Alc/portaudio.c)
393             IF(HAVE_DLFCN_H OR WIN32)
394                 SET(BACKENDS  "${BACKENDS} PortAudio,")
395             ELSE()
396                 SET(BACKENDS  "${BACKENDS} PortAudio \(linked\),")
397                 SET(EXTRA_LIBS portaudio ${EXTRA_LIBS})
398             ENDIF()
399         ENDIF()
400     ENDIF()
401 ENDIF()
403 # Check PortAudio backend
404 IF(PULSEAUDIO)
405     CHECK_INCLUDE_FILE(pulse/pulseaudio.h HAVE_PULSE_PULSEAUDIO_H)
406     IF(HAVE_PULSE_PULSEAUDIO_H)
407         CHECK_SHARED_LIBRARY_EXISTS(pulse pa_context_new 2 "" HAVE_LIBPULSE)
408         IF(HAVE_LIBPULSE OR HAVE_DLFCN_H OR WIN32)
409             SET(HAVE_PULSEAUDIO 1)
410             SET(ALC_OBJS  ${ALC_OBJS} Alc/pulseaudio.c)
411             IF(HAVE_DLFCN_H OR WIN32)
412                 SET(BACKENDS  "${BACKENDS} PulseAudio,")
413             ELSE()
414                 SET(BACKENDS  "${BACKENDS} PulseAudio \(linked\),")
415                 SET(EXTRA_LIBS pulse ${EXTRA_LIBS})
416             ENDIF()
417         ENDIF()
418     ENDIF()
419 ENDIF()
421 # This is always available
422 SET(BACKENDS  "${BACKENDS} WaveFile")
424 # Needed for openal.pc.in
425 SET(prefix ${CMAKE_INSTALL_PREFIX})
426 SET(exec_prefix "\${prefix}")
427 SET(libdir "\${exec_prefix}/${LIB_INSTALL_DIR}")
428 SET(bindir "\${exec_prefix}/bin")
429 SET(includedir "\${prefix}/include")
430 SET(PACKAGE_VERSION "${LIB_VERSION}")
432 # End configuration
433 CONFIGURE_FILE(
434     "${OpenAL_SOURCE_DIR}/config.h.in"
435     "${OpenAL_BINARY_DIR}/config.h")
436 CONFIGURE_FILE(
437     "${OpenAL_SOURCE_DIR}/openal.pc.in"
438     "${OpenAL_BINARY_DIR}/openal.pc"
439     @ONLY)
441 # Build a library
442 IF(NOT LIBTYPE)
443     SET(LIBTYPE SHARED)
444 ENDIF()
445 ADD_LIBRARY(${LIBNAME} ${LIBTYPE} ${OPENAL_OBJS} ${ALC_OBJS})
446 SET_TARGET_PROPERTIES(${LIBNAME} PROPERTIES DEFINE_SYMBOL AL_BUILD_LIBRARY
447                                             COMPILE_FLAGS -DAL_ALEXT_PROTOTYPES
448                                             VERSION ${LIB_VERSION}
449                                             SOVERSION ${LIB_MAJOR_VERSION})
450 IF(WIN32)
451     SET_TARGET_PROPERTIES(${LIBNAME} PROPERTIES PREFIX "")
452 ENDIF()
454 TARGET_LINK_LIBRARIES(${LIBNAME} ${EXTRA_LIBS})
456 # Add an install target here
457 INSTALL(TARGETS ${LIBNAME}
458         RUNTIME DESTINATION bin
459         LIBRARY DESTINATION ${LIB_INSTALL_DIR}
460         ARCHIVE DESTINATION ${LIB_INSTALL_DIR}
462 INSTALL(FILES include/AL/al.h
463               include/AL/alc.h
464               include/AL/alext.h
465               include/AL/efx.h
466         DESTINATION include/AL
468 INSTALL(FILES "${OpenAL_BINARY_DIR}/openal.pc"
469         DESTINATION "${LIB_INSTALL_DIR}/pkgconfig")
471 # Install alsoft.conf configuration file
472 IF(ALSOFT_CONFIG)
473     INSTALL(FILES alsoftrc.sample
474             DESTINATION /etc/openal
475             RENAME alsoft.conf
476     )
477 ENDIF()
479 IF(EXAMPLES)
480     ADD_EXECUTABLE(openal-info examples/openal-info.c)
481     TARGET_LINK_LIBRARIES(openal-info ${LIBNAME})
482     INSTALL(TARGETS openal-info
483             RUNTIME DESTINATION bin
484             LIBRARY DESTINATION ${LIB_INSTALL_DIR}
485             ARCHIVE DESTINATION ${LIB_INSTALL_DIR}
486     )
487 ENDIF()
489 MESSAGE(STATUS "")
490 MESSAGE(STATUS "Building OpenAL with support for the following backends:")
491 MESSAGE(STATUS "    ${BACKENDS}")
492 MESSAGE(STATUS "")
494 IF(WIN32)
495     IF(NOT HAVE_DSOUND)
496         MESSAGE(STATUS "WARNING: Building the Windows version without DirectSound output")
497         MESSAGE(STATUS "         This is probably NOT what you want!")
498         MESSAGE(STATUS "")
499     ENDIF()
500 ENDIF()