mirror of
https://github.com/yquake2/yquake2remaster.git
synced 2024-11-22 20:51:31 +00:00
Optionally link libopenal at compile time
In Linux distributions, having the executable depend on the right
libraries and arrange for them to be installed is straightforward,
and there's a lot of infrastructure for tracking which library
version a particular executable needs, including making sure we have
a version that contains all of the symbols that were used. Loading
libopenal at runtime defeats that infrastructure.
The ability to substitute a different-but-compatible libopenal,
or operate with reduced functionality without libopenal, might
still be desirable for generic/portable binary releases.
The CMake build system already linked the executable to
${OPENAL_LIBRARY} anyway, so it is already a hard dependency in that
build system.
This commit is contained in:
Simon McVittie
parent
6d38cc8609
commit
5887a9e79e
3 changed files with 138 additions and 101 deletions
17
Makefile
17
Makefile
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@ -44,6 +44,12 @@ WITH_OGG:=yes
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# installed
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WITH_OPENAL:=yes
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# Enables optional runtime loading of OpenAL (dlopen
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# or similar).
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# If set to "no", the library is linked in at compile
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# time in the normal way.
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DLOPEN_OPENAL:=yes
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# Use SDL2 instead of SDL1.2. Disables CD audio support,
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# because SDL2 has none. Use OGG/Vorbis music instead :-)
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# On Windows sdl-config isn't used, so make sure that
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@ -398,15 +404,20 @@ release/quake2 : LDFLAGS += -lvorbis -lvorbisfile -logg
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endif
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ifeq ($(WITH_OPENAL),yes)
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ifeq ($(DLOPEN_OPENAL),yes)
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ifeq ($(OSTYPE), OpenBSD)
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release/quake2 : CFLAGS += -DUSE_OPENAL -DDEFAULT_OPENAL_DRIVER='"libopenal.so"'
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release/quake2 : CFLAGS += -DUSE_OPENAL -DDEFAULT_OPENAL_DRIVER='"libopenal.so"' -DDLOPEN_OPENAL
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else ifeq ($(OSTYPE), Darwin)
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release/quake2 : CFLAGS += -DUSE_OPENAL -DDEFAULT_OPENAL_DRIVER='"libopenal.dylib"' -I/usr/local/opt/openal-soft/include
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release/quake2 : LDFLAGS += -L/usr/local/opt/openal-soft/lib
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else
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release/quake2 : CFLAGS += -DUSE_OPENAL -DDEFAULT_OPENAL_DRIVER='"libopenal.so.1"'
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endif
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release/quake2 : CFLAGS += -DUSE_OPENAL -DDEFAULT_OPENAL_DRIVER='"libopenal.so.1"' -DDLOPEN_OPENAL
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endif
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else # !DLOPEN_OPENAL
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release/quake2 : CFLAGS += -DUSE_OPENAL
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release/quake2 : LDFLAGS += -lopenal
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endif # !DLOPEN_OPENAL
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endif # WITH_OPENAL
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ifeq ($(WITH_ZIP),yes)
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release/quake2 : CFLAGS += -DZIP -DNOUNCRYPT
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@ -43,7 +43,9 @@
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static ALCcontext *context;
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static ALCdevice *device;
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static cvar_t *al_device;
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#ifdef DLOPEN_OPENAL
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static cvar_t *al_driver;
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#endif
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static void *handle;
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/* Function pointers for OpenAL management */
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@ -322,9 +324,12 @@ QAL_Shutdown()
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qalFilterf = NULL;
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qalDeleteFilters = NULL;
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if (handle)
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{
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/* Unload the shared lib */
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Sys_FreeLibrary(handle);
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handle = NULL;
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}
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}
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/*
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@ -334,9 +339,11 @@ QAL_Shutdown()
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qboolean
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QAL_Init()
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{
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al_device = Cvar_Get("al_device", "", CVAR_ARCHIVE);
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#ifdef DLOPEN_OPENAL
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/* DEFAULT_OPENAL_DRIVER is defined at compile time via the compiler */
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al_driver = Cvar_Get("al_driver", DEFAULT_OPENAL_DRIVER, CVAR_ARCHIVE);
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al_device = Cvar_Get("al_device", "", CVAR_ARCHIVE);
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Com_Printf("LoadLibrary(%s)\n", al_driver->string);
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@ -348,104 +355,109 @@ QAL_Init()
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Com_Printf("Loading %s failed! Disabling OpenAL.\n", al_driver->string);
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return false;
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}
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# define ALSYMBOL(handle, sym) Sys_GetProcAddress(handle, #sym)
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#else
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handle = NULL;
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# define ALSYMBOL(handle, sym) sym
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#endif
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/* Connect function pointers to management functions */
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qalcCreateContext = Sys_GetProcAddress(handle, "alcCreateContext");
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qalcMakeContextCurrent = Sys_GetProcAddress(handle, "alcMakeContextCurrent");
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qalcProcessContext = Sys_GetProcAddress(handle, "alcProcessContext");
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qalcSuspendContext = Sys_GetProcAddress(handle, "alcSuspendContext");
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qalcDestroyContext = Sys_GetProcAddress(handle, "alcDestroyContext");
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qalcGetCurrentContext = Sys_GetProcAddress(handle, "alcGetCurrentContext");
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qalcGetContextsDevice = Sys_GetProcAddress(handle, "alcGetContextsDevice");
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qalcOpenDevice = Sys_GetProcAddress(handle, "alcOpenDevice");
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qalcCloseDevice = Sys_GetProcAddress(handle, "alcCloseDevice");
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qalcGetError = Sys_GetProcAddress(handle, "alcGetError");
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qalcIsExtensionPresent = Sys_GetProcAddress(handle, "alcIsExtensionPresent");
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qalcGetProcAddress = Sys_GetProcAddress(handle, "alcGetProcAddress");
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qalcGetEnumValue = Sys_GetProcAddress(handle, "alcGetEnumValue");
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qalcGetString = Sys_GetProcAddress(handle, "alcGetString");
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qalcGetIntegerv = Sys_GetProcAddress(handle, "alcGetIntegerv");
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qalcCaptureOpenDevice = Sys_GetProcAddress(handle, "alcCaptureOpenDevice");
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qalcCaptureCloseDevice = Sys_GetProcAddress(handle, "alcCaptureCloseDevice");
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qalcCaptureStart = Sys_GetProcAddress(handle, "alcCaptureStart");
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qalcCaptureStop = Sys_GetProcAddress(handle, "alcCaptureStop");
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qalcCaptureSamples = Sys_GetProcAddress(handle, "alcCaptureSamples");
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qalcCreateContext = ALSYMBOL(handle, alcCreateContext);
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qalcMakeContextCurrent = ALSYMBOL(handle, alcMakeContextCurrent);
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qalcProcessContext = ALSYMBOL(handle, alcProcessContext);
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qalcSuspendContext = ALSYMBOL(handle, alcSuspendContext);
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qalcDestroyContext = ALSYMBOL(handle, alcDestroyContext);
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qalcGetCurrentContext = ALSYMBOL(handle, alcGetCurrentContext);
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qalcGetContextsDevice = ALSYMBOL(handle, alcGetContextsDevice);
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qalcOpenDevice = ALSYMBOL(handle, alcOpenDevice);
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qalcCloseDevice = ALSYMBOL(handle, alcCloseDevice);
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qalcGetError = ALSYMBOL(handle, alcGetError);
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qalcIsExtensionPresent = ALSYMBOL(handle, alcIsExtensionPresent);
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qalcGetProcAddress = ALSYMBOL(handle, alcGetProcAddress);
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qalcGetEnumValue = ALSYMBOL(handle, alcGetEnumValue);
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qalcGetString = ALSYMBOL(handle, alcGetString);
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qalcGetIntegerv = ALSYMBOL(handle, alcGetIntegerv);
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qalcCaptureOpenDevice = ALSYMBOL(handle, alcCaptureOpenDevice);
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qalcCaptureCloseDevice = ALSYMBOL(handle, alcCaptureCloseDevice);
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qalcCaptureStart = ALSYMBOL(handle, alcCaptureStart);
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qalcCaptureStop = ALSYMBOL(handle, alcCaptureStop);
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qalcCaptureSamples = ALSYMBOL(handle, alcCaptureSamples);
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/* Connect function pointers to
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to OpenAL API functions */
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qalEnable = Sys_GetProcAddress(handle, "alEnable");
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qalDisable = Sys_GetProcAddress(handle, "alDisable");
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qalIsEnabled = Sys_GetProcAddress(handle, "alIsEnabled");
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qalGetString = Sys_GetProcAddress(handle, "alGetString");
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qalGetBooleanv = Sys_GetProcAddress(handle, "alGetBooleanv");
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qalGetIntegerv = Sys_GetProcAddress(handle, "alGetIntegerv");
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qalGetFloatv = Sys_GetProcAddress(handle, "alGetFloatv");
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qalGetDoublev = Sys_GetProcAddress(handle, "alGetDoublev");
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qalGetBoolean = Sys_GetProcAddress(handle, "alGetBoolean");
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qalGetInteger = Sys_GetProcAddress(handle, "alGetInteger");
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qalGetFloat = Sys_GetProcAddress(handle, "alGetFloat");
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qalGetDouble = Sys_GetProcAddress(handle, "alGetDouble");
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qalGetError = Sys_GetProcAddress(handle, "alGetError");
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qalIsExtensionPresent = Sys_GetProcAddress(handle, "alIsExtensionPresent");
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qalGetProcAddress = Sys_GetProcAddress(handle, "alGetProcAddress");
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qalGetEnumValue = Sys_GetProcAddress(handle, "alGetEnumValue");
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qalListenerf = Sys_GetProcAddress(handle, "alListenerf");
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qalListener3f = Sys_GetProcAddress(handle, "alListener3f");
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qalListenerfv = Sys_GetProcAddress(handle, "alListenerfv");
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qalListeneri = Sys_GetProcAddress(handle, "alListeneri");
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qalListener3i = Sys_GetProcAddress(handle, "alListener3i");
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qalListeneriv = Sys_GetProcAddress(handle, "alListeneriv");
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qalGetListenerf = Sys_GetProcAddress(handle, "alGetListenerf");
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qalGetListener3f = Sys_GetProcAddress(handle, "alGetListener3f");
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qalGetListenerfv = Sys_GetProcAddress(handle, "alGetListenerfv");
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qalGetListeneri = Sys_GetProcAddress(handle, "alGetListeneri");
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qalGetListener3i = Sys_GetProcAddress(handle, "alGetListener3i");
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qalGetListeneriv = Sys_GetProcAddress(handle, "alGetListeneriv");
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qalGenSources = Sys_GetProcAddress(handle, "alGenSources");
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qalDeleteSources = Sys_GetProcAddress(handle, "alDeleteSources");
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qalIsSource = Sys_GetProcAddress(handle, "alIsSource");
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qalSourcef = Sys_GetProcAddress(handle, "alSourcef");
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qalSource3f = Sys_GetProcAddress(handle, "alSource3f");
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qalSourcefv = Sys_GetProcAddress(handle, "alSourcefv");
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qalSourcei = Sys_GetProcAddress(handle, "alSourcei");
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qalSource3i = Sys_GetProcAddress(handle, "alSource3i");
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qalSourceiv = Sys_GetProcAddress(handle, "alSourceiv");
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qalGetSourcef = Sys_GetProcAddress(handle, "alGetSourcef");
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qalGetSource3f = Sys_GetProcAddress(handle, "alGetSource3f");
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qalGetSourcefv = Sys_GetProcAddress(handle, "alGetSourcefv");
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qalGetSourcei = Sys_GetProcAddress(handle, "alGetSourcei");
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qalGetSource3i = Sys_GetProcAddress(handle, "alGetSource3i");
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qalGetSourceiv = Sys_GetProcAddress(handle, "alGetSourceiv");
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qalSourcePlayv = Sys_GetProcAddress(handle, "alSourcePlayv");
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qalSourceStopv = Sys_GetProcAddress(handle, "alSourceStopv");
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qalSourceRewindv = Sys_GetProcAddress(handle, "alSourceRewindv");
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qalSourcePausev = Sys_GetProcAddress(handle, "alSourcePausev");
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qalSourcePlay = Sys_GetProcAddress(handle, "alSourcePlay");
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qalSourceStop = Sys_GetProcAddress(handle, "alSourceStop");
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qalSourceRewind = Sys_GetProcAddress(handle, "alSourceRewind");
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qalSourcePause = Sys_GetProcAddress(handle, "alSourcePause");
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qalSourceQueueBuffers = Sys_GetProcAddress(handle, "alSourceQueueBuffers");
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qalSourceUnqueueBuffers = Sys_GetProcAddress(handle, "alSourceUnqueueBuffers");
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qalGenBuffers = Sys_GetProcAddress(handle, "alGenBuffers");
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qalDeleteBuffers = Sys_GetProcAddress(handle, "alDeleteBuffers");
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qalIsBuffer = Sys_GetProcAddress(handle, "alIsBuffer");
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qalBufferData = Sys_GetProcAddress(handle, "alBufferData");
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qalBufferf = Sys_GetProcAddress(handle, "alBufferf");
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qalBuffer3f = Sys_GetProcAddress(handle, "alBuffer3f");
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qalBufferfv = Sys_GetProcAddress(handle, "alBufferfv");
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qalBufferi = Sys_GetProcAddress(handle, "alBufferi");
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qalBuffer3i = Sys_GetProcAddress(handle, "alBuffer3i");
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qalBufferiv = Sys_GetProcAddress(handle, "alBufferiv");
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qalGetBufferf = Sys_GetProcAddress(handle, "alGetBufferf");
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qalGetBuffer3f = Sys_GetProcAddress(handle, "alGetBuffer3f");
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qalGetBufferfv = Sys_GetProcAddress(handle, "alGetBufferfv");
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qalGetBufferi = Sys_GetProcAddress(handle, "alGetBufferi");
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qalGetBuffer3i = Sys_GetProcAddress(handle, "alGetBuffer3i");
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qalGetBufferiv = Sys_GetProcAddress(handle, "alGetBufferiv");
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qalDopplerFactor = Sys_GetProcAddress(handle, "alDopplerFactor");
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qalDopplerVelocity = Sys_GetProcAddress(handle, "alDopplerVelocity");
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qalSpeedOfSound = Sys_GetProcAddress(handle, "alSpeedOfSound");
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qalDistanceModel = Sys_GetProcAddress(handle, "alDistanceModel");
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qalEnable = ALSYMBOL(handle, alEnable);
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qalDisable = ALSYMBOL(handle, alDisable);
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qalIsEnabled = ALSYMBOL(handle, alIsEnabled);
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qalGetString = ALSYMBOL(handle, alGetString);
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qalGetBooleanv = ALSYMBOL(handle, alGetBooleanv);
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qalGetIntegerv = ALSYMBOL(handle, alGetIntegerv);
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qalGetFloatv = ALSYMBOL(handle, alGetFloatv);
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qalGetDoublev = ALSYMBOL(handle, alGetDoublev);
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qalGetBoolean = ALSYMBOL(handle, alGetBoolean);
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qalGetInteger = ALSYMBOL(handle, alGetInteger);
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qalGetFloat = ALSYMBOL(handle, alGetFloat);
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qalGetDouble = ALSYMBOL(handle, alGetDouble);
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qalGetError = ALSYMBOL(handle, alGetError);
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qalIsExtensionPresent = ALSYMBOL(handle, alIsExtensionPresent);
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qalGetProcAddress = ALSYMBOL(handle, alGetProcAddress);
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qalGetEnumValue = ALSYMBOL(handle, alGetEnumValue);
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qalListenerf = ALSYMBOL(handle, alListenerf);
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qalListener3f = ALSYMBOL(handle, alListener3f);
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qalListenerfv = ALSYMBOL(handle, alListenerfv);
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qalListeneri = ALSYMBOL(handle, alListeneri);
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qalListener3i = ALSYMBOL(handle, alListener3i);
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qalListeneriv = ALSYMBOL(handle, alListeneriv);
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qalGetListenerf = ALSYMBOL(handle, alGetListenerf);
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qalGetListener3f = ALSYMBOL(handle, alGetListener3f);
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qalGetListenerfv = ALSYMBOL(handle, alGetListenerfv);
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qalGetListeneri = ALSYMBOL(handle, alGetListeneri);
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qalGetListener3i = ALSYMBOL(handle, alGetListener3i);
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qalGetListeneriv = ALSYMBOL(handle, alGetListeneriv);
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qalGenSources = ALSYMBOL(handle, alGenSources);
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qalDeleteSources = ALSYMBOL(handle, alDeleteSources);
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qalIsSource = ALSYMBOL(handle, alIsSource);
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qalSourcef = ALSYMBOL(handle, alSourcef);
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qalSource3f = ALSYMBOL(handle, alSource3f);
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qalSourcefv = ALSYMBOL(handle, alSourcefv);
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qalSourcei = ALSYMBOL(handle, alSourcei);
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qalSource3i = ALSYMBOL(handle, alSource3i);
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qalSourceiv = ALSYMBOL(handle, alSourceiv);
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qalGetSourcef = ALSYMBOL(handle, alGetSourcef);
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qalGetSource3f = ALSYMBOL(handle, alGetSource3f);
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qalGetSourcefv = ALSYMBOL(handle, alGetSourcefv);
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qalGetSourcei = ALSYMBOL(handle, alGetSourcei);
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qalGetSource3i = ALSYMBOL(handle, alGetSource3i);
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qalGetSourceiv = ALSYMBOL(handle, alGetSourceiv);
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qalSourcePlayv = ALSYMBOL(handle, alSourcePlayv);
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qalSourceStopv = ALSYMBOL(handle, alSourceStopv);
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qalSourceRewindv = ALSYMBOL(handle, alSourceRewindv);
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qalSourcePausev = ALSYMBOL(handle, alSourcePausev);
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qalSourcePlay = ALSYMBOL(handle, alSourcePlay);
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qalSourceStop = ALSYMBOL(handle, alSourceStop);
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qalSourceRewind = ALSYMBOL(handle, alSourceRewind);
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qalSourcePause = ALSYMBOL(handle, alSourcePause);
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qalSourceQueueBuffers = ALSYMBOL(handle, alSourceQueueBuffers);
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qalSourceUnqueueBuffers = ALSYMBOL(handle, alSourceUnqueueBuffers);
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qalGenBuffers = ALSYMBOL(handle, alGenBuffers);
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qalDeleteBuffers = ALSYMBOL(handle, alDeleteBuffers);
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qalIsBuffer = ALSYMBOL(handle, alIsBuffer);
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qalBufferData = ALSYMBOL(handle, alBufferData);
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qalBufferf = ALSYMBOL(handle, alBufferf);
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qalBuffer3f = ALSYMBOL(handle, alBuffer3f);
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qalBufferfv = ALSYMBOL(handle, alBufferfv);
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qalBufferi = ALSYMBOL(handle, alBufferi);
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qalBuffer3i = ALSYMBOL(handle, alBuffer3i);
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qalBufferiv = ALSYMBOL(handle, alBufferiv);
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qalGetBufferf = ALSYMBOL(handle, alGetBufferf);
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qalGetBuffer3f = ALSYMBOL(handle, alGetBuffer3f);
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qalGetBufferfv = ALSYMBOL(handle, alGetBufferfv);
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qalGetBufferi = ALSYMBOL(handle, alGetBufferi);
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qalGetBuffer3i = ALSYMBOL(handle, alGetBuffer3i);
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qalGetBufferiv = ALSYMBOL(handle, alGetBufferiv);
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qalDopplerFactor = ALSYMBOL(handle, alDopplerFactor);
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qalDopplerVelocity = ALSYMBOL(handle, alDopplerVelocity);
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qalSpeedOfSound = ALSYMBOL(handle, alSpeedOfSound);
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qalDistanceModel = ALSYMBOL(handle, alDistanceModel);
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/* Open the OpenAL device */
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Com_Printf("...opening OpenAL device:");
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@ -480,6 +480,20 @@ Sys_GetHomeDir(void)
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void *
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Sys_GetProcAddress(void *handle, const char *sym)
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{
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if (handle == NULL)
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{
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#ifdef RTLD_DEFAULT
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return dlsym(RTLD_DEFAULT, sym);
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#else
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/* POSIX suggests that this is a portable equivalent */
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static void *global_namespace = NULL;
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if (global_namespace == NULL)
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global_namespace = dlopen(NULL, RTLD_GLOBAL|RTLD_LAZY);
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return dlsym(global_namespace, sym);
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#endif
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}
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return dlsym(handle, sym);
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}
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Reference in a new issue