SDL doesn't guarantee that the target audio buffer passed in its callback is
initialized to zero (silence). SDL_MixAudio may now try to mix the random data
from the dst buffer and the new data from the src buffer together and creating
distorted sound in this process.
Initializing the destination buffer to zero avoids this problem.
n.pepinpe requested in #540 to allow overwriting the automatically searched
CFLAGS and LIBS for used libraries. This should allow distributors to set the
build configuration without patching the makefile. This is important for
systems were pkg-config or sdl-config aren't normally used.
n.pepinpe requested in #540 to allow overwriting the automatically searched
CFLAGS and LIBS for used libraries. This should allow distributors to set the
build configuration without patching the makefile. This is important for
systems were pkg-config or sdl-config aren't normally used.
The GCC introduced Link-time optimization in GCC 4.5 (2010-04-14). This should
be long enough available that interested users have upgraded to a compiler
supporting it.
The MSVC project already enabled WholeProgramOptimization since a long time.
Enabling it by default in GCC seems to be equally valid.
The GCC manual states for different parameters that the options for compilation
must also be used when linking. The options for compilation are stored in
CFLAGS and added to LINK.o to fix the behavior.
Option which need this are for example -fPIC/-fPIE or -flto.
The POSTFIX make option is useful for distributions to compile different
versions of the plugin in parallel. The object files will be stored in a
directory with the postfix appended and the linker result will also have this
postfix appended.
The CROSS_COMPILE make option can be used to automatically prepend the prefix
to all build relevant tools to seamlessly allow cross compilation without
setting each tool name separately.
Cross compiling for MinGW32 would can be done using
$ make -C projects/unix/ CROSS_COMPILE=i686-pc-mingw32- HOST_CPU=i686 UNAME=MINGW
- Bugfix: Don't assume OSS is installed in all linux systems.
- Bugfix: Some combinations of VolumeSetLevel and VolumeMute caused VolumeGetString to return Mute when not muted
- Make SDL volume handling the default, since OSS is no longer included in the kernel.
- Minor refactoring of volume handling code.
Personally, I would drop OSS support altogether, since it's deprecated (and some 'user-friendly' distros don't have it enabled by default, e.g. Ubuntu), and it changes the master volume level and 'remembers' it when muted (what if two programs did this?).
nogagplz tested mupen64plus on 32-bit ppc and didn't detect any big show
stoppers with interpreter cores and the mupen64plus example rom. This makes the
PowerPC an interesting target for further tests and may reveal other endianness
problems.
nogagplz noticed on ppc32 that PIC is necessary to compile everything as shared
object. Therefore, it seems to be a better idea to have architecture specific
PIC default settings instead of checking only whether it is a 32 or 64 bit
architecture.
