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ALSA library installation
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=========================
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Installation from tarbal
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------------------------
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For installation you can use these commands:
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Compilation from CVS sources
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----------------------------
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You need also GNU packages automake and libtool installed in your system
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to compile CVS sources of alsa-lib package.
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For compilation you can use these commands:
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libtoolize --force --copy --automake
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automake --foreign --copy --add-missing
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The included cvscompile script does this job for you.
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Note: Some automake packages have missing aclocal program. Use newer version
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Compilation of static library
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-----------------------------
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If you would like to use the static ALSA library, you need to use these
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options for the configure script:
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./configure --enable-shared=no --enable-static=yes
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Unfortunately, due to bug in the libtool script, the shared and static
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library cannot be built together.
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Configuration for cross-compilation
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-----------------------------------
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When you would like to cross-compile ALSA library (e.g. compile on
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i686 host but for arm architecture) you will need to call ./configure
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script with aditional parameters:
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CC=arm-linux-gcc ./configure --target=arm-linux
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In this example host where the library is build is guessed (should be
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given with --host=platform) and target for which is the library build is
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Linux on ARM architecture. You should ommit setting 'CC' variable and
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cross-compiler will be guessed too.
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So simplest version would be:
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./configure --target=arm-linux
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For platform names in the form cpu-vendor-os (or aliases for this)
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you should look in 'config.guess' script. Target and all paths
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used here are only examples and should not be directly applicable to
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Configuration for machines without FPU
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--------------------------------------
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If your machine does not have FP unit, you should use '--with-softfloat'
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option. This option disables usage of float numbers in PCM route plugin.
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ALSA could then leave much more CPU cycles for your applications, but you
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could still need some floating point emulator.
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To build the jack pcm plugin, use this sequence:
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cd alsa-lib/src/pcm/ext
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The default directory for add-on modules is ${prefix}/lib/alsa-lib.
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