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alsa-lib/configure.ac
Takashi Iwai 54931e5a54 pcm: Add thread-safety to PCM API 
Traditionally, many of ALSA library functions are supposed to be
thread-unsafe, and applications are required to take care of thread
safety by themselves.  However, people never be careful enough, and
almost all applications fail in this regard.

This patch is an attempt to harden the thread safety in exported PCM
functions in a simplistic way: just wrap some of exported functions
with the pthread mutex of each PCM object.  Not all API functions are
wrapped by the mutex since it doesn't make sense.  Instead, the
patchset covers only the functions that may be likely called
concurrently.  The supposedly thread-safe API functions are marked in
the document.

For achieving the feature, two new fields are added snd_pcm_t when the
option is enabled: thread_safe and lock.  The former indicates that
the plugin is thread-safe that doesn't need this workaround and the
latter is the pthread mutex.  Currently only hw plugin have
thread_safe=1.  So, the most of real-time sensitive apps won't be
influenced by this patchset.

Although the patch covers most of PCM ops, a few snd_pcm_fast_ops are
left without the extra mutex locking: namely, the ones that may have
blocking behavior, i.e. resume, drain, readi, writei, readn and
writen.  These are supposed to handle own locking in the callbacks.

Also, if anyone wants to disable this new thread-safe API feature, it
can be still turned off via --disable-thread-safety configure option.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
2016-07-11 15:25:30 +02:00

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dnl Process this file with autoconf to produce a configure script.
AC_PREREQ(2.59)
AC_INIT(alsa-lib, 1.1.1)
AC_CONFIG_SRCDIR([src/control/control.c])
AC_CONFIG_MACRO_DIR([m4])
dnl *************************************************
dnl current:revision:age
dnl change (without API) = c:r+1:a
dnl change API = c+1:0:a
dnl add API = c+1:0:a+1
dnl remove API = c+1:0:0
dnl *************************************************
AC_CANONICAL_HOST
AM_INIT_AUTOMAKE
eval LIBTOOL_VERSION_INFO="2:0:0"
dnl *************************************************
AM_CONDITIONAL([INSTALL_M4], [test -n "${ACLOCAL}"])
AM_MAINTAINER_MODE([enable])
# Test for new silent rules and enable only if they are available
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AC_PREFIX_DEFAULT(/usr)
dnl Checks for programs.
AC_PROG_CC
AC_PROG_CPP
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_INSTALL
AC_PROG_LN_S
AC_DISABLE_STATIC
AC_LIBTOOL_DLOPEN
AM_PROG_LIBTOOL
CC_NOUNDEFINED
dnl Checks for header files.
AC_HEADER_STDC
AC_CONFIG_HEADERS(include/config.h)
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_HEADER_TIME
dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_CHECK_FUNCS([uselocale])
SAVE_LIBRARY_VERSION
AC_SUBST(LIBTOOL_VERSION_INFO)
test "x$prefix" = xNONE && prefix=$ac_default_prefix
dnl Do not build static and shared libraries together
if test "$enable_static" = "$enable_shared" -a "$enable_static" = "yes"; then
cat <<EOF
Please, do not try to compile static and shared libraries together.
See INSTALL file for more details (do not use --enable-shared=yes with
--enable-static=yes).
EOF
exit 1
fi
dnl ALSA configuration directory
AC_ARG_WITH(configdir,
AS_HELP_STRING([--with-configdir=dir],
[path where ALSA config files are stored]),
confdir="$withval", confdir="")
if test -z "$confdir"; then
eval dir="$datadir"
case "$dir" in
/*) ;;
*) dir="$prefix/share"
esac
confdir="$dir/alsa"
fi
ALSA_CONFIG_DIR="$confdir"
AC_DEFINE_UNQUOTED(ALSA_CONFIG_DIR, "$confdir", [directory containing ALSA configuration database])
AC_SUBST(ALSA_CONFIG_DIR)
dnl ALSA plugin directory
test "x$exec_prefix" = xNONE && exec_prefix=$prefix
AC_ARG_WITH(plugindir,
AS_HELP_STRING([--with-plugindir=dir],
[path where ALSA plugin files are stored]),
plugindir="$withval", plugindir="")
if test -z "$plugindir"; then
eval dir="$libdir"
case "$dir" in
/*) ;;
*) dir="$dir"
esac
plugindir="$dir/$PACKAGE"
fi
AC_DEFINE_UNQUOTED(ALSA_PLUGIN_DIR, "$plugindir", [directory containing ALSA add-on modules])
ALSA_PLUGIN_DIR="$plugindir"
AC_SUBST(ALSA_PLUGIN_DIR)
AC_ARG_WITH(pkgconfdir,
AS_HELP_STRING([--with-pkgconfdir=dir],
[path where pkgconfig files are stored]),
pkgconfdir="$withval", pkgconfdir="")
if test -z "$pkgconfdir"; then
eval dir="$libdir"
case "$dir" in
/*) ;;
*) dir="$dir"
esac
pkgconfdir="$dir/pkgconfig"
fi
AC_DEFINE_UNQUOTED(ALSA_PKGCONF_DIR, "$pkgconfdir", [directory containing pkgconfig files])
ALSA_PKGCONF_DIR="$pkgconfdir"
AC_SUBST(ALSA_PKGCONF_DIR)
dnl Check for versioned symbols
AC_MSG_CHECKING(for versioned symbols)
AC_ARG_WITH(versioned,
AS_HELP_STRING([--with-versioned],
[shared library will be compiled with versioned symbols (default = yes)]),
versioned="$withval", versioned="yes")
if test "$versioned" = "yes"; then
# it seems that GNU ld versions since 2.10 are not broken
xres=`grep '^VERSION=' ${srcdir}/ltmain.sh | cut -d = -f 2 | cut -d \" -f 2`
major=`echo $xres | cut -d . -f 1`
minor=`echo $xres | cut -d . -f 2`
pass=0
if test $major -eq 1 && test $minor -gt 3; then
pass=1
else
if test $major -gt 1; then
pass=1
fi
fi
if test $pass -eq 1; then
AC_DEFINE(VERSIONED_SYMBOLS,,[compiled with versioned symbols])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(broken libtool - use libtool v1.4+; no versions)
fi
else
AC_MSG_RESULT(no)
fi
AM_CONDITIONAL([VERSIONED_SYMBOLS], [test x$versioned = xyes])
dnl Check for symbolic-functions
AC_MSG_CHECKING(for symbolic-functions)
AC_ARG_ENABLE(symbolic-functions,
AS_HELP_STRING([--enable-symbolic-functions],
[use -Bsymbolic-functions option if available (optmization for size and speed)]),
symfuncs="$enableval", symfuncs="no")
if test "$symfuncs" = "yes"; then
if ld --help | grep -q -- '-Bsymbolic-functions'; then
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(not supported by ld)
symfuncs="no"
fi
else
AC_MSG_RESULT(no)
fi
AM_CONDITIONAL([SYMBOLIC_FUNCTIONS], [test x"$symfuncs" = xyes])
dnl See if toolchain has a custom prefix for symbols ...
AC_MSG_CHECKING(for custom symbol prefixes)
SYMBOL_PREFIX=` \
echo "PREFIX=__USER_LABEL_PREFIX__" \
| ${CPP-${CC-gcc} -E} - 2>&1 \
| ${EGREP-grep} "^PREFIX=" \
| ${SED-sed} "s:^PREFIX=::"`
AC_DEFINE_UNQUOTED([__SYMBOL_PREFIX], "$SYMBOL_PREFIX", [Toolchain Symbol Prefix])
AC_SUBST(SYMBOL_PREFIX)
AC_MSG_RESULT($SYMBOL_PREFIX)
dnl Check for debug...
AC_MSG_CHECKING(for debug)
AC_ARG_WITH(debug,
AS_HELP_STRING([--with-debug],
[library will be compiled with asserts (default = yes)]),
debug="$withval", debug="yes")
if test "$debug" = "yes"; then
AC_MSG_RESULT(yes)
else
AC_DEFINE(NDEBUG,,[No assert debug])
AC_MSG_RESULT(no)
fi
if test "$debug" = "yes"; then
AC_MSG_CHECKING(for debug assert)
AC_ARG_ENABLE(debug-assert,
AS_HELP_STRING([--enable-debug],
[enable assert call at the default error message handler]),
debug_assert="$enableval", debug_assert="no")
if test "$debug_assert" = "yes"; then
AC_MSG_RESULT(yes)
AC_DEFINE(ALSA_DEBUG_ASSERT,,[Enable assert at error message handler])
else
AC_MSG_RESULT(no)
fi
fi
dnl Temporary directory
AC_MSG_CHECKING(for tmpdir)
AC_ARG_WITH(tmpdir,
AS_HELP_STRING([--with-tmpdir=directory],
[directory to put tmp socket files (/tmp)]),
tmpdir="$withval", tmpdir="/tmp")
AC_MSG_RESULT($tmpdir)
AC_DEFINE_UNQUOTED(TMPDIR, "$tmpdir", [directory to put tmp socket files])
dnl Check for softfloat...
AC_MSG_CHECKING(for softfloat)
AC_ARG_WITH(softfloat,
AS_HELP_STRING([--with-softfloat],
[do you have floating point unit on this machine? (optional)]),
[case "$withval" in
y|yes) softfloat=yes ;;
*) softfloat=no ;;
esac],)
if test "$softfloat" = "yes" ; then
AC_DEFINE(HAVE_SOFT_FLOAT, "1", [Avoid calculation in float])
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
ALSA_DEPLIBS=""
if test "$softfloat" != "yes"; then
ALSA_DEPLIBS="-lm"
fi
dnl Check for libdl
AC_MSG_CHECKING(for libdl)
AC_ARG_WITH(libdl,
AS_HELP_STRING([--with-libdl], [Use libdl for plugins (default = yes)]),
[ have_libdl="$withval" ], [ have_libdl="yes" ])
HAVE_LIBDL=
if test "$have_libdl" = "yes"; then
AC_CHECK_LIB([dl], [dlsym], [HAVE_LIBDL="yes"])
if test "$HAVE_LIBDL" = "yes" ; then
ALSA_DEPLIBS="$ALSA_DEPLIBS -ldl"
AC_DEFINE([HAVE_LIBDL], 1, [Have libdl])
fi
else
AC_MSG_RESULT(no)
fi
AM_CONDITIONAL([BUILD_MODULES], [test "$HAVE_LIBDL" = "yes"])
dnl Check for pthread
AC_MSG_CHECKING(for pthread)
AC_ARG_WITH(pthread,
AS_HELP_STRING([--with-pthread], [Use pthread (default = yes)]),
[ have_pthread="$withval" ], [ have_pthread="yes" ])
if test "$have_pthread" = "yes"; then
AC_CHECK_LIB([pthread], [pthread_join], [HAVE_LIBPTHREAD="yes"])
if test "$HAVE_LIBPTHREAD" = "yes"; then
ALSA_DEPLIBS="$ALSA_DEPLIBS -lpthread"
AC_DEFINE([HAVE_LIBPTHREAD], 1, [Have libpthread])
fi
else
AC_MSG_RESULT(no)
fi
dnl Check for __thread
AC_MSG_CHECKING([for __thread])
AC_LINK_IFELSE([AC_LANG_PROGRAM([#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && ((__GNUC__ < 4) || (__GNUC__ == 4 && __GNUC_MINOR__ < 1) || (__GNUC__ == 4 && __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ < 2))
#error gcc has this bug: http://gcc.gnu.org/ml/gcc-bugs/2006-09/msg02275.html
#endif], [static __thread int p = 0])],
[AC_DEFINE(HAVE___THREAD, 1,
Define to 1 if compiler supports __thread)
AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])])
dnl Check for librt
AC_MSG_CHECKING(for librt)
AC_ARG_WITH(librt,
AS_HELP_STRING([--with-librt], [Use librt for monotonic clock (default = yes)]),
[ have_librt="$withval" ], [ have_librt="yes" ])
if test "$have_librt" = "yes"; then
AC_CHECK_LIB([rt], [clock_gettime], [HAVE_LIBRT="yes"])
if test "$HAVE_LIBRT" = "yes" ; then
ALSA_DEPLIBS="$ALSA_DEPLIBS -lrt"
AC_DEFINE([HAVE_LIBRT], 1, [Have librt])
AC_DEFINE([HAVE_CLOCK_GETTIME], 1, [Have clock gettime])
fi
else
AC_MSG_RESULT(no)
fi
AC_SUBST(ALSA_DEPLIBS)
dnl Check for headers
AC_CHECK_HEADERS([wordexp.h endian.h sys/endian.h sys/shm.h])
dnl Check for resmgr support...
AC_MSG_CHECKING(for resmgr support)
AC_ARG_ENABLE(resmgr,
AS_HELP_STRING([--enable-resmgr], [support resmgr (optional)]),
resmgr="$enableval", resmgr="no")
AC_MSG_RESULT($resmgr)
if test "$resmgr" = "yes"; then
AC_CHECK_LIB(resmgr, rsm_open_device,,
AC_ERROR([Cannot find libresmgr]))
AC_DEFINE(SUPPORT_RESMGR, "1", [Support resmgr with alsa-lib])
fi
dnl Check for aload* support...
AC_MSG_CHECKING(for aload* support)
AC_ARG_ENABLE(aload,
AS_HELP_STRING([--disable-aload], [disable reading /dev/aload*]),
aload="$enableval", aload="yes")
AC_MSG_RESULT($aload)
if test "$aload" = "yes"; then
AC_DEFINE(SUPPORT_ALOAD, "1", [Support /dev/aload* access for auto-loading])
fi
dnl Check for non-standard /dev directory
AC_MSG_CHECKING([for ALSA device file directory])
AC_ARG_WITH(alsa-devdir,
AS_HELP_STRING([--with-alsa-devdir=dir],
[directory with ALSA device files (default /dev/snd)]),
[alsa_dev_dir="$withval"],
[alsa_dev_dir="/dev/snd"])
dnl make sure it has a trailing slash
if echo "$alsa_dev_dir" | grep -v '/$' > /dev/null; then
alsa_dev_dir="$alsa_dev_dir/"
fi
AC_DEFINE_UNQUOTED(ALSA_DEVICE_DIRECTORY, "$alsa_dev_dir", [Directory with ALSA device files])
AC_MSG_RESULT([$alsa_dev_dir])
AC_MSG_CHECKING([for aload* device file directory])
AC_ARG_WITH(aload-devdir,
AS_HELP_STRING([--with-aload-devdir=dir],
[directory with aload* device files (default /dev)]),
[aload_dev_dir="$withval"],
[aload_dev_dir="/dev"])
if echo "$aload_dev_dir" | grep -v '/$' > /dev/null; then
aload_dev_dir="$aload_dev_dir/"
fi
AC_DEFINE_UNQUOTED(ALOAD_DEVICE_DIRECTORY, "$aload_dev_dir", [Directory with aload* device files])
AC_MSG_RESULT([$aload_dev_dir])
dnl Build conditions
AC_ARG_ENABLE(mixer,
AS_HELP_STRING([--disable-mixer], [disable the mixer component]),
[build_mixer="$enableval"], [build_mixer="yes"])
AC_ARG_ENABLE(pcm,
AS_HELP_STRING([--disable-pcm], [disable the PCM component]),
[build_pcm="$enableval"], [build_pcm="yes"])
AC_ARG_ENABLE(rawmidi,
AS_HELP_STRING([--disable-rawmidi], [disable the raw MIDI component]),
[build_rawmidi="$enableval"], [build_rawmidi="yes"])
AC_ARG_ENABLE(hwdep,
AS_HELP_STRING([--disable-hwdep], [disable the hwdep component]),
[build_hwdep="$enableval"], [build_hwdep="yes"])
AC_ARG_ENABLE(seq,
AS_HELP_STRING([--disable-seq], [disable the sequencer component]),
[build_seq="$enableval"], [build_seq="yes"])
AC_ARG_ENABLE(ucm,
AS_HELP_STRING([--disable-ucm], [disable the use-case-manager component]),
[build_ucm="$enableval"], [build_ucm="yes"])
AC_ARG_ENABLE(topology,
AS_HELP_STRING([--disable-topology], [disable the DSP topology component]),
[build_topology="$enableval"], [build_topology="yes"])
AC_ARG_ENABLE(alisp,
AS_HELP_STRING([--disable-alisp], [disable the alisp component]),
[build_alisp="$enableval"], [build_alisp="yes"])
test "$softfloat" = "yes" && build_alisp="no"
AC_ARG_ENABLE(old-symbols,
AS_HELP_STRING([--disable-old-symbols], [disable old obsoleted symbols]),
[keep_old_symbols="$enableval"], [keep_old_symbols="yes"])
AM_CONDITIONAL([KEEP_OLD_SYMBOLS], [test x$keep_old_symbols = xyes])
AC_ARG_ENABLE(python,
AS_HELP_STRING([--disable-python], [disable the python components]),
[build_python="$enableval"], [build_python="yes"])
PYTHON_LIBS=""
PYTHON_INCLUDES=""
if test "$build_python" = "yes"; then
AC_ARG_WITH(pythonlibs,
AS_HELP_STRING([--with-pythonlibs=ldflags],
[specify python libraries (-lpthread -lm -ldl -lpython2.4)]),
pythonlibs="$withval", pythonlibs=`python-config --libs`)
AC_ARG_WITH(pythonincludes,
AS_HELP_STRING([--with-pythonincludes=Cflags],
[specify python C header files (-I/usr/include/python)]),
pythonincludes="$withval", pythonincludes=`python-config --includes`)
if test -z "$pythonlibs"; then
echo "Unable to determine python libraries! Probably python-config is not"
echo "available on this system. Please, use --with-pythonlibs and"
echo "--with-pythonincludes options. Python components are disabled in this build."
build_python="no"
else
PYTHON_LIBS="$pythonlibs"
PYTHON_INCLUDES="$pythonincludes"
fi
fi
AC_SUBST(PYTHON_LIBS)
AC_SUBST(PYTHON_INCLUDES)
AM_CONDITIONAL([BUILD_MIXER], [test x$build_mixer = xyes])
AM_CONDITIONAL([BUILD_PCM], [test x$build_pcm = xyes])
AM_CONDITIONAL([BUILD_RAWMIDI], [test x$build_rawmidi = xyes])
AM_CONDITIONAL([BUILD_HWDEP], [test x$build_hwdep = xyes])
AM_CONDITIONAL([BUILD_SEQ], [test x$build_seq = xyes])
AM_CONDITIONAL([BUILD_UCM], [test x$build_ucm = xyes])
AM_CONDITIONAL([BUILD_TOPOLOGY], [test x$build_topology = xyes])
AM_CONDITIONAL([BUILD_ALISP], [test x$build_alisp = xyes])
AM_CONDITIONAL([BUILD_PYTHON], [test x$build_python = xyes])
if test "$build_mixer" = "yes"; then
AC_DEFINE([BUILD_MIXER], "1", [Build mixer component])
fi
if test "$build_pcm" = "yes"; then
AC_DEFINE([BUILD_PCM], "1", [Build PCM component])
fi
if test "$build_rawmidi" = "yes"; then
AC_DEFINE([BUILD_RAWMIDI], "1", [Build raw MIDI component])
fi
if test "$build_hwdep" = "yes"; then
AC_DEFINE([BUILD_HWDEP], "1", [Build hwdep component])
fi
if test "$build_seq" = "yes"; then
AC_DEFINE([BUILD_SEQ], "1", [Build sequencer component])
fi
if test "$build_ucm" = "yes"; then
AC_DEFINE([BUILD_UCM], "1", [Build UCM component])
fi
if test "$build_topology" = "yes"; then
AC_DEFINE([BUILD_TOPOLOGY], "1", [Build DSP Topology component])
fi
dnl PCM Plugins
if test "$build_pcm" = "yes"; then
AC_ARG_WITH(pcm-plugins,
AS_HELP_STRING([--with-pcm-plugins=<list>],
[build PCM plugins (default = all)]),
[pcm_plugins="$withval"], [pcm_plugins="all"])
else
pcm_plugins=""
fi
dnl check atomics for pcm_meter
AC_MSG_CHECKING([whether GCC supports builtin atomic intrinsics])
if test -z "$gcc_have_atomics"; then
gcc_have_atomics=no
AC_TRY_LINK([],
[int i;
__atomic_load_n(&i, __ATOMIC_SEQ_CST);
__atomic_add_fetch(&i, 0, __ATOMIC_SEQ_CST);
],
[gcc_have_atomics=yes],
[gcc_have_atomics=no])
fi
AC_MSG_RESULT($gcc_have_atomics)
PCM_PLUGIN_LIST="copy linear route mulaw alaw adpcm rate plug multi shm file null empty share meter hooks lfloat ladspa dmix dshare dsnoop asym iec958 softvol extplug ioplug mmap_emul"
build_pcm_plugin="no"
for t in $PCM_PLUGIN_LIST; do
eval build_pcm_$t="no"
done
pcm_plugins=`echo $pcm_plugins | sed 's/,/ /g'`
for p in $pcm_plugins; do
for t in $PCM_PLUGIN_LIST; do
if test "$p" = "$t" -o "$p" = "all"; then
eval build_pcm_$t="yes"
build_pcm_plugin="yes"
fi
done
done
dnl special dependencies
if test "$build_pcm_plug" = "yes"; then
build_pcm_linear="yes"
build_pcm_copy="yes"
fi
if test "$build_pcm_ioplug" = "yes"; then
build_pcm_extplug="yes"
fi
if test "$HAVE_LIBDL" != "yes"; then
build_pcm_meter="no"
build_pcm_ladspa="no"
build_pcm_pcm_ioplug="no"
build_pcm_pcm_extplug="no"
fi
if test "$HAVE_LIBPTHREAD" != "yes"; then
build_pcm_share="no"
fi
if test "$softfloat" = "yes"; then
build_pcm_lfloat="no"
build_pcm_ladspa="no"
fi
if test "$gcc_have_atomics" != "yes"; then
build_pcm_meter="no"
fi
if test "$ac_cv_header_sys_shm_h" != "yes"; then
build_pcm_dmix="no"
build_pcm_dshare="no"
build_pcm_dsnoop="no"
build_pcm_shm="no"
fi
AM_CONDITIONAL([BUILD_PCM_PLUGIN], [test x$build_pcm_plugin = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_COPY], [test x$build_pcm_copy = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_LINEAR], [test x$build_pcm_linear = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_ROUTE], [test x$build_pcm_route = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_MULAW], [test x$build_pcm_mulaw = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_ALAW], [test x$build_pcm_alaw = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_ADPCM], [test x$build_pcm_adpcm = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_RATE], [test x$build_pcm_rate = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_PLUG], [test x$build_pcm_plug = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_MULTI], [test x$build_pcm_multi = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_SHM], [test x$build_pcm_shm = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_FILE], [test x$build_pcm_file = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_NULL], [test x$build_pcm_null = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_EMPTY], [test x$build_pcm_empty = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_SHARE], [test x$build_pcm_share = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_METER], [test x$build_pcm_meter = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_HOOKS], [test x$build_pcm_hooks = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_LFLOAT], [test x$build_pcm_lfloat = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_LADSPA], [test x$build_pcm_ladspa = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_DMIX], [test x$build_pcm_dmix = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_DSHARE], [test x$build_pcm_dshare = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_DSNOOP], [test x$build_pcm_dsnoop = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_ASYM], [test x$build_pcm_asym = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_IEC958], [test x$build_pcm_iec958 = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_SOFTVOL], [test x$build_pcm_softvol = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_EXTPLUG], [test x$build_pcm_extplug = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_IOPLUG], [test x$build_pcm_ioplug = xyes])
AM_CONDITIONAL([BUILD_PCM_PLUGIN_MMAP_EMUL], [test x$build_pcm_mmap_emul = xyes])
dnl Defines for plug plugin
if test "$build_pcm_rate" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_RATE], "1", [Build PCM rate plugin])
fi
if test "$build_pcm_route" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_ROUTE], "1", [Build PCM route plugin])
fi
if test "$build_pcm_lfloat" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_LFLOAT], "1", [Build PCM lfloat plugin])
fi
if test "$build_pcm_adpcm" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_ADPCM], "1", [Build PCM adpcm plugin])
fi
if test "$build_pcm_mulaw" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_MULAW], "1", [Build PCM mulaw plugin])
fi
if test "$build_pcm_alaw" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_ALAW], "1", [Build PCM alaw plugin])
fi
if test "$build_pcm_mmap_emul" = "yes"; then
AC_DEFINE([BUILD_PCM_PLUGIN_MMAP_EMUL], "1", [Build PCM mmap-emul plugin])
fi
dnl Create PCM plugin symbol list for static library
rm -f "$srcdir"/src/pcm/pcm_symbols_list.c
touch "$srcdir"/src/pcm/pcm_symbols_list.c
for t in $PCM_PLUGIN_LIST; do
if eval test \$build_pcm_$t = yes; then
echo \&_snd_module_pcm_$t, >> "$srcdir"/src/pcm/pcm_symbols_list.c
fi
done
dnl Control Plugins
AC_ARG_WITH(ctl-plugins,
AS_HELP_STRING([--with-ctl-plugins=<list>],
[build control plugins (default = all)]),
[ctl_plugins="$withval"], [ctl_plugins="all"])
CTL_PLUGIN_LIST="shm ext"
build_ctl_plugin="no"
for t in $CTL_PLUGIN_LIST; do
eval build_ctl_$t="no"
done
ctl_plugins=`echo $ctl_plugins | sed 's/,/ /g'`
for p in $ctl_plugins; do
for t in $CTL_PLUGIN_LIST; do
if test "$p" = "$t" -o "$p" = "all"; then
eval build_ctl_$t="yes"
build_ctl_plugin="yes"
fi
done
done
if test "$ac_cv_header_sys_shm_h" != "yes"; then
build_ctl_shm="no"
fi
AM_CONDITIONAL([BUILD_CTL_PLUGIN], [test x$build_ctl_plugin = xyes])
AM_CONDITIONAL([BUILD_CTL_PLUGIN_SHM], [test x$build_ctl_shm = xyes])
AM_CONDITIONAL([BUILD_CTL_PLUGIN_EXT], [test x$build_ctl_ext = xyes])
dnl Create ctl plugin symbol list for static library
rm -f "$srcdir"/src/control/ctl_symbols_list.c
touch "$srcdir"/src/control/ctl_symbols_list.c
for t in $CTL_PLUGIN_LIST; do
if eval test \$build_ctl_$t = yes; then
echo \&_snd_module_control_$t, >> "$srcdir"/src/control/ctl_symbols_list.c
fi
done
dnl Max number of cards
AC_MSG_CHECKING(for max number of cards)
AC_ARG_WITH(max-cards,
AS_HELP_STRING([--with-max-cards], [Specify the max number of cards (default = 32)]),
[ max_cards="$withval" ], [ max_cards="32" ])
AC_MSG_RESULT([$max_cards])
if test "$max_cards" -lt 1; then
AC_ERROR([Invalid max cards $max_cards])
elif test "$max_cards" -gt 256; then
AC_ERROR([Invalid max cards $max_cards])
fi
AC_DEFINE_UNQUOTED(SND_MAX_CARDS, $max_cards, [Max number of cards])
dnl Check for thread-safe API functions
if test "$HAVE_LIBPTHREAD" = "yes"; then
AC_MSG_CHECKING(for thread-safe API functions)
AC_ARG_ENABLE(thread-safety,
AS_HELP_STRING([--disable-thread-safety],
[disable thread-safe API functions]),
threadsafe="$enableval", threadsafe="yes")
if test "$threadsafe" = "yes"; then
AC_MSG_RESULT(yes)
AC_DEFINE([THREAD_SAFE_API], "1", [Disable thread-safe API functions])
else
AC_MSG_RESULT(no)
fi
fi
dnl Make a symlink for inclusion of alsa/xxx.h
if test ! -L "$srcdir"/include/alsa ; then
echo "Making a symlink include/alsa"
rm -f "$srcdir"/include/alsa
ln -sf . "$srcdir"/include/alsa
fi
AC_OUTPUT(Makefile doc/Makefile doc/pictures/Makefile doc/doxygen.cfg \
include/Makefile include/sound/Makefile src/Versions src/Makefile \
src/control/Makefile src/mixer/Makefile \
src/pcm/Makefile src/pcm/scopes/Makefile \
src/rawmidi/Makefile src/timer/Makefile \
src/hwdep/Makefile src/seq/Makefile src/ucm/Makefile \
src/alisp/Makefile src/topology/Makefile \
src/conf/Makefile src/conf/alsa.conf.d/Makefile \
src/conf/cards/Makefile \
src/conf/pcm/Makefile \
src/conf/ucm/Makefile \
src/conf/ucm/DAISY-I2S/Makefile \
src/conf/ucm/PandaBoard/Makefile \
src/conf/ucm/PandaBoardES/Makefile \
src/conf/ucm/SDP4430/Makefile \
src/conf/ucm/tegraalc5632/Makefile \
src/conf/ucm/PAZ00/Makefile \
src/conf/ucm/GoogleNyan/Makefile \
src/conf/ucm/broadwell-rt286/Makefile \
src/conf/ucm/VEYRON-I2S/Makefile \
src/conf/ucm/chtrt5645/Makefile \
src/conf/topology/Makefile \
src/conf/topology/broadwell/Makefile \
modules/Makefile modules/mixer/Makefile modules/mixer/simple/Makefile \
src/conf/topology/sklrt286/data/Makefile \
src/conf/topology/sklrt286/Makefile \
alsalisp/Makefile aserver/Makefile \
test/Makefile test/lsb/Makefile \
utils/Makefile utils/alsa-lib.spec utils/alsa.pc)
dnl Create asoundlib.h dynamically according to configure options
echo "Creating asoundlib.h..."
cp "$srcdir"/include/asoundlib-head.h include/asoundlib.h
test "$ac_cv_header_endian_h" = "yes" && echo "#include <endian.h>" >> include/asoundlib.h
if test "$ac_cv_header_sys_endian_h" = "yes"; then
cat >> include/asoundlib.h <<EOF
#include <sys/endian.h>
#ifndef __BYTE_ORDER
#define __BYTE_ORDER BYTE_ORDER
#endif
#ifndef __LITTLE_ENDIAN
#define __LITTLE_ENDIAN LITTLE_ENDIAN
#endif
#ifndef __BIG_ENDIAN
#define __BIG_ENDIAN BIG_ENDIAN
#endif
EOF
fi
cat >> include/asoundlib.h <<EOF
#ifndef __GNUC__
#define __inline__ inline
#endif
#include <alsa/asoundef.h>
#include <alsa/version.h>
#include <alsa/global.h>
#include <alsa/input.h>
#include <alsa/output.h>
#include <alsa/error.h>
#include <alsa/conf.h>
EOF
test "$build_pcm" = "yes" && echo "#include <alsa/pcm.h>" >> include/asoundlib.h
test "$build_rawmidi" = "yes" && echo "#include <alsa/rawmidi.h>" >> include/asoundlib.h
test "$build_pcm" = "yes" && echo "#include <alsa/timer.h>" >> include/asoundlib.h
test "$build_hwdep" = "yes" && echo "#include <alsa/hwdep.h>" >> include/asoundlib.h
echo "#include <alsa/control.h>" >> include/asoundlib.h
test "$build_mixer" = "yes" && echo "#include <alsa/mixer.h>" >> include/asoundlib.h
test "$build_seq" = "yes" && echo "#include <alsa/seq_event.h>" >> include/asoundlib.h
test "$build_seq" = "yes" && echo "#include <alsa/seq.h>" >> include/asoundlib.h
test "$build_seq" = "yes" && echo "#include <alsa/seqmid.h>" >> include/asoundlib.h
test "$build_seq" = "yes" && echo "#include <alsa/seq_midi_event.h>" >> include/asoundlib.h
cat "$srcdir"/include/asoundlib-tail.h >> include/asoundlib.h
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