ref: 71adeb9f5af77168aa4db5dc232ff29511c23310
dir: /configure.ac/
dnl Process this file with autoconf to produce a configure script. -*-m4-*-
dnl The package_version file will be automatically synced to the git revision
dnl by the update_version script when configured in the repository, but will
dnl remain constant in tarball releases unless it is manually edited.
m4_define([CURRENT_VERSION],
m4_esyscmd([ if test -e package_version || ./update_version; then
. ./package_version
printf "$PACKAGE_VERSION"
else
printf "unknown"
fi ]))
AC_INIT([opus-tools],[CURRENT_VERSION],[opus@xiph.org])
AC_CONFIG_SRCDIR([src/opusenc.c])
AC_CONFIG_MACRO_DIR([m4])
dnl enable silent rules on automake 1.11 and later
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
AM_INIT_AUTOMAKE([1.11 foreign no-define])
AM_MAINTAINER_MODE([enable])
AC_CANONICAL_HOST
AM_PROG_CC_C_O
AC_PROG_CC_C99
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
#Use a hacked up version of autoconf's AC_C_RESTRICT because it's not
#strong enough a test to detect old buggy versions of GCC (e.g. 2.95.3)
AC_CACHE_CHECK([for C/C++ restrict keyword], ac_cv_c_restrict,
[ac_cv_c_restrict=no
# The order here caters to the fact that C++ does not require restrict.
for ac_kw in __restrict __restrict__ _Restrict restrict; do
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[typedef int * int_ptr;
int foo (int_ptr $ac_kw ip, int * $ac_kw baz[]) {
return ip[0];
}]],
[[int s[1];
int * $ac_kw t = s;
t[0] = 0;
return foo(t, (void *)0)]])],
[ac_cv_c_restrict=$ac_kw])
test "$ac_cv_c_restrict" != no && break
done
])
AH_VERBATIM([restrict],
[/* Define to the equivalent of the C99 'restrict' keyword, or to
nothing if this is not supported. Do not define if restrict is
supported directly. */
#undef restrict
/* Work around a bug in Sun C++: it does not support _Restrict or
__restrict__, even though the corresponding Sun C compiler ends up with
"#define restrict _Restrict" or "#define restrict __restrict__" in the
previous line. Perhaps some future version of Sun C++ will work with
restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
#if defined __SUNPRO_CC && !defined __RESTRICT
# define _Restrict
# define __restrict__
#endif])
case $ac_cv_c_restrict in
restrict) ;;
no) AC_DEFINE([restrict], []) ;;
*) AC_DEFINE_UNQUOTED([restrict], [$ac_cv_c_restrict]) ;;
esac
AC_MSG_CHECKING(for C99 variable-size arrays)
AC_TRY_COMPILE([], [static int x; char a[++x]; a[sizeof a - 1] = 0; int N; return a[0];],
[ has_var_arrays=yes
AC_DEFINE([VAR_ARRAYS], [1], [Use C99 variable-size arrays])
],[
has_var_arrays=no
])
AC_MSG_RESULT([$has_var_arrays])
AC_CHECK_LIB([winmm], [main])
AC_ARG_ENABLE([assertions],
[AS_HELP_STRING([--enable-assertions],[enable additional software error checking])],,
[enable_assertions=no])
AS_IF([test "$enable_assertions" = "yes"], [
AC_DEFINE([ENABLE_ASSERTIONS], [1], [Assertions])
])
if test "$CFLAGS" = "-g -O2"; then
saved_CFLAGS="$CFLAGS"
CFLAGS="-O3 -ffast-math"
AC_MSG_CHECKING([if ${CC} supports -O3 -g -ffast-math])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
[ AC_MSG_RESULT([yes])
saved_CFLAGS="-O3 -g -ffast-math"
],[
AC_MSG_RESULT([no])
])
CFLAGS="$saved_CFLAGS"
fi
dnl check for pkg-config itself so we don't try the m4 macro without pkg-config
AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
dnl check for Ogg
AS_IF([test "$HAVE_PKG_CONFIG" = "yes"],
dnl first try via pkg-config
[PKG_CHECK_MODULES([OGG],[ogg >= 1.3])],
[
dnl fall back to the old school test
XIPH_PATH_OGG(, AC_MSG_ERROR([
libogg is required to build this package!
please see http://www.xiph.org/ for how to
obtain a copy.
]))
saved_CFLAGS="$CFLAGS"
saved_LIBS="$LIBS"
CFLAGS="$CFLAGS $OGG_CFLAGS"
LIBS="$LIBS $OGG_LIBS"
AC_CHECK_FUNC([ogg_stream_flush_fill],,[
AC_MSG_ERROR([newer libogg version (1.3 or later) required])
])
CFLAGS="$saved_CFLAGS"
LIBS="$saved_LIBS"
])
dnl check for Opus
AS_IF([test "$HAVE_PKG_CONFIG" = "yes"],
[PKG_CHECK_MODULES([OPUS],[opus >= 0.9.10])],
[
dnl fall back to the old school test
XIPH_PATH_OPUS(, AC_MSG_ERROR([
Opus is required to build this package!
please see http://opus-codec.org/ for how to
obtain a copy.
]))
CFLAGS="$CFLAGS $OPUS_CFLAGS"
LIBS="$LIBS $OPUS_LIBS"
])
dnl check for OSS
HAVE_OSS=no
AC_CHECK_HEADERS([sys/soundcard.h soundcard.h machine/soundcard.h],[
HAVE_OSS=yes
break
])
dnl check for sndio
AC_CHECK_LIB([sndio], [sio_open])
if test "$HAVE_OSS" != "yes" && test "$ac_cv_lib_sndio_sio_open" != "yes"; then
AC_MSG_WARN([Audio support not found -- no direct audio output in opusdec])
fi
dnl check for flac
AC_ARG_WITH([flac],
[AS_HELP_STRING([--without-flac],[disable FLAC support])],,
[with_flac=yes])
AS_IF([test "$with_flac" = "yes"],
[
AS_IF([test "$HAVE_PKG_CONFIG" = "yes"],
[PKG_CHECK_MODULES([FLAC],[flac >= 1.1.3])],
[
dnl fall back to AC_CHECK_LIB
AC_CHECK_LIB([FLAC],[FLAC__stream_decoder_init_ogg_stream],
[
FLAC_LIBS="-lFLAC"
],
[
AC_MSG_ERROR([
FLAC 1.1.3 or later is required to build this package!
Please install it or configure with --disable-flac.
])
]
)
AC_CHECK_HEADER([FLAC/stream_decoder.h],,
[
AC_MSG_ERROR([
FLAC headers are required to build this package!
Please install the development version of FLAC
or configure with --disable-flac.
])
]
)
])
CFLAGS="$FLAC_CFLAGS $CFLAGS"
LIBS="$FLAC_LIBS $LIBS"
AC_DEFINE([HAVE_LIBFLAC],[1],[FLAC])
])
dnl check for pcap
AC_CHECK_LIB([pcap], [pcap_open_live], [
AC_DEFINE([HAVE_PCAP], 1, [Define if building with libpcap support])
LIBPCAP="-lpcap"
])
AC_SUBST(LIBPCAP)
on_x86=no
case "$host_cpu" in
i[[3456]]86 | x86_64)
on_x86=yes
;;
esac
dnl check for sse
AC_ARG_ENABLE([sse],
[AS_HELP_STRING([--enable-sse],[Build binaries that require SSE])],,
[enable_sse=no])
AS_IF([test "$on_x86" = "yes" && test "$enable_sse" = "yes"],
[
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -msse"
AC_MSG_CHECKING([if ${CC} supports -msse])
AC_LINK_IFELSE([AC_LANG_SOURCE([void main(void){char foo;}])],
[ AC_MSG_RESULT([yes]) ],
[
AC_MSG_RESULT([no])
enable_sse=no
CFLAGS="$saved_CFLAGS"
])
])
dnl Enable stack-protector-all only on x86 where it's well supported.
dnl on some platforms it causes crashes. Hopefully the OS's default's
dnl include this on platforms that work but have been missed here.
AC_ARG_ENABLE([stack-protector],
[AS_HELP_STRING([--disable-stack-protector],[Disable compiler stack hardening])],,
[
AS_IF([test "$ac_cv_c_compiler_gnu" = "yes" && test "$on_x86" = "yes"],
[enable_stack_protector=yes],[enable_stack_protector=no])
])
AS_IF([test "$enable_stack_protector" = "yes"],
[
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fstack-protector-all"
AC_MSG_CHECKING([if ${CC} supports -fstack-protector-all])
AC_LINK_IFELSE([AC_LANG_SOURCE([void main(void){char foo;}])],
[ AC_MSG_RESULT([yes]) ],
[
AC_MSG_RESULT([no])
enable_stack_protector=no
CFLAGS="$saved_CFLAGS"
])
])
AC_ARG_ENABLE([pie],
[AS_HELP_STRING([--disable-pie],[Disable PIE/RELRO hardening])],,
[enable_pie=yes])
AS_IF([test "$enable_pie" = "yes"],
[
saved_CFLAGS="$CFLAGS"
saved_LDFLAGS="$LDFLAGS"
saved_LIBS="$LIBS"
CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie -Wl,-z,relro -Wl,-z,now"
LIBS="$LIBS $OPUS_LIBS"
AC_MSG_CHECKING([for PIE support])
AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <opus/opus.h>
void main () { OpusDecoder *dec = opus_decoder_create(48000, 2, 0L); }])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
enable_pie=no
CFLAGS="$saved_CFLAGS"
LDFLAGS="$saved_LDFLAGS"
])
LIBS="$saved_LIBS"
])
CFLAGS="$CFLAGS -W"
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes"
AC_MSG_CHECKING([if ${CC} supports -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CFLAGS="$saved_CFLAGS"
])
AC_FUNC_FSEEKO
dnl This is a bit of a mess. Really we should probably use AC_SEARCH_LIBS to
dnl check for these, since on Linux at least they aren't found unless libm is
dnl linked, but that may not be true everywhere. But we also don't want LIBS
dnl to contain -lm, since not everything we build actually needs that.
dnl However the only thing that uses them is opusdec, and since it also uses
dnl the speex resampler, it already needs libm for lots of other things too.
dnl So check for them with -lm in LIBS, and then clear it after we're done.
saved_LIBS="$LIBS"
LIBS="$LIBS -lm"
AC_CHECK_FUNCS([lrintf])
AC_CHECK_FUNCS([lrint])
AC_CHECK_FUNCS([fminf])
AC_CHECK_FUNCS([fmaxf])
LIBS="$saved_LIBS"
AC_CONFIG_FILES([Makefile])
AC_CONFIG_HEADERS([config.h])
AC_OUTPUT
AC_MSG_NOTICE([
------------------------------------------------------------------------
$PACKAGE_NAME $PACKAGE_VERSION: Automatic configuration OK.
Compiler support:
C99 var arrays: ................ ${has_var_arrays}
C99 lrintf: .................... ${ac_cv_func_lrintf}
Stack protector: ............... ${enable_stack_protector}
PIE: ........................... ${enable_pie}
General configuration:
Assertion checking: ............ ${enable_assertions}
FLAC input: .................... ${with_flac}
------------------------------------------------------------------------
Type "make; make install" to compile and install
])