ref: 444d54efffd39b22563229cbefef93ca5d4794a5
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([ ./update_version 2>/dev/null || true
if test -e package_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_CHECK_HEADERS([inttypes.h])
AC_C_BIGENDIAN
AC_C_CONST
AC_C_INLINE
LT_INIT
#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)
#Note: Both this and the test for variable-size arrays below are also
# done by AC_PROG_CC_C99, but not thoroughly enough apparently.
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_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[[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([$has_var_arrays])
AC_ARG_ENABLE([assertions],
[AS_HELP_STRING([--enable-assertions],[enable additional software error checking])],,
[enable_assertions=no])
AS_IF([test "$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
LT_LIB_M
AC_CHECK_LIB([winmm], [main])
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 "$HAVE_PKG_CONFIG" = "yes"],
dnl first try via pkg-config
[PKG_CHECK_MODULES([OGG],[ogg >= 1.3])],
[
dnl fall back to the old school test
XIPH_PATH_OGG(, AC_MSG_ERROR([
libogg is required to build this package!
Please see https://www.xiph.org/ for how to obtain a copy.
]))
saved_CFLAGS="$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 >= 1.1])],
[
dnl fall back to the old school test
XIPH_PATH_OPUS(, AC_MSG_ERROR([
Opus is required to build this package!
Please see https://opus-codec.org/ for how to obtain a copy.
]))
])
dnl check for opusfile (specifically, we need libopusurl)
AS_IF([test "$HAVE_PKG_CONFIG" = "yes"],
[
dnl checking for opusfile first will offer a more helpful message if it is
dnl not installed, since the package that is needed is likely opusfile
PKG_CHECK_MODULES([OPUSFILE],[opusfile >= 0.5])
PKG_CHECK_MODULES([OPUSURL],[opusurl >= 0.5])
],
[
dnl fall back to the old school test
XIPH_PATH_OPUSFILE(, AC_MSG_ERROR([
libopusfile is required to build this package!
Please see https://opus-codec.org/ for how to obtain a copy.
]))
OPUSURL_CFLAGS="$OPUSFILE_CFLAGS"
OPUSURL_LIBS="$OPUSFILE_LIBS -lopusurl"
])
dnl check for libopusenc
AS_IF([test "$HAVE_PKG_CONFIG" = "yes"],
[PKG_CHECK_MODULES([LIBOPUSENC],[libopusenc >= 0.1.1])],
[
dnl fall back to the old school test
XIPH_PATH_LIBOPUSENC(, AC_MSG_ERROR([
libopusenc is required to build this package!
Please see https://opus-codec.org/ for how to obtain a copy.
]))
])
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.
])
]
)
])
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
on_windows=no
case $host in
*cygwin*|*mingw*)
on_windows=yes
;;
esac
dnl check for sse
AC_ARG_ENABLE([sse],
[AS_HELP_STRING([--enable-sse],[Build binaries that require SSE])],,
[enable_sse=no])
AS_IF([test "$on_x86" = "yes" && test "$enable_sse" = "yes"],
[
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -msse"
AC_MSG_CHECKING([if ${CC} supports -msse])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[[char foo;]])],
[ AC_MSG_RESULT([yes]) ],
[
AC_MSG_RESULT([no])
enable_sse=no
CFLAGS="$saved_CFLAGS"
])
])
dnl Enable stack-protector-strong only on x86 where it's well supported,
dnl but not on Windows because it creates a dependency on libssp.dll.
dnl On some platforms it causes crashes. Hopefully the OS defaults to
dnl enabling 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" && test "$on_windows" = "no"],
[enable_stack_protector=yes],[enable_stack_protector=no])
])
AS_IF([test "$enable_stack_protector" = "yes"],
[
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fstack-protector-strong"
AC_MSG_CHECKING([if ${CC} supports -fstack-protector-strong])
AC_LINK_IFELSE([AC_LANG_PROGRAM([],[[char foo;]])],
[ AC_MSG_RESULT([yes]) ],
[
AC_MSG_RESULT([no])
enable_stack_protector=no
CFLAGS="$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 $OPUS_CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie -Wl,-z,relro -Wl,-z,now"
LIBS="$LIBS $OPUS_LIBS"
AC_MSG_CHECKING([for PIE support])
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <opus.h>]],
[[OpusDecoder *dec = opus_decoder_create(48000, 2, 0L)]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
enable_pie=no
CFLAGS="$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 -Wno-sign-compare"
AC_MSG_CHECKING([if ${CC} supports -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes -Wno-sign-compare])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CFLAGS="$saved_CFLAGS"
])
AC_FUNC_FSEEKO
saved_LIBS="$LIBS"
LIBS="$LIBS $LIBM"
AC_CHECK_FUNCS([lrintf])
AC_CHECK_FUNCS([fminf])
AC_CHECK_FUNCS([fmaxf])
LIBS="$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
])