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],[CURRENT_VERSION],[opus@xiph.org])
AC_CONFIG_SRCDIR(src/opus_encoder.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])])
# For libtool.
dnl Please update these for releases.
OPUS_LT_CURRENT=5
OPUS_LT_REVISION=0
OPUS_LT_AGE=5
AC_SUBST(OPUS_LT_CURRENT)
AC_SUBST(OPUS_LT_REVISION)
AC_SUBST(OPUS_LT_AGE)
AM_INIT_AUTOMAKE([no-define])
AM_MAINTAINER_MODE([enable])
AC_CANONICAL_HOST
AC_MINGW32
AM_PROG_LIBTOOL
AM_PROG_CC_C_O
AC_PROG_CC_C99
AC_C_CONST
AC_C_INLINE
AM_PROG_AS
AC_DEFINE([OPUS_BUILD], [], [This is a build of OPUS])
#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
use_alloca="no (using var arrays)"
AC_DEFINE([VAR_ARRAYS], [1], [Use C99 variable-size arrays])
],[
has_var_arrays=no
])
AC_MSG_RESULT([$has_var_arrays])
AS_IF([test "$has_var_arrays" = "no"],
[
AC_CHECK_HEADERS([alloca.h])
AC_MSG_CHECKING(for alloca)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alloca.h>]],
[[int foo=10; int *array = alloca(foo);]])],
[ use_alloca=yes;
AC_DEFINE([USE_ALLOCA], [], [Make use of alloca])
],[
use_alloca=no
])
AC_MSG_RESULT([$use_alloca])
])
LT_LIB_M
AC_ARG_ENABLE([fixed-point],
[AS_HELP_STRING([--enable-fixed-point],
[compile without floating point (for machines without a fast enough FPU)])],,
[enable_fixed_point=no])
AS_IF([test "$enable_fixed_point" = "yes"],[
enable_float="no"
AC_DEFINE([FIXED_POINT], [1], [Compile as fixed-point (for machines without a fast enough FPU)])
PC_BUILD="fixed-point"
],[
enable_float="yes";
PC_BUILD="floating-point"
])
AM_CONDITIONAL([FIXED_POINT], [test "$enable_fixed_point" = "yes"])
AC_ARG_ENABLE([fixed-point-debug],
[AS_HELP_STRING([--enable-fixed-point-debug], [debug fixed-point implementation])],,
[enable_fixed_point_debug=no])
AS_IF([test "$enable_fixed_point_debug" = "yes"],[
AC_DEFINE([FIXED_DEBUG], [1], [Debug fixed-point implementation])
])
AC_ARG_ENABLE([float_api],
[AS_HELP_STRING([--disable-float-api],
[compile without the floating point API (for machines with no float library)])],,
[enable_float_api=yes])
AM_CONDITIONAL([DISABLE_FLOAT_API], [test "$enable_float_api" = "no"])
AS_IF([test "$enable_float_api" = "no"],[
AC_DEFINE([DISABLE_FLOAT_API], [1], [Do not build the float API])
])
AC_ARG_ENABLE([custom-modes],
[AS_HELP_STRING([--enable-custom-modes], [enable non-Opus modes, e.g. 44.1 kHz & 2^n frames])],,
[enable_custom_modes=no])
AS_IF([test "$enable_custom_modes" = "yes"],[
AC_DEFINE([CUSTOM_MODES], [1], [Custom modes])
PC_BUILD="$PC_BUILD, custom modes"
])
AM_CONDITIONAL([CUSTOM_MODES], [test "$enable_custom_modes" = "yes"])
has_float_approx=no
#case "$host_cpu" in
#i[[3456]]86 | x86_64 | powerpc64 | powerpc32 | ia64)
# has_float_approx=yes
# ;;
#esac
AC_ARG_ENABLE([float-approx],
[AS_HELP_STRING([--enable-float-approx], [enable fast approximations for floating point])],
[if test "$enable_float_approx" = "yes"; then
AC_WARN([Floating point approximations are not supported on all platforms.])
fi
],
[enable_float_approx=$has_float_approx])
AS_IF([test "$enable_float_approx" = "yes"],[
AC_DEFINE([FLOAT_APPROX], [1], [Float approximations])
])
AC_ARG_ENABLE([asm],
[AS_HELP_STRING([--disable-asm], [Disable assembly optimizations])],,
[enable_asm=yes])
AC_ARG_ENABLE([rtcd],
[AS_HELP_STRING([--disable-rtcd], [Disable run-time CPU capabilities detection])],,
[enable_rtcd=yes])
rtcd_support=no
cpu_arm=no
AS_IF([test x"${enable_asm}" = x"yes"],[
inline_optimization="No ASM for your platform, please send patches"
case $host_cpu in
arm*)
dnl Currently we only have asm for fixed-point
AS_IF([test "$enable_float" != "yes"],[
cpu_arm=yes
AC_DEFINE([OPUS_ARM_ASM], [], [Make use of ARM asm optimization])
AS_GCC_INLINE_ASSEMBLY(
[inline_optimization="ARM"],
[inline_optimization="disabled"]
)
AS_ASM_ARM_EDSP([OPUS_ARM_INLINE_EDSP=1],[OPUS_ARM_INLINE_EDSP=0])
AS_ASM_ARM_MEDIA([OPUS_ARM_INLINE_MEDIA=1],
[OPUS_ARM_INLINE_MEDIA=0])
AS_ASM_ARM_NEON([OPUS_ARM_INLINE_NEON=1],[OPUS_ARM_INLINE_NEON=0])
AS_IF([test x"$inline_optimization" = x"ARM"],[
AM_CONDITIONAL([OPUS_ARM_INLINE_ASM],[true])
AC_DEFINE([OPUS_ARM_INLINE_ASM], 1,
[Use generic ARMv4 inline asm optimizations])
AS_IF([test x"$OPUS_ARM_INLINE_EDSP" = x"1"],[
AC_DEFINE([OPUS_ARM_INLINE_EDSP], [1],
[Use ARMv5E inline asm optimizations])
inline_optimization="$inline_optimization (EDSP)"
])
AS_IF([test x"$OPUS_ARM_INLINE_MEDIA" = x"1"],[
AC_DEFINE([OPUS_ARM_INLINE_MEDIA], [1],
[Use ARMv6 inline asm optimizations])
inline_optimization="$inline_optimization (Media)"
])
AS_IF([test x"$OPUS_ARM_INLINE_NEON" = x"1"],[
AC_DEFINE([OPUS_ARM_INLINE_NEON], 1,
[Use ARM NEON inline asm optimizations])
inline_optimization="$inline_optimization (NEON)"
])
])
dnl We need Perl to translate RVCT-syntax asm to gas syntax.
AC_CHECK_PROG([HAVE_PERL], perl, yes, no)
AS_IF([test x"$HAVE_PERL" = x"yes"],[
AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM],[true])
asm_optimization="ARM"
AS_IF([test x"$OPUS_ARM_INLINE_EDSP" = x"1"], [
OPUS_ARM_PRESUME_EDSP=1
OPUS_ARM_MAY_HAVE_EDSP=1
],
[
OPUS_ARM_PRESUME_EDSP=0
OPUS_ARM_MAY_HAVE_EDSP=0
])
AS_IF([test x"$OPUS_ARM_INLINE_MEDIA" = x"1"], [
OPUS_ARM_PRESUME_MEDIA=1
OPUS_ARM_MAY_HAVE_MEDIA=1
],
[
OPUS_ARM_PRESUME_MEDIA=0
OPUS_ARM_MAY_HAVE_MEDIA=0
])
AS_IF([test x"$OPUS_ARM_INLINE_NEON" = x"1"], [
OPUS_ARM_PRESUME_NEON=1
OPUS_ARM_MAY_HAVE_NEON=1
],
[
OPUS_ARM_PRESUME_NEON=0
OPUS_ARM_MAY_HAVE_NEON=0
])
AS_IF([test x"$enable_rtcd" = x"yes"],[
AS_IF([test x"$OPUS_ARM_MAY_HAVE_EDSP" != x"1"],[
AC_MSG_NOTICE(
[Trying to force-enable armv5e EDSP instructions...])
AS_ASM_ARM_EDSP_FORCE([OPUS_ARM_MAY_HAVE_EDSP=1])
])
AS_IF([test x"$OPUS_ARM_MAY_HAVE_MEDIA" != x"1"],[
AC_MSG_NOTICE(
[Trying to force-enable ARMv6 media instructions...])
AS_ASM_ARM_MEDIA_FORCE([OPUS_ARM_MAY_HAVE_MEDIA=1])
])
AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON" != x"1"],[
AC_MSG_NOTICE(
[Trying to force-enable NEON instructions...])
AS_ASM_ARM_NEON_FORCE([OPUS_ARM_MAY_HAVE_NEON=1])
])
])
rtcd_support=
AS_IF([test x"$OPUS_ARM_MAY_HAVE_EDSP" = x"1"],[
AC_DEFINE(OPUS_ARM_MAY_HAVE_EDSP, 1,
[Define if assembler supports EDSP instructions])
AS_IF([test x"$OPUS_ARM_PRESUME_EDSP" = x"1"],[
AC_DEFINE(OPUS_ARM_PRESUME_EDSP, 1,
[Define if binary requires EDSP instruction support])
asm_optimization="$asm_optimization (EDSP)"
],
[rtcd_support="$rtcd_support (EDSP)"]
)
])
AC_SUBST(OPUS_ARM_MAY_HAVE_EDSP)
AS_IF([test x"$OPUS_ARM_MAY_HAVE_MEDIA" = x"1"],[
AC_DEFINE(OPUS_ARM_MAY_HAVE_MEDIA, 1,
[Define if assembler supports ARMv6 media instructions])
AS_IF([test x"$OPUS_ARM_PRESUME_MEDIA" = x"1"],[
AC_DEFINE(OPUS_ARM_PRESUME_MEDIA, 1,
[Define if binary requires ARMv6 media instruction support])
asm_optimization="$asm_optimization (Media)"
],
[rtcd_support="$rtcd_support (Media)"]
)
])
AC_SUBST(OPUS_ARM_MAY_HAVE_MEDIA)
AS_IF([test x"$OPUS_ARM_MAY_HAVE_NEON" = x"1"],[
AC_DEFINE(OPUS_ARM_MAY_HAVE_NEON, 1,
[Define if compiler supports NEON instructions])
AS_IF([test x"$OPUS_ARM_PRESUME_NEON" = x"1"], [
AC_DEFINE(OPUS_ARM_PRESUME_NEON, 1,
[Define if binary requires NEON instruction support])
asm_optimization="$asm_optimization (NEON)"
],
[rtcd_support="$rtcd_support (NEON)"]
)
])
AC_SUBST(OPUS_ARM_MAY_HAVE_NEON)
dnl Make sure turning on RTCD gets us at least one
dnl instruction set.
AS_IF([test x"$rtcd_support" != x""],
[rtcd_support=ARM"$rtcd_support"],
[rtcd_support="no"]
)
],
[
AC_MSG_WARN(
[*** ARM assembly requires perl -- disabling optimizations])
asm_optimization="(missing perl dependency for ARM)"
])
])
;;
esac
],[
inline_optimization="disabled"
asm_optimization="disabled"
])
AM_CONDITIONAL([CPU_ARM], [test "$cpu_arm" = "yes"])
AM_CONDITIONAL([OPUS_ARM_INLINE_ASM],
[test x"${inline_optimization:0:3}" = x"ARM"])
AM_CONDITIONAL([OPUS_ARM_EXTERNAL_ASM],
[test x"${asm_optimization:0:3}" = x"ARM"])
AS_IF([test x"$enable_rtcd" = x"yes"],[
AS_IF([test x"$rtcd_support" != x"no"],[
AC_DEFINE([OPUS_HAVE_RTCD], [1],
[Use run-time CPU capabilities detection])
OPUS_HAVE_RTCD=1
AC_SUBST(OPUS_HAVE_RTCD)
])
],[
rtcd_support="disabled"
])
AC_ARG_ENABLE([assertions],
[AS_HELP_STRING([--enable-assertions],[enable additional software error checking])],,
[enable_assertions=no])
AS_IF([test "$enable_assertions" = "yes"], [
AC_DEFINE([ENABLE_ASSERTIONS], [1], [Assertions])
])
AC_ARG_ENABLE([fuzzing],
[AS_HELP_STRING([--enable-fuzzing],[causes the encoder to make random decisions])],,
[enable_fuzzing=no])
AS_IF([test "$enable_fuzzing" = "yes"], [
AC_DEFINE([FUZZING], [1], [Fuzzing])
])
AC_ARG_ENABLE([doc],
[AS_HELP_STRING([--disable-doc], [Do not build API documentation])],,
[enable_doc=yes])
AS_IF([test "$enable_doc" = "yes"], [
AC_CHECK_PROG(HAVE_DOXYGEN, [doxygen], [yes], [no])
],[
HAVE_DOXYGEN=no
])
AM_CONDITIONAL([HAVE_DOXYGEN], [test "$HAVE_DOXYGEN" = "yes"])
AC_ARG_ENABLE([extra-programs],
[AS_HELP_STRING([--disable-extra-programs], [Do not build extra programs (demo and tests)])],,
[enable_extra_programs=yes])
AM_CONDITIONAL([EXTRA_PROGRAMS], [test "$enable_extra_programs" = "yes"])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CFLAGS="$saved_CFLAGS"
])
CFLAGS="$CFLAGS -W"
warn_CFLAGS="-Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes"
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $warn_CFLAGS"
AC_MSG_CHECKING([if ${CC} supports ${warn_CFLAGS}])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[char foo;]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CFLAGS="$saved_CFLAGS"
])
saved_LIBS="$LIBS"
LIBS="$LIBS $LIBM"
AC_CHECK_FUNCS([lrintf])
AC_CHECK_FUNCS([lrint])
LIBS="$saved_LIBS"
AC_CHECK_FUNCS([__malloc_hook])
AC_SUBST([PC_BUILD])
AC_CONFIG_FILES([
Makefile
opus.pc
opus-uninstalled.pc
celt/arm/armopts.s
doc/Makefile
doc/Doxyfile
])
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}
Use alloca: .................... ${use_alloca}
General configuration:
Floating point support: ........ ${enable_float}
Fast float approximations: ..... ${enable_float_approx}
Fixed point debugging: ......... ${enable_fixed_point_debug}
Inline Assembly Optimizations: . ${inline_optimization}
External Assembly Optimizations: ${asm_optimization}
Run-time CPU detection: ........ ${rtcd_support}
Custom modes: .................. ${enable_custom_modes}
Assertion checking: ............ ${enable_assertions}
Fuzzing: ....................... ${enable_fuzzing}
API documentation: ............. ${enable_doc}
Extra programs: ................ ${enable_extra_programs}
------------------------------------------------------------------------
Type "make; make install" to compile and install
Type "make check" to run the test suite
])