ref: 4a7bb1fe9bd09bb67c536ecafdbcdbfecef7cc07
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],[CURRENT_VERSION],[[email protected]])
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=4
OPUS_LT_REVISION=0
OPUS_LT_AGE=4
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
#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_DEFINE([OPUS_BUILD], [], [This is a build of OPUS])
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], [], [Use C99 variable-size arrays])
],
has_var_arrays=no
)
AC_MSG_RESULT($has_var_arrays)
AC_CHECK_HEADERS([alloca.h getopt.h])
AC_MSG_CHECKING(for alloca)
AC_TRY_COMPILE( [#include <alloca.h>], [
int foo=10;
int *array = alloca(foo);
],
[
has_alloca=yes;
if test x$has_var_arrays = "xno" ; then
AC_DEFINE([USE_ALLOCA], [], [Make use of alloca])
fi
],
has_alloca=no
)
AC_MSG_RESULT($has_alloca)
AC_CHECK_FUNC(exp,[fp_libm_not_needed=yes;LIBM=],[fp_libm_not_needed=dunno])
if test x"$fp_libm_not_needed" = xdunno; then
AC_CHECK_LIB([m], [exp], [LIBS="-lm $LIBS"; LIBM="-lm"],[LIBM=])
fi
AC_SUBST([LIBM])
has_float_approx=no
#case "$host_cpu" in
#i[[3456]]86 | x86_64 | powerpc64 | powerpc32 | ia64)
# has_float_approx=yes
# ;;
#esac
ac_enable_fixed="no";
ac_enable_float="yes";
AC_ARG_ENABLE(fixed-point, [ --enable-fixed-point compile without floating point (for machines without a fast enough FPU)],
[if test "$enableval" = yes; then
ac_enable_fixed="yes";
ac_enable_float="no";
AC_DEFINE([FIXED_POINT], [1], [Compile as fixed-point (for machines without a fast enough FPU)])
fi])
ac_enable_fixed_debug="no"
AC_ARG_ENABLE(fixed-point-debug, [ --enable-fixed-point-debug debug fixed-point implementation],
[if test "$enableval" = yes; then
ac_enable_fixed_debug="yes"
AC_DEFINE([FIXED_DEBUG], , [Debug fixed-point implementation])
fi])
ac_enable_custom_modes="no"
AC_ARG_ENABLE(custom-modes, [ --enable-custom-modes enable non-Opus modes, e.g. 44.1 kHz & 2^n frames],
[if test "$enableval" = yes; then
ac_enable_custom_modes="yes"
AC_DEFINE([CUSTOM_MODES], , [Custom modes])
fi])
float_approx=$has_float_approx
AC_ARG_ENABLE(float-approx, [ --enable-float-approx enable fast approximations for floating point],
[ if test "$enableval" = yes; then
AC_WARN([Floating point approximations are not supported on all platforms.])
float_approx=yes
else
float_approx=no
fi], [ float_approx=$has_float_approx ])
if test "x${float_approx}" = "xyes"; then
AC_DEFINE([FLOAT_APPROX], , [Float approximations])
fi
rtcd_support=no
cpu_arm=no
AC_ARG_ENABLE(asm,
AS_HELP_STRING([--disable-asm], [Disable assembly optimizations]),
[ ac_enable_asm=$enableval ], [ ac_enable_asm=yes] )
if test "x${ac_enable_asm}" = xyes ; then
asm_optimization="no asm for your platform, please send patches"
case $host_cpu in
arm*)
cpu_arm=yes
AS_GCC_INLINE_ASSEMBLY([asm_optimization="ARM"],
[asm_optimization="disabled"])
if test "x${asm_optimization}" = "xARM" ; then
rtcd_support=yes
AC_DEFINE([ARMv4_ASM], 1, [Use generic ARMv4 asm optimizations])
AS_ASM_ARM_EDSP([ARMv5E_ASM=1],[ARMv5E_ASM=0])
if test "x${ARMv5E_ASM}" = "x1" ; then
AC_DEFINE(ARMv5E_ASM, 1, [Use ARMv5E asm optimizations])
asm_optimization="${asm_optimization} (EDSP)"
fi
AS_ASM_ARM_MEDIA([ARMv6_ASM=1],[ARMv6_ASM=0])
if test "x${ARMv6_ASM}" = "x1" ; then
AC_DEFINE(ARMv6_ASM, 1, [Use ARMv6 asm optimizations])
asm_optimization="${asm_optimization} (Media)"
fi
AS_ASM_ARM_NEON([ARM_HAVE_NEON=1],[ARM_HAVE_NEON=0])
if test "x${ARM_HAVE_NEON}" = "x1" ; then
AC_DEFINE([ARM_HAVE_NEON], 1, [Use ARM NEON optimizations])
asm_optimization="${asm_optimization} (NEON)"
fi
fi
;;
esac
else
asm_optimization="disabled"
fi
AC_ARG_ENABLE(rtcd,
AS_HELP_STRING([--disable-rtcd], [Disable run-time CPU capabilities detection]),
[ ac_enable_rtcd=$enableval ], [ ac_enable_rtcd=yes] )
if test "x${ac_enable_rtcd}" = xyes -a "x${rtcd_support}" = xyes ; then
AC_DEFINE([OPUS_HAVE_RTCD], 1, [Use run-time CPU capabilities detection])
elif test "x${rtcd_support}" = xno ; then
rtcd_support="no rtcd for your platform, please send patches"
else
rtcd_support="no"
fi
ac_enable_assertions="no"
AC_ARG_ENABLE(assertions, [ --enable-assertions enable additional software error checking],
[if test "$enableval" = yes; then
ac_enable_assertions="yes"
AC_DEFINE([ENABLE_ASSERTIONS], , [Assertions])
fi])
ac_enable_fuzzing="no"
AC_ARG_ENABLE(fuzzing, [ --enable-fuzzing causes the encoder to make random decisions],
[if test "$enableval" = yes; then
ac_enable_fuzzing="yes"
AC_DEFINE([FUZZING], , [Fuzzing])
fi])
ac_enable_doc="yes"
AC_ARG_ENABLE([doc],
AS_HELP_STRING([--disable-doc], [Do not build API documentation]),
[ac_enable_doc=$enableval])
AC_CHECK_PROG(HAVE_DOXYGEN, [doxygen], [yes], [no])
if test "$HAVE_DOXYGEN" != "yes" -o "$ac_enable_doc" != "yes"; then
HAVE_DOXYGEN="false"
ac_enable_doc="no"
fi
AM_CONDITIONAL(HAVE_DOXYGEN, [test $HAVE_DOXYGEN = yes])
ac_enable_extra_programs="yes"
AC_ARG_ENABLE([extra-programs],
AS_HELP_STRING([--disable-extra-programs], [Do not build extra programs (demo and tests)]),
[ac_enable_extra_programs=$enableval])
if test "$ac_enable_extra_programs" != "yes"; then
ac_enable_extra_progs="no"
fi
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
[ AC_MSG_RESULT([yes])
SYMBOL_VISIBILITY="-fvisibility=hidden" ],
AC_MSG_RESULT([no]))
CFLAGS="$saved_CFLAGS $SYMBOL_VISIBILITY"
AC_SUBST(SYMBOL_VISIBILITY)
CFLAGS="$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 ${warn_CFLAGS}])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
[ AC_MSG_RESULT([yes])
EXTRA_WARNS=$warn_CFLAGS ],
AC_MSG_RESULT([no]))
CFLAGS="$saved_CFLAGS $EXTRA_WARNS"
AC_CHECK_FUNCS([lrintf])
AC_CHECK_FUNCS([lrint])
AC_CHECK_FUNCS([__malloc_hook])
AM_CONDITIONAL([FIXED_POINT], [test x$ac_enable_fixed = xyes])
AM_CONDITIONAL([CUSTOM_MODES], [test x$ac_enable_custom_modes = xyes])
AM_CONDITIONAL([EXTRA_PROGRAMS], [test x$ac_enable_extra_programs = xyes])
AM_CONDITIONAL([CPU_ARM], [test x$cpu_arm = xyes])
dnl subsitutions for the pkg-config files
if test x$ac_enable_float = xyes; then
PC_BUILD="floating-point"
PC_LIBM=$LIBM
else
PC_BUILD="fixed-point"
PC_LIBM=
fi
dnl opus_custom requires libm as well
if test x$ac_enable_custom_modes = xyes; then
PC_BUILD="${PC_BUILD}, custom modes"
PC_LIBM=$LIBM
fi
AC_SUBST([PC_BUILD])
AC_SUBST([PC_LIBM])
AC_CONFIG_FILES([Makefile opus.pc opus-uninstalled.pc
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}
Alloca: ........................ ${has_alloca}
General configuration:
Floating point support: ........ ${ac_enable_float}
Fast float approximations: ..... ${float_approx}
Fixed point debugging: ......... ${ac_enable_fixed_debug}
Assembly optimization: ......... ${asm_optimization}
Run-time CPU detection: ........ ${rtcd_support}
Custom modes: .................. ${ac_enable_custom_modes}
Assertion checking: ............ ${ac_enable_assertions}
Fuzzing: ....................... ${ac_enable_fuzzing}
API documentation: ............. ${ac_enable_doc}
Extra programs: ................ ${ac_enable_extra_programs}
------------------------------------------------------------------------
Type "make; make install" to compile and install
Type "make check" to run the test suite
])