ref: de48094873f8f4e77155d0651ed97ebbbf96f047
dir: /configure.ac/
dnl Process this file with autoconf to produce a configure script. -*-m4-*-
AC_INIT(src/opusenc.c)
AM_CONFIG_HEADER([config.h])
dnl enable silent rules on automake 1.11 and later
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
OPUSTOOLS_MAJOR_VERSION=0
OPUSTOOLS_MINOR_VERSION=1
OPUSTOOLS_MICRO_VERSION=0
OPUSTOOLS_EXTRA_VERSION=
OPUSTOOLS_VERSION="$OPUSTOOLS_MAJOR_VERSION.$OPUSTOOLS_MINOR_VERSION.$OPUSTOOLS_MICRO_VERSION$OPUSTOOLS_EXTRA_VERSION"
AC_MSG_CHECKING([git revision])
GIT_VERSION=$(git describe --tags --match 'v*' 2>/dev/null | sed 's/^v//')
if test -z "$GIT_VERSION"; then
AC_MSG_RESULT([no])
else
AC_MSG_RESULT([$GIT_VERSION])
OPUSTOOLS_VERSION="$GIT_VERSION"
fi
# For automake.
VERSION=$OPUSTOOLS_VERSION
PACKAGE=opus-tools
# For our version string
AC_SUBST(OPUSTOOLS_VERSION)
AM_INIT_AUTOMAKE($PACKAGE, $VERSION, no-define)
AM_MAINTAINER_MODE
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], [], [Use C99 variable-size arrays])
],
has_var_arrays=no
)
AC_MSG_RESULT($has_var_arrays)
AC_CHECK_FUNC(exp,[fp_libm_not_needed=yes;LIBM=],[fp_libm_not_needed=dunno])
if test x"$fp_libm_not_needed" = xdunno; then
AC_CHECK_LIB([m], [exp], [LIBS="-lm $LIBS"; LIBM="-lm"],[LIBM=])
fi
AC_SUBST([LIBM])
AC_DEFINE_UNQUOTED(OPUSTOOLS_VERSION, "${OPUSTOOLS_VERSION}", [Complete version string])
AC_DEFINE_UNQUOTED(OPUSTOOLS_MAJOR_VERSION, ${OPUSTOOLS_MAJOR_VERSION}, [Version major])
AC_DEFINE_UNQUOTED(OPUSTOOLS_MINOR_VERSION, ${OPUSTOOLS_MINOR_VERSION}, [Version minor])
AC_DEFINE_UNQUOTED(OPUSTOOLS_MICRO_VERSION, ${OPUSTOOLS_MICRO_VERSION}, [Version micro])
AC_DEFINE_UNQUOTED(OPUSTOOLS_EXTRA_VERSION, "${OPUSTOOLS_EXTRA_VERSION}", [Version extra])
ac_enable_assertions="no"
AC_ARG_ENABLE(assertions, [ --enable-assertions enable additional software error checking],
[if test "$enableval" = yes; then
ac_enable_assertions="yes"
AC_DEFINE([ENABLE_ASSERTIONS], , [Assertions])
fi])
dnl Enable stack-protector-all only on x86 where it's well supported.
dnl on some platforms it causes crashes. Hopefully the OS's default's
dnl include this on platforms that work but have been missed here.
on_x86=no
case "$host_cpu" in
i[[3456]]86 | x86_64)
on_x86=yes
;;
esac
use_stack_protector=no
if test $ac_cv_c_compiler_gnu = yes && test $on_x86 = yes; then
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fstack-protector-all"
AC_MSG_CHECKING([if ${CC} supports -fstack-protector-all])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
[ AC_MSG_RESULT([yes])
STACK_PROTECTOR="-fstack-protector-all"; use_stack_protector=yes ],
AC_MSG_RESULT([no]))
CFLAGS="$saved_CFLAGS $STACK_PROTECTOR"
fi
save_CFLAGS="$CFLAGS"
save_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS -fPIE"
LDFLAGS="$LDFLAGS -pie -Wl,-z,relro -Wl,-z,now"
AC_MSG_CHECKING([for PIE support])
AC_LINK_IFELSE([AC_LANG_SOURCE([void main () {}])],
[have_pie=yes],
[have_pie=no])
AC_MSG_RESULT([$have_pie])
if test "x$have_pie" = "xyes"; then
PIE_CFLAGS="-fPIE"
PIE_LDFLAGS="-pie -Wl,-z,relro -Wl,-z,now"
fi
CFLAGS="$save_CFLAGS $PIE_CFLAGS"
LDFLAGS="$save_LDFLAGS $PIE_LDFLAGS"
CFLAGS="$CFLAGS -W"
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes"
AC_MSG_CHECKING([if ${CC} supports -Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
[ AC_MSG_RESULT([yes])
EXTRA_WARNS="-Wall -Wextra -Wcast-align -Wnested-externs -Wshadow -Wstrict-prototypes" ],
AC_MSG_RESULT([no]))
CFLAGS="$saved_CFLAGS $EXTRA_WARNS"
AC_CHECK_FUNCS([lrintf])
AC_CHECK_FUNCS([lrint])
AC_CHECK_FUNCS([__malloc_hook])
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long)
if test x$has_char16 = "xyes" ; then
case 1 in
$ac_cv_sizeof_short) SIZE16="short";;
$ac_cv_sizeof_int) SIZE16="int";;
esac
else
case 2 in
$ac_cv_sizeof_short) SIZE16="short";;
$ac_cv_sizeof_int) SIZE16="int";;
esac
fi
if test x$has_char16 = "xyes" ; then
case 2 in
$ac_cv_sizeof_int) SIZE32="int";;
$ac_cv_sizeof_long) SIZE32="long";;
$ac_cv_sizeof_short) SIZE32="short";;
esac
else
case 4 in
$ac_cv_sizeof_int) SIZE32="int";;
$ac_cv_sizeof_long) SIZE32="long";;
$ac_cv_sizeof_short) SIZE32="short";;
esac
fi
AC_SUBST(SIZE16)
AC_SUBST(SIZE32)
dnl check for Ogg
HAVE_OGG=no
dnl first check through pkg-config since it's more flexible
dnl check for pkg-config itself so we don't try the m4 macro without pkg-config
AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
if test "x$HAVE_PKG_CONFIG" = "xyes"
then
PKG_CHECK_MODULES(OGG, ogg >= 1.3, HAVE_OGG=yes, HAVE_OGG=no)
fi
if test "x$HAVE_OGG" = "xno"
then
dnl fall back to the old school test
XIPH_PATH_OGG(, AC_MSG_ERROR([
libogg is required to build this package!
please see http://www.xiph.org/ for how to
obtain a copy.
]))
cflags_save=$CFLAGS
libs_save=$LIBS
CFLAGS="$CFLAGS $OGG_CFLAGS"
LIBS="$LIBS $OGG_LIBS"
AC_CHECK_FUNC(ogg_stream_flush_fill, , [
AC_MSG_ERROR([newer libogg version (1.3 or later) required])
])
CFLAGS=$cflags_save
LIBS=$libs_save
fi
dnl check for Opus
HAVE_OPUS=no
dnl first check through pkg-config since it's more flexible
dnl check for pkg-config itself so we don't try the m4 macro without pkg-config
AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
if test "x$HAVE_PKG_CONFIG" = "xyes"
then
PKG_CHECK_MODULES(Opus, opus >= 0.9.10, HAVE_OPUS=yes, HAVE_OPUS=no)
fi
if test "x$HAVE_OPUS" = "xno"
then
AC_MSG_ERROR([
Opus is required to build this package!
please see http://opus-codec.org/ for how to
obtain a copy.])
fi
dnl check for OSS
HAVE_OSS=no
AC_CHECK_HEADERS([sys/soundcard.h soundcard.h machine/soundcard.h],[
HAVE_OSS=yes
break
])
if test x$HAVE_OSS != xyes; then
AC_MSG_WARN([OSS audio support not found -- no direct audio output in opusdec])
fi
dnl OpenBSD needs -lossaudio to use the oss interface
OSS_LIBS=
case "$host_os" in
openbsd*)
OSS_LIBS='-lossaudio'
;;
esac
AC_SUBST(OSS_LIBS)
AC_OUTPUT([Makefile])
AC_MSG_RESULT([
------------------------------------------------------------------------
$PACKAGE $VERSION: Automatic configuration OK.
Compiler support:
C99 var arrays: ................ ${has_var_arrays}
C99 lrintf: .................... ${ac_cv_func_lrintf}
Stack protector: ............... ${use_stack_protector}
PIE: ........................... ${have_pie}
General configuration:
Assertion checking: ............ ${ac_enable_assertions}
------------------------------------------------------------------------
])
echo "Type \"make; make install\" to compile and install";
echo "Type \"make check\" to run the test suite";