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],[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=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($has_var_arrays) AC_CHECK_HEADERS([alloca.h getopt.h]) AC_MSG_CHECKING(for alloca) AC_TRY_COMPILE( [#include ], [ int foo=10; int *array = alloca(foo); ], [ has_alloca=yes; if test x$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 ])