ref: 562e4d89a11b494e74d40bc0422dddfe00b6e90d
dir: /configure.ac/
# Copyright (C) 2002-2004 Erik de Castro Lopo (erikd AT mega-nerd DOT com).
dnl Require autoconf version >= 2.54)
AC_PREREQ(2.54)
AC_INIT
AC_CONFIG_SRCDIR([src/samplerate.c])
AC_CANONICAL_TARGET([])
AM_INIT_AUTOMAKE(libsamplerate,0.1.4)
AM_CONFIG_HEADER(src/config.h)
#------------------------------------------------------------------------------------
# Rules for library version information:
#
# 1. Start with version information of `0:0:0' for each libtool library.
# 2. Update the version information only immediately before a public release of
# your software. More frequent updates are unnecessary, and only guarantee
# that the current interface number gets larger faster.
# 3. If the library source code has changed at all since the last update, then
# increment revision (`c:r:a' becomes `c:r+1:a').
# 4. If any interfaces have been added, removed, or changed since the last update,
# increment current, and set revision to 0.
# 5. If any interfaces have been added since the last public release, then increment
# age.
# 6. If any interfaces have been removed since the last public release, then set age
# to 0.
SHARED_VERSION_INFO="1:4:1"
AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PROG_LN_S
AC_PROG_LIBTOOL
AM_PROG_LIBTOOL
if test "x-$build_os-$host_os-$target_os" = x-mingw32-mingw32-mingw32 ; then
AC_CHECK_PROG(DLLTOOL, dlltool, dlltool)
AC_CHECK_PROG(DLLWRAP, dllwrap, dllwrap)
AC_CHECK_PROG(PEXPORTS, pexports, pexports)
fi
AC_HEADER_STDC
AC_CHECK_HEADERS(stdint.h sys/times.h)
#====================================================================================
# Couple of initializations here. Fill in real values later.
SHLIB_VERSION_ARG=""
#====================================================================================
# Finished checking, handle options.
AC_ARG_ENABLE(gcc-werror,
AC_HELP_STRING([--enable-gcc-werror], [enable -Werror in all Makefiles]),
ac_arg_gcc_werror=yes, ac_arg_gcc_werror=no)
AC_ARG_ENABLE(gcc-pipe,
AC_HELP_STRING([--disable-gcc-pipe], [disable gcc -pipe option ]),
ac_arg_gcc_pipe="N", ac_arg_gcc_pipe="Y")
AC_ARG_ENABLE(gcc-opt,
AC_HELP_STRING([--disable-gcc-opt], [disable gcc optimisations ]),
ac_arg_gcc_opt="N", ac_arg_gcc_opt="Y")
AC_ARG_ENABLE(fftw,
AC_HELP_STRING([--disable-fftw], [disable usage of FFTW ]),
ac_arg_fftw="N", ac_arg_fftw="Y")
AC_ARG_ENABLE(cpu-clip,
AC_HELP_STRING([--disable-cpu-clip], [disable tricky cpu specific clipper]),
ac_arg_cpu_clip="N", ac_arg_cpu_clip="Y")
#====================================================================================
# Check types and their sizes.
AC_CHECK_SIZEOF(int,0)
AC_CHECK_SIZEOF(long,0)
AC_CHECK_SIZEOF(float,4)
AC_CHECK_SIZEOF(double,8)
#====================================================================================
# Determine endian-ness of target processor.
AC_C_FIND_ENDIAN
AC_DEFINE_UNQUOTED(CPU_IS_BIG_ENDIAN, ${ac_cv_c_big_endian},
[Target processor is big endian.])
AC_DEFINE_UNQUOTED(CPU_IS_LITTLE_ENDIAN, ${ac_cv_c_little_endian},
[Target processor is little endian.])
#====================================================================================
# Check for functions.
AC_CHECK_FUNCS(malloc calloc free memcpy memmove alarm signal)
AC_CHECK_LIB([m],floor)
AC_CHECK_FUNCS(floor ceil fmod)
AC_CHECK_SIGNAL(SIGALRM)
AC_C99_FUNC_LRINT
AC_C99_FUNC_LRINTF
# AC_C99_FUNC_LLRINT Don't need this (yet?).
case "x$ac_cv_c99_lrint$ac_cv_c99_lrintf" in
xyesyes)
;;
*)
AC_MSG_WARN([[*** Missing C99 standard functions lrint() and lrintf().]])
AC_MSG_WARN([[*** This may cause benign compiler warnings on some systems (ie Solaris).]])
;;
esac
#====================================================================================
# Determine if the processor can do clipping on float to int conversions.
if test x$ac_arg_cpu_clip = "xY" ; then
AC_C_CLIP_MODE
else
echo "checking processor clipping capabilities... disabled"
ac_cv_c_clip_positive=0
ac_cv_c_clip_negative=0
fi
AC_DEFINE_UNQUOTED(CPU_CLIPS_POSITIVE, ${ac_cv_c_clip_positive},
[Target processor clips on positive float to int conversion.])
AC_DEFINE_UNQUOTED(CPU_CLIPS_NEGATIVE, ${ac_cv_c_clip_negative},
[Target processor clips on negative float to int conversion.])
#====================================================================================
# Check for libsndfile which is required for the test and example programs.
AC_ARG_ENABLE(sndfile,
AC_HELP_STRING([--disable-sndfile], [disable support for sndfile (default=autodetect)]),
[ enable_sndfile=$enableval ], [ enable_sndfile=yes ])
# Check for pkg-config outside the if statement.
PKG_PROG_PKG_CONFIG
if test "x$enable_sndfile" = "xyes"; then
PKG_CHECK_MODULES(SNDFILE, sndfile >= 1.0.6, ac_cv_sndfile=1, ac_cv_sndfile=0)
else
ac_cv_sndfile=0
fi
AC_DEFINE_UNQUOTED([HAVE_SNDFILE],$ac_cv_sndfile,[Set to 1 if you have libsndfile.])
if test x$ac_cv_sndfile = x1 ; then
ac_cv_sndfile=yes
HAVE_SNDFILE=1
else
ac_cv_sndfile=no
HAVE_SNDFILE=0
fi
#====================================================================================
# Check for libfftw3 which is required for the test and example programs.
if test $ac_arg_fftw = "Y" ; then
PKG_CHECK_MODULES(FFTW3, fftw3 >= 0.15.0, ac_cv_fftw3=1, ac_cv_fftw3=0)
AC_DEFINE_UNQUOTED([HAVE_FFTW3],$ac_cv_fftw3,[Set to 1 if you have libfftw3.])
if test x$ac_cv_fftw3 = x1 ; then
ac_cv_fftw3=yes
HAVE_FFTW3=1
fi
fi
if test x$ac_cv_fftw3 != xyes ; then
ac_cv_fftw3=no
HAVE_FFTW3=0
fi
#====================================================================================
# GCC stuff.
if test $ac_cv_c_compiler_gnu = yes ; then
CFLAGS="$CFLAGS -std=gnu99 -W -Wstrict-prototypes -Wmissing-prototypes -Wall -Waggregate-return -Wcast-align -Wcast-qual -Wnested-externs -Wshadow -Wpointer-arith"
# -Wundef -Wbad-function-cast -Wmissing-declarations -Wconversion -Winline"
if test "$ac_arg_gcc_opt" = "N" ; then
temp_CFLAGS=`echo $CFLAGS | sed "s/O2/O0/"`
CFLAGS=$temp_CFLAGS
AC_MSG_WARN([[*** Compiler optimisations switched off. ***]])
fi
# Disable -Wall for Apple Darwin/Rhapsody.
# System headers on these systems are broken.
case "$target_os" in
darwin* | rhapsody*)
temp_CFLAGS=`echo $CFLAGS | sed "s/-Wall//"`
CFLAGS=$temp_CFLAGS
;;
linux*)
SHLIB_VERSION_ARG="-Wl,--version-script=Version_script"
;;
*)
;;
esac
if test x$ac_arg_gcc_pipe != "xN" ; then
CFLAGS="$CFLAGS -pipe"
fi
if test x$ac_arg_gcc_werror = "xyes" ; then
CFLAGS="-Werror $CFLAGS"
fi
AC_DEFINE([COMPILER_IS_GCC],1, [Set to 1 if the compile is GNU GCC.])
GCC_MAJOR_VERSION=`$CC -dumpversion | sed "s/\..*//"`
AC_DEFINE_UNQUOTED([GCC_MAJOR_VERSION],${GCC_MAJOR_VERSION}, [Major version of GCC or 3 otherwise.])
fi
#====================================================================================
# Find known target OS.
OS_SPECIFIC_INCLUDES=""
os_is_win32=0
case "$target_os" in
darwin* | rhapsody*)
OS_SPECIFIC_INCLUDES="-fpascal-strings -I/Developer/Headers/FlatCarbon"
OS_SPECIFIC_LINKS="-framework CoreAudio"
;;
mingw32*)
OS_SPECIFIC_LINKS="-lwinmm"
os_is_win32=1
;;
*)
OS_SPECIFIC_INCLUDES=""
OS_SPECIFIC_LINKS=""
;;
esac
#====================================================================================
# Now use the information from the checking stage.
AC_DEFINE_UNQUOTED(OS_IS_WIN32, ${os_is_win32}, [Set to 1 if compiling for Win32])
AC_SUBST(SHLIB_VERSION_ARG)
AC_SUBST(SHARED_VERSION_INFO)
AC_SUBST(OS_SPECIFIC_INCLUDES)
AC_SUBST(OS_SPECIFIC_LINKS)
AC_SUBST(COMPILER_IS_GCC)
AC_SUBST(GCC_MAJOR_VERSION)
AC_SUBST(HAVE_FFTW3)
AC_SUBST(FFTW3_CFLAGS)
AC_SUBST(FFTW3_LIBS)
AC_SUBST(HAVE_SNDFILE)
AC_SUBST(SNDFILE_CFLAGS)
AC_SUBST(SNDFILE_LIBS)
AC_CONFIG_FILES([Makefile src/Version_script Win32/Makefile Win32/Makefile.mingw \
src/Makefile examples/Makefile tests/Makefile doc/Makefile \
libsamplerate.spec samplerate.pc])
AC_OUTPUT
#====================================================================================
AC_MSG_RESULT([
-=-=-=-=-=-=-=-=-=-= Configuration Complete =-=-=-=-=-=-=-=-=-=-=-
Configuration summary :
Version : ..................... ${VERSION}
])
if test x$ac_cv_c_compiler_gnu = xyes ; then
echo -e " Tools :\n"
echo " Compiler is GCC : ............. ${ac_cv_c_compiler_gnu}"
echo " GCC major version : ........... ${GCC_MAJOR_VERSION}"
fi
AC_MSG_RESULT([
Extra tools required for testing and examples :
Use FFTW : .................... ${ac_cv_fftw3}])
AC_MSG_RESULT([ Have libsndfile : ............. ${ac_cv_sndfile}
])
AC_MSG_RESULT([ Installation directories :
Library directory : ........... ${prefix}/lib
Program directory : ........... ${prefix}/bin
Pkgconfig directory : ......... ${prefix}/lib/pkgconfig
])
if test x$prefix != "x/usr" ; then
echo "Compiling some other packages against ${PACKAGE} may require "
echo -e "the addition of \"${prefix}/lib/pkgconfig\" to the "
echo -e "PKG_CONFIG_PATH environment variable.\n"
fi