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configure.ac
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# Process this file with autoconf to produce a configure script.
#
# Make sure we use autoconf 2.60 to generate the "configure" script,
# in case we want to commit it. Other than that, version 2.59 is
# perfectly fine for our purposes, so people who want to modify
# this file just have to remember to set the AC_PREREQ argument
# to something that suits their needs.
AC_PREREQ(2.60)
AC_INIT([asterisk], [trunk], [https://issues.asterisk.org])
# cross-compile macros
AC_CANONICAL_BUILD
AC_CANONICAL_HOST
# check existence of the package
AC_CONFIG_SRCDIR([main/asterisk.c])
AC_CONFIG_AUX_DIR(`pwd`)
AC_COPYRIGHT("Asterisk")
AC_REVISION($Revision$)
# preserve any CFLAGS or LDFLAGS that may be set
# NOTE: This must be done before calling any macros that end up
# calling AC_PROG_CC or the like, since they will set a default
# set of CFLAGS ("-g -O2") if the user did not supply any, and
# we don't want those default flags to be carried over into the
# rest of the build system since we have other means of controlling
# debugging symbol generation and optimization.
CONFIG_CFLAGS="${CFLAGS}"
CONFIG_LDFLAGS="${LDFLAGS}"
AC_SUBST(CONFIG_CFLAGS)
AC_SUBST(CONFIG_LDFLAGS)
# specify output header file
AC_CONFIG_HEADER(include/asterisk/autoconfig.h)
# Note: AC_PROG_CC *must* be specified before AC_USE_SYSTEM_EXTENSIONS or any
# other macro that uses the C compiler, or the default order will be used.
AC_PROG_CC([gcc cc])
AC_USE_SYSTEM_EXTENSIONS dnl note- does not work on FreeBSD
# System default paths
AC_SUBST([astsbindir], ['${sbindir}'])dnl
AC_SUBST([astetcdir], ['${sysconfdir}/asterisk'])dnl
AC_SUBST([astheaderdir], ['${includedir}/asterisk'])dnl
AC_SUBST([astlibdir], ['${libdir}'])dnl
AC_SUBST([astmoddir], ['${libdir}/asterisk/modules'])dnl
AC_SUBST([astmandir], ['${mandir}'])dnl
AC_SUBST([astvarlibdir], ['${localstatedir}/lib/asterisk'])dnl
AC_SUBST([astdatadir], ['${astvarlibdir}'])dnl
AC_SUBST([astdbdir], ['${astvarlibdir}'])dnl
AC_SUBST([astkeydir], ['${astvarlibdir}'])dnl
AC_SUBST([astspooldir], ['${localstatedir}/spool/asterisk'])dnl
AC_SUBST([astlogdir], ['${localstatedir}/log/asterisk'])dnl
AC_SUBST([astvarrundir], ['${localstatedir}/run/asterisk'])dnl
case "${host_os}" in
*bsd*)
if test ${prefix} = 'NONE'; then
astvarlibdir='${prefix}/share/asterisk'
astdbdir='${localstatedir}/db/asterisk'
fi
;;
darwin*)
if test ${prefix} = 'NONE'; then
astvarrundir='/Library/Application Support/Asterisk/Run'
fi
;;
esac
case "${host_os}" in
freebsd*)
ac_default_prefix=/usr/local
CPPFLAGS=-I/usr/local/include
LDFLAGS=-L/usr/local/lib
;;
openbsd*)
ac_default_prefix=/usr/local
if test ${prefix} = '/usr/local' || test ${prefix} = 'NONE'; then
if test ${sysconfdir} = '${prefix}/etc'; then
astetcdir=/etc/asterisk
fi
if test ${mandir} = '${prefix}/man'; then
astmandir=/usr/share/man
fi
fi
CPPFLAGS=-I/usr/local/include
LDFLAGS=-L/usr/local/lib
;;
darwin*)
ac_default_prefix=/usr/local
if test ${prefix} = 'NONE'; then
astmoddir='/Library/Application Support/Asterisk/Modules'
astvarlibdir='/Library/Application Support/Asterisk'
astlogdir=/Library/Logs/Asterisk
astvarrundir='/Library/Application Support/Asterisk/Run'
fi
AC_DEFINE([AST_POLL_COMPAT], 1, [Define to 1 if internal poll should be used.])
AC_DEFINE([_DARWIN_UNLIMITED_SELECT], 1, [Define to 1 if running on Darwin.])
;;
solaris*)
if test ${prefix} = 'NONE'; then
astetcdir=/var/etc/asterisk
astsbindir=/opt/asterisk/sbin
astlibdir=/opt/asterisk/lib
astmoddir=/opt/asterisk/lib/modules
astheaderdir=/opt/asterisk/include
astmandir=/opt/asterisk/man
astvarlibdir=/var/opt/asterisk
astspooldir=/var/spool/asterisk
astlogdir=/var/log/asterisk
astvarrundir=/var/run/asterisk
fi
;;
*)
ac_default_prefix=/usr
if test ${prefix} = '/usr' || test ${prefix} = 'NONE'; then
if test ${sysconfdir} = '${prefix}/etc'; then
sysconfdir=/etc
fi
if test ${mandir} = '${prefix}/man'; then
mandir=/usr/share/man
fi
fi
;;
esac
if test ${prefix} = ${ac_default_prefix} || test ${prefix} = 'NONE'; then
if test ${localstatedir} = '${prefix}/var'; then
localstatedir=/var
fi
fi
BUILD_PLATFORM=${build}
BUILD_CPU=${build_cpu}
BUILD_VENDOR=${build_vendor}
BUILD_OS=${build_os}
AC_SUBST(BUILD_PLATFORM)
AC_SUBST(BUILD_CPU)
AC_SUBST(BUILD_VENDOR)
AC_SUBST(BUILD_OS)
HOST_PLATFORM=${host}
HOST_CPU=${host_cpu}
HOST_VENDOR=${host_vendor}
HOST_OS=${host_os}
AC_SUBST(HOST_PLATFORM)
AC_SUBST(HOST_CPU)
AC_SUBST(HOST_VENDOR)
AC_SUBST(HOST_OS)
PBX_WINARCH=0
case "${host_os}" in
freebsd*)
OSARCH=FreeBSD
;;
netbsd*)
OSARCH=NetBSD
;;
openbsd*)
OSARCH=OpenBSD
;;
solaris*)
OSARCH=SunOS
;;
mingw32)
OSARCH=mingw32
PBX_WINARCH=1
;;
cygwin)
OSARCH=cygwin
PBX_WINARCH=1
;;
linux-gnueabi* | linux-gnuspe)
OSARCH=linux-gnu
;;
kfreebsd*-gnu)
OSARCH=kfreebsd-gnu
;;
*)
OSARCH=${host_os}
;;
esac
AC_SUBST(OSARCH)
AC_SUBST(PBX_WINARCH)
# check for uname
AC_PATH_TOOL([UNAME], [uname], No)
if test ! x"${UNAME}" = xNo; then
PBX_OSREV=$(${UNAME} -r)
fi
AC_SUBST(PBX_OSREV)
AH_TOP(
#ifndef ASTERISK_AUTOCONFIG_H
#define ASTERISK_AUTOCONFIG_H
#include "asterisk/buildopts.h"
)
AH_BOTTOM(
#endif
)
# cross-compile checks
if test "${cross_compiling}" = "yes";
then
AC_CHECK_TOOL(CC, gcc, :)
AC_CHECK_TOOL(CXX, g++, :)
AC_CHECK_TOOL(LD, ld, :)
AC_CHECK_TOOL(RANLIB, ranlib, :)
fi
# Checks for programs.
AC_PROG_CXX
AC_PROG_CPP
AC_PROG_CXXCPP
# This macro is just copied into our local acinclude.m4 from libtool.m4 so that
# the developers regenerating the configure script don't have to install libtool.
AST_PROG_LD # note, does not work on FreeBSD
AC_PROG_AWK
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_RANLIB
AST_CHECK_GNU_MAKE
AC_PROG_EGREP
AC_CHECK_TOOLS([STRIP], [strip gstrip], :)
AC_CHECK_TOOLS([AR], [ar gar], :)
GNU_LD=0
if test "x$with_gnu_ld" = "xyes" ; then
GNU_LD=1
fi
AC_SUBST(GNU_LD)
AC_PATH_PROG([BISON], [bison], :)
AC_PATH_PROG([CMP], [cmp], :)
AC_PATH_PROG([FLEX], [flex], :)
AC_PATH_PROG([GREP], [grep], :)
AC_PATH_PROG([PYTHON], [python], :)
AC_PATH_PROG([FIND], [find], :)
AC_PATH_PROG([COMPRESS], [compress], :)
AC_PATH_PROG([BASENAME], [basename], :)
AC_PATH_PROG([DIRNAME], [dirname], :)
AC_PATH_PROG([SHELL], [sh], :)
AC_PATH_PROG([LN], [ln], :)
AC_PATH_PROG([DOXYGEN], [doxygen], :)
AC_PATH_PROG([DOT], [dot], :)
AC_PATH_PROG([WGET], [wget], :)
AC_PATH_PROG([CURL], [curl], :)
AC_PATH_PROG([RUBBER], [rubber], :)
AC_PATH_PROG([CATDVI], [catdvi], :)
AC_PATH_PROG([KPATHSEA], [kpsewhich], :)
AC_PATH_PROG([XMLLINT], [xmllint], :)
AC_PATH_PROG([XMLSTARLET], [xmlstarlet], :)
AC_PATH_PROG([GIT], [git], :)
if test "${WGET}" != ":" ; then
DOWNLOAD=${WGET}
else if test "${CURL}" != ":" ; then
DOWNLOAD="${CURL} -O --progress-bar -w \"%{url_effective}\n\""
else
AC_PATH_PROG([FETCH], [fetch], [:])
DOWNLOAD=${FETCH}
fi
fi
AC_SUBST(DOWNLOAD)
AC_PATH_PROG([LDCONFIG], [ldconfig], :)
AC_PATH_PROG([SHA1SUM], [sha1sum], $ac_aux_dir/build_tools/sha1sum-sh)
AC_PATH_PROG([OPENSSL], [openssl], :)
AC_CACHE_CHECK([for bison that supports parse-param], [ac_cv_path_BISON2], [
if test "x$BISON" != "x:" ; then
# Create a temporary directory $tmp in $TMPDIR (default /tmp).
# Use mktemp if possible; otherwise fall back on mkdir,
# with $RANDOM to make collisions less likely.
: ${TMPDIR=/tmp}
{
tmp=`
(umask 077 && mktemp -d "$TMPDIR/fooXXXXXX") 2>/dev/null
` &&
test -n "$tmp" && test -d "$tmp"
} || {
tmp=$TMPDIR/foo$$-$RANDOM
(umask 077 && mkdir "$tmp")
} || exit $?
cat >$tmp/test.y <<__EOL__
%parse-param {struct parse_io *parseio}
%%
file : { \$\$ = parseio->pval = 1; }
;
%%
__EOL__
${BISON} -o ${tmp}/test.tab.c ${tmp}/test.y >/dev/null 2>&1
if test -e "${tmp}/test.tab.c"; then
ac_cv_path_BISON2=${BISON}
fi
rm -rf ${tmp}
fi
])
if test "x${ac_cv_path_BISON2}" = "x" ; then
BISON=:
PBX_BISON=0
else
PBX_BISON=1
fi
AC_SUBST(PBX_BISON)
if test "x${FLEX}" = "x:" ; then
PBX_FLEX=0
else
PBX_FLEX=1
fi
AC_SUBST(PBX_FLEX)
AC_CHECK_TOOL([SOXMIX], [soxmix], [:])
if test "${SOXMIX}" != ":" ; then
AC_DEFINE([HAVE_SOXMIX], 1, [Define to 1 if your system has soxmix application.])
fi
AC_CHECK_PROGS([MD5], [md5 md5sum gmd5sum digest])
if test "${MD5}" = "digest" ; then
MD5="${MD5} -a md5"
fi
ACX_PTHREAD
AC_LANG(C)
AC_ARG_ENABLE([dev-mode],
[AS_HELP_STRING([--enable-dev-mode],
[Turn on developer mode])],
[case "${enableval}" in
y|ye|yes) AST_DEVMODE=yes ;;
n|no) AST_DEVMODE=no ;;
noisy)
AST_DEVMODE=yes
NOISY_BUILD=yes
;;
strict)
AST_DEVMODE=yes
AST_DEVMODE_STRICT=yes
;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-dev-mode) ;;
esac])
AC_SUBST(NOISY_BUILD)
AC_SUBST(AST_DEVMODE)
AC_SUBST(AST_DEVMODE_STRICT)
AST_CODE_COVERAGE=no
AC_ARG_ENABLE([coverage],
[AS_HELP_STRING([--enable-coverage],
[Turn on code coverage tracking (for gcov)])],
[case "${enableval}" in
y|ye|yes) AST_CODE_COVERAGE=yes ;;
n|no) AST_CODE_COVERAGE=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-coverage) ;;
esac])
AC_SUBST(AST_CODE_COVERAGE)
# AST_EXT_LIB_SETUP is used to tell configure to handle variables for
# various packages.
# $1 is the prefix for the variables in makeopts and autoconfig.h
# $2 is the short comment, $4 is the long comment
# $3 is the name used in --with- or --without- flags for configure.
#
# Package option names should be in alphabetical order
# by the --with option name (the third field),
# to make things easier for the users.
AST_EXT_LIB_SETUP([ALSA], [Advanced Linux Sound Architecture], [asound])
AST_EXT_LIB_SETUP([BFD], [Debug symbol decoding], [bfd])
# BKTR is used for backtrace support on platforms that do not
# have it natively.
AST_EXT_LIB_SETUP([BKTR], [Stack Backtrace], [execinfo])
AST_EXT_LIB_SETUP([BLUETOOTH], [Bluetooth], [bluetooth])
AST_EXT_LIB_SETUP([CAP], [POSIX 1.e capabilities], [cap])
AST_EXT_LIB_SETUP([COROSYNC], [Corosync], [cpg])
AST_EXT_LIB_SETUP_OPTIONAL([COROSYNC_CFG_STATE_TRACK], [A callback only in corosync 1.x], [COROSYNC], [cfg])
AST_EXT_LIB_SETUP([CURSES], [curses], [curses])
AST_EXT_LIB_SETUP([CRYPT], [password and data encryption], [crypt])
AST_EXT_LIB_SETUP([CRYPTO], [OpenSSL Cryptography], [crypto])
AST_EXT_LIB_SETUP_OPTIONAL([OPENSSL_SRTP], [OpenSSL SRTP Extension Support], [CRYPTO], [crypto])
AST_EXT_LIB_SETUP([DAHDI], [DAHDI], [dahdi])
AST_EXT_LIB_SETUP([FFMPEG], [Ffmpeg and avcodec], [avcodec])
AST_EXT_LIB_SETUP([GSM], [External GSM], [gsm], [, use 'internal' GSM otherwise])
AST_EXT_LIB_SETUP([ILBC], [System iLBC], [ilbc], [, use 'internal' iLBC otherwise])
AST_EXT_LIB_SETUP([GTK2], [gtk2], [gtk2])
AST_EXT_LIB_SETUP([GMIME], [GMime], [gmime])
AST_EXT_LIB_SETUP([OPENH323], [OpenH323], [h323])
AST_EXT_LIB_SETUP([HOARD], [Hoard Memory Allocator], [hoard])
AST_EXT_LIB_SETUP([ICAL], [iCal], [ical])
AST_EXT_LIB_SETUP([ICONV], [Iconv], [iconv])
AST_EXT_LIB_SETUP([IKSEMEL], [Iksemel Jabber], [iksemel])
AST_EXT_LIB_SETUP([IMAP_TK], [UW IMAP Toolkit], [imap])
AST_EXT_LIB_SETUP([INOTIFY], [inotify support], [inotify])
AST_EXT_LIB_SETUP([IODBC], [iODBC], [iodbc])
AST_EXT_LIB_SETUP([ISDNNET], [ISDN4Linux], [isdnnet])
AST_EXT_LIB_SETUP([JACK], [Jack Audio Connection Kit], [jack])
AST_EXT_LIB_SETUP([JANSSON], [Jansson JSON library], [jansson])
AST_EXT_LIB_SETUP([URIPARSER], [uriparser library], [uriparser])
AST_EXT_LIB_SETUP([KQUEUE], [kqueue support], [kqueue])
AST_EXT_LIB_SETUP([LDAP], [OpenLDAP], [ldap])
AST_LIBCURL_CHECK_CONFIG([], [7.10.1])
AST_EXT_LIB_SETUP([LIBEDIT], [NetBSD Editline library], [libedit], [, use 'internal' Editline otherwise])
AST_EXT_LIB_SETUP([LIBXML2], [LibXML2], [libxml2])
AST_EXT_LIB_SETUP([LIBXSLT], [LibXSLT], [libxslt])
AST_EXT_LIB_SETUP_OPTIONAL([LIBXSLT_CLEANUP], [LibXSLT Library Cleanup Function], [LIBXSLT], [libxslt])
AST_EXT_LIB_SETUP([LTDL], [libtool], [ltdl])
AST_EXT_LIB_SETUP([LUA], [Lua], [lua])
AST_EXT_LIB_SETUP([MISDN], [mISDN user], [misdn])
AST_EXT_LIB_SETUP([MYSQLCLIENT], [MySQL client], [mysqlclient])
AST_EXT_LIB_SETUP([NBS], [Network Broadcast Sound], [nbs])
AST_EXT_LIB_SETUP([NCURSES], [ncurses], [ncurses])
AST_EXT_LIB_SETUP([NEON], [neon], [neon])
AST_EXT_LIB_SETUP([NEON29], [neon29], [neon29])
AST_EXT_LIB_SETUP([NETSNMP], [Net-SNMP], [netsnmp])
AST_EXT_LIB_SETUP([NEWT], [newt], [newt])
AST_EXT_LIB_SETUP([OGG], [OGG], [ogg])
AST_EXT_LIB_SETUP([OPENR2], [MFR2], [openr2])
AST_EXT_LIB_SETUP([OSPTK], [OSP Toolkit], [osptk])
AST_EXT_LIB_SETUP([OSS], [Open Sound System], [oss])
AST_EXT_LIB_SETUP([PGSQL], [PostgreSQL], [postgres])
AST_EXT_LIB_SETUP([PJPROJECT], [PJPROJECT], [pjproject])
AST_EXT_LIB_SETUP([POPT], [popt], [popt])
AST_EXT_LIB_SETUP_OPTIONAL([PJ_TRANSACTION_GRP_LOCK], [PJSIP Transaction Group Lock Support], [PJPROJECT], [pjsip])
AST_EXT_LIB_SETUP_OPTIONAL([PJSIP_REPLACE_MEDIA_STREAM], [PJSIP Media Stream Replacement Support], [PJPROJECT], [pjsip])
AST_EXT_LIB_SETUP([PORTAUDIO], [PortAudio], [portaudio])
AST_EXT_LIB_SETUP([PRI], [ISDN PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_L2_PERSISTENCE], [ISDN Layer 2 persistence option], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_DATETIME_SEND], [ISDN PRI Date/time ie send policy], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_MWI_V2], [ISDN PRI Message Waiting Indication (Fixed)], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_DISPLAY_TEXT], [ISDN PRI user display text IE contents during call], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_MWI], [ISDN PRI Message Waiting Indication], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_MCID], [ISDN PRI Malicious Call ID], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_CALL_WAITING], [ISDN PRI call waiting supplementary service], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_AOC_EVENTS], [ISDN PRI advice of charge supplementary service events], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_TRANSFER], [ISDN PRI call transfer supplementary service], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_CCSS], [ISDN PRI call completion supplementary service], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_HANGUP_FIX], [ISDN PRI hangup fix], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_SUBADDR], [ISDN PRI subaddressing], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_CALL_HOLD], [ISDN PRI call hold], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_CALL_REROUTING], [ISDN PRI call rerouting and call deflection], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_SETUP_KEYPAD], [ISDN PRI keypad facility in SETUP], [PRI], [pri])
# ------------------------------------v
# TODO: The code can be changed to always include these features now.
# These features will always be present if pri_connected_line_update is available.
AST_EXT_LIB_SETUP_OPTIONAL([PRI_INBANDDISCONNECT], [ISDN PRI set_inbanddisconnect], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_PROG_W_CAUSE], [ISDN progress with cause], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_SERVICE_MESSAGES], [ISDN service messages], [PRI], [pri])
AST_EXT_LIB_SETUP_OPTIONAL([PRI_REVERSE_CHARGE], [ISDN reverse charge], [PRI], [pri])
# ------------------------------------^
AST_EXT_LIB_SETUP([PWLIB], [PWlib], [pwlib])
AST_EXT_LIB_SETUP([RADIUS], [Radius Client], [radius])
AST_EXT_LIB_SETUP([RESAMPLE], [LIBRESAMPLE], [resample])
AST_EXT_LIB_SETUP([SDL], [Sdl], [sdl])
AST_EXT_LIB_SETUP([SDL_IMAGE], [Sdl Image], [SDL_image])
AST_OPTION_ONLY([sounds-cache], [SOUNDS_CACHE_DIR], [cached sound tarfiles], [])
AST_EXT_LIB_SETUP([SPANDSP], [SPANDSP], [spandsp])
AST_EXT_LIB_SETUP([SS7], [ISDN SS7], [ss7])
AST_EXT_LIB_SETUP([SPEEX], [Speex], [speex])
AST_EXT_LIB_SETUP([SPEEX_PREPROCESS], [Speex preprocess routines], [speex])
AST_EXT_LIB_SETUP([SPEEXDSP], [SpeexDSP], [speexdsp])
AST_EXT_LIB_SETUP_DEPENDENT([SPEEX_PREPROCESS], [speex_preprocess_ctl], [], [speex])
AST_EXT_LIB_SETUP([SQLITE], [SQLite], [sqlite])
AST_EXT_LIB_SETUP([SQLITE3], [SQLite], [sqlite3])
AST_EXT_LIB_SETUP([SRTP], [Secure RTP], [srtp])
AST_EXT_LIB_SETUP_OPTIONAL([SRTP_SHUTDOWN], [SRTP Library Shutdown Function], [SRTP], [srtp])
AST_EXT_LIB_SETUP([OPENSSL], [OpenSSL Secure Sockets Layer], [ssl])
AST_EXT_LIB_SETUP([SUPPSERV], [mISDN Supplemental Services], [suppserv])
AST_EXT_LIB_SETUP([FREETDS], [FreeTDS], [tds])
AST_EXT_LIB_SETUP([TERMCAP], [Termcap], [termcap])
AST_EXT_LIB_SETUP([TIMERFD], [timerfd], [timerfd])
AST_EXT_LIB_SETUP([TINFO], [Term Info], [tinfo])
AST_EXT_LIB_SETUP([TONEZONE], [tonezone], [tonezone])
AST_EXT_LIB_SETUP([UNIXODBC], [unixODBC], [unixodbc])
AST_EXT_LIB_SETUP([VORBIS], [Vorbis], [vorbis])
AST_EXT_LIB_SETUP([VPB], [Voicetronix API], [vpb])
AST_EXT_LIB_SETUP([X11], [X11], [x11])
AST_EXT_LIB_SETUP([ZLIB], [zlib compression], [z])
# check for basic system features and functionality before
# checking for package libraries
AC_FUNC_ALLOCA
AC_HEADER_DIRENT
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS([arpa/inet.h fcntl.h inttypes.h libintl.h limits.h locale.h malloc.h netdb.h netinet/in.h stddef.h stdint.h stdlib.h string.h strings.h sys/event.h sys/file.h sys/ioctl.h sys/param.h sys/socket.h sys/time.h syslog.h termios.h unistd.h utime.h arpa/nameser.h sys/io.h])
# Any one of these packages support a mandatory requirement, so we want to check on them as early as possible.
AST_EXT_LIB_CHECK([TERMCAP], [termcap], [tgetent], [])
AST_EXT_LIB_CHECK([TINFO], [tinfo], [tgetent], [])
AST_EXT_LIB_CHECK([CURSES], [curses], [initscr], [curses.h])
AST_EXT_LIB_CHECK([NCURSES], [ncurses], [initscr], [curses.h])
EDITLINE_LIB=""
if test "x$TERMCAP_LIB" != "x" ; then
EDITLINE_LIB="$TERMCAP_LIB"
elif test "x$TINFO_LIB" != "x" ; then
EDITLINE_LIB="$TINFO_LIB"
elif test "x$CURSES_LIB" != "x" ; then
EDITLINE_LIB="$CURSES_LIB"
elif test "x$NCURSES_LIB" != "x" ; then
EDITLINE_LIB="$NCURSES_LIB"
else
AC_MSG_ERROR([*** termcap support not found (on modern systems, this typically means the ncurses development package is missing)])
fi
AC_SUBST(EDITLINE_LIB)
# Find required UUID support.
# * -luuid on Linux
# * -le2fs-uuid on OpenBSD
# * in libsystem on OS X
AST_EXT_LIB_CHECK([LIBUUID], [uuid], [uuid_generate_random], [uuid/uuid.h], [])
AST_EXT_LIB_CHECK([E2FSUUID], [e2fs-uuid], [uuid_generate_random], [uuid/uuid.h], [])
AC_CHECK_FUNCS([uuid_generate_random], [SYSUUID=true], [SYSUUID=""])
if test "x$LIBUUID_LIB" != "x" ; then
UUID_INCLUDE="$LIBUUID_INCLUDE"
UUID_LIB="$LIBUUID_LIB"
elif test "x$E2FSUUID_LIB" != "x" ; then
UUID_INCLUDE="$E2FSUUID_INCLUDE"
UUID_LIB="$E2FSUUID_LIB"
elif test "x$SYSUUID" != "x" ; then
UUID_INCLUDE=""
UUID_LIB=""
else
AC_MSG_ERROR([*** uuid support not found (this typically means the uuid development package is missing)])
fi
AC_SUBST(UUID_INCLUDE)
AC_SUBST(UUID_LIB)
# Find required JSON support.
AST_EXT_LIB_CHECK([JANSSON], [jansson], [json_dumps], [jansson.h])
if test "x$JANSSON_LIB" == "x"; then
AC_MSG_ERROR([*** JSON support not found (this typically means the libjansson development package is missing)])
fi
AST_EXT_LIB_CHECK([URIPARSER], [uriparser], [uriParseUriA], [uriparser/Uri.h])
# Another mandatory item (unless it's explicitly disabled)
AC_ARG_ENABLE([xmldoc],
[AS_HELP_STRING([--disable-xmldoc],
[Explicitly disable XML documentation])],
[case "${enableval}" in
y|ye|yes) disable_xmldoc=no ;;
n|no) disable_xmldoc=yes ;;
*) AC_MSG_ERROR(bad value ${enableval} for --disable-xmldoc) ;;
esac], [disable_xmldoc=no])
if test "${disable_xmldoc}" != "yes"; then
AST_EXT_TOOL_CHECK([LIBXML2], [xml2-config], , ,
[#include <libxml/tree.h>
#include <libxml/parser.h>],
[LIBXML_TEST_VERSION])
if test "${PBX_LIBXML2}" != 1; then
AC_MSG_NOTICE(*** XML documentation will not be available because the 'libxml2' development package is missing.)
AC_MSG_NOTICE(*** Please run the 'configure' script with the '--disable-xmldoc' parameter option)
AC_MSG_NOTICE(*** or install the 'libxml2' development package.)
exit 1
fi
AST_EXT_LIB_CHECK([LIBXSLT], [xslt], [xsltLoadStylesheetPI], [libxslt/xsltInternals.h], [${LIBXML2_LIB}], [${LIBXML2_INCLUDE}])
AST_EXT_LIB_CHECK([LIBXSLT_CLEANUP], [xslt], [xsltCleanupGlobals], [libxslt/xsltInternals.h], [${LIBXML2_LIB}], [${LIBXML2_INCLUDE}])
fi
# some embedded systems omit internationalization (locale) support
AC_CHECK_HEADERS([xlocale.h])
AC_CHECK_HEADERS([winsock.h winsock2.h])
AC_CHECK_HEADER([sys/poll.h],
[],
AC_DEFINE([AST_POLL_COMPAT], 1, [Define to 1 if internal poll should be used.]))
AC_SYS_LARGEFILE
# Checks for typedefs, structures, and compiler characteristics.
AC_HEADER_STDBOOL
AC_C_CONST
AC_TYPE_UID_T
AC_C_INLINE
AC_TYPE_LONG_DOUBLE_WIDER
AC_TYPE_MODE_T
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_CHECK_MEMBERS([struct stat.st_blksize])
AC_CHECK_MEMBERS([struct ucred.uid, struct ucred.cr_uid, struct sockpeercred.uid], [], [], [#include <sys/types.h>
#include <sys/socket.h> ])
AC_CHECK_MEMBERS([struct ifreq.ifr_ifru.ifru_hwaddr], [], [], [#include <net/if.h>])
AC_HEADER_TIME
AC_STRUCT_TM
AC_C_VOLATILE
AC_CHECK_TYPES([ptrdiff_t])
# Checks for library functions.
AC_FUNC_CHOWN
AC_FUNC_CLOSEDIR_VOID
AC_FUNC_ERROR_AT_LINE
AST_FUNC_FORK
AC_FUNC_FSEEKO
AC_PROG_GCC_TRADITIONAL
# XXX: these are commented out until we determine whether it matters if our malloc()
# acts exactly like glibc's or not
# AC_FUNC_MALLOC
# AC_FUNC_REALLOC
AC_FUNC_MEMCMP
AC_FUNC_MMAP
AC_FUNC_SELECT_ARGTYPES
AC_FUNC_SETVBUF_REVERSED
AC_TYPE_SIGNAL
AC_FUNC_STAT
AC_FUNC_STRCOLL
AC_FUNC_STRFTIME
AC_FUNC_STRNLEN
AC_FUNC_STRTOD
AC_FUNC_UTIME_NULL
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([asprintf atexit closefrom dup2 eaccess endpwent euidaccess ffsll ftruncate getcwd gethostbyname gethostname getloadavg gettimeofday glob htonll ioperm inet_ntoa isascii memchr memmove memset mkdir mkdtemp munmap ntohll newlocale ppoll putenv re_comp regcomp select setenv socket strcasecmp strcasestr strchr strcspn strdup strerror strlcat strlcpy strncasecmp strndup strnlen strrchr strsep strspn strstr strtod strtol strtold strtoq unsetenv utime vasprintf getpeereid sysctl swapctl])
# NOTE: we use AC_CHECK_LIB to get -lm into the arguments for later checks,
# so that AC_CHECK_FUNCS can detect functions in that library.
AC_CHECK_LIB([m], [sqrt])
# BSD might not have exp2, and/or log2
AC_CHECK_FUNCS([exp2 log2 exp10 log10 sin cos tan asin acos atan atan2 pow rint exp log remainder fmod round roundf trunc floor ceil])
# Certain architectures don't really have long double, even though
# AC_CHECK_FUNCS would otherwise find the following functions.
if test "x${ac_cv_type_long_double_wider}" = "xyes" ; then
AC_CHECK_FUNCS([exp2l log2l exp10l log10l sinl cosl tanl asinl acosl atanl atan2l powl sqrtl rintl expl logl remainderl fmodl roundl truncl floorl ceill])
fi
AC_MSG_CHECKING(for LLONG_MAX in limits.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <limits.h>],
[long long foo = LLONG_MAX])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_LLONG_MAX], 1, [Define to 1 if limits.h includes a LLONG_MAX definition.]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for timersub in time.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <sys/time.h>],
[struct timeval *a; timersub(a, a, a);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_TIMERSUB], 1, [Define to 1 if your system defines timersub.]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for a version of GNU ld that supports the --dynamic-list flag)
old_LDFLAGS=${LDFLAGS}
cat >conftest.dynamics <<_ACEOF
{
*ast_*;
};
_ACEOF
LDFLAGS="${LDFLAGS} -Wl,--dynamic-list,conftest.dynamics"
PBX_DYNAMIC_LIST=0
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([], [])],
PBX_DYNAMIC_LIST=1
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no)
)
AC_SUBST(PBX_DYNAMIC_LIST)
LDFLAGS=${old_LDFLAGS}
rm -f conftest.dynamics
AC_CHECK_HEADER([sys/poll.h],
[HAS_POLL=1]
AC_DEFINE([HAVE_SYS_POLL_H], 1, [Define to 1 if your system has working sys/poll.h]),
)
AC_ARG_ENABLE([internal-poll],
[AS_HELP_STRING([--enable-internal-poll],
[Use Asterisk's poll implementation])],
[case "${enableval}" in
y|ye|yes) HAS_POLL="";;
n|no) HAS_POLL="${HAS_POLL}" ;;
*) AC_MSG_ERROR(bad value ${enableval} for --enable-internal-poll) ;;
esac])
AC_SUBST(HAS_POLL)
AC_ARG_ENABLE([asteriskssl],
[AS_HELP_STRING([--disable-asteriskssl],
[Disable Asterisk's SSL wrapper library])],
[case "${enableval}" in
y|ye|yes) AST_ASTERISKSSL=yes ;;
n|no) AST_ASTERISKSSL=no ;;
*) AC_MSG_ERROR(bad value ${enableval} for --disable-asteriskssl) ;;
esac], [AST_ASTERISKSSL=yes])
AC_SUBST(AST_ASTERISKSSL)
# https support (in main/http.c) uses funopen on BSD systems,
# fopencookie on linux
AC_CHECK_FUNCS([funopen fopencookie])
AC_CHECK_FUNCS([inet_aton])
# check if we have IP_PKTINFO constant defined
AC_MSG_CHECKING(for IP_PKTINFO)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <netinet/in.h>],
[int pi = IP_PKTINFO;])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_PKTINFO], 1, [Define to 1 if your system defines IP_PKTINFO.]),
AC_MSG_RESULT(no)
)
# some systems already have gethostbyname_r so we don't need to build ours in main/utils.c
AC_SEARCH_LIBS(gethostbyname_r, [socket nsl])
AC_MSG_CHECKING(for gethostbyname_r with 6 arguments)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <stdlib.h>
#include <netdb.h>],
[struct hostent *he = gethostbyname_r((const char *)NULL, (struct hostent *)NULL, (char *)NULL, (int)0, (struct hostent **)NULL, (int *)NULL);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_GETHOSTBYNAME_R_6], 1, [Define to 1 if your system has gethostbyname_r with 6 arguments.]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for gethostbyname_r with 5 arguments)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <stdlib.h>
#include <netdb.h>],
[struct hostent *he = gethostbyname_r((const char *)NULL, (struct hostent *)NULL, (char *)NULL, (int)0, (int *)NULL);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_GETHOSTBYNAME_R_5], 1, [Define to 1 if your system has gethostbyname_r with 5 arguments.]),
AC_MSG_RESULT(no)
)
AC_CHECK_HEADER([byteswap.h], [AC_DEFINE_UNQUOTED([HAVE_BYTESWAP_H], 1, [Define to 1 if byteswap.h macros are available.])])
AC_MSG_CHECKING(for __swap16 variant of <sys/endian.h> byteswapping macros)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <sys/endian.h>], [int a = 1; int b = __swap16(a);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_SYS_ENDIAN_SWAP16], 1, [Define to 1 if your sys/endian.h header file provides the __swap16 macro.]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for bswap16 variant of <sys/endian.h> byteswapping macros)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <sys/endian.h>], [int a = 1; int b = bswap16(a);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_SYS_ENDIAN_BSWAP16], 1, [Define to 1 if your sys/endian.h header file provides the bswap16 macro.]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for locale_t in locale.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <locale.h>], [locale_t lt = NULL])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_LOCALE_T_IN_LOCALE_H], 1, [Define to 1 if your system defines the locale_t type in locale.h]),
AC_MSG_RESULT(no)
AC_MSG_CHECKING(for locale_t in xlocale.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <xlocale.h>], [locale_t lt = NULL])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_LOCALE_T_IN_XLOCALE_H], 1, [Define to 1 if your system defines the locale_t type in xlocale.h]),
AC_MSG_RESULT(no)
)
)
AC_MSG_CHECKING(for O_EVTONLY in fcntl.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <fcntl.h>], [int a = O_EVTONLY;])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_O_EVTONLY], 1, [Define to 1 if your system defines the file flag O_EVTONLY in fcntl.h]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for O_SYMLINK in fcntl.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <fcntl.h>], [int a = O_SYMLINK;])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_O_SYMLINK], 1, [Define to 1 if your system defines the file flag O_SYMLINK in fcntl.h]),
AC_MSG_RESULT(no)
)
AST_C_DEFINE_CHECK([PTHREAD_RWLOCK_INITIALIZER], [PTHREAD_RWLOCK_INITIALIZER], [pthread.h])
AC_MSG_CHECKING(for PTHREAD_RWLOCK_PREFER_WRITER_NP in pthread.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <pthread.h>], [int a = PTHREAD_RWLOCK_PREFER_WRITER_NP;])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_PTHREAD_RWLOCK_PREFER_WRITER_NP], 1, [Define to 1 if your system defines PTHREAD_RWLOCK_PREFER_WRITER_NP in pthread.h]),
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for PTHREAD_MUTEX_RECURSIVE_NP in pthread.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <pthread.h>], [int a = PTHREAD_MUTEX_RECURSIVE_NP;])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_PTHREAD_MUTEX_RECURSIVE_NP], 1, [Define to 1 if your system defines PTHREAD_MUTEX_RECURSIVE_NP in pthread.h]),
AC_MSG_RESULT(no)
)
save_LIBS="$LIBS"
save_CFLAGS="$CFLAGS"
LIBS="$PTHREAD_LIBS $LIBS"
CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
AC_MSG_CHECKING(for pthread_rwlock_timedwrlock() in pthread.h)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM(
[#include <pthread.h>
#include <time.h>],
[pthread_rwlock_t foo; struct timespec bar; pthread_rwlock_timedwrlock(&foo, &bar)])
],[
AC_MSG_RESULT(yes)
ac_cv_pthread_rwlock_timedwrlock="yes"
],[
AC_MSG_RESULT(no)
ac_cv_pthread_rwlock_timedwrlock="no"
]
)
# Some platforms define sem_init(), but only support sem_open(). joyous.
AC_MSG_CHECKING(for working unnamed semaphores)
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([#include <semaphore.h>],
[sem_t sem; return sem_init(&sem, 0, 0);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAS_WORKING_SEMAPHORE], 1, [Define to 1 if anonymous semaphores work.]),
AC_MSG_RESULT(no)
)
LIBS="$save_LIBS"
CFLAGS="$save_CFLAGS"
if test "${ac_cv_pthread_rwlock_timedwrlock}" = "yes"; then
AC_DEFINE([HAVE_PTHREAD_RWLOCK_TIMEDWRLOCK], 1, [Define if your system has pthread_rwlock_timedwrlock()])
fi
AC_MSG_CHECKING(if PTHREAD_ONCE_INIT needs braces)
saved_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} -Werror -Wmissing-braces"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <pthread.h>
void empty(){}],
[pthread_once_t once = PTHREAD_ONCE_INIT; pthread_once(&once, empty);])
],[
AC_MSG_RESULT(no)
ac_cv_pthread_once_needsbraces="no"
],[
AC_MSG_RESULT(yes)
ac_cv_pthread_once_needsbraces="yes"
]
)
CFLAGS="${saved_CFLAGS}"
if test "${ac_cv_pthread_once_needsbraces}" = "yes"; then
AC_DEFINE([PTHREAD_ONCE_INIT_NEEDS_BRACES], 1, [Define if your system needs braces around PTHREAD_ONCE_INIT])
fi
AST_C_DEFINE_CHECK([PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP], [PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP], [pthread.h])
# Can we compare a mutex to its initial value?
# Generally yes on OpenBSD/FreeBSD and no on Mac OS X.
AC_MSG_CHECKING(whether we can compare a mutex to its initial value)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <pthread.h>], [pthread_mutex_t lock;
if ((lock) != ((pthread_mutex_t) PTHREAD_MUTEX_INITIALIZER)) {
return 0;
}
return 0])],
AC_MSG_RESULT(yes)
AC_DEFINE([CAN_COMPARE_MUTEX_TO_INIT_VALUE], 1, [Define to 1 if your system's implementation of mutexes supports comparison of a mutex to its initializer.]),
AC_MSG_RESULT(no)
)
#if test "${cross_compiling}" = "no";
#then
#AC_MSG_CHECKING(for working epoll support)
#AC_LINK_IFELSE(
#AC_LANG_PROGRAM([#include <sys/epoll.h>], [int res = epoll_create(10);
# if (res < 0)
# return 1;
# close (res);
# return 0;]),
#AC_MSG_RESULT(yes)
#AC_DEFINE([HAVE_EPOLL], 1, [Define to 1 if your system has working epoll support.]),
#AC_MSG_RESULT(no)
#)
#fi
# for FreeBSD thr_self
AC_CHECK_HEADERS([sys/thr.h])
AC_MSG_CHECKING(for compiler atomic operations)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([], [int foo1; int foo2 = __sync_fetch_and_add(&foo1, 1);])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_GCC_ATOMICS], 1, [Define to 1 if your GCC C compiler provides atomic operations.]),
AC_MSG_RESULT(no)
)
# glibc, AFAIK, is the only C library that makes printing a NULL to a string safe.
AC_MSG_CHECKING([if your system printf is NULL-safe.])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([#include <stdio.h>],
[printf("%s", NULL)])],
AC_DEFINE([HAVE_NULLSAFE_PRINTF], 1, [Define to 1 if your C library can safely print NULL to string formats.])
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no),
# It's unlikely an embedded system will have this.
AC_MSG_RESULT(unknown)
)
AC_MSG_CHECKING(if we can increase the maximum select-able file descriptor)
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([
#include <stdio.h>
#include <sys/select.h>
#include <sys/time.h>
#include <sys/resource.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>
], [[
struct rlimit rlim = { FD_SETSIZE * 2, FD_SETSIZE * 2 };
int fd0, fd1;
struct timeval tv = { 0, };
struct ast_fdset { long fds_bits[[1024]]; } fds = { { 0, } };
if (setrlimit(RLIMIT_NOFILE, &rlim)) { exit(1); }
if ((fd0 = open("/dev/null", O_RDONLY)) < 0) { exit(1); }
if (dup2(fd0, (fd1 = FD_SETSIZE + 1)) < 0) { exit(1); }
FD_SET(fd0, (fd_set *) &fds);
FD_SET(fd1, (fd_set *) &fds);
if (select(FD_SETSIZE + 2, (fd_set *) &fds, NULL, NULL, &tv) < 0) { exit(1); }
exit(0)]])],
AC_MSG_RESULT(yes)
AC_DEFINE([HAVE_VARIABLE_FDSET], 1, [Define to 1 if your system can support larger than default select bitmasks.]),
AC_MSG_RESULT(no),
AC_MSG_RESULT(cross-compile)
)
if test "${ac_cv_have_variable_fdset}x" = "0x"; then
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([
#include <unistd.h>
#include <sys/types.h>
#include <stdlib.h>
], [if (getuid() != 0) { exit(1); }])],
AC_DEFINE([CONFIGURE_RAN_AS_ROOT], 1, [Some configure tests will unexpectedly fail if configure is run by a non-root user. These may be able to be tested at runtime.]))
fi
AST_GCC_ATTRIBUTE(pure)
AST_GCC_ATTRIBUTE(malloc)
AST_GCC_ATTRIBUTE(const)
AST_GCC_ATTRIBUTE(unused)
AST_GCC_ATTRIBUTE(always_inline)
AST_GCC_ATTRIBUTE(deprecated)
AST_GCC_ATTRIBUTE(sentinel)
AST_GCC_ATTRIBUTE(warn_unused_result)
AST_GCC_ATTRIBUTE(may_alias)
AST_GCC_ATTRIBUTE(constructor)
AST_GCC_ATTRIBUTE(destructor)
AC_MSG_CHECKING(for -ffunction-sections support)
saved_CFLAGS="${CFLAGS}"
CFLAGS="${CFLAGS} -ffunction-sections"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([], [int x = 1;])],
AC_MSG_RESULT(yes)
[saved_LDFLAGS="${LDFLAGS}"]
[LDFLAGS="${LDFLAGS} -Wl,--gc-sections"]
AC_MSG_CHECKING(for --gc-sections support)
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([], [int x = 1;])],
AC_MSG_RESULT(yes)
[GC_CFLAGS="-ffunction-sections"]
[[GC_LDFLAGS="-Wl,--gc-sections"]],
AC_MSG_RESULT(no)
)
[LDFLAGS="${saved_LDFLAGS}"],
AC_MSG_RESULT(no)
)
CFLAGS="${saved_CFLAGS}"
AC_SUBST(GC_CFLAGS)