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libzmq/configure.ac
Laszlo Boszormenyi (GCS) be387d5e56 Last bits of Hurd support
2016-01-20 07:18:22 +01:00

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# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_PREREQ(2.61)
#
# The 0MQ version number is extracted from include/zmq.h using
# the version.sh script. Hence, it should be updated there.
# The version in git should reflect the *next* version planned.
#
AC_INIT([zeromq],[m4_esyscmd([./version.sh])],[zeromq-dev@lists.zeromq.org])
AC_CONFIG_AUX_DIR(config)
AC_CONFIG_MACRO_DIR(config)
AC_CONFIG_HEADERS([src/platform.hpp])
AM_INIT_AUTOMAKE(foreign subdir-objects tar-ustar dist-zip)
m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
# This lets us use PACKAGE_VERSION in Makefiles
AC_SUBST(PACKAGE_VERSION)
# Libtool -version-info (ABI version)
#
# Don't change this unless you know exactly what you're doing and have read and
# understand:
# http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
#
# Changes:
#
# ZeroMQ versions prior to 2.1.0 use 0:0:0 (undefined)
# ZeroMQ versions 2.1.x: 1:0:0 (ABI version 1)
# ZeroMQ version 3.0: 2:0:0 (ABI version 2)
# ZeroMQ version 3.1: 3:0:0 (ABI version 3)
# ZeroMQ version 4.0: 4:0:0 (ABI version 4)
# ZeroMQ version 4.1: 5:0:0 (ABI version 5)
#
# libzmq -version-info current:revision:age
LTVER="5:0:0"
AC_SUBST(LTVER)
# Take a copy of original flags
ZMQ_ORIG_CFLAGS="${CFLAGS:-none}"
ZMQ_ORIG_CPPFLAGS="${CPPFLAGS:-none}"
ZMQ_ORIG_CXXFLAGS="${CXXFLAGS:-none}"
# Checks for programs.
AC_PROG_CC
AC_PROG_CC_C99
AC_PROG_CXX
AM_PROG_CC_C_O
AC_PROG_SED
AC_PROG_AWK
PKG_PROG_PKG_CONFIG
m4_pattern_forbid([^PKG_[A-Z_]+$], [missing some pkg-config macros (pkg-config package)])
# Libtool configuration for different targets. See acinclude.m4
AC_ARG_VAR([XMLTO], [Path to xmlto command])
AC_PATH_PROG([XMLTO], [xmlto])
AC_ARG_VAR([ASCIIDOC], [Path to asciidoc command])
AC_PATH_PROG([ASCIIDOC], [asciidoc])
LIBZMQ_CONFIG_LIBTOOL
AC_LIBTOOL_WIN32_DLL
AC_PROG_LIBTOOL
# Check whether to build a with debug symbols
LIBZMQ_CHECK_ENABLE_DEBUG
# Check wheter to enable code coverage
LIBZMQ_WITH_GCOV
AC_MSG_CHECKING([if TIPC is available and supports nonblocking connect])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/socket.h>
#include <linux/tipc.h>
]],[[
struct sockaddr_tipc topsrv;
int sd = socket(AF_TIPC, SOCK_SEQPACKET, 0);
if (sd == -EAFNOSUPPORT) {
return 1;
}
memset(&topsrv, 0, sizeof(topsrv));
topsrv.family = AF_TIPC;
topsrv.addrtype = TIPC_ADDR_NAME;
topsrv.addr.name.name.type = TIPC_TOP_SRV;
topsrv.addr.name.name.instance = TIPC_TOP_SRV;
fcntl(sd, F_SETFL, O_NONBLOCK);
if (connect(sd, (struct sockaddr *)&topsrv, sizeof(topsrv)) != 0) {
if (errno != EINPROGRESS)
return -1;
}
]])
],
[libzmq_tipc_support=yes],
[libzmq_tipc_support=no],
[libzmq_tipc_support=no])
AC_MSG_RESULT([$libzmq_tipc_support])
AC_ARG_WITH([relaxed],
[AS_HELP_STRING([--with-relaxed],
[Switch off pedantic compiler])],
[zmq_relaxed="yes"],
[])
if test "x$zmq_relaxed" = "xyes"; then
libzmq_pedantic="no"
else
libzmq_pedantic="yes"
fi
AC_ARG_WITH([militant],
[AS_HELP_STRING([--with-militant],
[Enable militant API assertions])],
[zmq_militant="yes"],
[])
if test "x$zmq_militant" = "xyes"; then
AC_DEFINE(ZMQ_ACT_MILITANT, 1, [Enable militant API assertions])
fi
# By default compiling with -Werror except OSX.
libzmq_werror="yes"
# By default use DSO visibility
libzmq_dso_visibility="yes"
# Platform specific checks
libzmq_on_mingw32="no"
libzmq_on_cygwin="no"
libzmq_on_android="no"
libzmq_on_linux="no"
libzmq_on_gnu="no"
# Set some default features required by 0MQ code.
CPPFLAGS="-D_REENTRANT -D_THREAD_SAFE $CPPFLAGS"
# For host type checks
AC_CANONICAL_HOST
# OS-specific tests
case "${host_os}" in
*linux*)
# Define on Linux to enable all library features. Define if using a gnu compiler
if test "x$GXX" = "xyes"; then
CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
fi
AC_DEFINE(ZMQ_HAVE_LINUX, 1, [Have Linux OS])
libzmq_on_linux="yes"
if test "x$libzmq_tipc_support" = "xyes"; then
AC_DEFINE(ZMQ_HAVE_TIPC, 1, [Have TIPC support])
fi
case "${host_os}" in
*android*)
AC_DEFINE(ZMQ_HAVE_ANDROID, 1, [Have Android OS])
libzmq_on_android="yes"
;;
esac
;;
*solaris*)
# Define on Solaris to enable all library features
CPPFLAGS="-D_PTHREADS $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_SOLARIS, 1, [Have Solaris OS])
AC_CHECK_LIB(socket, socket)
AC_CHECK_LIB(nsl, gethostbyname)
AC_MSG_CHECKING([whether atomic operations can be used])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[#include <atomic.h>]],
[[uint32_t value;
atomic_cas_32 (&value, 0, 0);
return 0;]])],
[solaris_has_atomic=yes],
[solaris_has_atomic=no])
AC_MSG_RESULT([$solaris_has_atomic])
# Solaris 8 does not have atomic operations exported to user space.
if test "x$solaris_has_atomic" = "xno"; then
AC_DEFINE(ZMQ_FORCE_MUTEXES, 1, [Force to use mutexes])
fi
;;
*freebsd*)
# Define on FreeBSD to enable all library features
CPPFLAGS="-D__BSD_VISIBLE $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_FREEBSD, 1, [Have FreeBSD OS])
;;
*dragonfly*)
CPPFLAGS="-D__BSD_VISIBLE $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_DRAGONFLY, 1, [Have DragonFly OS])
;;
*darwin*)
# Define on Darwin to enable all library features
CPPFLAGS="-D_DARWIN_C_SOURCE $CPPFLAGS"
libzmq_pedantic="no"
libzmq_werror="no"
AC_DEFINE(ZMQ_HAVE_OSX, 1, [Have DarwinOSX OS])
AC_LANG_PUSH([C++])
LIBZMQ_CHECK_LANG_FLAG_PREPEND([-Wno-uninitialized])
AC_LANG_POP([C++])
;;
*netbsd*)
# Define on NetBSD to enable all library features
CPPFLAGS="-D_NETBSD_SOURCE $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_NETBSD, 1, [Have NetBSD OS])
# NetBSD 5.0 and newer provides atomic operations but we can
# only use these on systems where PR #42842 has been fixed so
# we must try and link a test program using C++.
libzmq_netbsd_has_atomic=no
AC_MSG_CHECKING([whether atomic operations can be used])
AC_LANG_PUSH([C++])
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#include <atomic.h>]],
[[uint32_t value;
atomic_cas_32 (&value, 0, 0);
return 0;]])],
[libzmq_netbsd_has_atomic=yes],
[libzmq_netbsd_has_atomic=no])
AC_LANG_POP([C++])
AC_MSG_RESULT([$libzmq_netbsd_has_atomic])
if test "x$libzmq_netbsd_has_atomic" = "xno"; then
AC_DEFINE(ZMQ_FORCE_MUTEXES, 1, [Force to use mutexes])
fi
;;
*openbsd*|*bitrig*)
# Define on OpenBSD to enable all library features
CPPFLAGS="-D_BSD_SOURCE $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_OPENBSD, 1, [Have OpenBSD OS])
;;
*nto-qnx*)
libzmq_pedantic="no"
AC_DEFINE(ZMQ_HAVE_QNXNTO, 1, [Have QNX Neutrino OS])
AC_CHECK_LIB(socket, socket)
;;
*aix*)
AC_DEFINE(ZMQ_HAVE_AIX, 1, [Have AIX OS])
;;
*hpux*)
# Define on HP-UX to enable all library features
CPPFLAGS="-D_POSIX_C_SOURCE=200112L $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_HPUX, 1, [Have HPUX OS])
LIBZMQ_CHECK_LANG_FLAG_PREPEND([-Ae])
AC_CHECK_FUNCS(gethrtime)
;;
*mingw*)
AC_DEFINE(ZMQ_HAVE_WINDOWS, 1, [Have Windows OS])
AC_DEFINE(ZMQ_HAVE_MINGW32, 1, [Have MinGW32])
AC_CHECK_HEADERS(windows.h)
AC_CHECK_LIB(ws2_32, main, ,
[AC_MSG_ERROR([cannot link with ws2_32.dll.])])
AC_CHECK_LIB(rpcrt4, main, ,
[AC_MSG_ERROR([cannot link with rpcrt4.dll.])])
AC_CHECK_LIB(iphlpapi, main, ,
[AC_MSG_ERROR([cannot link with iphlpapi.dll.])])
# mingw32 defines __int64_t as long long
AC_LANG_PUSH([C++])
LIBZMQ_CHECK_LANG_FLAG_PREPEND([-Wno-long-long])
AC_LANG_POP([C++])
libzmq_on_mingw32="yes"
libzmq_dso_visibility="no"
if test "x$enable_static" = "xyes"; then
CPPFLAGS="-DZMQ_STATIC"
fi
# Set FD_SETSIZE to 1024
CPPFLAGS=" -DFD_SETSIZE=1024 $CPPFLAGS"
;;
*cygwin*)
# Define on Cygwin to enable all library features
CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
AC_DEFINE(ZMQ_HAVE_CYGWIN, 1, [Have Cygwin])
libzmq_on_cygwin="yes"
libzmq_dso_visibility="no"
if test "x$enable_static" = "xyes"; then
AC_MSG_ERROR([Building static libraries is not supported under Cygwin])
fi
;;
gnu*)
# Define on GNU/Hurd to enable all library features. Define if using a gnu compiler
if test "x$GXX" = "xyes"; then
CPPFLAGS="-D_GNU_SOURCE $CPPFLAGS"
fi
AC_DEFINE(ZMQ_HAVE_GNU, 1, [Have GNU/Hurd OS])
libzmq_on_gnu="yes"
AC_CHECK_LIB(rt, sem_init)
;;
*)
AC_MSG_ERROR([unsupported system: ${host_os}.])
;;
esac
# Checks for libraries
AC_CHECK_LIB([pthread], [pthread_create])
AC_CHECK_LIB([rt], [clock_gettime])
#
# Check if the compiler supports -fvisibility=hidden flag. MinGW32 uses __declspec
#
if test "x$libzmq_dso_visibility" = "xyes"; then
AC_LANG_PUSH([C++])
LIBZMQ_CHECK_LANG_VISIBILITY([LIBZMQ_EXTRA_CXXFLAGS="$libzmq_cv_[]_AC_LANG_ABBREV[]_visibility_flag ${LIBZMQ_EXTRA_CXXFLAGS}"])
AC_LANG_POP([C++])
fi
# CPU-specific optimizations
case "${host_cpu}" in
*sparc*)
AC_LANG_PUSH([C++])
LIBZMQ_CHECK_LANG_FLAG_PREPEND([-mcpu=v9])
AC_LANG_POP([C++])
;;
*)
;;
esac
# Check whether to build docs / install man pages
LIBZMQ_CHECK_DOC_BUILD
# Check polling system
LIBZMQ_CHECK_POLLER([CPPFLAGS="${CPPFLAGS} -D${libzmq_cv_poller_flag}"],
[AC_MSG_ERROR([Unable to continue without polling system])])
# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(\
errno.h \
time.h \
unistd.h \
limits.h \
stddef.h \
stdlib.h \
string.h \
arpa/inet.h \
netinet/tcp.h \
netinet/in.h \
sys/socket.h \
sys/time.h)
# Check if we have ifaddrs.h header file.
AC_CHECK_HEADERS(ifaddrs.h, [AC_DEFINE(ZMQ_HAVE_IFADDRS, 1, [Have ifaddrs.h header.])])
# Check if we have sys/uio.h header file.
AC_CHECK_HEADERS(sys/uio.h, [AC_DEFINE(ZMQ_HAVE_UIO, 1, [Have uio.h header.])])
# Force not to use eventfd
AC_ARG_ENABLE([eventfd],
[AS_HELP_STRING([--disable-eventfd], [disable eventfd [default=no]])],
[zmq_enable_eventfd=$enableval],
[zmq_enable_eventfd=yes])
if test "x$zmq_enable_eventfd" = "xyes"; then
# Check if we have eventfd.h header file.
AC_CHECK_HEADERS(sys/eventfd.h,
[AC_DEFINE(ZMQ_HAVE_EVENTFD, 1, [Have eventfd extension.])])
fi
# Conditionally build performance measurement tools
AC_ARG_ENABLE([perf],
[AS_HELP_STRING([--enable-perf], [Build performance measurement tools [default=yes].])],
[zmq_enable_perf=$enableval],
[zmq_enable_perf=yes])
AM_CONDITIONAL(ENABLE_PERF, test "x$zmq_enable_perf" = "xyes")
# Conditionally build curve key generation tool
AC_ARG_ENABLE([curve-keygen],
[AS_HELP_STRING([--enable-curve-keygen], [Build curve key-generation tool [default=yes].])],
[zmq_enable_curve_keygen=$enableval],
[zmq_enable_curve_keygen=yes])
AM_CONDITIONAL(ENABLE_CURVE_KEYGEN, test "x$zmq_enable_curve_keygen" = "xyes")
# Use c++ in subsequent tests
AC_LANG_PUSH(C++)
AC_CHECK_DECLS([SO_PEERCRED],
[AC_DEFINE(ZMQ_HAVE_SO_PEERCRED, 1, [Have SO_PEERCRED socket option])],
[],
[#include <sys/socket.h>])
AC_CHECK_DECLS([LOCAL_PEERCRED],
[AC_DEFINE(ZMQ_HAVE_LOCAL_PEERCRED, 1, [Have LOCAL_PEERCRED socket option])],
[],
[#include <sys/socket.h>])
AM_CONDITIONAL(HAVE_IPC_PEERCRED, test "x$ac_cv_have_decl_SO_PEERCRED" = "xyes" || test "x$ac_cv_have_decl_LOCAL_PEERCRED" = "xyes")
AC_HEADER_STDBOOL
AC_C_CONST
AC_C_INLINE
# Checks for typedefs, structures, and compiler characteristics.
if test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes"; then
dnl 279: controlling expression is constant
dnl Fixes build with ICC 12.x
LIBZMQ_CHECK_WITH_FLAG([-wd279], [AC_TYPE_SIZE_T])
LIBZMQ_CHECK_WITH_FLAG([-wd279], [AC_TYPE_SSIZE_T])
else
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
fi
AC_HEADER_TIME
AC_TYPE_UINT32_T
AC_C_VOLATILE
# build using libgssapi_krb5
AC_ARG_WITH([libgssapi_krb5], [AS_HELP_STRING([--with-libgssapi_krb5],
[require libzmq build with libgssapi_krb5 [default=no]])],
[require_libgssapi_krb5_ext=$withval],
[require_libgssapi_krb5_ext=no])
# conditionally require libgssapi_krb5
if test "x$require_libgssapi_krb5_ext" != "xno"; then
AC_CHECK_LIB([gssapi_krb5], [gss_init_sec_context],,
AC_MSG_ERROR(libgssapi_krb5 is needed for GSSAPI security))
fi
# build using libsodium
have_sodium_library="no"
AC_ARG_WITH([libsodium], [AS_HELP_STRING([--with-libsodium],
[require libzmq build with libsodium crypto library. Requires pkg-config [default=yes]])],
[require_libsodium_ext=$withval],
[require_libsodium_ext=yes])
# conditionally require libsodium package
if test "x$require_libsodium_ext" != "xno"; then
PKG_CHECK_MODULES([sodium], [libsodium], [have_sodium_library="yes"])
fi
if test "x$have_sodium_library" != "xno"; then
AC_DEFINE(HAVE_LIBSODIUM, 1, [The libsodium library is to be used.])
# ssp library is required for libsodium on Solaris-like systems
case "${host_os}" in
*solaris*)
LDFLAGS="-lssp $LDFLAGS"
CPPFLAGS="$CPPFLAGS -Wno-long-long"
;;
esac
fi
AM_CONDITIONAL(HAVE_SODIUM, test "x$have_sodium_library" != "xno")
# build using pgm
have_pgm_library="no"
AC_ARG_WITH([pgm], [AS_HELP_STRING([--with-pgm],
[build libzmq with PGM extension. Requires pkg-config [default=no]])],
[with_pgm_ext=$withval],
[with_pgm_ext=no])
# conditionally require pgm package
if test "x$with_pgm_ext" != "xno"; then
PKG_CHECK_MODULES([pgm], [openpgm-5.2 >= 5.2], [ have_pgm_library="yes" ],
[PKG_CHECK_MODULES([pgm], [openpgm-5.1 >= 5.1],
[ have_pgm_library="yes" ])])
fi
if test "x$have_pgm_library" = "xyes"; then
AC_DEFINE(ZMQ_HAVE_OPENPGM, [1], [Have OpenPGM extension])
fi
AM_CONDITIONAL(HAVE_PGM, test "x$have_pgm_library" = "xyes")
# This uses "--with-norm" to point to the "norm" directory
# for "norm/include" and "norm/lib"
#(if "--with-norm=yes" is given, then assume installed on system)
AC_ARG_WITH([norm],
[AS_HELP_STRING([--with-norm],
[build libzmq with NORM protocol extension, optionally specifying norm path [default=no]])],
[with_norm_ext=$withval],
[with_norm_ext=no])
AC_MSG_CHECKING("with_norm_ext = ${with_norm_ext}")
if test "x$with_norm_ext" != "xno"; then
AC_DEFINE(ZMQ_HAVE_NORM, 1, [Have NORM protocol extension])
if test "x$with_norm_ext" != "xyes"; then
norm_path="${with_norm_ext}"
LIBZMQ_EXTRA_CXXFLAGS="-I${norm_path}/include ${LIBZMQ_EXTRA_CXXFLAGS}"
LIBZMQ_EXTRA_LDFLAGS="-I${norm_path}/include ${LIBZMQ_EXTRA_LDFLAGS}"
fi
LIBS="-lnorm $LIBS"
fi
# build using vmci
have_vmci_library="no"
AC_ARG_WITH([vmci], [AS_HELP_STRING([--with-vmci],
[build libzmq with VMCI transport [default=no]])],
[have_vmci_ext=$withval],
[have_vmci_ext=no])
if test "x$have_vmci_ext" != "xno"; then
AC_DEFINE(ZMQ_HAVE_VMCI, 1, [Have VMCI transport])
if test "x$have_vmci_ext" != "xyes"; then
vmci_path="${have_vmci_ext}"
LIBZMQ_VMCI_CXXFLAGS="-I${vmci_path}"
LIBZMQ_VMCI_LDFLAGS="-I${vmci_path}"
LIBZMQ_EXTRA_CXXFLAGS="${LIBZMQ_VMCI_CXXFLAGS} ${LIBZMQ_EXTRA_CXXFLAGS}"
LIBZMQ_EXTRA_LDFLAGS="${LIBZMQ_VMCI_LDFLAGS} ${LIBZMQ_EXTRA_LDFLAGS}"
fi
fi
AM_CONDITIONAL(HAVE_VMCI, test "x$have_vmci_ext" != "xno")
# Set -Wall, -Werror and -pedantic
AC_LANG_PUSH([C++])
# Check how to enable -Wall
LIBZMQ_LANG_WALL([CPPFLAGS="$libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag $CPPFLAGS"])
if test "x$libzmq_werror" = "xyes" -a "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" != "xyes"; then
LIBZMQ_LANG_WERROR([CPPFLAGS="$libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag $CPPFLAGS"])
fi
if test "x$libzmq_pedantic" = "xyes"; then
LIBZMQ_LANG_STRICT([CPPFLAGS="$libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag $CPPFLAGS"])
fi
AC_LANG_POP([C++])
AM_CONDITIONAL(BUILD_TIPC, test "x$libzmq_tipc_support" = "xyes")
AM_CONDITIONAL(ON_MINGW, test "x$libzmq_on_mingw32" = "xyes")
AM_CONDITIONAL(ON_CYGWIN, test "x$libzmq_on_cygwin" = "xyes")
AM_CONDITIONAL(ON_ANDROID, test "x$libzmq_on_android" = "xyes")
AM_CONDITIONAL(ON_LINUX, test "x$libzmq_on_linux" = "xyes")
AM_CONDITIONAL(ON_GNU, test "x$libzmq_on_gnu" = "xyes")
# Check for __atomic_Xxx compiler intrinsics
AC_LANG_PUSH([C++])
LIBZMQ_CHECK_ATOMIC_INTRINSICS([
AC_DEFINE([ZMQ_HAVE_ATOMIC_INTRINSICS],
[1],
[Whether compiler has __atomic_Xxx intrinsics.])
])
AC_LANG_POP([C++])
# Checks for library functions.
AC_TYPE_SIGNAL
AC_CHECK_FUNCS(perror gettimeofday clock_gettime memset socket getifaddrs freeifaddrs fork posix_memalign)
AC_CHECK_HEADERS([alloca.h])
LIBZMQ_CHECK_SOCK_CLOEXEC([
AC_DEFINE([ZMQ_HAVE_SOCK_CLOEXEC],
[1],
[Whether SOCK_CLOEXEC is defined and functioning.])
])
# TCP keep-alives Checks.
LIBZMQ_CHECK_SO_KEEPALIVE([
AC_DEFINE([ZMQ_HAVE_SO_KEEPALIVE],
[1],
[Whether SO_KEEPALIVE is supported.])
])
LIBZMQ_CHECK_TCP_KEEPCNT([
AC_DEFINE([ZMQ_HAVE_TCP_KEEPCNT],
[1],
[Whether TCP_KEEPCNT is supported.])
])
LIBZMQ_CHECK_TCP_KEEPIDLE([
AC_DEFINE([ZMQ_HAVE_TCP_KEEPIDLE],
[1],
[Whether TCP_KEEPIDLE is supported.])
])
LIBZMQ_CHECK_TCP_KEEPINTVL([
AC_DEFINE([ZMQ_HAVE_TCP_KEEPINTVL],
[1],
[Whether TCP_KEEPINTVL is supported.])
])
LIBZMQ_CHECK_TCP_KEEPALIVE([
AC_DEFINE([ZMQ_HAVE_TCP_KEEPALIVE],
[1],
[Whether TCP_KEEPALIVE is supported.])
])
AM_CONDITIONAL(HAVE_FORK, test "x$ac_cv_func_fork" = "xyes")
# Subst LIBZMQ_EXTRA_CFLAGS & CXXFLAGS & LDFLAGS
AC_SUBST(LIBZMQ_EXTRA_CFLAGS)
AC_SUBST(LIBZMQ_EXTRA_CXXFLAGS)
AC_SUBST(LIBZMQ_EXTRA_LDFLAGS)
AC_SUBST(LIBZMQ_VMCI_CXXFLAGS)
AC_SUBST(LIBZMQ_VMCI_LDFLAGS)
# set pkgconfigdir, allow override
AC_ARG_WITH([pkgconfigdir],
AS_HELP_STRING([--with-pkgconfigdir=PATH],
[Path to the pkgconfig directory [[LIBDIR/pkgconfig]]]),
[pkgconfigdir="$withval"],
[pkgconfigdir='${libdir}/pkgconfig'])
AC_SUBST([pkgconfigdir])
AC_CONFIG_FILES([ \
Makefile \
src/libzmq.pc \
doc/Makefile \
builds/Makefile \
builds/msvc/Makefile \
packaging/redhat/zeromq.spec])
AC_OUTPUT
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