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libzmq/acinclude.m4
Luca Boccassi 4a0c83fb12 Problem: yqueue false sharing issues on PPC64 
Solution: detect cacheline size for aligment purposes at build time
instead of hard-coding it, so that PPC and S390 can align to a value
greater than the 64 bytes default.
Uses libc getconf program, and falls back to the previous value of 64
if not found.
2019-01-19 20:08:14 +00:00

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dnl ##############################################################################
dnl # LIBZMQ_CONFIG_LIBTOOL #
dnl # Configure libtool. Requires AC_CANONICAL_HOST #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CONFIG_LIBTOOL], [{
AC_REQUIRE([AC_CANONICAL_HOST])
# Libtool configuration for different targets
case "${host_os}" in
*mingw*|*cygwin*|*msys*)
# Disable static build by default
AC_DISABLE_STATIC
;;
*)
# Everything else with static enabled
AC_ENABLE_STATIC
;;
esac
}])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_LANG_ICC([action-if-found], [action-if-not-found]) #
dnl # Check if the current language is compiled using ICC #
dnl # Adapted from http://software.intel.com/en-us/forums/showthread.php?t=67984 #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_ICC],
[AC_CACHE_CHECK([whether we are using Intel _AC_LANG compiler],
[libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler],
[_AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[[#ifndef __INTEL_COMPILER
error if not ICC
#endif
]])],
[libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler="yes" ; $1],
[libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler="no" ; $2])
])])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_LANG_SUN_STUDIO([action-if-found], [action-if-not-found]) #
dnl # Check if the current language is compiled using Sun Studio #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_SUN_STUDIO],
[AC_CACHE_CHECK([whether we are using Sun Studio _AC_LANG compiler],
[libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler],
[_AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[[#if !defined(__SUNPRO_CC) && !defined(__SUNPRO_C)
error if not sun studio
#endif
]])],
[libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler="yes" ; $1],
[libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler="no" ; $2])
])])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_LANG_CLANG([action-if-found], [action-if-not-found]) #
dnl # Check if the current language is compiled using clang #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_CLANG],
[AC_CACHE_CHECK([whether we are using clang _AC_LANG compiler],
[libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler],
[_AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[[#ifndef __clang__
error if not clang
#endif
]])],
[libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler="yes" ; $1],
[libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler="no" ; $2])
])])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_LANG_GCC4([action-if-found], [action-if-not-found]) #
dnl # Check if the current language is compiled using clang #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_GCC4],
[AC_CACHE_CHECK([whether we are using gcc >= 4 _AC_LANG compiler],
[libzmq_cv_[]_AC_LANG_ABBREV[]_gcc4_compiler],
[_AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],
[[#if (!defined __GNUC__ || __GNUC__ < 4)
error if not gcc4 or higher
#endif
]])],
[libzmq_cv_[]_AC_LANG_ABBREV[]_gcc4_compiler="yes" ; $1],
[libzmq_cv_[]_AC_LANG_ABBREV[]_gcc4_compiler="no" ; $2])
])])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_DOC_BUILD #
dnl # Check whether to build documentation and install man-pages #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_DOC_BUILD], [{
# Man pages are built/installed if asciidoc and xmlto are present
# --with-docs=no overrides this
AC_ARG_WITH([docs],
AS_HELP_STRING([--without-docs],
[Don't build and install man pages [default=build]]),
[with_docs=$withval])
AC_ARG_WITH([documentation], [AS_HELP_STRING([--without-documentation],
[Don't build and install man pages [default=build] DEPRECATED: use --without-docs])])
if test "x$with_documentation" = "xno"; then
AC_MSG_WARN([--without-documentation is DEPRECATED and will be removed in the next release, use --without-docs])
fi
if test "x$with_docs" = "xno" || test "x$with_documentation" = "xno"; then
libzmq_build_doc="no"
libzmq_install_man="no"
else
# Determine whether or not documentation should be built and installed.
libzmq_build_doc="yes"
libzmq_install_man="yes"
# Check for asciidoc and xmlto and don't build the docs if these are not installed.
AC_CHECK_PROG(libzmq_have_asciidoc, asciidoc, yes, no)
AC_CHECK_PROG(libzmq_have_xmlto, xmlto, yes, no)
if test "x$libzmq_have_asciidoc" = "xno" -o "x$libzmq_have_xmlto" = "xno"; then
libzmq_build_doc="no"
# Tarballs built with 'make dist' ship with prebuilt documentation.
if ! test -f doc/zmq.7; then
libzmq_install_man="no"
AC_MSG_WARN([You are building an unreleased version of 0MQ and asciidoc or xmlto are not installed.])
AC_MSG_WARN([Documentation will not be built and manual pages will not be installed.])
fi
fi
# Do not install man pages if on mingw
if test "x$libzmq_on_mingw" = "xyes"; then
libzmq_install_man="no"
fi
fi
AC_MSG_CHECKING([whether to build documentation])
AC_MSG_RESULT([$libzmq_build_doc])
AC_MSG_CHECKING([whether to install manpages])
AC_MSG_RESULT([$libzmq_install_man])
AM_CONDITIONAL(BUILD_DOC, test "x$libzmq_build_doc" = "xyes")
AM_CONDITIONAL(INSTALL_MAN, test "x$libzmq_install_man" = "xyes")
}])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_LANG_COMPILER([action-if-found], [action-if-not-found]) #
dnl # Check that compiler for the current language actually works #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_COMPILER], [{
# Test that compiler for the current language actually works
AC_CACHE_CHECK([whether the _AC_LANG compiler works],
[libzmq_cv_[]_AC_LANG_ABBREV[]_compiler_works],
[AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
[libzmq_cv_[]_AC_LANG_ABBREV[]_compiler_works="yes" ; $1],
[libzmq_cv_[]_AC_LANG_ABBREV[]_compiler_works="no" ; $2])
])
if test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_compiler_works" != "xyes"; then
AC_MSG_ERROR([Unable to find a working _AC_LANG compiler])
fi
}])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_COMPILERS #
dnl # Check compiler characteristics. This is so that we can AC_REQUIRE checks #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_COMPILERS], [{
# For that the compiler works and try to come up with the type
AC_LANG_PUSH([C])
LIBZMQ_CHECK_LANG_COMPILER
LIBZMQ_CHECK_LANG_ICC
LIBZMQ_CHECK_LANG_SUN_STUDIO
LIBZMQ_CHECK_LANG_CLANG
LIBZMQ_CHECK_LANG_GCC4
AC_LANG_POP([C])
AC_LANG_PUSH(C++)
LIBZMQ_CHECK_LANG_COMPILER
LIBZMQ_CHECK_LANG_ICC
LIBZMQ_CHECK_LANG_SUN_STUDIO
LIBZMQ_CHECK_LANG_CLANG
LIBZMQ_CHECK_LANG_GCC4
AC_LANG_POP([C++])
# Set GCC and GXX variables correctly
if test "x$GCC" = "xyes"; then
if test "xyes" = "x$libzmq_cv_c_intel_compiler"; then
GCC="no"
fi
fi
if test "x$GXX" = "xyes"; then
if test "xyes" = "x$libzmq_cv_cxx_intel_compiler"; then
GXX="no"
fi
fi
}])
dnl ############################################################################
dnl # LIBZMQ_CHECK_LANG_FLAG([flag], [action-if-found], [action-if-not-found]) #
dnl # Check if the compiler supports given flag. Works for C and C++ #
dnl # Sets libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_[FLAG]=yes/no #
dnl ############################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_FLAG], [{
AC_REQUIRE([AC_PROG_GREP])
AC_MSG_CHECKING([whether _AC_LANG compiler supports $1])
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag_save=$ac_[]_AC_LANG_ABBREV[]_werror_flag
ac_[]_AC_LANG_ABBREV[]_werror_flag="yes"
case "x[]_AC_LANG_ABBREV" in
xc)
libzmq_cv_check_lang_flag_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $1"
;;
xcxx)
libzmq_cv_check_lang_flag_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $1"
;;
*)
AC_MSG_WARN([testing compiler characteristic on an unknown language])
;;
esac
AC_COMPILE_IFELSE([AC_LANG_PROGRAM()],
# This hack exist for ICC, which outputs unknown options as remarks
# Remarks are not turned into errors even with -Werror on
[if ($GREP 'ignoring unknown' conftest.err ||
$GREP 'not supported' conftest.err) >/dev/null 2>&1; then
eval AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_$1)="no"
else
eval AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_$1)="yes"
fi],
[eval AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_$1)="no"])
case "x[]_AC_LANG_ABBREV" in
xc)
CFLAGS="$libzmq_cv_check_lang_flag_save_CFLAGS"
;;
xcxx)
CPPFLAGS="$libzmq_cv_check_lang_flag_save_CPPFLAGS"
;;
*)
# nothing to restore
;;
esac
# Restore the werror flag
ac_[]_AC_LANG_ABBREV[]_werror_flag=$libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag_save
# Call the action as the flags are restored
AS_IF([eval test x$]AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_$1)[ = "xyes"],
[AC_MSG_RESULT(yes) ; $2], [AC_MSG_RESULT(no) ; $3])
}])
dnl ####################################################################################
dnl # LIBZMQ_CHECK_LANG_FLAG_PREPEND([flag], [action-if-found], [action-if-not-found]) #
dnl # Check if the compiler supports given flag. Works for C and C++ #
dnl # This macro prepends the flag to CFLAGS or CPPFLAGS accordingly #
dnl # Sets libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_[FLAG]=yes/no #
dnl ####################################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_FLAG_PREPEND], [{
LIBZMQ_CHECK_LANG_FLAG([$1])
case "x[]_AC_LANG_ABBREV" in
xc)
AS_IF([eval test x$]AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_$1)[ = "xyes"],
[CFLAGS="$1 $CFLAGS"; $2], $3)
;;
xcxx)
AS_IF([eval test x$]AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_flag_$1)[ = "xyes"],
[CPPFLAGS="$1 $CPPFLAGS"; $2], $3)
;;
esac
}])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_ENABLE_DEBUG([action-if-found], [action-if-not-found]) #
dnl # Check whether to enable debug build and set compiler flags accordingly #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_ENABLE_DEBUG], [{
# Require compiler specifics
AC_REQUIRE([LIBZMQ_CHECK_COMPILERS])
# This flag is checked also in
AC_ARG_ENABLE([debug], [AS_HELP_STRING([--enable-debug],
[enable debugging information [default=disabled]])])
AC_MSG_CHECKING(whether to enable debugging information)
if test "x$enable_debug" = "xyes"; then
# GCC, clang and ICC
if test "x$GCC" = "xyes" -o \
"x$libzmq_cv_c_intel_compiler" = "xyes" -o \
"x$libzmq_cv_c_clang_compiler" = "xyes"; then
CFLAGS="-g -O0 "
elif test "x$libzmq_cv_c_sun_studio_compiler" = "xyes"; then
CFLAGS="-g0 "
fi
# GCC, clang and ICC
if test "x$GXX" = "xyes" -o \
"x$libzmq_cv_cxx_intel_compiler" = "xyes" -o \
"x$libzmq_cv_cxx_clang_compiler" = "xyes"; then
CPPFLAGS="-g -O0 "
CXXFLAGS="-g -O0 "
# Sun studio
elif test "x$libzmq_cv_cxx_sun_studio_compiler" = "xyes"; then
CPPFLAGS="-g0 "
CXXFLAGS="-g0 "
fi
if test "x$ZMQ_ORIG_CFLAGS" != "xnone"; then
CFLAGS="${CFLAGS} ${ZMQ_ORIG_CFLAGS}"
fi
if test "x$ZMQ_ORIG_CPPFLAGS" != "xnone"; then
CPPFLAGS="${CPPFLAGS} ${ZMQ_ORIG_CPPFLAGS}"
fi
if test "x$ZMQ_ORIG_CXXFLAGS" != "xnone"; then
CXXFLAGS="${CXXFLAGS} ${ZMQ_ORIG_CXXFLAGS}"
fi
AC_MSG_RESULT(yes)
else
AC_MSG_RESULT(no)
fi
}])
dnl ##############################################################################
dnl # LIBZMQ_WITH_GCOV([action-if-found], [action-if-not-found]) #
dnl # Check whether to build with code coverage #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_WITH_GCOV], [{
# Require compiler specifics
AC_REQUIRE([LIBZMQ_CHECK_COMPILERS])
AC_ARG_WITH(gcov, [AS_HELP_STRING([--with-gcov=yes/no],
[with GCC Code Coverage reporting.])],
[ZMQ_GCOV="$withval"])
AC_MSG_CHECKING(whether to enable code coverage)
if test "x$ZMQ_GCOV" = "xyes"; then
if test "x$GXX" != "xyes"; then
AC_MSG_ERROR([--with-gcov=yes works only with GCC])
fi
CFLAGS="-g -O0 -fprofile-arcs -ftest-coverage"
if test "x${ZMQ_ORIG_CPPFLAGS}" != "xnone"; then
CFLAGS="${CFLAGS} ${ZMQ_ORIG_CFLAGS}"
fi
CPPFLAGS="-g -O0 -fprofile-arcs -ftest-coverage"
if test "x${ZMQ_ORIG_CPPFLAGS}" != "xnone"; then
CPPFLAGS="${CPPFLAGS} ${ZMQ_ORIG_CPPFLAGS}"
fi
CXXFLAGS="-fprofile-arcs"
if test "x${ZMQ_ORIG_CXXFLAGS}" != "xnone"; then
CXXFLAGS="${CXXFLAGS} ${ZMQ_ORIG_CXXFLAGS}"
fi
LIBS="-lgcov ${LIBS}"
fi
AS_IF([test "x$ZMQ_GCOV" = "xyes"],
[AC_MSG_RESULT(yes) ; $1], [AC_MSG_RESULT(no) ; $2])
}])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_WITH_FLAG([flags], [macro]) #
dnl # Runs a normal autoconf check with compiler flags #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_WITH_FLAG], [{
libzmq_check_with_flag_save_CFLAGS="$CFLAGS"
libzmq_check_with_flag_save_CPPFLAGS="$CPPFLAGS"
CFLAGS="$CFLAGS $1"
CPPFLAGS="$CPPFLAGS $1"
# Execute the macro
$2
CFLAGS="$libzmq_check_with_flag_save_CFLAGS"
CPPFLAGS="$libzmq_check_with_flag_save_CPPFLAGS"
}])
dnl ##############################################################################
dnl # LIBZMQ_LANG_WALL([action-if-found], [action-if-not-found]) #
dnl # How to define -Wall for the current compiler #
dnl # Sets libzmq_cv_[]_AC_LANG_ABBREV[]__wall_flag variable to found style #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_LANG_WALL], [{
AC_MSG_CHECKING([how to enable additional warnings for _AC_LANG compiler])
libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag=""
# C compilers
case "x[]_AC_LANG_ABBREV" in
xc)
# GCC, clang and ICC
if test "x$GCC" = "xyes" -o \
"x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes" -o \
"x$libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag="-Wall"
# Sun studio
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag="-v"
fi
;;
xcxx)
# GCC, clang and ICC
if test "x$GXX" = "xyes" -o \
"x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes" -o \
"x$libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag="-Wall"
# Sun studio
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag="+w"
fi
;;
*)
;;
esac
# Call the action
if test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag" != "x"; then
AC_MSG_RESULT([$libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag])
$1
else
AC_MSG_RESULT([not found])
$2
fi
}])
dnl ####################################################################
dnl # LIBZMQ_LANG_STRICT([action-if-found], [action-if-not-found]) #
dnl # Check how to turn on strict standards compliance #
dnl ####################################################################
AC_DEFUN([LIBZMQ_LANG_STRICT], [{
AC_MSG_CHECKING([how to enable strict standards compliance in _AC_LANG compiler])
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag=""
# C compilers
case "x[]_AC_LANG_ABBREV" in
xc)
# GCC, clang and ICC
if test "x$GCC" = "xyes" -o "x$libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag="-pedantic"
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag="-strict-ansi"
# Sun studio
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag="-Xc"
fi
;;
xcxx)
# GCC, clang and ICC
if test "x$GXX" = "xyes" -o "x$libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag="-pedantic"
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag="-strict-ansi"
# Sun studio
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag="-compat=5"
fi
;;
*)
;;
esac
# Call the action
if test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag" != "x"; then
AC_MSG_RESULT([$libzmq_cv_[]_AC_LANG_ABBREV[]_strict_flag])
$1
else
AC_MSG_RESULT([not found])
$2
fi
}])
dnl ########################################################################
dnl # LIBZMQ_LANG_WERROR([action-if-found], [action-if-not-found]) #
dnl # Check how to turn warnings to errors #
dnl ########################################################################
AC_DEFUN([LIBZMQ_LANG_WERROR], [{
AC_MSG_CHECKING([how to turn warnings to errors in _AC_LANG compiler])
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag=""
# C compilers
case "x[]_AC_LANG_ABBREV" in
xc)
# GCC, clang and ICC
if test "x$GCC" = "xyes" -o "x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag="-Werror"
# Sun studio
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag="-errwarn=%all"
fi
;;
xcxx)
# GCC, clang and ICC
if test "x$GXX" = "xyes" -o "x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag="-Werror"
# Sun studio
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag="-errwarn=%all"
fi
;;
*)
;;
esac
# Call the action
if test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag" != "x"; then
AC_MSG_RESULT([$libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag])
$1
else
AC_MSG_RESULT([not found])
$2
fi
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_LANG_PRAGMA([pragma], [action-if-found], [action-if-not-found]) #
dnl # Check if the compiler supports given pragma #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_PRAGMA], [{
# Need to know how to enable all warnings
LIBZMQ_LANG_WALL
AC_MSG_CHECKING([whether _AC_LANG compiler supports pragma $1])
# Save flags
libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag_save=$ac_[]_AC_LANG_ABBREV[]_werror_flag
ac_[]_AC_LANG_ABBREV[]_werror_flag="yes"
if test "x[]_AC_LANG_ABBREV" = "xc"; then
libzmq_cv_check_lang_pragma_save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag"
elif test "x[]_AC_LANG_ABBREV" = "xcxx"; then
libzmq_cv_check_lang_pragma_save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS $libzmq_cv_[]_AC_LANG_ABBREV[]_wall_flag"
else
AC_MSG_WARN([testing compiler characteristic on an unknown language])
fi
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([], [[#pragma $1]])],
[eval AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_pragma_$1)="yes" ; AC_MSG_RESULT(yes)],
[eval AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_pragma_$1)="no" ; AC_MSG_RESULT(no)])
if test "x[]_AC_LANG_ABBREV" = "xc"; then
CFLAGS="$libzmq_cv_check_lang_pragma_save_CFLAGS"
elif test "x[]_AC_LANG_ABBREV" = "xcxx"; then
CPPFLAGS="$libzmq_cv_check_lang_pragma_save_CPPFLAGS"
fi
ac_[]_AC_LANG_ABBREV[]_werror_flag=$libzmq_cv_[]_AC_LANG_ABBREV[]_werror_flag_save
# Call the action as the flags are restored
AS_IF([eval test x$]AS_TR_SH(libzmq_cv_[]_AC_LANG_ABBREV[]_supports_pragma_$1)[ = "xyes"],
[$2], [$3])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_LANG_VISIBILITY([action-if-found], [action-if-not-found]) #
dnl # Check if the compiler supports dso visibility #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_LANG_VISIBILITY], [{
libzmq_cv_[]_AC_LANG_ABBREV[]_visibility_flag=""
if test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_intel_compiler" = "xyes" -o \
"x$libzmq_cv_[]_AC_LANG_ABBREV[]_clang_compiler" = "xyes" -o \
"x$libzmq_cv_[]_AC_LANG_ABBREV[]_gcc4_compiler" = "xyes"; then
LIBZMQ_CHECK_LANG_FLAG([-fvisibility=hidden],
[libzmq_cv_[]_AC_LANG_ABBREV[]_visibility_flag="-fvisibility=hidden"])
elif test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_sun_studio_compiler" = "xyes"; then
LIBZMQ_CHECK_LANG_FLAG([-xldscope=hidden],
[libzmq_cv_[]_AC_LANG_ABBREV[]_visibility_flag="-xldscope=hidden"])
fi
AC_MSG_CHECKING(whether _AC_LANG compiler supports dso visibility)
AS_IF([test "x$libzmq_cv_[]_AC_LANG_ABBREV[]_visibility_flag" != "x"],
[AC_MSG_RESULT(yes) ; $1], [AC_MSG_RESULT(no) ; $2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_SOCK_CLOEXEC([action-if-found], [action-if-not-found]) #
dnl # Check if SOCK_CLOEXEC is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_SOCK_CLOEXEC], [{
AC_CACHE_CHECK([whether SOCK_CLOEXEC is supported], [libzmq_cv_sock_cloexec],
[AC_TRY_RUN([/* SOCK_CLOEXEC test */
#include <sys/types.h>
#include <sys/socket.h>
int main (int argc, char *argv [])
{
int s = socket (PF_INET, SOCK_STREAM | SOCK_CLOEXEC, 0);
return (s == -1);
}
],
[libzmq_cv_sock_cloexec="yes"],
[libzmq_cv_sock_cloexec="no"],
[libzmq_cv_sock_cloexec="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_sock_cloexec" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_O_CLOEXEC([action-if-found], [action-if-not-found]) #
dnl # Check if O_CLOEXEC is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_O_CLOEXEC], [{
AC_CACHE_CHECK([whether O_CLOEXEC is supported], [libzmq_cv_o_cloexec],
[AC_TRY_RUN([/* O_CLOEXEC test */
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
int main (int argc, char *argv [])
{
int s = open ("/dev/null", O_CLOEXEC | O_RDONLY);
return (s == -1);
}
],
[libzmq_cv_o_cloexec="yes"],
[libzmq_cv_o_cloexec="no"],
[libzmq_cv_o_cloexec="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_o_cloexec" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_EVENTFD_CLOEXEC([action-if-found], [action-if-not-found]) #
dnl # Check if EFD_CLOEXEC is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_EVENTFD_CLOEXEC], [{
AC_CACHE_CHECK([whether EFD_CLOEXEC is supported], [libzmq_cv_efd_cloexec],
[AC_TRY_RUN([/* EFD_CLOEXEC test */
#include <sys/eventfd.h>
int main (int argc, char *argv [])
{
int s = eventfd (0, EFD_CLOEXEC);
return (s == -1);
}
],
[libzmq_cv_efd_cloexec="yes"],
[libzmq_cv_efd_cloexec="no"],
[libzmq_cv_efd_cloexec="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_efd_cloexec" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_ATOMIC_INSTRINSICS([action-if-found], [action-if-not-found]) #
dnl # Check if compiler supoorts __atomic_Xxx intrinsics #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_ATOMIC_INTRINSICS], [{
AC_MSG_CHECKING(whether compiler supports __atomic_Xxx intrinsics)
AC_LINK_IFELSE([AC_LANG_SOURCE([
/* atomic intrinsics test */
int v = 0;
int main (int, char **)
{
int t = __atomic_add_fetch (&v, 1, __ATOMIC_ACQ_REL);
return t;
}
])],
[AC_MSG_RESULT(yes) ; GCC_ATOMIC_BUILTINS_SUPPORTED=1 libzmq_cv_has_atomic_instrisics="yes" ; $1])
if test "x$GCC_ATOMIC_BUILTINS_SUPPORTED" != x1; then
save_LIBS=$LIBS
LIBS="$LIBS -latomic"
AC_LINK_IFELSE([AC_LANG_SOURCE([
/* atomic intrinsics test */
int v = 0;
int main (int, char **)
{
int t = __atomic_add_fetch (&v, 1, __ATOMIC_ACQ_REL);
return t;
}
])],
[AC_MSG_RESULT(yes) ; libzmq_cv_has_atomic_instrisics="yes" ; $1],
[AC_MSG_RESULT(no) ; libzmq_cv_has_atomic_instrisics="no" LIBS=$save_LIBS ; $2])
fi
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_SO_BINDTODEVICE([action-if-found], [action-if-not-found]) #
dnl # Check if SO_BINDTODEVICE is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_SO_BINDTODEVICE], [{
AC_CACHE_CHECK([whether SO_BINDTODEVICE is supported], [libzmq_cv_so_bindtodevice],
[AC_TRY_RUN([/* SO_BINDTODEVICE test */
#include <sys/socket.h>
int main (int argc, char *argv [])
{
/* Actually making the setsockopt() call requires CAP_NET_RAW */
#ifndef SO_BINDTODEVICE
return 1;
#else
return 0;
#endif
}
],
[libzmq_cv_so_bindtodevice="yes"],
[libzmq_cv_so_bindtodevice="no"],
[libzmq_cv_so_bindtodevice="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_so_bindtodevice" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_SO_KEEPALIVE([action-if-found], [action-if-not-found]) #
dnl # Check if SO_KEEPALIVE is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_SO_KEEPALIVE], [{
AC_CACHE_CHECK([whether SO_KEEPALIVE is supported], [libzmq_cv_so_keepalive],
[AC_TRY_RUN([/* SO_KEEPALIVE test */
#include <sys/types.h>
#include <sys/socket.h>
int main (int argc, char *argv [])
{
int s, rc, opt = 1;
return (
((s = socket (PF_INET, SOCK_STREAM, 0)) == -1) ||
((rc = setsockopt (s, SOL_SOCKET, SO_KEEPALIVE, (char*) &opt, sizeof (int))) == -1)
);
}
],
[libzmq_cv_so_keepalive="yes"],
[libzmq_cv_so_keepalive="no"],
[libzmq_cv_so_keepalive="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_so_keepalive" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_TCP_KEEPCNT([action-if-found], [action-if-not-found]) #
dnl # Check if TCP_KEEPCNT is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_TCP_KEEPCNT], [{
AC_CACHE_CHECK([whether TCP_KEEPCNT is supported], [libzmq_cv_tcp_keepcnt],
[AC_TRY_RUN([/* TCP_KEEPCNT test */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
int main (int argc, char *argv [])
{
int s, rc, opt = 1;
return (
((s = socket (PF_INET, SOCK_STREAM, 0)) == -1) ||
((rc = setsockopt (s, SOL_SOCKET, SO_KEEPALIVE, (char*) &opt, sizeof (int))) == -1) ||
((rc = setsockopt (s, IPPROTO_TCP, TCP_KEEPCNT, (char*) &opt, sizeof (int))) == -1)
);
}
],
[libzmq_cv_tcp_keepcnt="yes"],
[libzmq_cv_tcp_keepcnt="no"],
[libzmq_cv_tcp_keepcnt="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_tcp_keepcnt" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_TCP_KEEPIDLE([action-if-found], [action-if-not-found]) #
dnl # Check if TCP_KEEPIDLE is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_TCP_KEEPIDLE], [{
AC_CACHE_CHECK([whether TCP_KEEPIDLE is supported], [libzmq_cv_tcp_keepidle],
[AC_TRY_RUN([/* TCP_KEEPIDLE test */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
int main (int argc, char *argv [])
{
int s, rc, opt = 1;
return (
((s = socket (PF_INET, SOCK_STREAM, 0)) == -1) ||
((rc = setsockopt (s, SOL_SOCKET, SO_KEEPALIVE, (char*) &opt, sizeof (int))) == -1) ||
((rc = setsockopt (s, IPPROTO_TCP, TCP_KEEPIDLE, (char*) &opt, sizeof (int))) == -1)
);
}
],
[libzmq_cv_tcp_keepidle="yes"],
[libzmq_cv_tcp_keepidle="no"],
[libzmq_cv_tcp_keepidle="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_tcp_keepidle" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_TCP_KEEPINTVL([action-if-found], [action-if-not-found]) #
dnl # Check if TCP_KEEPINTVL is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_TCP_KEEPINTVL], [{
AC_CACHE_CHECK([whether TCP_KEEPINTVL is supported], [libzmq_cv_tcp_keepintvl],
[AC_TRY_RUN([/* TCP_KEEPINTVL test */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
int main (int argc, char *argv [])
{
int s, rc, opt = 1;
return (
((s = socket (PF_INET, SOCK_STREAM, 0)) == -1) ||
((rc = setsockopt (s, SOL_SOCKET, SO_KEEPALIVE, (char*) &opt, sizeof (int))) == -1) ||
((rc = setsockopt (s, IPPROTO_TCP, TCP_KEEPINTVL, (char*) &opt, sizeof (int))) == -1)
);
}
],
[libzmq_cv_tcp_keepintvl="yes"],
[libzmq_cv_tcp_keepintvl="no"],
[libzmq_cv_tcp_keepintvl="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_tcp_keepintvl" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_TCP_KEEPALIVE([action-if-found], [action-if-not-found]) #
dnl # Check if TCP_KEEPALIVE is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_TCP_KEEPALIVE], [{
AC_CACHE_CHECK([whether TCP_KEEPALIVE is supported], [libzmq_cv_tcp_keepalive],
[AC_TRY_RUN([/* TCP_KEEPALIVE test */
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
int main (int argc, char *argv [])
{
int s, rc, opt = 1;
return (
((s = socket (PF_INET, SOCK_STREAM, 0)) == -1) ||
((rc = setsockopt (s, SOL_SOCKET, SO_KEEPALIVE, (char*) &opt, sizeof (int))) == -1) ||
((rc = setsockopt (s, IPPROTO_TCP, TCP_KEEPALIVE, (char*) &opt, sizeof (int))) == -1)
);
}
],
[libzmq_cv_tcp_keepalive="yes"],
[libzmq_cv_tcp_keepalive="no"],
[libzmq_cv_tcp_keepalive="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_tcp_keepalive" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_GETRANDOM([action-if-found], [action-if-not-found]) #
dnl # Checks if getrandom is supported #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_GETRANDOM], [{
AC_CACHE_CHECK([whether getrandom is supported], [libzmq_cv_getrandom],
[AC_TRY_RUN([/* thread-local storage test */
#include <sys/random.h>
int main (int argc, char *argv [])
{
char buf[4];
int rc = getrandom(buf, 4, 0);
return rc == -1 ? 1 : 0;
}
],
[libzmq_cv_getrandom="yes"],
[libzmq_cv_getrandom="no"],
[libzmq_cv_getrandom="not during cross-compile"]
)]
)
AS_IF([test "x$libzmq_cv_getrandom" = "xyes"], [$1], [$2])
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER_KQUEUE([action-if-found], [action-if-not-found]) #
dnl # Checks kqueue polling system #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER_KQUEUE], [{
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
],[[
struct kevent t_kev;
kqueue();
]])],
[$1], [$2]
)
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER_EPOLL_RUN([action-if-found], [action-if-not-found]) #
dnl # LIBZMQ_CHECK_POLLER_EPOLL_CLOEXEC([action-if-found], [action-if-not-found]) #
dnl # Checks epoll polling system can actually run #
dnl # For cross-compile, only requires that epoll can link #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER_EPOLL], [{
AC_RUN_IFELSE([
AC_LANG_PROGRAM([
#include <sys/epoll.h>
],[[
struct epoll_event t_ev;
int r;
r = epoll_create(10);
return(r < 0);
]])],
[$1],[$2],[
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <sys/epoll.h>
],[[
struct epoll_event t_ev;
epoll_create(10);
]])],
[$1], [$2]
)
]
)
}])
AC_DEFUN([LIBZMQ_CHECK_POLLER_EPOLL_CLOEXEC], [{
AC_RUN_IFELSE([
AC_LANG_PROGRAM([
#include <sys/epoll.h>
],[[
struct epoll_event t_ev;
int r;
r = epoll_create1(EPOLL_CLOEXEC);
return(r < 0);
]])],
[$1],[$2],[
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <sys/epoll.h>
],[[
struct epoll_event t_ev;
epoll_create1(EPOLL_CLOEXEC);
]])],
[$1], [$2]
)
]
)
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER_DEVPOLL([action-if-found], [action-if-not-found]) #
dnl # Checks devpoll polling system #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER_DEVPOLL], [{
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <sys/devpoll.h>
],[[
struct pollfd t_devpoll;
int fd = open("/dev/poll", O_RDWR);
]])],
[$1], [$2]
)
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER_POLLSET([action-if-found], [action-if-not-found]) #
dnl # Checks pollset polling system #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER_POLLSET], [{
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <sys/poll.h>
#include <sys/pollset.h>
],[[
pollset_t ps = pollset_create(-1);
]])],
[$1], [$2]
)
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER_POLL([action-if-found], [action-if-not-found]) #
dnl # Checks poll polling system #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER_POLL], [{
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#include <poll.h>
],[[
struct pollfd t_poll;
poll(&t_poll, 1, 1);
]])],
[$1], [$2]
)
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER_SELECT([action-if-found], [action-if-not-found]) #
dnl # Checks select polling system #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER_SELECT], [{
AC_LINK_IFELSE([
AC_LANG_PROGRAM([
#ifdef ZMQ_HAVE_WINDOWS
#include "winsock2.h"
#elif defined ZMQ_HAVE_OPENVMS
#include <sys/types.h>
#include <sys/time.h>
#else
#include <sys/select.h>
#endif
],[[
fd_set t_rfds;
struct timeval tv;
FD_ZERO(&t_rfds);
FD_SET(0, &t_rfds);
tv.tv_sec = 5;
tv.tv_usec = 0;
select(1, &t_rfds, 0, 0, &tv);
]])],
[$1],[$2]
)
}])
dnl ################################################################################
dnl # LIBZMQ_CHECK_POLLER([action-if-found], [action-if-not-found]) #
dnl # Choose polling system #
dnl ################################################################################
AC_DEFUN([LIBZMQ_CHECK_POLLER], [{
# Allow user to override poller autodetection
AC_ARG_WITH([poller],
[AS_HELP_STRING([--with-poller],
[choose I/O thread polling system manually. Valid values are 'kqueue', 'epoll', 'devpoll', 'pollset', 'poll', 'select', 'wepoll', or 'auto'. [default=auto]])])
# Allow user to override poller autodetection
AC_ARG_WITH([api_poller],
[AS_HELP_STRING([--with-api-poller],
[choose zmq_poll(er)_* API polling system manually. Valid values are 'poll', 'select', or 'auto'. [default=auto]])])
if test "x$with_poller" == "x"; then
pollers=auto
else
pollers=$with_poller
fi
if test "$pollers" == "auto"; then
# We search for pollers in this order
pollers="kqueue epoll devpoll pollset poll select"
fi
# try to find suitable polling system. the order of testing is:
AC_MSG_NOTICE([Choosing I/O thread polling system from '$pollers'...])
poller_found=0
for poller in $pollers; do
case "$poller" in
kqueue)
LIBZMQ_CHECK_POLLER_KQUEUE([
AC_MSG_NOTICE([Using 'kqueue' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_KQUEUE, 1, [Use 'kqueue' I/O thread polling system])
poller_found=1
])
;;
epoll)
case "$host_os" in
solaris*|sunos*)
# Recent illumos and Solaris systems did add epoll()
# syntax, but it does not fully satisfy expectations
# that ZMQ has from Linux systems. Unless you undertake
# to fix the integration, do not disable this exception
# and use select() or poll() on Solarish OSes for now.
AC_MSG_NOTICE([NOT using 'epoll' I/O thread polling system on '$host_os']) ;;
*)
LIBZMQ_CHECK_POLLER_EPOLL_CLOEXEC([
AC_MSG_NOTICE([Using 'epoll' I/O thread polling system with CLOEXEC])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_EPOLL, 1, [Use 'epoll' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_EPOLL_CLOEXEC, 1, [Use 'epoll' I/O thread polling system with CLOEXEC])
poller_found=1
],[
LIBZMQ_CHECK_POLLER_EPOLL([
AC_MSG_NOTICE([Using 'epoll' I/O thread polling system with CLOEXEC])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_EPOLL, 1, [Use 'epoll' I/O thread polling system])
poller_found=1
])
])
;;
esac
;;
devpoll)
LIBZMQ_CHECK_POLLER_DEVPOLL([
AC_MSG_NOTICE([Using 'devpoll' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_DEVPOLL, 1, [Use 'devpoll' I/O thread polling system])
poller_found=1
])
;;
pollset)
LIBZMQ_CHECK_POLLER_POLLSET([
AC_MSG_NOTICE([Using 'pollset' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_POLLSET, 1, [Use 'pollset' I/O thread polling system])
poller_found=1
])
;;
poll)
LIBZMQ_CHECK_POLLER_POLL([
AC_MSG_NOTICE([Using 'poll' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_POLL, 1, [Use 'poll' I/O thread polling system])
poller_found=1
])
;;
select)
LIBZMQ_CHECK_POLLER_SELECT([
AC_MSG_NOTICE([Using 'select' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_SELECT, 1, [Use 'select' I/O thread polling system])
poller_found=1
])
;;
wepoll)
# wepoll can only be manually selected
AC_MSG_NOTICE([Using 'wepoll' I/O thread polling system])
AC_DEFINE(ZMQ_IOTHREAD_POLLER_USE_EPOLL, 1, [Use 'epoll' I/O thread polling system])
poller_found=1
;;
esac
test $poller_found -eq 1 && break
done
if test $poller_found -eq 0; then
AC_MSG_ERROR([None of '$pollers' are valid pollers on this platform])
fi
if test "x$with_api_poller" == "x"; then
with_api_poller=auto
fi
if test "x$with_api_poller" == "xauto"; then
if test $poller == "select"; then
api_poller=select
elif test $poller == "wepoll"; then
api_poller=select
else
api_poller=poll
fi
else
api_poller=$with_api_poller
fi
if test "$api_poller" == "select"; then
AC_MSG_NOTICE([Using 'select' zmq_poll(er)_* API polling system])
AC_DEFINE(ZMQ_POLL_BASED_ON_SELECT, 1, [Use 'select' zmq_poll(er)_* API polling system])
elif test "$api_poller" == "poll"; then
AC_MSG_NOTICE([Using 'poll' zmq_poll(er)_* API polling system])
AC_DEFINE(ZMQ_POLL_BASED_ON_POLL, 1, [Use 'poll' zmq_poll(er)_* API polling system])
else
AC_MSG_ERROR([Invalid API poller '$api_poller' specified])
fi
}])
dnl ##############################################################################
dnl # LIBZMQ_CHECK_CACHELINE #
dnl # Check cacheline size for alignment purposes #
dnl ##############################################################################
AC_DEFUN([LIBZMQ_CHECK_CACHELINE], [{
zmq_cacheline_size=64
AC_CHECK_TOOL(libzmq_getconf, getconf)
if ! test "x$libzmq_getconf" = "x"; then
zmq_cacheline_size=$($libzmq_getconf LEVEL1_DCACHE_LINESIZE 2>/dev/null || echo 64)
if test "x$zmq_cacheline_size" = "x0" -o "x$zmq_cacheline_size" = "x-1"; then
# getconf on some architectures does not know the size, try to fallback to
# the value the kernel knows on Linux
zmq_cacheline_size=$(cat /sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size 2>/dev/null || echo 64)
fi
fi
AC_MSG_NOTICE([Using "$zmq_cacheline_size" bytes alignment for lock-free data structures])
AC_DEFINE_UNQUOTED(ZMQ_CACHELINE_SIZE, $zmq_cacheline_size, [Using "$zmq_cacheline_size" bytes alignment for lock-free data structures])
}])
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