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# generated automatically by aclocal 1.16.1 -*- Autoconf -*-
# Copyright (C) 1996-2018 Free Software Foundation, Inc.
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
# with or without modifications, as long as this notice is preserved.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
# PARTICULAR PURPOSE.
m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
m4_ifndef([AC_AUTOCONF_VERSION],
[m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
[m4_warning([this file was generated for autoconf 2.69.
You have another version of autoconf. It may work, but is not guaranteed to.
If you have problems, you may need to regenerate the build system entirely.
To do so, use the procedure documented by the package, typically 'autoreconf'.])])
dnl pkg.m4 - Macros to locate and utilise pkg-config. -*- Autoconf -*-
dnl serial 11 (pkg-config-0.29.1)
dnl
dnl Copyright © 2004 Scott James Remnant <scott@netsplit.com>.
dnl Copyright © 2012-2015 Dan Nicholson <dbn.lists@gmail.com>
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
dnl 02111-1307, USA.
dnl
dnl As a special exception to the GNU General Public License, if you
dnl distribute this file as part of a program that contains a
dnl configuration script generated by Autoconf, you may include it under
dnl the same distribution terms that you use for the rest of that
dnl program.
dnl PKG_PREREQ(MIN-VERSION)
dnl -----------------------
dnl Since: 0.29
dnl
dnl Verify that the version of the pkg-config macros are at least
dnl MIN-VERSION. Unlike PKG_PROG_PKG_CONFIG, which checks the user's
dnl installed version of pkg-config, this checks the developer's version
dnl of pkg.m4 when generating configure.
dnl
dnl To ensure that this macro is defined, also add:
dnl m4_ifndef([PKG_PREREQ],
dnl [m4_fatal([must install pkg-config 0.29 or later before running autoconf/autogen])])
dnl
dnl See the "Since" comment for each macro you use to see what version
dnl of the macros you require.
m4_defun([PKG_PREREQ],
[m4_define([PKG_MACROS_VERSION], [0.29.1])
m4_if(m4_version_compare(PKG_MACROS_VERSION, [$1]), -1,
[m4_fatal([pkg.m4 version $1 or higher is required but ]PKG_MACROS_VERSION[ found])])
])dnl PKG_PREREQ
dnl PKG_PROG_PKG_CONFIG([MIN-VERSION])
dnl ----------------------------------
dnl Since: 0.16
dnl
dnl Search for the pkg-config tool and set the PKG_CONFIG variable to
dnl first found in the path. Checks that the version of pkg-config found
dnl is at least MIN-VERSION. If MIN-VERSION is not specified, 0.9.0 is
dnl used since that's the first version where most current features of
dnl pkg-config existed.
AC_DEFUN([PKG_PROG_PKG_CONFIG],
[m4_pattern_forbid([^_?PKG_[A-Z_]+$])
m4_pattern_allow([^PKG_CONFIG(_(PATH|LIBDIR|SYSROOT_DIR|ALLOW_SYSTEM_(CFLAGS|LIBS)))?$])
m4_pattern_allow([^PKG_CONFIG_(DISABLE_UNINSTALLED|TOP_BUILD_DIR|DEBUG_SPEW)$])
AC_ARG_VAR([PKG_CONFIG], [path to pkg-config utility])
AC_ARG_VAR([PKG_CONFIG_PATH], [directories to add to pkg-config's search path])
AC_ARG_VAR([PKG_CONFIG_LIBDIR], [path overriding pkg-config's built-in search path])
if test "x$ac_cv_env_PKG_CONFIG_set" != "xset"; then
AC_PATH_TOOL([PKG_CONFIG], [pkg-config])
fi
if test -n "$PKG_CONFIG"; then
_pkg_min_version=m4_default([$1], [0.9.0])
AC_MSG_CHECKING([pkg-config is at least version $_pkg_min_version])
if $PKG_CONFIG --atleast-pkgconfig-version $_pkg_min_version; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
PKG_CONFIG=""
fi
fi[]dnl
])dnl PKG_PROG_PKG_CONFIG
dnl PKG_CHECK_EXISTS(MODULES, [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------------------------------
dnl Since: 0.18
dnl
dnl Check to see whether a particular set of modules exists. Similar to
dnl PKG_CHECK_MODULES(), but does not set variables or print errors.
dnl
dnl Please remember that m4 expands AC_REQUIRE([PKG_PROG_PKG_CONFIG])
dnl only at the first occurence in configure.ac, so if the first place
dnl it's called might be skipped (such as if it is within an "if", you
dnl have to call PKG_CHECK_EXISTS manually
AC_DEFUN([PKG_CHECK_EXISTS],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
if test -n "$PKG_CONFIG" && \
AC_RUN_LOG([$PKG_CONFIG --exists --print-errors "$1"]); then
m4_default([$2], [:])
m4_ifvaln([$3], [else
$3])dnl
fi])
dnl _PKG_CONFIG([VARIABLE], [COMMAND], [MODULES])
dnl ---------------------------------------------
dnl Internal wrapper calling pkg-config via PKG_CONFIG and setting
dnl pkg_failed based on the result.
m4_define([_PKG_CONFIG],
[if test -n "$$1"; then
pkg_cv_[]$1="$$1"
elif test -n "$PKG_CONFIG"; then
PKG_CHECK_EXISTS([$3],
[pkg_cv_[]$1=`$PKG_CONFIG --[]$2 "$3" 2>/dev/null`
test "x$?" != "x0" && pkg_failed=yes ],
[pkg_failed=yes])
else
pkg_failed=untried
fi[]dnl
])dnl _PKG_CONFIG
dnl _PKG_SHORT_ERRORS_SUPPORTED
dnl ---------------------------
dnl Internal check to see if pkg-config supports short errors.
AC_DEFUN([_PKG_SHORT_ERRORS_SUPPORTED],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])
if $PKG_CONFIG --atleast-pkgconfig-version 0.20; then
_pkg_short_errors_supported=yes
else
_pkg_short_errors_supported=no
fi[]dnl
])dnl _PKG_SHORT_ERRORS_SUPPORTED
dnl PKG_CHECK_MODULES(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
dnl [ACTION-IF-NOT-FOUND])
dnl --------------------------------------------------------------
dnl Since: 0.4.0
dnl
dnl Note that if there is a possibility the first call to
dnl PKG_CHECK_MODULES might not happen, you should be sure to include an
dnl explicit call to PKG_PROG_PKG_CONFIG in your configure.ac
AC_DEFUN([PKG_CHECK_MODULES],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1][_CFLAGS], [C compiler flags for $1, overriding pkg-config])dnl
AC_ARG_VAR([$1][_LIBS], [linker flags for $1, overriding pkg-config])dnl
pkg_failed=no
AC_MSG_CHECKING([for $1])
_PKG_CONFIG([$1][_CFLAGS], [cflags], [$2])
_PKG_CONFIG([$1][_LIBS], [libs], [$2])
m4_define([_PKG_TEXT], [Alternatively, you may set the environment variables $1[]_CFLAGS
and $1[]_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.])
if test $pkg_failed = yes; then
AC_MSG_RESULT([no])
_PKG_SHORT_ERRORS_SUPPORTED
if test $_pkg_short_errors_supported = yes; then
$1[]_PKG_ERRORS=`$PKG_CONFIG --short-errors --print-errors --cflags --libs "$2" 2>&1`
else
$1[]_PKG_ERRORS=`$PKG_CONFIG --print-errors --cflags --libs "$2" 2>&1`
fi
# Put the nasty error message in config.log where it belongs
echo "$$1[]_PKG_ERRORS" >&AS_MESSAGE_LOG_FD
m4_default([$4], [AC_MSG_ERROR(
[Package requirements ($2) were not met:
$$1_PKG_ERRORS
Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.
_PKG_TEXT])[]dnl
])
elif test $pkg_failed = untried; then
AC_MSG_RESULT([no])
m4_default([$4], [AC_MSG_FAILURE(
[The pkg-config script could not be found or is too old. Make sure it
is in your PATH or set the PKG_CONFIG environment variable to the full
path to pkg-config.
_PKG_TEXT
To get pkg-config, see <http://pkg-config.freedesktop.org/>.])[]dnl
])
else
$1[]_CFLAGS=$pkg_cv_[]$1[]_CFLAGS
$1[]_LIBS=$pkg_cv_[]$1[]_LIBS
AC_MSG_RESULT([yes])
$3
fi[]dnl
])dnl PKG_CHECK_MODULES
dnl PKG_CHECK_MODULES_STATIC(VARIABLE-PREFIX, MODULES, [ACTION-IF-FOUND],
dnl [ACTION-IF-NOT-FOUND])
dnl ---------------------------------------------------------------------
dnl Since: 0.29
dnl
dnl Checks for existence of MODULES and gathers its build flags with
dnl static libraries enabled. Sets VARIABLE-PREFIX_CFLAGS from --cflags
dnl and VARIABLE-PREFIX_LIBS from --libs.
dnl
dnl Note that if there is a possibility the first call to
dnl PKG_CHECK_MODULES_STATIC might not happen, you should be sure to
dnl include an explicit call to PKG_PROG_PKG_CONFIG in your
dnl configure.ac.
AC_DEFUN([PKG_CHECK_MODULES_STATIC],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
_save_PKG_CONFIG=$PKG_CONFIG
PKG_CONFIG="$PKG_CONFIG --static"
PKG_CHECK_MODULES($@)
PKG_CONFIG=$_save_PKG_CONFIG[]dnl
])dnl PKG_CHECK_MODULES_STATIC
dnl PKG_INSTALLDIR([DIRECTORY])
dnl -------------------------
dnl Since: 0.27
dnl
dnl Substitutes the variable pkgconfigdir as the location where a module
dnl should install pkg-config .pc files. By default the directory is
dnl $libdir/pkgconfig, but the default can be changed by passing
dnl DIRECTORY. The user can override through the --with-pkgconfigdir
dnl parameter.
AC_DEFUN([PKG_INSTALLDIR],
[m4_pushdef([pkg_default], [m4_default([$1], ['${libdir}/pkgconfig'])])
m4_pushdef([pkg_description],
[pkg-config installation directory @<:@]pkg_default[@:>@])
AC_ARG_WITH([pkgconfigdir],
[AS_HELP_STRING([--with-pkgconfigdir], pkg_description)],,
[with_pkgconfigdir=]pkg_default)
AC_SUBST([pkgconfigdir], [$with_pkgconfigdir])
m4_popdef([pkg_default])
m4_popdef([pkg_description])
])dnl PKG_INSTALLDIR
dnl PKG_NOARCH_INSTALLDIR([DIRECTORY])
dnl --------------------------------
dnl Since: 0.27
dnl
dnl Substitutes the variable noarch_pkgconfigdir as the location where a
dnl module should install arch-independent pkg-config .pc files. By
dnl default the directory is $datadir/pkgconfig, but the default can be
dnl changed by passing DIRECTORY. The user can override through the
dnl --with-noarch-pkgconfigdir parameter.
AC_DEFUN([PKG_NOARCH_INSTALLDIR],
[m4_pushdef([pkg_default], [m4_default([$1], ['${datadir}/pkgconfig'])])
m4_pushdef([pkg_description],
[pkg-config arch-independent installation directory @<:@]pkg_default[@:>@])
AC_ARG_WITH([noarch-pkgconfigdir],
[AS_HELP_STRING([--with-noarch-pkgconfigdir], pkg_description)],,
[with_noarch_pkgconfigdir=]pkg_default)
AC_SUBST([noarch_pkgconfigdir], [$with_noarch_pkgconfigdir])
m4_popdef([pkg_default])
m4_popdef([pkg_description])
])dnl PKG_NOARCH_INSTALLDIR
dnl PKG_CHECK_VAR(VARIABLE, MODULE, CONFIG-VARIABLE,
dnl [ACTION-IF-FOUND], [ACTION-IF-NOT-FOUND])
dnl -------------------------------------------
dnl Since: 0.28
dnl
dnl Retrieves the value of the pkg-config variable for the given module.
AC_DEFUN([PKG_CHECK_VAR],
[AC_REQUIRE([PKG_PROG_PKG_CONFIG])dnl
AC_ARG_VAR([$1], [value of $3 for $2, overriding pkg-config])dnl
_PKG_CONFIG([$1], [variable="][$3]["], [$2])
AS_VAR_COPY([$1], [pkg_cv_][$1])
AS_VAR_IF([$1], [""], [$5], [$4])dnl
])dnl PKG_CHECK_VAR
# ===========================================================================
# https://www.gnu.org/software/autoconf-archive/ax_cxx_compile_stdcxx.html
# ===========================================================================
#
# SYNOPSIS
#
# MM_AX_CXX_COMPILE_STDCXX(VERSION, [ext|noext], [mandatory|optional])
#
# DESCRIPTION
#
# Check for baseline language coverage in the compiler for the specified
# version of the C++ standard. If necessary, add switches to CXX and
# CXXCPP to enable support. VERSION may be '11' (for the C++11 standard)
# or '14' (for the C++14 standard).
#
# The second argument, if specified, indicates whether you insist on an
# extended mode (e.g. -std=gnu++11) or a strict conformance mode (e.g.
# -std=c++11). If neither is specified, you get whatever works, with
# preference for an extended mode.
#
# The third argument, if specified 'mandatory' or if left unspecified,
# indicates that baseline support for the specified C++ standard is
# required and that the macro should error out if no mode with that
# support is found. If specified 'optional', then configuration proceeds
# regardless, after defining HAVE_CXX${VERSION} if and only if a
# supporting mode is found.
#
# LICENSE
#
# Copyright (c) 2008 Benjamin Kosnik <bkoz@redhat.com>
# Copyright (c) 2012 Zack Weinberg <zackw@panix.com>
# Copyright (c) 2013 Roy Stogner <roystgnr@ices.utexas.edu>
# Copyright (c) 2014, 2015 Google Inc.; contributed by Alexey Sokolov <sokolov@google.com>
# Copyright (c) 2015 Paul Norman <penorman@mac.com>
# Copyright (c) 2015 Moritz Klammler <moritz@klammler.eu>
# Copyright (c) 2016, 2018 Krzesimir Nowak <qdlacz@gmail.com>
# Copyright (c) 2019 Enji Cooper <yaneurabeya@gmail.com>
#
# Copying and distribution of this file, with or without modification, are
# permitted in any medium without royalty provided the copyright notice
# and this notice are preserved. This file is offered as-is, without any
# warranty.
# Copied from ax_cxx_compile_stdcxx.m4 and added MM_ prefix to avoid
# possible conflict with AX_CXX_COMPILE_STDCXX in other modules.
#serial 11
dnl This macro is based on the code from the AX_CXX_COMPILE_STDCXX_11 macro
dnl (serial version number 13).
AC_DEFUN([MM_AX_CXX_COMPILE_STDCXX], [dnl
m4_if([$1], [11], [ax_cxx_compile_alternatives="11 0x"],
[$1], [14], [ax_cxx_compile_alternatives="14 1y"],
[$1], [17], [ax_cxx_compile_alternatives="17 1z"],
[m4_fatal([invalid first argument `$1' to MM_AX_CXX_COMPILE_STDCXX])])dnl
m4_if([$2], [], [],
[$2], [ext], [],
[$2], [noext], [],
[m4_fatal([invalid second argument `$2' to MM_AX_CXX_COMPILE_STDCXX])])dnl
m4_if([$3], [], [ax_cxx_compile_cxx$1_required=true],
[$3], [mandatory], [ax_cxx_compile_cxx$1_required=true],
[$3], [optional], [ax_cxx_compile_cxx$1_required=false],
[m4_fatal([invalid third argument `$3' to MM_AX_CXX_COMPILE_STDCXX])])
AC_LANG_PUSH([C++])dnl
ac_success=no
m4_if([$2], [noext], [], [dnl
if test x$ac_success = xno; then
for alternative in ${ax_cxx_compile_alternatives}; do
switch="-std=gnu++${alternative}"
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
$cachevar,
[ac_save_CXX="$CXX"
CXX="$CXX $switch"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([_MM_AX_CXX_COMPILE_STDCXX_testbody_$1])],
[eval $cachevar=yes],
[eval $cachevar=no])
CXX="$ac_save_CXX"])
if eval test x\$$cachevar = xyes; then
CXX="$CXX $switch"
if test -n "$CXXCPP" ; then
CXXCPP="$CXXCPP $switch"
fi
ac_success=yes
break
fi
done
fi])
m4_if([$2], [ext], [], [dnl
if test x$ac_success = xno; then
dnl HP's aCC needs +std=c++11 according to:
dnl http://h21007.www2.hp.com/portal/download/files/unprot/aCxx/PDF_Release_Notes/769149-001.pdf
dnl Cray's crayCC needs "-h std=c++11"
for alternative in ${ax_cxx_compile_alternatives}; do
for switch in -std=c++${alternative} +std=c++${alternative} "-h std=c++${alternative}"; do
cachevar=AS_TR_SH([ax_cv_cxx_compile_cxx$1_$switch])
AC_CACHE_CHECK(whether $CXX supports C++$1 features with $switch,
$cachevar,
[ac_save_CXX="$CXX"
CXX="$CXX $switch"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([_MM_AX_CXX_COMPILE_STDCXX_testbody_$1])],
[eval $cachevar=yes],
[eval $cachevar=no])
CXX="$ac_save_CXX"])
if eval test x\$$cachevar = xyes; then
CXX="$CXX $switch"
if test -n "$CXXCPP" ; then
CXXCPP="$CXXCPP $switch"
fi
ac_success=yes
break
fi
done
if test x$ac_success = xyes; then
break
fi
done
fi])
AC_LANG_POP([C++])
if test x$ax_cxx_compile_cxx$1_required = xtrue; then
if test x$ac_success = xno; then
AC_MSG_ERROR([*** A compiler with support for C++$1 language features is required.])
fi
fi
if test x$ac_success = xno; then
HAVE_CXX$1=0
AC_MSG_NOTICE([No compiler with C++$1 support was found])
else
HAVE_CXX$1=1
AC_DEFINE(HAVE_CXX$1,1,
[define if the compiler supports basic C++$1 syntax])
fi
AC_SUBST(HAVE_CXX$1)
])
dnl Test body for checking C++11 support
m4_define([_MM_AX_CXX_COMPILE_STDCXX_testbody_11],
_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_11
)
dnl Test body for checking C++14 support
m4_define([_MM_AX_CXX_COMPILE_STDCXX_testbody_14],
_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_11
_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_14
)
m4_define([_MM_AX_CXX_COMPILE_STDCXX_testbody_17],
_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_11
_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_14
_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_17
)
dnl Tests for new features in C++11
m4_define([_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_11], [[
// If the compiler admits that it is not ready for C++11, why torture it?
// Hopefully, this will speed up the test.
#ifndef __cplusplus
#error "This is not a C++ compiler"
#elif __cplusplus < 201103L
#error "This is not a C++11 compiler"
#else
namespace cxx11
{
namespace test_static_assert
{
template <typename T>
struct check
{
static_assert(sizeof(int) <= sizeof(T), "not big enough");
};
}
namespace test_final_override
{
struct Base
{
virtual ~Base() {}
virtual void f() {}
};
struct Derived : public Base
{
virtual ~Derived() override {}
virtual void f() override {}
};
}
namespace test_double_right_angle_brackets
{
template < typename T >
struct check {};
typedef check<void> single_type;
typedef check<check<void>> double_type;
typedef check<check<check<void>>> triple_type;
typedef check<check<check<check<void>>>> quadruple_type;
}
namespace test_decltype
{
int
f()
{
int a = 1;
decltype(a) b = 2;
return a + b;
}
}
namespace test_type_deduction
{
template < typename T1, typename T2 >
struct is_same
{
static const bool value = false;
};
template < typename T >
struct is_same<T, T>
{
static const bool value = true;
};
template < typename T1, typename T2 >
auto
add(T1 a1, T2 a2) -> decltype(a1 + a2)
{
return a1 + a2;
}
int
test(const int c, volatile int v)
{
static_assert(is_same<int, decltype(0)>::value == true, "");
static_assert(is_same<int, decltype(c)>::value == false, "");
static_assert(is_same<int, decltype(v)>::value == false, "");
auto ac = c;
auto av = v;
auto sumi = ac + av + 'x';
auto sumf = ac + av + 1.0;
static_assert(is_same<int, decltype(ac)>::value == true, "");
static_assert(is_same<int, decltype(av)>::value == true, "");
static_assert(is_same<int, decltype(sumi)>::value == true, "");
static_assert(is_same<int, decltype(sumf)>::value == false, "");
static_assert(is_same<int, decltype(add(c, v))>::value == true, "");
return (sumf > 0.0) ? sumi : add(c, v);
}
}
namespace test_noexcept
{
int f() { return 0; }
int g() noexcept { return 0; }
static_assert(noexcept(f()) == false, "");
static_assert(noexcept(g()) == true, "");
}
namespace test_constexpr
{
template < typename CharT >
unsigned long constexpr
strlen_c_r(const CharT *const s, const unsigned long acc) noexcept
{
return *s ? strlen_c_r(s + 1, acc + 1) : acc;
}
template < typename CharT >
unsigned long constexpr
strlen_c(const CharT *const s) noexcept
{
return strlen_c_r(s, 0UL);
}
static_assert(strlen_c("") == 0UL, "");
static_assert(strlen_c("1") == 1UL, "");
static_assert(strlen_c("example") == 7UL, "");
static_assert(strlen_c("another\0example") == 7UL, "");
}
namespace test_rvalue_references
{
template < int N >
struct answer
{
static constexpr int value = N;
};
answer<1> f(int&) { return answer<1>(); }
answer<2> f(const int&) { return answer<2>(); }
answer<3> f(int&&) { return answer<3>(); }
void
test()
{
int i = 0;
const int c = 0;
static_assert(decltype(f(i))::value == 1, "");
static_assert(decltype(f(c))::value == 2, "");
static_assert(decltype(f(0))::value == 3, "");
}
}
namespace test_uniform_initialization
{
struct test
{
static const int zero {};
static const int one {1};
};
static_assert(test::zero == 0, "");
static_assert(test::one == 1, "");
}
namespace test_lambdas
{
void
test1()
{
auto lambda1 = [](){};
auto lambda2 = lambda1;
lambda1();
lambda2();
}
int
test2()
{
auto a = [](int i, int j){ return i + j; }(1, 2);
auto b = []() -> int { return '0'; }();
auto c = [=](){ return a + b; }();
auto d = [&](){ return c; }();
auto e = [a, &b](int x) mutable {
const auto identity = [](int y){ return y; };
for (auto i = 0; i < a; ++i)
a += b--;
return x + identity(a + b);
}(0);
return a + b + c + d + e;
}
int
test3()
{
const auto nullary = [](){ return 0; };
const auto unary = [](int x){ return x; };
using nullary_t = decltype(nullary);
using unary_t = decltype(unary);
const auto higher1st = [](nullary_t f){ return f(); };
const auto higher2nd = [unary](nullary_t f1){
return [unary, f1](unary_t f2){ return f2(unary(f1())); };
};
return higher1st(nullary) + higher2nd(nullary)(unary);
}
}
namespace test_variadic_templates
{
template <int...>
struct sum;
template <int N0, int... N1toN>
struct sum<N0, N1toN...>
{
static constexpr auto value = N0 + sum<N1toN...>::value;
};
template <>
struct sum<>
{
static constexpr auto value = 0;
};
static_assert(sum<>::value == 0, "");
static_assert(sum<1>::value == 1, "");
static_assert(sum<23>::value == 23, "");
static_assert(sum<1, 2>::value == 3, "");
static_assert(sum<5, 5, 11>::value == 21, "");
static_assert(sum<2, 3, 5, 7, 11, 13>::value == 41, "");
}
// http://stackoverflow.com/questions/13728184/template-aliases-and-sfinae
// Clang 3.1 fails with headers of libstd++ 4.8.3 when using std::function
// because of this.
namespace test_template_alias_sfinae
{
struct foo {};
template<typename T>
using member = typename T::member_type;
template<typename T>
void func(...) {}
template<typename T>
void func(member<T>*) {}
void test();
void test() { func<foo>(0); }
}
} // namespace cxx11
#endif // __cplusplus >= 201103L
]])
dnl Tests for new features in C++14
m4_define([_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_14], [[
// If the compiler admits that it is not ready for C++14, why torture it?
// Hopefully, this will speed up the test.
#ifndef __cplusplus
#error "This is not a C++ compiler"
#elif __cplusplus < 201402L
#error "This is not a C++14 compiler"
#else
namespace cxx14
{
namespace test_polymorphic_lambdas
{
int
test()
{
const auto lambda = [](auto&&... args){
const auto istiny = [](auto x){
return (sizeof(x) == 1UL) ? 1 : 0;
};
const int aretiny[] = { istiny(args)... };
return aretiny[0];
};
return lambda(1, 1L, 1.0f, '1');
}
}
namespace test_binary_literals
{
constexpr auto ivii = 0b0000000000101010;
static_assert(ivii == 42, "wrong value");
}
namespace test_generalized_constexpr
{
template < typename CharT >
constexpr unsigned long
strlen_c(const CharT *const s) noexcept
{
auto length = 0UL;
for (auto p = s; *p; ++p)
++length;
return length;
}
static_assert(strlen_c("") == 0UL, "");
static_assert(strlen_c("x") == 1UL, "");
static_assert(strlen_c("test") == 4UL, "");
static_assert(strlen_c("another\0test") == 7UL, "");
}
namespace test_lambda_init_capture
{
int
test()
{
auto x = 0;
const auto lambda1 = [a = x](int b){ return a + b; };
const auto lambda2 = [a = lambda1(x)](){ return a; };
return lambda2();
}
}
namespace test_digit_separators
{
constexpr auto ten_million = 100'000'000;
static_assert(ten_million == 100000000, "");
}
namespace test_return_type_deduction
{
auto f(int& x) { return x; }
decltype(auto) g(int& x) { return x; }
template < typename T1, typename T2 >
struct is_same
{
static constexpr auto value = false;
};
template < typename T >
struct is_same<T, T>
{
static constexpr auto value = true;
};
int
test()
{
auto x = 0;
static_assert(is_same<int, decltype(f(x))>::value, "");
static_assert(is_same<int&, decltype(g(x))>::value, "");
return x;
}
}
} // namespace cxx14
#endif // __cplusplus >= 201402L
]])
dnl Tests for new features in C++17
m4_define([_MM_AX_CXX_COMPILE_STDCXX_testbody_new_in_17], [[
// If the compiler admits that it is not ready for C++17, why torture it?
// Hopefully, this will speed up the test.
#ifndef __cplusplus
#error "This is not a C++ compiler"
#elif __cplusplus < 201703L
#error "This is not a C++17 compiler"
#else
#include <initializer_list>
#include <utility>
#include <type_traits>
namespace cxx17
{
namespace test_constexpr_lambdas
{
constexpr int foo = [](){return 42;}();
}
namespace test::nested_namespace::definitions
{
}
namespace test_fold_expression
{
template<typename... Args>
int multiply(Args... args)
{
return (args * ... * 1);
}
template<typename... Args>
bool all(Args... args)
{
return (args && ...);
}
}
namespace test_extended_static_assert
{
static_assert (true);
}
namespace test_auto_brace_init_list
{
auto foo = {5};
auto bar {5};
static_assert(std::is_same<std::initializer_list<int>, decltype(foo)>::value);
static_assert(std::is_same<int, decltype(bar)>::value);
}
namespace test_typename_in_template_template_parameter
{
template<template<typename> typename X> struct D;
}
namespace test_fallthrough_nodiscard_maybe_unused_attributes
{
int f1()
{
return 42;
}
[[nodiscard]] int f2()
{
[[maybe_unused]] auto unused = f1();
switch (f1())
{
case 17:
f1();
[[fallthrough]];
case 42:
f1();
}
return f1();
}
}
namespace test_extended_aggregate_initialization
{
struct base1
{
int b1, b2 = 42;
};
struct base2
{
base2() {
b3 = 42;
}
int b3;
};
struct derived : base1, base2
{
int d;
};
derived d1 {{1, 2}, {}, 4}; // full initialization
derived d2 {{}, {}, 4}; // value-initialized bases
}
namespace test_general_range_based_for_loop
{
struct iter
{
int i;
int& operator* ()
{
return i;
}
const int& operator* () const
{
return i;
}
iter& operator++()
{
++i;
return *this;
}
};
struct sentinel
{
int i;
};
bool operator== (const iter& i, const sentinel& s)
{
return i.i == s.i;
}
bool operator!= (const iter& i, const sentinel& s)
{
return !(i == s);
}
struct range
{
iter begin() const
{
return {0};
}
sentinel end() const
{
return {5};
}
};
void f()
{
range r {};
for (auto i : r)
{
[[maybe_unused]] auto v = i;
}
}
}
namespace test_lambda_capture_asterisk_this_by_value
{
struct t
{
int i;
int foo()
{
return [*this]()
{
return i;
}();
}
};
}
namespace test_enum_class_construction
{
enum class byte : unsigned char
{};
byte foo {42};
}
namespace test_constexpr_if
{
template <bool cond>
int f ()
{
if constexpr(cond)
{
return 13;
}
else
{
return 42;
}
}
}
namespace test_selection_statement_with_initializer
{
int f()
{
return 13;
}
int f2()
{
if (auto i = f(); i > 0)
{
return 3;
}
switch (auto i = f(); i + 4)
{
case 17:
return 2;
default:
return 1;
}
}
}
namespace test_template_argument_deduction_for_class_templates
{
template <typename T1, typename T2>
struct pair
{
pair (T1 p1, T2 p2)
: m1 {p1},
m2 {p2}
{}
T1 m1;
T2 m2;
};
void f()
{
[[maybe_unused]] auto p = pair{13, 42u};
}
}
namespace test_non_type_auto_template_parameters
{
template <auto n>
struct B
{};
B<5> b1;
B<'a'> b2;
}
namespace test_structured_bindings
{
int arr[2] = { 1, 2 };
std::pair<int, int> pr = { 1, 2 };
auto f1() -> int(&)[2]
{
return arr;
}
auto f2() -> std::pair<int, int>&
{
return pr;
}
struct S
{
int x1 : 2;
volatile double y1;
};
S f3()
{
return {};
}
auto [ x1, y1 ] = f1();
auto& [ xr1, yr1 ] = f1();
auto [ x2, y2 ] = f2();
auto& [ xr2, yr2 ] = f2();
const auto [ x3, y3 ] = f3();
}
namespace test_exception_spec_type_system
{
struct Good {};
struct Bad {};
void g1() noexcept;
void g2();
template<typename T>
Bad
f(T*, T*);
template<typename T1, typename T2>
Good
f(T1*, T2*);
static_assert (std::is_same_v<Good, decltype(f(g1, g2))>);
}
namespace test_inline_variables
{
template<class T> void f(T)
{}
template<class T> inline T g(T)
{
return T{};
}
template<> inline void f<>(int)
{}
template<> int g<>(int)
{
return 5;
}
}
} // namespace cxx17
#endif // __cplusplus < 201703L
]])
#serial 20090814
AC_DEFUN([_MM_PRE_INIT], [m4_pattern_forbid([^_?MM_])])
m4_define([_MM_PREREQ],
[dnl
m4_if(m4_quote(m4_version_compare([$2], [$3])), [-1],
[m4_fatal([$4 requires $1 $3 (version $2 is installed)])])[]dnl
])
AC_DEFUN([MM_PREREQ],
[dnl
m4_assert([$# >= 1])[]dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
_MM_PREREQ([mm-common], [1.0.0], [$1], m4_defn([AC_PACKAGE_NAME]))[]dnl
])
#serial 20091224
m4_define([_MM_PROG_GCC_VISIBILITY_CHECK],
[dnl
AC_PROVIDE([$0])[]dnl
AC_CACHE_CHECK([for GCC symbol visibility options],
[mm_cv_gcc_visibility_cxxflags],
[dnl
mm_save_CXXFLAGS=$CXXFLAGS
CXXFLAGS="$CXXFLAGS -fvisibility=hidden -fvisibility-inlines-hidden"
dnl
AC_LINK_IFELSE([AC_LANG_PROGRAM([[
#pragma GCC visibility push(default)
namespace Mm { void __attribute__((__visibility__("hidden"))) mmfunc(); }
void Mm::mmfunc() {}
#pragma GCC visibility pop
]], [[Mm::mmfunc();]])],
[mm_cv_gcc_visibility_cxxflags='-fvisibility=hidden -fvisibility-inlines-hidden'],
[mm_cv_gcc_visibility_cxxflags=none])
dnl
CXXFLAGS=$mm_save_CXXFLAGS])[]dnl
])
AC_DEFUN([MM_PROG_GCC_VISIBILITY],
[dnl
m4_assert([$# >= 1])[]dnl
AC_LANG_ASSERT([C++])[]dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([_MM_PROG_GCC_VISIBILITY_CHECK])[]dnl
AS_IF([test "x$mm_cv_gcc_visibility_cxxflags" != xnone],
[$1=$mm_cv_gcc_visibility_cxxflags], [$1=])
AC_SUBST([$1])[]dnl
])
m4_define([_MM_ARG_DISABLE_DEPRECATED_API_OPTION],
[dnl
AC_PROVIDE([$0])[]dnl
AC_ARG_ENABLE([deprecated-api],
[AS_HELP_STRING([--disable-deprecated-api],
[omit deprecated API from the library])],
[mm_enable_deprecated_api=$enableval],
[mm_enable_deprecated_api=yes])[]dnl
AS_IF([test "x$mm_enable_deprecated_api" = xno],
[AC_MSG_WARN([[Deprecated API will not be built, breaking compatibility.
Do not use this option for distribution packages.]])],
[AC_MSG_NOTICE([[Deprecated API will be built, for backwards-compatibility.]])])
AM_CONDITIONAL([DISABLE_DEPRECATED_API], [test "x$mm_enable_deprecated_api" = xno])[]dnl
])
m4_define([_MM_ARG_DISABLE_DEPRECATED_API_DEFINE],
[m4_foreach_w([mm_prefix], [$1],
[AC_DEFINE(m4_defn([mm_prefix])[_DISABLE_DEPRECATED], [1],
[Define to omit deprecated API from the library.])
])])
AC_DEFUN([MM_ARG_DISABLE_DEPRECATED_API],
[dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([_MM_ARG_DISABLE_DEPRECATED_API_OPTION])[]dnl
AS_IF([test "x$mm_enable_deprecated_api" = xno],
[_MM_ARG_DISABLE_DEPRECATED_API_DEFINE(
m4_ifval([$1], [[$1]], [AS_TR_CPP(m4_defn([AC_PACKAGE_TARNAME]))]))])[]dnl
])
#serial 20110327
m4_define([_MM_CONFIG_DOCTOOL_DIR],
[dnl
AC_PROVIDE([$0])[]dnl
AC_REQUIRE([PKG_PROG_PKG_CONFIG])[]dnl
dnl
AC_MSG_CHECKING([location of documentation utilities])
AS_IF([test "x$MMDOCTOOLDIR" = x],
[
MMDOCTOOLDIR=`$PKG_CONFIG --variable=doctooldir mm-common-util 2>&AS_MESSAGE_LOG_FD`
AS_IF([test "[$]?" -ne 0],
[AC_MSG_ERROR([[not found
The required module mm-common-util could not be found on this system. If you
are running a binary distribution and the mm-common package is installed,
make sure that any separate development package for mm-common is installed
as well. If you built mm-common yourself, it may be necessary to adjust
the PKG_CONFIG_PATH environment variable for pkg-config to find it.
]])])
])
AC_MSG_RESULT([$MMDOCTOOLDIR])[]dnl
])
AC_DEFUN([MM_CONFIG_DOCTOOL_DIR],
[dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([MM_CHECK_GNU_MAKE])[]dnl
m4_ifval([$1], [MMDOCTOOLDIR='[$]{top_srcdir}/$1'], [AC_REQUIRE([_MM_CONFIG_DOCTOOL_DIR])])
AM_CONDITIONAL([DIST_DOCTOOLS], [test 'x$1' != 'x'])dnl
AC_SUBST([MMDOCTOOLDIR])[]dnl
])
m4_define([_MM_ARG_ENABLE_DOCUMENTATION],
[dnl
AC_PROVIDE([$0])[]dnl
dnl
AC_ARG_VAR([DOT], [path to dot utility])[]dnl
AC_ARG_VAR([DOXYGEN], [path to Doxygen utility])[]dnl
AC_ARG_VAR([XSLTPROC], [path to xsltproc utility])[]dnl
dnl
AC_PATH_PROG([DOT], [dot], [dot])
AC_PATH_PROG([DOXYGEN], [doxygen], [doxygen])
AC_PATH_PROG([XSLTPROC], [xsltproc], [xsltproc])
dnl
AC_ARG_ENABLE([documentation],
[AS_HELP_STRING([--disable-documentation],
[do not build or install the documentation])],
[ENABLE_DOCUMENTATION=$enableval],
[ENABLE_DOCUMENTATION=auto])
AS_IF([test "x$ENABLE_DOCUMENTATION" != xno],
[
mm_err=
AS_IF([test "x$MMDOCTOOLDIR" = x], [mm_err='dnl
The mm-common-util module is available, but the installation of mm-common on this
machine is missing the shared documentation utilities of the GNOME C++
bindings. It may be necessary to upgrade to a more recent release of
mm-common in order to build '$PACKAGE_NAME' and install the documentation.'],
[test "x$PERL" = xperl], [mm_err='Perl is required for installing the documentation.'],
[test "x$USE_MAINTAINER_MODE" != xno],
[
test "x$DOT" != xdot || mm_err=' dot'
test "x$DOXYGEN" != xdoxygen || mm_err="$mm_err doxygen"
test "x$XSLTPROC" != xxsltproc || mm_err="$mm_err xsltproc"
test -z "$mm_err" || mm_err='The documentation cannot be generated because
not all of the required tools are available:'$mm_err
])
AS_IF([test -z "$mm_err"], [ENABLE_DOCUMENTATION=yes],
[test "x$ENABLE_DOCUMENTATION" = xyes], [AC_MSG_FAILURE([[$mm_err]])],
[ENABLE_DOCUMENTATION=no; AC_MSG_WARN([[$mm_err]])])
])
AM_CONDITIONAL([ENABLE_DOCUMENTATION], [test "x$ENABLE_DOCUMENTATION" = xyes])
AC_SUBST([DOXYGEN_TAGFILES], [[]])
AC_SUBST([DOCINSTALL_FLAGS], [[]])[]dnl
])
AC_DEFUN([MM_ARG_ENABLE_DOCUMENTATION],
[dnl
AC_BEFORE([$0], [MM_ARG_WITH_TAGFILE_DOC])[]dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([MM_CONFIG_DOCTOOL_DIR])[]dnl
AC_REQUIRE([MM_PATH_PERL])[]dnl
AC_REQUIRE([_MM_ARG_ENABLE_DOCUMENTATION])[]dnl
])
m4_define([_MM_TR_URI],
[dnl
[`expr "X$1" : 'X\(.*[^\\/]\)[\\/]*' 2>&]AS_MESSAGE_LOG_FD[ |]dnl
[ sed 's|[\\]|/|g;s| |%20|g;s|^/|file:///|;s|^.:/|file:///&|' 2>&]AS_MESSAGE_LOG_FD[`]dnl
])
m4_define([_MM_ARG_WITH_TAGFILE_DOC],
[dnl
AC_MSG_CHECKING([for $1 documentation])
AC_ARG_WITH([$1-doc],
[AS_HELP_STRING([[--with-$1-doc=[TAGFILE@]HTMLREFDIR]],
[Link to external $1 documentation]m4_ifval([$4], [[ [auto]]]))],
[
mm_htmlrefdir=`[expr "X@$withval" : '.*@\(.*\)' 2>&]AS_MESSAGE_LOG_FD`
mm_tagname=`[expr "X/$withval" : '[^@]*[\\/]\([^\\/@]*\)@' 2>&]AS_MESSAGE_LOG_FD`
mm_tagpath=`[expr "X$withval" : 'X\([^@]*\)@' 2>&]AS_MESSAGE_LOG_FD`
test "x$mm_tagname" != x || mm_tagname="$3"
test "x$mm_tagpath" != x || mm_tagpath=$mm_tagname[]dnl
], [
mm_htmlrefdir=
mm_tagname="$3"
mm_tagpath=$mm_tagname[]dnl
])
# Prepend working direcory if the tag file path starts with ./ or ../
AS_CASE([$mm_tagpath], [[.[\\/]*|..[\\/]*]], [mm_tagpath=`pwd`/$mm_tagpath])
m4_ifval([$4], [dnl
# If no local directory was specified, get the default from the .pc file
AS_IF([test "x$mm_htmlrefdir" = x],
[
mm_htmlrefdir=`$PKG_CONFIG --variable=htmlrefdir "$4" 2>&AS_MESSAGE_LOG_FD`dnl
])
# If the user specified a Web URL, allow it to override the public location
AS_CASE([$mm_htmlrefdir], [[http://*|https://*]], [mm_htmlrefpub=$mm_htmlrefdir],
[
mm_htmlrefpub=`$PKG_CONFIG --variable=htmlrefpub "$4" 2>&AS_MESSAGE_LOG_FD`
test "x$mm_htmlrefpub" != x || mm_htmlrefpub=$mm_htmlrefdir
test "x$mm_htmlrefdir" != x || mm_htmlrefdir=$mm_htmlrefpub
])
# The user-supplied tag-file name takes precedence if it includes the path
AS_CASE([$mm_tagpath], [[*[\\/]*]],,
[
mm_doxytagfile=`$PKG_CONFIG --variable=doxytagfile "$4" 2>&AS_MESSAGE_LOG_FD`
test "x$mm_doxytagfile" = x || mm_tagpath=$mm_doxytagfile
])
# Remove trailing slashes and translate to URI
mm_htmlrefpub=_MM_TR_URI([$mm_htmlrefpub])
])[]dnl
mm_htmlrefdir=_MM_TR_URI([$mm_htmlrefdir])
AC_MSG_RESULT([$mm_tagpath@$mm_htmlrefdir])
AS_IF([test "x$USE_MAINTAINER_MODE" != xno && test ! -f "$mm_tagpath"],
[AC_MSG_WARN([Doxygen tag file $3 not found])])
AS_IF([test "x$mm_htmlrefdir" = x],
[AC_MSG_WARN([Location of external $1 documentation not set])],
[AS_IF([test "x$DOCINSTALL_FLAGS" = x],
[DOCINSTALL_FLAGS="-l '$mm_tagname@$mm_htmlrefdir/'"],
[DOCINSTALL_FLAGS="$DOCINSTALL_FLAGS -l '$mm_tagname@$mm_htmlrefdir/'"])])
AS_IF([test "x$mm_$2" = x], [mm_val=$mm_tagpath], [mm_val="$mm_tagpath=$mm_$2"])
AS_IF([test "x$DOXYGEN_TAGFILES" = x],
[DOXYGEN_TAGFILES=[\]"$mm_val[\]"],
[DOXYGEN_TAGFILES="$DOXYGEN_TAGFILES "[\]"$mm_val[\]"])[]dnl
])
AC_DEFUN([MM_ARG_WITH_TAGFILE_DOC],
[dnl
m4_assert([$# >= 1])[]dnl
m4_ifval([$2], [AC_REQUIRE([PKG_PROG_PKG_CONFIG])])[]dnl
AC_REQUIRE([MM_CONFIG_DOCTOOL_DIR])[]dnl
AC_REQUIRE([_MM_ARG_ENABLE_DOCUMENTATION])[]dnl
dnl
AS_IF([test "x$ENABLE_DOCUMENTATION" != xno],
[_MM_ARG_WITH_TAGFILE_DOC(m4_quote(m4_bpatsubst([$1], [[+]*\([-+][0123456789]\|[._]\).*$])),
[htmlref]m4_ifval([$2], [[pub]], [[dir]]), [$1], [$2])])[]dnl
])
#serial 20091228
m4_define([_MM_INIT_MODULE_VERSION],
[dnl
m4_ifval([$3],
[AC_SUBST([$2][_MAJOR_VERSION], [$3])
AC_DEFINE([$2][_MAJOR_VERSION], [$3], [Major version number of $1.])
])[]dnl
m4_ifval([$4],
[AC_SUBST([$2][_MINOR_VERSION], [$4])
AC_DEFINE([$2][_MINOR_VERSION], [$4], [Minor version number of $1.])
])[]dnl
m4_ifval([$5],
[AC_SUBST([$2][_MICRO_VERSION], [$5])
AC_DEFINE([$2][_MICRO_VERSION], [$5], [Micro version number of $1.])
])[]dnl
])
m4_define([_MM_INIT_MODULE_SUBST],
[dnl
AC_SUBST([$5][_MODULE_NAME], ['$1'])
AC_SUBST([$5][_VERSION], ['$2'])
m4_ifval([$4],
[AC_SUBST([$5][_API_VERSION], ['$4'])
])[]dnl
_MM_INIT_MODULE_VERSION([$3], [$5], m4_bpatsubst([$2], [[^0123456789]+], [,]))[]dnl
])
m4_define([_MM_INIT_MODULE_BASENAME],
[_MM_INIT_MODULE_SUBST([$1], [$2], [$3], [$4],
m4_quote(AS_TR_CPP(m4_quote(m4_translit([$3], [+], [X])))))])
AC_DEFUN([MM_INIT_MODULE],
[dnl
m4_assert([$# >= 1])[]dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([MM_CHECK_GNU_MAKE])[]dnl
_MM_INIT_MODULE_BASENAME([$1],
m4_quote(m4_ifval([$2], [$2], m4_defn([AC_PACKAGE_VERSION]))),
m4_quote(m4_bpatsubst([$1], [[-.0123456789]+$])),
m4_quote(m4_bregexp([$1], [-?\([.0123456789]+\)$], [\1])))[]dnl
])
#serial 20090822
m4_define([_MM_CHECK_GNU_MAKE],
[dnl
AC_PROVIDE([$0])[]dnl
AC_MSG_CHECKING([whether [$]{MAKE-make} supports GNU make features])
cat >conftest.make <<'_MMEOF'
override reverse = [$](2)[$](subst ,, )[$](1)
override result := [$](word 2,[$](call reverse,success,failure))
all: ; test '[$](result)' = success
.PHONY: all
_MMEOF
AS_IF([[$]{MAKE-make} -f conftest.make >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD],
[mm_gnu_make=yes], [mm_gnu_make=no])
rm -f conftest.make
AC_MSG_RESULT([$mm_gnu_make])
AS_IF([test "x$mm_gnu_make" != xyes],
[AC_MSG_FAILURE([[The GNU make program is required to build $PACKAGE_NAME.]])])[]dnl
])
AC_DEFUN([MM_CHECK_GNU_MAKE],
[dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([_MM_CHECK_GNU_MAKE])[]dnl
])
m4_define([_MM_PATH_PERL],
[dnl
AC_PROVIDE([$0])[]dnl
AC_ARG_VAR([PERL], [path to Perl interpreter])[]dnl
AC_PATH_PROG([PERL], [perl], [perl])[]dnl
])
AC_DEFUN([MM_PATH_PERL],
[dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([_MM_PATH_PERL])[]dnl
])
m4_define([_MM_CHECK_PERL],
[dnl
AS_IF([$PERL -e "require v$1; exit 0;" >&AS_MESSAGE_LOG_FD 2>&AS_MESSAGE_LOG_FD],
[$2], m4_ifval([$2$3], [[$3]],
[[AC_MSG_FAILURE([[At least Perl ]$1[ is required to build $PACKAGE_NAME.]])]]))[]dnl
])
AC_DEFUN([MM_CHECK_PERL],
[dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([_MM_PATH_PERL])[]dnl
_MM_CHECK_PERL(m4_ifval([$1], [[$1]], [[5.6.0]]), [$2], [$3])[]dnl
])
AC_DEFUN([MM_PKG_CONFIG_SUBST],
[dnl
m4_assert([$# >= 2])[]dnl
AC_REQUIRE([_MM_PRE_INIT])[]dnl
AC_REQUIRE([PKG_PROG_PKG_CONFIG])[]dnl
AC_MSG_CHECKING([for $1])
dnl
AS_IF([test -z "[$]{$1+set}"],
[$1=`$PKG_CONFIG $2 2>&AS_MESSAGE_LOG_FD`
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m4_include([build/ax_boost_base.m4])
m4_include([build/ax_boost_system.m4])
m4_include([build/ax_boost_timer.m4])
m4_include([build/cxx.m4])
m4_include([build/cxx_std.m4])
m4_include([build/libtool.m4])
m4_include([build/ltoptions.m4])
m4_include([build/ltsugar.m4])
m4_include([build/ltversion.m4])
m4_include([build/lt~obsolete.m4])
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