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acinclude.m4
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acinclude.m4
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#**************************************************************
# Copyright (c) 2010-2013, Dynamic Network Services, Inc.
# Jake Montgomery (jmontgomery@dyn.com) & Tom Daly (tom@dyn.com)
# Distributed under the FreeBSD License - see LICENSE
#**************************************************************
# Checks c++ compiler flags
# $1 - the flag that will be checked, without the -.
# $2 - to execute if yes
# $3 - to execute if no
AC_DEFUN(
[ACD_CHECK_CPP_FLAG],
[
cachename=`echo $1 | sed 'yX,/=+-;{}.X___p_____X'`
AC_CACHE_CHECK(
does $CXX support -$1,
dyn_cv_prog_cpp_flag_$cachename,
[
AC_LANG_PUSH(C++)
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -$1"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([],[])],
eval "dyn_cv_prog_cpp_flag_$cachename=yes",
eval "dyn_cv_prog_cpp_flag_$cachename=no",
)
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_POP(C++)
]
)
if eval "test \"`echo '$dyn_cv_prog_cpp_flag_'$cachename`\" = yes"; then
:
$2
else
:
$3
fi
]
)
# AHX_CONFIG_UNORDERED_MAP
# Sets up for use of the c++0x unordered_map class.
# may use tr1/unordered_map if that is not available.
# Older compilers have this as ext/hash_map in the
# __gnu_cxx::hash_map namespace
# New compilers may need -std=c++0x
# Does all required setup.
AC_DEFUN(
[AHX_CONFIG_UNORDERED_MAP],
[
AC_LANG_PUSH(C++)
AC_REQUIRE_CPP()
AC_SUBST(HAS_UNORDERED_MAP)
AC_SUBST(HAS_STD_UNORDERED_MAP)
AC_SUBST(HAS_EXT_HASH_MAP)
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -Werror"
dyn_has_unordered_map=no
if test $dyn_has_unordered_map = no; then
AC_MSG_CHECKING(whether the unordered_map class is available by default)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <unordered_map>],
[[
std::unordered_map<int, int> map;
map[10]=0;
]]
)],
dyn_has_unordered_map=yes
)
if test $dyn_has_unordered_map = yes; then
AC_DEFINE(HAS_STD_UNORDERED_MAP, 1, [Whether std::unordered_map is available])
fi
AC_MSG_RESULT($dyn_has_unordered_map)
fi
if test "$dyn_has_unordered_map" = "no" -a "$cpp11_enabled" != "no"; then
AC_MSG_CHECKING(whether the unordered_map class is available with c++0x)
ac_save2_CXXFLAGS=$CXXFLAGS
CXXFLAGS="$CXXFLAGS -std=c++0x"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <unordered_map>],
[[
std::unordered_map<int, int> map;
map[10]=0;
]]
)],
dyn_has_unordered_map=yes
)
CXXFLAGS="$ac_save2_CXXFLAGS"
if test $dyn_has_unordered_map = yes; then
AC_DEFINE(HAS_STD_UNORDERED_MAP, 1, [Whether std::unordered_map is available])
OTHERCXXFLAGS="$OTHERCXXFLAGS -std=c++0x"
fi
AC_MSG_RESULT($dyn_has_unordered_map)
fi
if test $dyn_has_unordered_map = no; then
AC_MSG_CHECKING(whether the std::tr1::unordered_map class is available)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <tr1/unordered_map>],
[[
std::tr1::unordered_map<int, int> map;
map[10]=0;
]]
)],
dyn_has_unordered_map=yes
)
if test $dyn_has_unordered_map = yes; then
AC_DEFINE(HAS_TR1_UNORDERED_MAP, 1, [Should use std::tr1::unordered_map])
fi
AC_MSG_RESULT($dyn_has_unordered_map)
fi
if test $dyn_has_unordered_map = no; then
AC_MSG_CHECKING(whether the __gnu_cxx::hash_map class is available as an unordered_map)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <ext/hash_map>],
[[
__gnu_cxx::hash_map<int, int> map;
map[10]=0;
]]
)],
dyn_has_unordered_map=yes
)
if test $dyn_has_unordered_map = yes; then
AC_DEFINE(HAS_EXT_HASH_MAP, 1, [Should use __gnu_cxx::hash_map])
fi
AC_MSG_RESULT($dyn_has_unordered_map)
fi
if test $dyn_has_unordered_map = yes; then
AC_DEFINE(HAS_UNORDERED_MAP, 1, [Whether there is any combatable unordered_map implementation])
fi
AC_MSG_CHECKING(whether the unordered_map class is available at all)
AC_MSG_RESULT($dyn_has_unordered_map)
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_POP(C++)
]
)
# AHX_CHECK_STRERROR_R
# Checks the vailability and type of strerror_r
# Note that checks are done under C++
AC_DEFUN(
[AHX_CHECK_STRERROR_R],
[
AC_LANG_PUSH(C++)
AC_REQUIRE_CPP()
AC_SUBST(HAS_STRERROR_R)
AC_SUBST(IS_ISO_STRERROR_R)
AC_SUBST(IS_GNU_STRERROR_R)
ac_save_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS -Werror"
dyn_has_strerror_r=no
dyn_has_iso_strerror_r=no
if test $dyn_has_strerror_r = no; then
AC_MSG_CHECKING(whether strerror_r is available)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <string.h>],
[[
char b[1];
if (strerror_r(1, b, 1)) return 0;
]]
)],
dyn_has_strerror_r=yes
)
if test $dyn_has_strerror_r = yes; then
AC_DEFINE(HAS_STRERROR_R, 1, [Whether strerror_r is available])
fi
AC_MSG_RESULT($dyn_has_strerror_r)
fi
if test $dyn_has_strerror_r = yes; then
AC_MSG_CHECKING(whether strerror_r is the modern IEEE Std 1003.1-2001 version)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <string.h>],
[[
int(*f)(int,char*,size_t);
f=strerror_r;
f(0,0,0);
]]
)],
dyn_has_iso_strerror_r=yes
)
if test $dyn_has_iso_strerror_r = yes; then
AC_DEFINE(IS_ISO_STRERROR_R, 1, [Whether strerror_r is the modern IEEE Std 1003.1-2001 version])
fi
AC_MSG_RESULT($dyn_has_iso_strerror_r)
if test $dyn_has_iso_strerror_r != yes; then
dyn_has_gnu_strerror_r=no
AC_MSG_CHECKING(whether strerror_r is the old GNU version)
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM(
[#include <string.h>],
[[
char*(*f)(int,char*,size_t);
f=strerror_r;
f(0,0,0);
]]
)],
dyn_has_gnu_strerror_r=yes
)
if test $dyn_has_gnu_strerror_r = yes; then
AC_DEFINE(IS_GNU_STRERROR_R, 1, [Whether strerror_r is the old GNU version])
fi
AC_MSG_RESULT($dyn_has_gnu_strerror_r)
fi
fi
CXXFLAGS="$ac_save_CXXFLAGS"
AC_LANG_POP(C++)
]
)