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build: remove libstdc++ backwards-compat

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Backwards-compatibility for libstdc++ is not limited to straightforward abi
changes. Symbol visibility also needs to be taken into consideration, and
that really can't be addressed simply.

Instead, just static-link libstdc++ for backwards-compat.
This commit is contained in:
Cory Fields 2015-02-23 17:56:15 -05:00
parent 3ee028f131
commit aa3673064c
3 changed files with 1 additions and 97 deletions
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2
configure.ac
View File

@ -133,7 +133,7 @@ AC_ARG_ENABLE([lcov],
AC_ARG_ENABLE([glibc-back-compat],
[AS_HELP_STRING([--enable-glibc-back-compat],
[enable backwards compatibility with glibc and libstdc++])],
[enable backwards compatibility with glibc])],
[use_glibc_compat=$enableval],
[use_glibc_compat=no])

2
src/Makefile.am
View File

@ -280,7 +280,6 @@ libbitcoin_util_a_SOURCES = \
if GLIBC_BACK_COMPAT
libbitcoin_util_a_SOURCES += compat/glibc_compat.cpp
libbitcoin_util_a_SOURCES += compat/glibcxx_compat.cpp
endif
# cli: shared between bitcoin-cli and bitcoin-qt
@ -372,7 +371,6 @@ libbitcoinconsensus_la_SOURCES = \
if GLIBC_BACK_COMPAT
libbitcoinconsensus_la_SOURCES += compat/glibc_compat.cpp
libbitcoinconsensus_la_SOURCES += compat/glibcxx_compat.cpp
endif
libbitcoinconsensus_la_LDFLAGS = -no-undefined $(RELDFLAGS)

94
src/compat/glibcxx_compat.cpp
View File

@ -1,94 +0,0 @@
// Copyright (c) 2009-2014 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#include <cstddef>
#include <istream>
#include <stdexcept>
#include <typeinfo>
#ifndef _GLIBCXX_USE_NOEXCEPT
#define _GLIBCXX_USE_NOEXCEPT throw()
#endif
namespace std
{
const char* bad_exception::what() const throw()
{
return "std::bad_exception";
}
const char* bad_cast::what() const throw()
{
return "std::bad_cast";
}
const char* bad_alloc::what() const throw()
{
return "std::bad_alloc";
}
namespace __detail
{
struct _List_node_base {
void _M_hook(std::__detail::_List_node_base* const __position) throw() __attribute__((used))
{
_M_next = __position;
_M_prev = __position->_M_prev;
__position->_M_prev->_M_next = this;
__position->_M_prev = this;
}
void _M_unhook() __attribute__((used))
{
_List_node_base* const __next_node = _M_next;
_List_node_base* const __prev_node = _M_prev;
__prev_node->_M_next = __next_node;
__next_node->_M_prev = __prev_node;
}
_List_node_base* _M_next;
_List_node_base* _M_prev;
};
} // namespace detail
template ostream& ostream::_M_insert(bool);
template ostream& ostream::_M_insert(long);
template ostream& ostream::_M_insert(double);
template ostream& ostream::_M_insert(unsigned long);
template ostream& ostream::_M_insert(const void*);
template ostream& __ostream_insert(ostream&, const char*, streamsize);
template istream& istream::_M_extract(long&);
template istream& istream::_M_extract(unsigned short&);
out_of_range::~out_of_range() _GLIBCXX_USE_NOEXCEPT {}
length_error::~length_error() _GLIBCXX_USE_NOEXCEPT {}
// Used with permission.
// See: https://github.com/madlib/madlib/commit/c3db418c0d34d6813608f2137fef1012ce03043d
void ctype<char>::_M_widen_init() const
{
char __tmp[sizeof(_M_widen)];
for (unsigned __i = 0; __i < sizeof(_M_widen); ++__i)
__tmp[__i] = __i;
do_widen(__tmp, __tmp + sizeof(__tmp), _M_widen);
_M_widen_ok = 1;
// Set _M_widen_ok to 2 if memcpy can't be used.
for (unsigned __i = 0; __i < sizeof(_M_widen); ++__i)
if (__tmp[__i] != _M_widen[__i]) {
_M_widen_ok = 2;
break;
}
}
void __throw_out_of_range_fmt(const char*, ...) __attribute__((__noreturn__));
void __throw_out_of_range_fmt(const char* err, ...)
{
// Safe and over-simplified version. Ignore the format and print it as-is.
__throw_out_of_range(err);
}
} // namespace std