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gcc/libstdc++-v3/config.h.in
Jonathan Wakely da29d2a36e PR libstdc++/67843 set shared_ptr lock policy at build-time 
This resolves a longstanding issue where the lock policy for shared_ptr
reference counting depends on compilation options when the header is
included, so that different -march options can cause ABI changes. For
example, objects compiled with -march=armv7 will use atomics to
synchronize reference counts, and objects compiled with -march=armv5t
will use a mutex. That means the shared_ptr control block will have a
different layout in different objects, causing ODR violations and
undefined behaviour. This was the root cause of PR libstdc++/42734 as
well as PR libstdc++/67843.

The solution is to decide on the lock policy at build time, when
libstdc++ is configured. The configure script checks for the
availability of the necessary atomic built-ins for the target and fixes
that choice permanently. Different -march flags used to compile user
code will not cause changes to the lock policy. This results in an ABI
change for certain compilations, but only where there was already an ABI
incompatibility between the libstdc++.so library and objects built with
an incompatible -march option. In general, this means a more stable ABI
that isn't silently altered when -march flags make addition atomic ops
available.

To force a target to use "atomic" or "mutex" the new configure option
--with-libstdcxx-lock-policy can be used.

In order to turn ODR violations into linker errors, the uses of
shared_ptr in filesystem directory iterators have been replaced
with __shared_ptr, and explicit instantiations are declared. This
ensures that object files using those types cannot link to libstdc++
libs unless they use the same lock policy.

	PR libstdc++/67843
	* acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Add new macro
	that defines _GLIBCXX_HAVE_ATOMIC_LOCK_POLICY.
	* config.h.in: Regenerate.
	* configure: Regenerate.
	* configure.ac: Use GLIBCXX_ENABLE_LOCK_POLICY.
	* doc/xml/manual/configure.xml: Document new configure option.
	* include/bits/fs_dir.h (directory_iterator): Use __shared_ptr
	instead of shared_ptr.
	(recursive_directory_iterator): Likewise.
	(__shared_ptr<_Dir>): Add explicit instantiation declaration.
	(__shared_ptr<recursive_directory_iterator::_Dir_stack>): Likewise.
	* include/bits/shared_ptr_base.h (__allocate_shared, __make_shared):
	Add default template argument for _Lock_policy template parameter.
	* include/ext/concurrence.h (__default_lock_policy): Check macro
	_GLIBCXX_HAVE_ATOMIC_LOCK_POLICY instead of checking if the current
	target supports the builtins for compare-and-swap.
	* src/filesystem/std-dir.cc (__shared_ptr<_Dir>): Add explicit
	instantiation definition.
	(__shared_ptr<recursive_directory_iterator::_Dir_stack>): Likewise.
	(directory_iterator, recursive_directory_iterator): Use __make_shared
	instead of make_shared.

From-SVN: r266533
2018-11-27 23:25:56 +00:00

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/* config.h.in. Generated from configure.ac by autoheader. */
/* Define to 1 if you have the `acosf' function. */
#undef HAVE_ACOSF
/* Define to 1 if you have the `acosl' function. */
#undef HAVE_ACOSL
/* Define to 1 if you have the `aligned_alloc' function. */
#undef HAVE_ALIGNED_ALLOC
/* Define to 1 if you have the <arpa/inet.h> header file. */
#undef HAVE_ARPA_INET_H
/* Define to 1 if you have the `asinf' function. */
#undef HAVE_ASINF
/* Define to 1 if you have the `asinl' function. */
#undef HAVE_ASINL
/* Define to 1 if the target assembler supports .symver directive. */
#undef HAVE_AS_SYMVER_DIRECTIVE
/* Define to 1 if you have the `atan2f' function. */
#undef HAVE_ATAN2F
/* Define to 1 if you have the `atan2l' function. */
#undef HAVE_ATAN2L
/* Define to 1 if you have the `atanf' function. */
#undef HAVE_ATANF
/* Define to 1 if you have the `atanl' function. */
#undef HAVE_ATANL
/* Defined if shared_ptr reference counting should use atomic operations. */
#undef HAVE_ATOMIC_LOCK_POLICY
/* Define to 1 if you have the `at_quick_exit' function. */
#undef HAVE_AT_QUICK_EXIT
/* Define to 1 if the target assembler supports thread-local storage. */
#undef HAVE_CC_TLS
/* Define to 1 if you have the `ceilf' function. */
#undef HAVE_CEILF
/* Define to 1 if you have the `ceill' function. */
#undef HAVE_CEILL
/* Define to 1 if you have the <complex.h> header file. */
#undef HAVE_COMPLEX_H
/* Define to 1 if you have the `cosf' function. */
#undef HAVE_COSF
/* Define to 1 if you have the `coshf' function. */
#undef HAVE_COSHF
/* Define to 1 if you have the `coshl' function. */
#undef HAVE_COSHL
/* Define to 1 if you have the `cosl' function. */
#undef HAVE_COSL
/* Define to 1 if you have the <dirent.h> header file. */
#undef HAVE_DIRENT_H
/* Define to 1 if you have the <dlfcn.h> header file. */
#undef HAVE_DLFCN_H
/* Define if EBADMSG exists. */
#undef HAVE_EBADMSG
/* Define if ECANCELED exists. */
#undef HAVE_ECANCELED
/* Define if ECHILD exists. */
#undef HAVE_ECHILD
/* Define if EIDRM exists. */
#undef HAVE_EIDRM
/* Define to 1 if you have the <endian.h> header file. */
#undef HAVE_ENDIAN_H
/* Define if ENODATA exists. */
#undef HAVE_ENODATA
/* Define if ENOLINK exists. */
#undef HAVE_ENOLINK
/* Define if ENOSPC exists. */
#undef HAVE_ENOSPC
/* Define if ENOSR exists. */
#undef HAVE_ENOSR
/* Define if ENOSTR exists. */
#undef HAVE_ENOSTR
/* Define if ENOTRECOVERABLE exists. */
#undef HAVE_ENOTRECOVERABLE
/* Define if ENOTSUP exists. */
#undef HAVE_ENOTSUP
/* Define if EOVERFLOW exists. */
#undef HAVE_EOVERFLOW
/* Define if EOWNERDEAD exists. */
#undef HAVE_EOWNERDEAD
/* Define if EPERM exists. */
#undef HAVE_EPERM
/* Define if EPROTO exists. */
#undef HAVE_EPROTO
/* Define if ETIME exists. */
#undef HAVE_ETIME
/* Define if ETIMEDOUT exists. */
#undef HAVE_ETIMEDOUT
/* Define if ETXTBSY exists. */
#undef HAVE_ETXTBSY
/* Define if EWOULDBLOCK exists. */
#undef HAVE_EWOULDBLOCK
/* Define to 1 if GCC 4.6 supported std::exception_ptr for the target */
#undef HAVE_EXCEPTION_PTR_SINCE_GCC46
/* Define to 1 if you have the <execinfo.h> header file. */
#undef HAVE_EXECINFO_H
/* Define to 1 if you have the `expf' function. */
#undef HAVE_EXPF
/* Define to 1 if you have the `expl' function. */
#undef HAVE_EXPL
/* Define to 1 if you have the `fabsf' function. */
#undef HAVE_FABSF
/* Define to 1 if you have the `fabsl' function. */
#undef HAVE_FABSL
/* Define to 1 if you have the <fcntl.h> header file. */
#undef HAVE_FCNTL_H
/* Define to 1 if you have the <fenv.h> header file. */
#undef HAVE_FENV_H
/* Define to 1 if you have the `finite' function. */
#undef HAVE_FINITE
/* Define to 1 if you have the `finitef' function. */
#undef HAVE_FINITEF
/* Define to 1 if you have the `finitel' function. */
#undef HAVE_FINITEL
/* Define to 1 if you have the <float.h> header file. */
#undef HAVE_FLOAT_H
/* Define to 1 if you have the `floorf' function. */
#undef HAVE_FLOORF
/* Define to 1 if you have the `floorl' function. */
#undef HAVE_FLOORL
/* Define to 1 if you have the `fmodf' function. */
#undef HAVE_FMODF
/* Define to 1 if you have the `fmodl' function. */
#undef HAVE_FMODL
/* Define to 1 if you have the `fpclass' function. */
#undef HAVE_FPCLASS
/* Define to 1 if you have the <fp.h> header file. */
#undef HAVE_FP_H
/* Define to 1 if you have the `frexpf' function. */
#undef HAVE_FREXPF
/* Define to 1 if you have the `frexpl' function. */
#undef HAVE_FREXPL
/* Define if _Unwind_GetIPInfo is available. */
#undef HAVE_GETIPINFO
/* Define if gets is available in <stdio.h> before C++14. */
#undef HAVE_GETS
/* Define to 1 if you have the `hypot' function. */
#undef HAVE_HYPOT
/* Define to 1 if you have the `hypotf' function. */
#undef HAVE_HYPOTF
/* Define to 1 if you have the `hypotl' function. */
#undef HAVE_HYPOTL
/* Define if you have the iconv() function. */
#undef HAVE_ICONV
/* Define to 1 if you have the <ieeefp.h> header file. */
#undef HAVE_IEEEFP_H
/* Define if int64_t is available in <stdint.h>. */
#undef HAVE_INT64_T
/* Define if int64_t is a long. */
#undef HAVE_INT64_T_LONG
/* Define if int64_t is a long long. */
#undef HAVE_INT64_T_LONG_LONG
/* Define to 1 if you have the <inttypes.h> header file. */
#undef HAVE_INTTYPES_H
/* Define to 1 if you have the `isinf' function. */
#undef HAVE_ISINF
/* Define to 1 if you have the `isinff' function. */
#undef HAVE_ISINFF
/* Define to 1 if you have the `isinfl' function. */
#undef HAVE_ISINFL
/* Define to 1 if you have the `isnan' function. */
#undef HAVE_ISNAN
/* Define to 1 if you have the `isnanf' function. */
#undef HAVE_ISNANF
/* Define to 1 if you have the `isnanl' function. */
#undef HAVE_ISNANL
/* Defined if iswblank exists. */
#undef HAVE_ISWBLANK
/* Define if LC_MESSAGES is available in <locale.h>. */
#undef HAVE_LC_MESSAGES
/* Define to 1 if you have the `ldexpf' function. */
#undef HAVE_LDEXPF
/* Define to 1 if you have the `ldexpl' function. */
#undef HAVE_LDEXPL
/* Define to 1 if you have the <libintl.h> header file. */
#undef HAVE_LIBINTL_H
/* Only used in build directory testsuite_hooks.h. */
#undef HAVE_LIMIT_AS
/* Only used in build directory testsuite_hooks.h. */
#undef HAVE_LIMIT_DATA
/* Only used in build directory testsuite_hooks.h. */
#undef HAVE_LIMIT_FSIZE
/* Only used in build directory testsuite_hooks.h. */
#undef HAVE_LIMIT_RSS
/* Only used in build directory testsuite_hooks.h. */
#undef HAVE_LIMIT_VMEM
/* Define if link is available in <unistd.h>. */
#undef HAVE_LINK
/* Define if futex syscall is available. */
#undef HAVE_LINUX_FUTEX
/* Define to 1 if you have the <linux/random.h> header file. */
#undef HAVE_LINUX_RANDOM_H
/* Define to 1 if you have the <linux/types.h> header file. */
#undef HAVE_LINUX_TYPES_H
/* Define to 1 if you have the <locale.h> header file. */
#undef HAVE_LOCALE_H
/* Define to 1 if you have the `log10f' function. */
#undef HAVE_LOG10F
/* Define to 1 if you have the `log10l' function. */
#undef HAVE_LOG10L
/* Define to 1 if you have the `logf' function. */
#undef HAVE_LOGF
/* Define to 1 if you have the `logl' function. */
#undef HAVE_LOGL
/* Define to 1 if you have the <machine/endian.h> header file. */
#undef HAVE_MACHINE_ENDIAN_H
/* Define to 1 if you have the <machine/param.h> header file. */
#undef HAVE_MACHINE_PARAM_H
/* Define if mbstate_t exists in wchar.h. */
#undef HAVE_MBSTATE_T
/* Define to 1 if you have the `memalign' function. */
#undef HAVE_MEMALIGN
/* Define to 1 if you have the <memory.h> header file. */
#undef HAVE_MEMORY_H
/* Define to 1 if you have the `modf' function. */
#undef HAVE_MODF
/* Define to 1 if you have the `modff' function. */
#undef HAVE_MODFF
/* Define to 1 if you have the `modfl' function. */
#undef HAVE_MODFL
/* Define to 1 if you have the <nan.h> header file. */
#undef HAVE_NAN_H
/* Define to 1 if you have the <netdb.h> header file. */
#undef HAVE_NETDB_H
/* Define to 1 if you have the <netinet/in.h> header file. */
#undef HAVE_NETINET_IN_H
/* Define to 1 if you have the <netinet/tcp.h> header file. */
#undef HAVE_NETINET_TCP_H
/* Define if <math.h> defines obsolete isinf function. */
#undef HAVE_OBSOLETE_ISINF
/* Define if <math.h> defines obsolete isnan function. */
#undef HAVE_OBSOLETE_ISNAN
/* Define if poll is available in <poll.h>. */
#undef HAVE_POLL
/* Define to 1 if you have the <poll.h> header file. */
#undef HAVE_POLL_H
/* Define to 1 if you have the `posix_memalign' function. */
#undef HAVE_POSIX_MEMALIGN
/* Define to 1 if you have the `powf' function. */
#undef HAVE_POWF
/* Define to 1 if you have the `powl' function. */
#undef HAVE_POWL
/* Define to 1 if you have the `qfpclass' function. */
#undef HAVE_QFPCLASS
/* Define to 1 if you have the `quick_exit' function. */
#undef HAVE_QUICK_EXIT
/* Define if readlink is available in <unistd.h>. */
#undef HAVE_READLINK
/* Define to 1 if you have the `setenv' function. */
#undef HAVE_SETENV
/* Define to 1 if you have the `sincos' function. */
#undef HAVE_SINCOS
/* Define to 1 if you have the `sincosf' function. */
#undef HAVE_SINCOSF
/* Define to 1 if you have the `sincosl' function. */
#undef HAVE_SINCOSL
/* Define to 1 if you have the `sinf' function. */
#undef HAVE_SINF
/* Define to 1 if you have the `sinhf' function. */
#undef HAVE_SINHF
/* Define to 1 if you have the `sinhl' function. */
#undef HAVE_SINHL
/* Define to 1 if you have the `sinl' function. */
#undef HAVE_SINL
/* Defined if sleep exists. */
#undef HAVE_SLEEP
/* Define to 1 if you have the `sqrtf' function. */
#undef HAVE_SQRTF
/* Define to 1 if you have the `sqrtl' function. */
#undef HAVE_SQRTL
/* Define to 1 if you have the <stdalign.h> header file. */
#undef HAVE_STDALIGN_H
/* Define to 1 if you have the <stdbool.h> header file. */
#undef HAVE_STDBOOL_H
/* Define to 1 if you have the <stdint.h> header file. */
#undef HAVE_STDINT_H
/* Define to 1 if you have the <stdlib.h> header file. */
#undef HAVE_STDLIB_H
/* Define if strerror_l is available in <string.h>. */
#undef HAVE_STRERROR_L
/* Define if strerror_r is available in <string.h>. */
#undef HAVE_STRERROR_R
/* Define to 1 if you have the <strings.h> header file. */
#undef HAVE_STRINGS_H
/* Define to 1 if you have the <string.h> header file. */
#undef HAVE_STRING_H
/* Define to 1 if you have the `strtof' function. */
#undef HAVE_STRTOF
/* Define to 1 if you have the `strtold' function. */
#undef HAVE_STRTOLD
/* Define to 1 if `d_type' is a member of `struct dirent'. */
#undef HAVE_STRUCT_DIRENT_D_TYPE
/* Define if strxfrm_l is available in <string.h>. */
#undef HAVE_STRXFRM_L
/* Define if symlink is available in <unistd.h>. */
#undef HAVE_SYMLINK
/* Define to 1 if the target runtime linker supports binding the same symbol
to different versions. */
#undef HAVE_SYMVER_SYMBOL_RENAMING_RUNTIME_SUPPORT
/* Define to 1 if you have the <sys/filio.h> header file. */
#undef HAVE_SYS_FILIO_H
/* Define to 1 if you have the <sys/ioctl.h> header file. */
#undef HAVE_SYS_IOCTL_H
/* Define to 1 if you have the <sys/ipc.h> header file. */
#undef HAVE_SYS_IPC_H
/* Define to 1 if you have the <sys/isa_defs.h> header file. */
#undef HAVE_SYS_ISA_DEFS_H
/* Define to 1 if you have the <sys/machine.h> header file. */
#undef HAVE_SYS_MACHINE_H
/* Define to 1 if you have the <sys/param.h> header file. */
#undef HAVE_SYS_PARAM_H
/* Define to 1 if you have the <sys/resource.h> header file. */
#undef HAVE_SYS_RESOURCE_H
/* Define to 1 if you have a suitable <sys/sdt.h> header file */
#undef HAVE_SYS_SDT_H
/* Define to 1 if you have the <sys/sem.h> header file. */
#undef HAVE_SYS_SEM_H
/* Define to 1 if you have the <sys/socket.h> header file. */
#undef HAVE_SYS_SOCKET_H
/* Define to 1 if you have the <sys/statvfs.h> header file. */
#undef HAVE_SYS_STATVFS_H
/* Define to 1 if you have the <sys/stat.h> header file. */
#undef HAVE_SYS_STAT_H
/* Define to 1 if you have the <sys/sysinfo.h> header file. */
#undef HAVE_SYS_SYSINFO_H
/* Define to 1 if you have the <sys/time.h> header file. */
#undef HAVE_SYS_TIME_H
/* Define to 1 if you have the <sys/types.h> header file. */
#undef HAVE_SYS_TYPES_H
/* Define to 1 if you have the <sys/uio.h> header file. */
#undef HAVE_SYS_UIO_H
/* Define if S_IFREG is available in <sys/stat.h>. */
#undef HAVE_S_IFREG
/* Define if S_ISREG is available in <sys/stat.h>. */
#undef HAVE_S_ISREG
/* Define to 1 if you have the `tanf' function. */
#undef HAVE_TANF
/* Define to 1 if you have the `tanhf' function. */
#undef HAVE_TANHF
/* Define to 1 if you have the `tanhl' function. */
#undef HAVE_TANHL
/* Define to 1 if you have the `tanl' function. */
#undef HAVE_TANL
/* Define to 1 if you have the <tgmath.h> header file. */
#undef HAVE_TGMATH_H
/* Define to 1 if the target supports thread-local storage. */
#undef HAVE_TLS
/* Define to 1 if you have the <uchar.h> header file. */
#undef HAVE_UCHAR_H
/* Define to 1 if you have the <unistd.h> header file. */
#undef HAVE_UNISTD_H
/* Defined if usleep exists. */
#undef HAVE_USLEEP
/* Define to 1 if you have the <utime.h> header file. */
#undef HAVE_UTIME_H
/* Defined if vfwscanf exists. */
#undef HAVE_VFWSCANF
/* Defined if vswscanf exists. */
#undef HAVE_VSWSCANF
/* Defined if vwscanf exists. */
#undef HAVE_VWSCANF
/* Define to 1 if you have the <wchar.h> header file. */
#undef HAVE_WCHAR_H
/* Defined if wcstof exists. */
#undef HAVE_WCSTOF
/* Define to 1 if you have the <wctype.h> header file. */
#undef HAVE_WCTYPE_H
/* Defined if Sleep exists. */
#undef HAVE_WIN32_SLEEP
/* Define if writev is available in <sys/uio.h>. */
#undef HAVE_WRITEV
/* Define to 1 if you have the `_acosf' function. */
#undef HAVE__ACOSF
/* Define to 1 if you have the `_acosl' function. */
#undef HAVE__ACOSL
/* Define to 1 if you have the `_aligned_malloc' function. */
#undef HAVE__ALIGNED_MALLOC
/* Define to 1 if you have the `_asinf' function. */
#undef HAVE__ASINF
/* Define to 1 if you have the `_asinl' function. */
#undef HAVE__ASINL
/* Define to 1 if you have the `_atan2f' function. */
#undef HAVE__ATAN2F
/* Define to 1 if you have the `_atan2l' function. */
#undef HAVE__ATAN2L
/* Define to 1 if you have the `_atanf' function. */
#undef HAVE__ATANF
/* Define to 1 if you have the `_atanl' function. */
#undef HAVE__ATANL
/* Define to 1 if you have the `_ceilf' function. */
#undef HAVE__CEILF
/* Define to 1 if you have the `_ceill' function. */
#undef HAVE__CEILL
/* Define to 1 if you have the `_cosf' function. */
#undef HAVE__COSF
/* Define to 1 if you have the `_coshf' function. */
#undef HAVE__COSHF
/* Define to 1 if you have the `_coshl' function. */
#undef HAVE__COSHL
/* Define to 1 if you have the `_cosl' function. */
#undef HAVE__COSL
/* Define to 1 if you have the `_expf' function. */
#undef HAVE__EXPF
/* Define to 1 if you have the `_expl' function. */
#undef HAVE__EXPL
/* Define to 1 if you have the `_fabsf' function. */
#undef HAVE__FABSF
/* Define to 1 if you have the `_fabsl' function. */
#undef HAVE__FABSL
/* Define to 1 if you have the `_finite' function. */
#undef HAVE__FINITE
/* Define to 1 if you have the `_finitef' function. */
#undef HAVE__FINITEF
/* Define to 1 if you have the `_finitel' function. */
#undef HAVE__FINITEL
/* Define to 1 if you have the `_floorf' function. */
#undef HAVE__FLOORF
/* Define to 1 if you have the `_floorl' function. */
#undef HAVE__FLOORL
/* Define to 1 if you have the `_fmodf' function. */
#undef HAVE__FMODF
/* Define to 1 if you have the `_fmodl' function. */
#undef HAVE__FMODL
/* Define to 1 if you have the `_fpclass' function. */
#undef HAVE__FPCLASS
/* Define to 1 if you have the `_frexpf' function. */
#undef HAVE__FREXPF
/* Define to 1 if you have the `_frexpl' function. */
#undef HAVE__FREXPL
/* Define to 1 if you have the `_hypot' function. */
#undef HAVE__HYPOT
/* Define to 1 if you have the `_hypotf' function. */
#undef HAVE__HYPOTF
/* Define to 1 if you have the `_hypotl' function. */
#undef HAVE__HYPOTL
/* Define to 1 if you have the `_isinf' function. */
#undef HAVE__ISINF
/* Define to 1 if you have the `_isinff' function. */
#undef HAVE__ISINFF
/* Define to 1 if you have the `_isinfl' function. */
#undef HAVE__ISINFL
/* Define to 1 if you have the `_isnan' function. */
#undef HAVE__ISNAN
/* Define to 1 if you have the `_isnanf' function. */
#undef HAVE__ISNANF
/* Define to 1 if you have the `_isnanl' function. */
#undef HAVE__ISNANL
/* Define to 1 if you have the `_ldexpf' function. */
#undef HAVE__LDEXPF
/* Define to 1 if you have the `_ldexpl' function. */
#undef HAVE__LDEXPL
/* Define to 1 if you have the `_log10f' function. */
#undef HAVE__LOG10F
/* Define to 1 if you have the `_log10l' function. */
#undef HAVE__LOG10L
/* Define to 1 if you have the `_logf' function. */
#undef HAVE__LOGF
/* Define to 1 if you have the `_logl' function. */
#undef HAVE__LOGL
/* Define to 1 if you have the `_modf' function. */
#undef HAVE__MODF
/* Define to 1 if you have the `_modff' function. */
#undef HAVE__MODFF
/* Define to 1 if you have the `_modfl' function. */
#undef HAVE__MODFL
/* Define to 1 if you have the `_powf' function. */
#undef HAVE__POWF
/* Define to 1 if you have the `_powl' function. */
#undef HAVE__POWL
/* Define to 1 if you have the `_qfpclass' function. */
#undef HAVE__QFPCLASS
/* Define to 1 if you have the `_sincos' function. */
#undef HAVE__SINCOS
/* Define to 1 if you have the `_sincosf' function. */
#undef HAVE__SINCOSF
/* Define to 1 if you have the `_sincosl' function. */
#undef HAVE__SINCOSL
/* Define to 1 if you have the `_sinf' function. */
#undef HAVE__SINF
/* Define to 1 if you have the `_sinhf' function. */
#undef HAVE__SINHF
/* Define to 1 if you have the `_sinhl' function. */
#undef HAVE__SINHL
/* Define to 1 if you have the `_sinl' function. */
#undef HAVE__SINL
/* Define to 1 if you have the `_sqrtf' function. */
#undef HAVE__SQRTF
/* Define to 1 if you have the `_sqrtl' function. */
#undef HAVE__SQRTL
/* Define to 1 if you have the `_tanf' function. */
#undef HAVE__TANF
/* Define to 1 if you have the `_tanhf' function. */
#undef HAVE__TANHF
/* Define to 1 if you have the `_tanhl' function. */
#undef HAVE__TANHL
/* Define to 1 if you have the `_tanl' function. */
#undef HAVE__TANL
/* Define to 1 if you have the `_wfopen' function. */
#undef HAVE__WFOPEN
/* Define to 1 if you have the `__cxa_thread_atexit' function. */
#undef HAVE___CXA_THREAD_ATEXIT
/* Define to 1 if you have the `__cxa_thread_atexit_impl' function. */
#undef HAVE___CXA_THREAD_ATEXIT_IMPL
/* Define as const if the declaration of iconv() needs const. */
#undef ICONV_CONST
/* Define to the sub-directory in which libtool stores uninstalled libraries.
*/
#undef LT_OBJDIR
/* Name of package */
#undef PACKAGE
/* Define to the address where bug reports for this package should be sent. */
#undef PACKAGE_BUGREPORT
/* Define to the full name of this package. */
#undef PACKAGE_NAME
/* Define to the full name and version of this package. */
#undef PACKAGE_STRING
/* Define to the one symbol short name of this package. */
#undef PACKAGE_TARNAME
/* Define to the home page for this package. */
#undef PACKAGE_URL
/* Define to the version of this package. */
#undef PACKAGE_VERSION
/* The size of `char', as computed by sizeof. */
#undef SIZEOF_CHAR
/* The size of `int', as computed by sizeof. */
#undef SIZEOF_INT
/* The size of `long', as computed by sizeof. */
#undef SIZEOF_LONG
/* The size of `short', as computed by sizeof. */
#undef SIZEOF_SHORT
/* The size of `void *', as computed by sizeof. */
#undef SIZEOF_VOID_P
/* Define to 1 if you have the ANSI C header files. */
#undef STDC_HEADERS
/* Version number of package */
#undef VERSION
/* Define if C99 functions in <complex.h> should be used in <complex> for
C++11. Using compiler builtins for these functions requires corresponding
C99 library functions to be present. */
#undef _GLIBCXX11_USE_C99_COMPLEX
/* Define if C99 functions or macros in <math.h> should be imported in <cmath>
in namespace std for C++11. */
#undef _GLIBCXX11_USE_C99_MATH
/* Define if C99 functions or macros in <stdio.h> should be imported in
<cstdio> in namespace std for C++11. */
#undef _GLIBCXX11_USE_C99_STDIO
/* Define if C99 functions or macros in <stdlib.h> should be imported in
<cstdlib> in namespace std for C++11. */
#undef _GLIBCXX11_USE_C99_STDLIB
/* Define if C99 functions or macros in <wchar.h> should be imported in
<cwchar> in namespace std for C++11. */
#undef _GLIBCXX11_USE_C99_WCHAR
/* Define if C99 functions in <complex.h> should be used in <complex> for
C++98. Using compiler builtins for these functions requires corresponding
C99 library functions to be present. */
#undef _GLIBCXX98_USE_C99_COMPLEX
/* Define if C99 functions or macros in <math.h> should be imported in <cmath>
in namespace std for C++98. */
#undef _GLIBCXX98_USE_C99_MATH
/* Define if C99 functions or macros in <stdio.h> should be imported in
<cstdio> in namespace std for C++98. */
#undef _GLIBCXX98_USE_C99_STDIO
/* Define if C99 functions or macros in <stdlib.h> should be imported in
<cstdlib> in namespace std for C++98. */
#undef _GLIBCXX98_USE_C99_STDLIB
/* Define if C99 functions or macros in <wchar.h> should be imported in
<cwchar> in namespace std for C++98. */
#undef _GLIBCXX98_USE_C99_WCHAR
/* Define if the compiler supports C++11 atomics. */
#undef _GLIBCXX_ATOMIC_BUILTINS
/* Define to use concept checking code from the boost libraries. */
#undef _GLIBCXX_CONCEPT_CHECKS
/* Define to 1 if a fully dynamic basic_string is wanted, 0 to disable,
undefined for platform defaults */
#undef _GLIBCXX_FULLY_DYNAMIC_STRING
/* Define if gthreads library is available. */
#undef _GLIBCXX_HAS_GTHREADS
/* Define to 1 if a full hosted library is built, or 0 if freestanding. */
#undef _GLIBCXX_HOSTED
/* Define if compatibility should be provided for -mlong-double-64. */
#undef _GLIBCXX_LONG_DOUBLE_COMPAT
/* Define to the letter to which size_t is mangled. */
#undef _GLIBCXX_MANGLE_SIZE_T
/* Define if C99 llrint and llround functions are missing from <math.h>. */
#undef _GLIBCXX_NO_C99_ROUNDING_FUNCS
/* Define if ptrdiff_t is int. */
#undef _GLIBCXX_PTRDIFF_T_IS_INT
/* Define if using setrlimit to set resource limits during "make check" */
#undef _GLIBCXX_RES_LIMITS
/* Define if size_t is unsigned int. */
#undef _GLIBCXX_SIZE_T_IS_UINT
/* Define to the value of the EOF integer constant. */
#undef _GLIBCXX_STDIO_EOF
/* Define to the value of the SEEK_CUR integer constant. */
#undef _GLIBCXX_STDIO_SEEK_CUR
/* Define to the value of the SEEK_END integer constant. */
#undef _GLIBCXX_STDIO_SEEK_END
/* Define to use symbol versioning in the shared library. */
#undef _GLIBCXX_SYMVER
/* Define to use darwin versioning in the shared library. */
#undef _GLIBCXX_SYMVER_DARWIN
/* Define to use GNU versioning in the shared library. */
#undef _GLIBCXX_SYMVER_GNU
/* Define to use GNU namespace versioning in the shared library. */
#undef _GLIBCXX_SYMVER_GNU_NAMESPACE
/* Define to use Sun versioning in the shared library. */
#undef _GLIBCXX_SYMVER_SUN
/* Define if C11 functions in <uchar.h> should be imported into namespace std
in <cuchar>. */
#undef _GLIBCXX_USE_C11_UCHAR_CXX11
/* Define if C99 functions or macros from <wchar.h>, <math.h>, <complex.h>,
<stdio.h>, and <stdlib.h> can be used or exposed. */
#undef _GLIBCXX_USE_C99
/* Define if C99 functions in <complex.h> should be used in <tr1/complex>.
Using compiler builtins for these functions requires corresponding C99
library functions to be present. */
#undef _GLIBCXX_USE_C99_COMPLEX_TR1
/* Define if C99 functions in <ctype.h> should be imported in <tr1/cctype> in
namespace std::tr1. */
#undef _GLIBCXX_USE_C99_CTYPE_TR1
/* Define if C99 functions in <fenv.h> should be imported in <tr1/cfenv> in
namespace std::tr1. */
#undef _GLIBCXX_USE_C99_FENV_TR1
/* Define if C99 functions in <inttypes.h> should be imported in
<tr1/cinttypes> in namespace std::tr1. */
#undef _GLIBCXX_USE_C99_INTTYPES_TR1
/* Define if wchar_t C99 functions in <inttypes.h> should be imported in
<tr1/cinttypes> in namespace std::tr1. */
#undef _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1
/* Define if C99 functions or macros in <math.h> should be imported in
<tr1/cmath> in namespace std::tr1. */
#undef _GLIBCXX_USE_C99_MATH_TR1
/* Define if C99 types in <stdint.h> should be imported in <tr1/cstdint> in
namespace std::tr1. */
#undef _GLIBCXX_USE_C99_STDINT_TR1
/* Defined if clock_gettime syscall has monotonic and realtime clock support.
*/
#undef _GLIBCXX_USE_CLOCK_GETTIME_SYSCALL
/* Defined if clock_gettime has monotonic clock support. */
#undef _GLIBCXX_USE_CLOCK_MONOTONIC
/* Defined if clock_gettime has realtime clock support. */
#undef _GLIBCXX_USE_CLOCK_REALTIME
/* Define if ISO/IEC TR 24733 decimal floating point types are supported on
this host. */
#undef _GLIBCXX_USE_DECIMAL_FLOAT
/* Define if /dev/random and /dev/urandom are available for
std::random_device. */
#undef _GLIBCXX_USE_DEV_RANDOM
/* Define if fchmod is available in <sys/stat.h>. */
#undef _GLIBCXX_USE_FCHMOD
/* Define if fchmodat is available in <sys/stat.h>. */
#undef _GLIBCXX_USE_FCHMODAT
/* Defined if gettimeofday is available. */
#undef _GLIBCXX_USE_GETTIMEOFDAY
/* Define if get_nprocs is available in <sys/sysinfo.h>. */
#undef _GLIBCXX_USE_GET_NPROCS
/* Define if __int128 is supported on this host. */
#undef _GLIBCXX_USE_INT128
/* Define if LFS support is available. */
#undef _GLIBCXX_USE_LFS
/* Define if code specialized for long long should be used. */
#undef _GLIBCXX_USE_LONG_LONG
/* Defined if nanosleep is available. */
#undef _GLIBCXX_USE_NANOSLEEP
/* Define if NLS translations are to be used. */
#undef _GLIBCXX_USE_NLS
/* Define if pthreads_num_processors_np is available in <pthread.h>. */
#undef _GLIBCXX_USE_PTHREADS_NUM_PROCESSORS_NP
/* Define if POSIX read/write locks are available in <gthr.h>. */
#undef _GLIBCXX_USE_PTHREAD_RWLOCK_T
/* Define if /dev/random and /dev/urandom are available for the random_device
of TR1 (Chapter 5.1). */
#undef _GLIBCXX_USE_RANDOM_TR1
/* Define if usable realpath is available in <stdlib.h>. */
#undef _GLIBCXX_USE_REALPATH
/* Defined if sched_yield is available. */
#undef _GLIBCXX_USE_SCHED_YIELD
/* Define if _SC_NPROCESSORS_ONLN is available in <unistd.h>. */
#undef _GLIBCXX_USE_SC_NPROCESSORS_ONLN
/* Define if _SC_NPROC_ONLN is available in <unistd.h>. */
#undef _GLIBCXX_USE_SC_NPROC_ONLN
/* Define if sendfile is available in <sys/sendfile.h>. */
#undef _GLIBCXX_USE_SENDFILE
/* Define if struct stat has timespec members. */
#undef _GLIBCXX_USE_ST_MTIM
/* Define if sysctl(), CTL_HW and HW_NCPU are available in <sys/sysctl.h>. */
#undef _GLIBCXX_USE_SYSCTL_HW_NCPU
/* Define if obsolescent tmpnam is available in <stdio.h>. */
#undef _GLIBCXX_USE_TMPNAM
/* Define if utimensat and UTIME_OMIT are available in <sys/stat.h> and
AT_FDCWD in <fcntl.h>. */
#undef _GLIBCXX_USE_UTIMENSAT
/* Define if code specialized for wchar_t should be used. */
#undef _GLIBCXX_USE_WCHAR_T
/* Define to 1 if a verbose library is built, or 0 otherwise. */
#undef _GLIBCXX_VERBOSE
/* Defined if as can handle rdrand. */
#undef _GLIBCXX_X86_RDRAND
/* Define to 1 if mutex_timedlock is available. */
#undef _GTHREAD_USE_MUTEX_TIMEDLOCK
/* Define if all C++11 floating point overloads are available in <math.h>. */
#if __cplusplus >= 201103L
#undef __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
#endif
/* Define if all C++11 integral type overloads are available in <math.h>. */
#if __cplusplus >= 201103L
#undef __CORRECT_ISO_CPP11_MATH_H_PROTO_INT
#endif
#if defined (HAVE__ACOSF) && ! defined (HAVE_ACOSF)
# define HAVE_ACOSF 1
# define acosf _acosf
#endif
#if defined (HAVE__ACOSL) && ! defined (HAVE_ACOSL)
# define HAVE_ACOSL 1
# define acosl _acosl
#endif
#if defined (HAVE__ASINF) && ! defined (HAVE_ASINF)
# define HAVE_ASINF 1
# define asinf _asinf
#endif
#if defined (HAVE__ASINL) && ! defined (HAVE_ASINL)
# define HAVE_ASINL 1
# define asinl _asinl
#endif
#if defined (HAVE__ATAN2F) && ! defined (HAVE_ATAN2F)
# define HAVE_ATAN2F 1
# define atan2f _atan2f
#endif
#if defined (HAVE__ATAN2L) && ! defined (HAVE_ATAN2L)
# define HAVE_ATAN2L 1
# define atan2l _atan2l
#endif
#if defined (HAVE__ATANF) && ! defined (HAVE_ATANF)
# define HAVE_ATANF 1
# define atanf _atanf
#endif
#if defined (HAVE__ATANL) && ! defined (HAVE_ATANL)
# define HAVE_ATANL 1
# define atanl _atanl
#endif
#if defined (HAVE__CEILF) && ! defined (HAVE_CEILF)
# define HAVE_CEILF 1
# define ceilf _ceilf
#endif
#if defined (HAVE__CEILL) && ! defined (HAVE_CEILL)
# define HAVE_CEILL 1
# define ceill _ceill
#endif
#if defined (HAVE__COSF) && ! defined (HAVE_COSF)
# define HAVE_COSF 1
# define cosf _cosf
#endif
#if defined (HAVE__COSHF) && ! defined (HAVE_COSHF)
# define HAVE_COSHF 1
# define coshf _coshf
#endif
#if defined (HAVE__COSHL) && ! defined (HAVE_COSHL)
# define HAVE_COSHL 1
# define coshl _coshl
#endif
#if defined (HAVE__COSL) && ! defined (HAVE_COSL)
# define HAVE_COSL 1
# define cosl _cosl
#endif
#if defined (HAVE__EXPF) && ! defined (HAVE_EXPF)
# define HAVE_EXPF 1
# define expf _expf
#endif
#if defined (HAVE__EXPL) && ! defined (HAVE_EXPL)
# define HAVE_EXPL 1
# define expl _expl
#endif
#if defined (HAVE__FABSF) && ! defined (HAVE_FABSF)
# define HAVE_FABSF 1
# define fabsf _fabsf
#endif
#if defined (HAVE__FABSL) && ! defined (HAVE_FABSL)
# define HAVE_FABSL 1
# define fabsl _fabsl
#endif
#if defined (HAVE__FINITE) && ! defined (HAVE_FINITE)
# define HAVE_FINITE 1
# define finite _finite
#endif
#if defined (HAVE__FINITEF) && ! defined (HAVE_FINITEF)
# define HAVE_FINITEF 1
# define finitef _finitef
#endif
#if defined (HAVE__FINITEL) && ! defined (HAVE_FINITEL)
# define HAVE_FINITEL 1
# define finitel _finitel
#endif
#if defined (HAVE__FLOORF) && ! defined (HAVE_FLOORF)
# define HAVE_FLOORF 1
# define floorf _floorf
#endif
#if defined (HAVE__FLOORL) && ! defined (HAVE_FLOORL)
# define HAVE_FLOORL 1
# define floorl _floorl
#endif
#if defined (HAVE__FMODF) && ! defined (HAVE_FMODF)
# define HAVE_FMODF 1
# define fmodf _fmodf
#endif
#if defined (HAVE__FMODL) && ! defined (HAVE_FMODL)
# define HAVE_FMODL 1
# define fmodl _fmodl
#endif
#if defined (HAVE__FPCLASS) && ! defined (HAVE_FPCLASS)
# define HAVE_FPCLASS 1
# define fpclass _fpclass
#endif
#if defined (HAVE__FREXPF) && ! defined (HAVE_FREXPF)
# define HAVE_FREXPF 1
# define frexpf _frexpf
#endif
#if defined (HAVE__FREXPL) && ! defined (HAVE_FREXPL)
# define HAVE_FREXPL 1
# define frexpl _frexpl
#endif
#if defined (HAVE__HYPOT) && ! defined (HAVE_HYPOT)
# define HAVE_HYPOT 1
# define hypot _hypot
#endif
#if defined (HAVE__HYPOTF) && ! defined (HAVE_HYPOTF)
# define HAVE_HYPOTF 1
# define hypotf _hypotf
#endif
#if defined (HAVE__HYPOTL) && ! defined (HAVE_HYPOTL)
# define HAVE_HYPOTL 1
# define hypotl _hypotl
#endif
#if defined (HAVE__ISINF) && ! defined (HAVE_ISINF)
# define HAVE_ISINF 1
# define isinf _isinf
#endif
#if defined (HAVE__ISINFF) && ! defined (HAVE_ISINFF)
# define HAVE_ISINFF 1
# define isinff _isinff
#endif
#if defined (HAVE__ISINFL) && ! defined (HAVE_ISINFL)
# define HAVE_ISINFL 1
# define isinfl _isinfl
#endif
#if defined (HAVE__ISNAN) && ! defined (HAVE_ISNAN)
# define HAVE_ISNAN 1
# define isnan _isnan
#endif
#if defined (HAVE__ISNANF) && ! defined (HAVE_ISNANF)
# define HAVE_ISNANF 1
# define isnanf _isnanf
#endif
#if defined (HAVE__ISNANL) && ! defined (HAVE_ISNANL)
# define HAVE_ISNANL 1
# define isnanl _isnanl
#endif
#if defined (HAVE__LDEXPF) && ! defined (HAVE_LDEXPF)
# define HAVE_LDEXPF 1
# define ldexpf _ldexpf
#endif
#if defined (HAVE__LDEXPL) && ! defined (HAVE_LDEXPL)
# define HAVE_LDEXPL 1
# define ldexpl _ldexpl
#endif
#if defined (HAVE__LOG10F) && ! defined (HAVE_LOG10F)
# define HAVE_LOG10F 1
# define log10f _log10f
#endif
#if defined (HAVE__LOG10L) && ! defined (HAVE_LOG10L)
# define HAVE_LOG10L 1
# define log10l _log10l
#endif
#if defined (HAVE__LOGF) && ! defined (HAVE_LOGF)
# define HAVE_LOGF 1
# define logf _logf
#endif
#if defined (HAVE__LOGL) && ! defined (HAVE_LOGL)
# define HAVE_LOGL 1
# define logl _logl
#endif
#if defined (HAVE__MODF) && ! defined (HAVE_MODF)
# define HAVE_MODF 1
# define modf _modf
#endif
#if defined (HAVE__MODFF) && ! defined (HAVE_MODFF)
# define HAVE_MODFF 1
# define modff _modff
#endif
#if defined (HAVE__MODFL) && ! defined (HAVE_MODFL)
# define HAVE_MODFL 1
# define modfl _modfl
#endif
#if defined (HAVE__POWF) && ! defined (HAVE_POWF)
# define HAVE_POWF 1
# define powf _powf
#endif
#if defined (HAVE__POWL) && ! defined (HAVE_POWL)
# define HAVE_POWL 1
# define powl _powl
#endif
#if defined (HAVE__QFPCLASS) && ! defined (HAVE_QFPCLASS)
# define HAVE_QFPCLASS 1
# define qfpclass _qfpclass
#endif
#if defined (HAVE__SINCOS) && ! defined (HAVE_SINCOS)
# define HAVE_SINCOS 1
# define sincos _sincos
#endif
#if defined (HAVE__SINCOSF) && ! defined (HAVE_SINCOSF)
# define HAVE_SINCOSF 1
# define sincosf _sincosf
#endif
#if defined (HAVE__SINCOSL) && ! defined (HAVE_SINCOSL)
# define HAVE_SINCOSL 1
# define sincosl _sincosl
#endif
#if defined (HAVE__SINF) && ! defined (HAVE_SINF)
# define HAVE_SINF 1
# define sinf _sinf
#endif
#if defined (HAVE__SINHF) && ! defined (HAVE_SINHF)
# define HAVE_SINHF 1
# define sinhf _sinhf
#endif
#if defined (HAVE__SINHL) && ! defined (HAVE_SINHL)
# define HAVE_SINHL 1
# define sinhl _sinhl
#endif
#if defined (HAVE__SINL) && ! defined (HAVE_SINL)
# define HAVE_SINL 1
# define sinl _sinl
#endif
#if defined (HAVE__SQRTF) && ! defined (HAVE_SQRTF)
# define HAVE_SQRTF 1
# define sqrtf _sqrtf
#endif
#if defined (HAVE__SQRTL) && ! defined (HAVE_SQRTL)
# define HAVE_SQRTL 1
# define sqrtl _sqrtl
#endif
#if defined (HAVE__STRTOF) && ! defined (HAVE_STRTOF)
# define HAVE_STRTOF 1
# define strtof _strtof
#endif
#if defined (HAVE__STRTOLD) && ! defined (HAVE_STRTOLD)
# define HAVE_STRTOLD 1
# define strtold _strtold
#endif
#if defined (HAVE__TANF) && ! defined (HAVE_TANF)
# define HAVE_TANF 1
# define tanf _tanf
#endif
#if defined (HAVE__TANHF) && ! defined (HAVE_TANHF)
# define HAVE_TANHF 1
# define tanhf _tanhf
#endif
#if defined (HAVE__TANHL) && ! defined (HAVE_TANHL)
# define HAVE_TANHL 1
# define tanhl _tanhl
#endif
#if defined (HAVE__TANL) && ! defined (HAVE_TANL)
# define HAVE_TANL 1
# define tanl _tanl
#endif
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