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crosstool-ng/packages/gcc/8.5.0/0010-crystax.patch
Chris Packham 5ab678eae3 gcc: Bump maintenance versions 
8.4.0 -> 8.5.0
9.3.0 -> 9.4.0

Signed-off-by: Chris Packham <judge.packham@gmail.com>
2021-07-05 21:11:45 +12:00

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commit 080803512c8f6f87c2f1f711170d54033144d628
Author: Dmitry Moskalchuk <dm@crystax.net>
Date: Wed Jul 29 11:28:29 2015 +0300
[android] Apply Android-related modifications
Signed-off-by: Dmitry Moskalchuk <dm@crystax.net>
[Edited: keep libstdc++, drop libcrystax-related modifications]
---
gcc/config.gcc | 17 +++++++-
gcc/config/aarch64/aarch64-linux-android.h | 59 +++++++++++++++++++++++++++++
gcc/config/aarch64/aarch64-linux.h | 9 +++-
gcc/config/arm/arm.h | 3 -
gcc/config/arm/arm.md | 2
gcc/config/arm/arm.opt | 4 +
gcc/config/arm/elf.h | 9 ++--
gcc/config/arm/linux-eabi.h | 7 ++-
gcc/config/i386/gnu-user.h | 7 ++-
gcc/config/i386/gnu-user64.h | 5 ++
gcc/config/i386/linux-common.h | 8 +++
gcc/config/linux-android.h | 13 +++---
gcc/config/mips/android.h | 49 ++++++++++++++++++++++++
gcc/config/mips/gnu-user.h | 6 +-
gcc/config/mips/linux-common.h | 2
gcc/config/mips/t-linux-android | 3 +
gcc/config/mips/t-linux-android64 | 4 +
libgcc/gthr-posix.h | 13 ++++++
libstdc++-v3/configure | 12 +++++
libstdc++-v3/include/bits/locale_facets.h | 18 +++++++-
libstdc++-v3/libsupc++/guard.cc | 5 ++
21 files changed, 235 insertions(+), 20 deletions(-)
create mode 100644 gcc/config/aarch64/aarch64-linux-android.h
create mode 100644 gcc/config/mips/android.h
create mode 100644 gcc/config/mips/t-linux-android
create mode 100644 gcc/config/mips/t-linux-android64
--- a/gcc/config.gcc
+++ b/gcc/config.gcc
@@ -981,14 +981,18 @@
tmake_file="${tmake_file} aarch64/t-aarch64 aarch64/t-aarch64-freebsd"
;;
aarch64*-*-linux*)
- tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h glibc-stdint.h"
+ tm_file="${tm_file} dbxelf.h elfos.h gnu-user.h linux.h linux-android.h glibc-stdint.h"
tm_file="${tm_file} aarch64/aarch64-elf.h aarch64/aarch64-linux.h"
+ extra_options="${extra_options} linux-android.opt"
tmake_file="${tmake_file} aarch64/t-aarch64 aarch64/t-aarch64-linux"
tm_defines="${tm_defines} TARGET_DEFAULT_ASYNC_UNWIND_TABLES=1"
case $target in
aarch64_be-*)
tm_defines="${tm_defines} TARGET_BIG_ENDIAN_DEFAULT=1"
;;
+ aarch64*-*-linux-android*)
+ tm_file="${tm_file} aarch64/aarch64-linux-android.h"
+ ;;
esac
aarch64_multilibs="${with_multilib_list}"
if test "$aarch64_multilibs" = "default"; then
@@ -2133,6 +2137,17 @@
tm_file="dbxelf.h elfos.h gnu-user.h linux.h linux-android.h glibc-stdint.h ${tm_file} mips/gnu-user.h mips/linux.h mips/linux-common.h"
extra_options="${extra_options} linux-android.opt"
case ${target} in
+ mips64*android*)
+ default_mips_arch=mips64r6
+ default_mips_abi=64
+ tm_file="${tm_file} mips/android.h"
+ tmake_file="${tmake_file} mips/t-linux-android64"
+ ;;
+ mips*android*)
+ default_mips_arch=mips32
+ tm_file="${tm_file} mips/android.h"
+ tmake_file="$tmake_file mips/t-linux-android"
+ ;;
mipsisa32r6*)
default_mips_arch=mips32r6
;;
--- /dev/null
+++ b/gcc/config/aarch64/aarch64-linux-android.h
@@ -0,0 +1,59 @@
+/* Machine description for AArch64 architecture.
+ Copyright (C) 2014 Free Software Foundation, Inc.
+
+ This file is part of GCC.
+
+ GCC is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3, or (at your option)
+ any later version.
+
+ GCC is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GCC; see the file COPYING3. If not see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef GCC_AARCH64_LINUX_ANDROID_H
+#define GCC_AARCH64_LINUX_ANDROID_H
+
+
+#undef TARGET_OS_CPP_BUILTINS
+#define TARGET_OS_CPP_BUILTINS() \
+ do \
+ { \
+ GNU_USER_TARGET_OS_CPP_BUILTINS(); \
+ ANDROID_TARGET_OS_CPP_BUILTINS(); \
+ } \
+ while (0)
+
+#undef LINK_SPEC
+#define LINK_SPEC \
+ LINUX_OR_ANDROID_LD (LINUX_TARGET_LINK_SPEC, \
+ LINUX_TARGET_LINK_SPEC " " ANDROID_LINK_SPEC)
+
+#undef CC1_SPEC
+#define CC1_SPEC \
+ LINUX_OR_ANDROID_CC (GNU_USER_TARGET_CC1_SPEC, \
+ GNU_USER_TARGET_CC1_SPEC " " ANDROID_CC1_SPEC("-fpic"))
+
+#define CC1PLUS_SPEC \
+ LINUX_OR_ANDROID_CC ("", ANDROID_CC1PLUS_SPEC)
+
+#undef LIB_SPEC
+#define LIB_SPEC \
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_LIB_SPEC, \
+ GNU_USER_TARGET_NO_PTHREADS_LIB_SPEC " " ANDROID_LIB_SPEC)
+
+#undef STARTFILE_SPEC
+#define STARTFILE_SPEC \
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_STARTFILE_SPEC, ANDROID_STARTFILE_SPEC)
+
+#undef ENDFILE_SPEC
+#define ENDFILE_SPEC \
+ LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
+
+#endif /* GCC_AARCH64_LINUX_ANDROID_H */
--- a/gcc/config/aarch64/aarch64-linux.h
+++ b/gcc/config/aarch64/aarch64-linux.h
@@ -21,7 +21,14 @@
#ifndef GCC_AARCH64_LINUX_H
#define GCC_AARCH64_LINUX_H
-#define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+#ifndef RUNTIME_ROOT_PREFIX
+#define RUNTIME_ROOT_PREFIX ""
+#endif
+#define GLIBC_DYNAMIC_LINKER RUNTIME_ROOT_PREFIX "/lib/ld-linux-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
+#ifdef BIONIC_DYNAMIC_LINKER
+#undef BIONIC_DYNAMIC_LINKER
+#endif
+#define BIONIC_DYNAMIC_LINKER RUNTIME_ROOT_PREFIX "/system/bin/linker64"
#undef MUSL_DYNAMIC_LINKER
#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64%{mbig-endian:_be}%{mabi=ilp32:_ilp32}.so.1"
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -1840,10 +1840,11 @@
#define CASE_VECTOR_PC_RELATIVE (TARGET_THUMB2 \
|| (TARGET_THUMB1 \
+ && !inline_thumb1_jump_table \
&& (optimize_size || flag_pic)))
#define CASE_VECTOR_SHORTEN_MODE(min, max, body) \
- (TARGET_THUMB1 \
+ (TARGET_THUMB1 && !inline_thumb1_jump_table \
? (min >= 0 && max < 512 \
? (ADDR_DIFF_VEC_FLAGS (body).offset_unsigned = 1, QImode) \
: min >= -256 && max < 256 \
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -8640,7 +8640,7 @@
(match_operand:SI 2 "const_int_operand" "") ; total range
(match_operand:SI 3 "" "") ; table label
(match_operand:SI 4 "" "")] ; Out of range label
- "(TARGET_32BIT || optimize_size || flag_pic) && !target_pure_code"
+ "(TARGET_32BIT || ((optimize_size || flag_pic) && !inline_thumb1_jump_table)) && !target_pure_code"
"
{
enum insn_code code;
--- a/gcc/config/arm/arm.opt
+++ b/gcc/config/arm/arm.opt
@@ -202,6 +202,10 @@
Target Report Mask(INTERWORK)
Support calls between Thumb and ARM instruction sets.
+minline-thumb1-jumptable
+Target Report Var(inline_thumb1_jump_table)
+Inline Thumb1 Jump table code
+
mtls-dialect=
Target RejectNegative Joined Enum(tls_type) Var(target_tls_dialect) Init(TLS_GNU)
Specify thread local storage scheme.
--- a/gcc/config/arm/elf.h
+++ b/gcc/config/arm/elf.h
@@ -56,8 +56,7 @@
#undef SUBSUBTARGET_EXTRA_SPECS
#define SUBSUBTARGET_EXTRA_SPECS
-#ifndef ASM_SPEC
-#define ASM_SPEC "\
+#define DEFAULT_ASM_SPEC "\
%{mbig-endian:-EB} \
%{mlittle-endian:-EL} \
%(asm_cpu_spec) \
@@ -66,6 +65,9 @@
%{mthumb-interwork:-mthumb-interwork} \
%{mfloat-abi=*} %{!mfpu=auto: %{mfpu=*}} \
%(subtarget_extra_asm_spec)"
+
+#ifndef ASM_SPEC
+#define ASM_SPEC DEFAULT_ASM_SPEC
#endif
/* The ARM uses @ are a comment character so we need to redefine
@@ -95,7 +97,8 @@
the code more efficient, but for Thumb-1 it's better to put them out of
band unless we are generating compressed tables. */
#define JUMP_TABLES_IN_TEXT_SECTION \
- ((TARGET_32BIT || (TARGET_THUMB && (optimize_size || flag_pic))) \
+ ((TARGET_32BIT || (TARGET_THUMB && !inline_thumb1_jump_table \
+ && (optimize_size || flag_pic))) \
&& !target_pure_code)
#ifndef LINK_SPEC
--- a/gcc/config/arm/linux-eabi.h
+++ b/gcc/config/arm/linux-eabi.h
@@ -102,11 +102,16 @@
#define CC1_SPEC \
LINUX_OR_ANDROID_CC (GNU_USER_TARGET_CC1_SPEC " " ASAN_CC1_SPEC, \
GNU_USER_TARGET_CC1_SPEC " " ASAN_CC1_SPEC " " \
- ANDROID_CC1_SPEC)
+ ANDROID_CC1_SPEC("-fpic"))
#define CC1PLUS_SPEC \
LINUX_OR_ANDROID_CC ("", ANDROID_CC1PLUS_SPEC)
+#undef ASM_SPEC
+#define ASM_SPEC \
+ LINUX_OR_ANDROID_CC (DEFAULT_ASM_SPEC, \
+ DEFAULT_ASM_SPEC " " ANDROID_ASM_SPEC)
+
#undef LIB_SPEC
#define LIB_SPEC \
LINUX_OR_ANDROID_LD (GNU_USER_TARGET_LIB_SPEC, \
--- a/gcc/config/i386/gnu-user.h
+++ b/gcc/config/i386/gnu-user.h
@@ -65,9 +65,14 @@
When the -shared link option is used a final link is not being
done. */
+#undef ANDROID_TARGET_CC1_SPEC
+#define ANDROID_TARGET_CC1_SPEC \
+ " -mssse3 -fno-short-enums " \
+
#undef ASM_SPEC
#define ASM_SPEC \
- "--32 %{msse2avx:%{!mavx:-msse2avx}}"
+ "--32 %{msse2avx:%{!mavx:-msse2avx}} " \
+ LINUX_OR_ANDROID_CC ("", ANDROID_ASM_SPEC)
#undef SUBTARGET_EXTRA_SPECS
#define SUBTARGET_EXTRA_SPECS \
--- a/gcc/config/i386/gnu-user64.h
+++ b/gcc/config/i386/gnu-user64.h
@@ -46,6 +46,11 @@
#define SPEC_X32 "mx32"
#endif
+#undef ANDROID_TARGET_CC1_SPEC
+#define ANDROID_TARGET_CC1_SPEC \
+ "%{m32:-mssse3 -fno-short-enums}" \
+ "%{!m32:-msse4.2 -mpopcnt}"
+
#undef ASM_SPEC
#define ASM_SPEC "%{" SPEC_32 ":--32} \
%{" SPEC_64 ":--64} \
--- a/gcc/config/i386/linux-common.h
+++ b/gcc/config/i386/linux-common.h
@@ -30,7 +30,13 @@
#undef CC1_SPEC
#define CC1_SPEC \
LINUX_OR_ANDROID_CC (GNU_USER_TARGET_CC1_SPEC, \
- GNU_USER_TARGET_CC1_SPEC " " ANDROID_CC1_SPEC)
+ GNU_USER_TARGET_CC1_SPEC \
+ ANDROID_TARGET_CC1_SPEC \
+ " " \
+ ANDROID_CC1_SPEC("-fPIC"))
+
+#define CC1PLUS_SPEC \
+ LINUX_OR_ANDROID_CC ("", ANDROID_CC1PLUS_SPEC)
#undef LINK_SPEC
#define LINK_SPEC \
--- a/gcc/config/linux-android.h
+++ b/gcc/config/linux-android.h
@@ -38,15 +38,18 @@
"%{" NOANDROID "|tno-android-ld:" LINUX_SPEC ";:" ANDROID_SPEC "}"
#define ANDROID_LINK_SPEC \
- "%{shared: -Bsymbolic}"
+ "%{shared: -Bsymbolic} -z noexecstack -z relro -z now"
-#define ANDROID_CC1_SPEC \
+#define ANDROID_CC1_SPEC(ANDROID_PIC_DEFAULT) \
"%{!mglibc:%{!muclibc:%{!mbionic: -mbionic}}} " \
- "%{!fno-pic:%{!fno-PIC:%{!fpic:%{!fPIC: -fPIC}}}}"
+ "%{!fno-pic:%{!fno-PIC:%{!fpic:%{!fPIC: " ANDROID_PIC_DEFAULT "}}}}"
#define ANDROID_CC1PLUS_SPEC \
- "%{!fexceptions:%{!fno-exceptions: -fno-exceptions}} " \
- "%{!frtti:%{!fno-rtti: -fno-rtti}}"
+ "%{!fexceptions:%{!fno-exceptions: -fexceptions}} " \
+ "%{!frtti:%{!fno-rtti: -frtti}}"
+
+#define ANDROID_ASM_SPEC \
+ "--noexecstack"
#define ANDROID_LIB_SPEC \
"%{!static: -ldl}"
--- /dev/null
+++ b/gcc/config/mips/android.h
@@ -0,0 +1,49 @@
+/* Target macros for mips*-*android* targets.
+ Copyright (C) 2014 Free Software Foundation, Inc.
+
+This file is part of GCC.
+
+GCC is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 3, or (at your option)
+any later version.
+
+GCC is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
+
+#undef DRIVER_SELF_SPECS
+#define DRIVER_SELF_SPECS \
+ /* Make sure a -mips option is present. This helps us to pick \
+ the right multilib, and also makes the later specs easier \
+ to write. */ \
+ MIPS_ISA_LEVEL_SPEC, \
+ \
+ /* Infer the default float setting from -march. */ \
+ MIPS_ARCH_FLOAT_SPEC, \
+ \
+ /* Infer the -msynci setting from -march if not explicitly set. */ \
+ MIPS_ISA_SYNCI_SPEC, \
+ \
+ /* If no ABI option is specified, infer one from the ISA level \
+ or -mgp setting. */ \
+ "%{!mabi=*: %{" MIPS_32BIT_OPTION_SPEC ": -mabi=32;: -mabi=64}}", \
+ \
+ /* If no FP ABI option is specified, infer one from the \
+ ABI/ISA level unless there is a conflicting option. */ \
+ "%{!msoft-float: %{!msingle-float: %{!mfp*: %{!mmsa: %{mabi=32: %{" \
+ MIPS_FPXX_OPTION_SPEC ": -mfpxx}}}}}}", \
+ \
+ /* If no odd-spreg option is specified, infer one from the ISA. */ \
+ "%{!modd-spreg: %{mabi=32: %{mips32r6: -mno-odd-spreg}}}", \
+ \
+ /* Base SPECs. */ \
+ BASE_DRIVER_SELF_SPECS, \
+ \
+ /* Use the standard linux specs for everything else. */ \
+ LINUX_DRIVER_SELF_SPECS
--- a/gcc/config/mips/gnu-user.h
+++ b/gcc/config/mips/gnu-user.h
@@ -36,6 +36,7 @@
/* The GNU C++ standard library requires this. */ \
if (c_dialect_cxx ()) \
builtin_define ("_GNU_SOURCE"); \
+ ANDROID_TARGET_OS_CPP_BUILTINS(); \
} while (0)
#undef SUBTARGET_CPP_SPEC
@@ -71,7 +72,8 @@
#undef SUBTARGET_ASM_SPEC
#define SUBTARGET_ASM_SPEC \
- "%{!mno-abicalls:%{mplt:-call_nonpic;:-KPIC}}"
+ "%{!mno-abicalls:%{mplt:-call_nonpic;:-KPIC}} " \
+ LINUX_OR_ANDROID_CC ("", ANDROID_ASM_SPEC)
/* The MIPS assembler has different syntax for .set. We set it to
.dummy to trap any errors. */
@@ -120,7 +122,7 @@
#endif
#define LINUX_DRIVER_SELF_SPECS \
- NO_SHARED_SPECS \
+ LINUX_OR_ANDROID_CC(NO_SHARED_SPECS, "") \
MARCH_MTUNE_NATIVE_SPECS, \
/* -mplt has no effect without -mno-shared. Simplify later \
specs handling by removing a redundant option. */ \
--- a/gcc/config/mips/linux-common.h
+++ b/gcc/config/mips/linux-common.h
@@ -35,7 +35,7 @@
#undef SUBTARGET_CC1_SPEC
#define SUBTARGET_CC1_SPEC \
LINUX_OR_ANDROID_CC (GNU_USER_TARGET_CC1_SPEC, \
- GNU_USER_TARGET_CC1_SPEC " " ANDROID_CC1_SPEC)
+ GNU_USER_TARGET_CC1_SPEC " " ANDROID_CC1_SPEC("-fpic"))
#undef CC1PLUS_SPEC
#define CC1PLUS_SPEC \
--- /dev/null
+++ b/gcc/config/mips/t-linux-android
@@ -0,0 +1,3 @@
+MULTILIB_OPTIONS = mips32r2/mips32r6
+MULTILIB_DIRNAMES = mips-r2 mips-r6
+MULTILIB_OSDIRNAMES = ../libr2 ../libr6
--- /dev/null
+++ b/gcc/config/mips/t-linux-android64
@@ -0,0 +1,4 @@
+MULTILIB_OPTIONS = mabi=32 mips32/mips32r2/mips32r6/mips64r2/mips64r6
+MULTILIB_DIRNAMES = 32 mips-r1 mips-r2 mips-r6 mips64-r2 mips64-r6
+MULTILIB_OSDIRNAMES = ../lib ../lib ../libr2 ../libr6 ../lib64r2 ../lib64
+MULTILIB_REQUIRED = mabi=32/mips32 mabi=32/mips32r2 mabi=32/mips32r6 mips64r2 mips64r6
--- a/libgcc/gthr-posix.h
+++ b/libgcc/gthr-posix.h
@@ -32,6 +32,19 @@
#define __GTHREADS 1
#define __GTHREADS_CXX0X 1
+/* The following should normally be in a different header file,
+ * but I couldn't find the right location. The point of the macro
+ * definition below is to prevent libsupc++ and libstdc++ to reference
+ * weak symbols in their static C++ constructors. Such code crashes
+ * when a shared object linked statically to these libraries is
+ * loaded on Android 2.1 (Eclair) and older platform releases, due
+ * to a dynamic linker bug.
+ */
+#ifdef __ANDROID__
+#undef GTHREAD_USE_WEAK
+#define GTHREAD_USE_WEAK 0
+#endif
+
#include <pthread.h>
#if ((defined(_LIBOBJC) || defined(_LIBOBJC_WEAK)) \
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -78491,6 +78491,18 @@
/* end confdefs.h. */
#include <sys/syscall.h>
int lk;
+#if !defined(SYS_gettid)
+#define SYS_gettid __NR_gettid
+#endif
+#if !defined(SYS_futex)
+#define SYS_futex __NR_futex
+#endif
+#if !defined(SYS_gettid)
+#define SYS_gettid __NR_gettid
+#endif
+#if !defined(SYS_futex)
+#define SYS_futex __NR_futex
+#endif
int
main ()
{
--- a/libstdc++-v3/include/bits/locale_facets.h
+++ b/libstdc++-v3/include/bits/locale_facets.h
@@ -47,6 +47,20 @@
#include <ext/numeric_traits.h>
#include <bits/streambuf_iterator.h>
+#if !__clang__ && __GNUC__ == 4 && __GNUC_MINOR__ == 9 && __i386__
+// CrystaX: for some reason, x86 gcc-4.9 makes ctype<char>::do_widen() and
+// ctype<char>::_M_widen_init() methods working wrong if optimization enabled.
+// For ctype<char>::do_widen(), values of passed arguments (__lo, __hi and __to)
+// are completely messed up and don't correspond to passed values. In case if
+// we disable optimization for those methods, things become correct so we apply
+// this workaround here for a time.
+// TODO: figure out what exactly wrong here - is it bug in GCC optimization
+// algorithm or smth else?
+#define __CRYSTAX_X86_DONT_OPTIMIZE __attribute__((optimize(0)))
+#else
+#define __CRYSTAX_X86_DONT_OPTIMIZE
+#endif
+
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION
@@ -1104,7 +1118,7 @@
* @return @a __hi.
*/
virtual const char*
- do_widen(const char* __lo, const char* __hi, char_type* __to) const
+ do_widen(const char* __lo, const char* __hi, char_type* __to) const __CRYSTAX_X86_DONT_OPTIMIZE
{
if (__builtin_expect(__hi != __lo, true))
__builtin_memcpy(__to, __lo, __hi - __lo);
@@ -1167,7 +1181,7 @@
private:
void _M_narrow_init() const;
- void _M_widen_init() const;
+ void _M_widen_init() const __CRYSTAX_X86_DONT_OPTIMIZE;
};
#ifdef _GLIBCXX_USE_WCHAR_T
--- a/libstdc++-v3/libsupc++/guard.cc
+++ b/libstdc++-v3/libsupc++/guard.cc
@@ -34,7 +34,12 @@
#if defined(__GTHREADS) && defined(__GTHREAD_HAS_COND) \
&& (ATOMIC_INT_LOCK_FREE > 1) && defined(_GLIBCXX_HAVE_LINUX_FUTEX)
# include <climits>
+#if defined(__ANDROID__)
+# include <sys/syscall.h>
+# define SYS_futex __NR_futex
+#else
# include <syscall.h>
+#endif
# include <unistd.h>
# define _GLIBCXX_USE_FUTEX
# define _GLIBCXX_FUTEX_WAIT 0
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