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Define NOTHREADS to 1 if thread_local keyword is not available

This commit is contained in:
Tatsuhiro Tsujikawa 2015-01-17 15:52:28 +09:00
parent 3817798905
commit 1cb6d5cb6d
1 changed files with 23 additions and 3 deletions
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26
configure.ac
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@ -197,6 +197,21 @@ std::vector<std::future<int>> v;
[have_std_future=no
AC_MSG_RESULT([no])])
# Check that thread_local is available.
AC_MSG_CHECKING([whether thread_local is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[
]],
[[
thread_local int n;
]])],
[AC_DEFINE([HAVE_THREAD_LOCAL], [1],
[Define to 1 if you have the `thread_local`.])
have_thread_local=yes
AC_MSG_RESULT([yes])],
[have_thread_local=no
AC_MSG_RESULT([no])])
# Check that std::map::emplace is available for g++-4.7.
AC_MSG_CHECKING([whether std::map::emplace is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
@ -608,9 +623,13 @@ if test "x$debug" != "xno"; then
AC_DEFINE([DEBUGBUILD], [1], [Define to 1 to enable debug output.])
fi
# Some platform does not have working std::future. We disable
# threading for those platforms to exclude std::future use.
if test "x$threads" != "xyes" || test "x$have_std_future" != "xyes"; then
enable_threads=yes
# Some platform does not have working std::future or thread_local. We
# disable threading for those platforms.
if test "x$threads" != "xyes" ||
test "x$have_std_future" != "xyes" ||
test "x$have_thread_local" != "xyes"; then
enable_threads=no
AC_DEFINE([NOTHREADS], [1], [Define to 1 if you want to disable threads.])
fi
@ -698,4 +717,5 @@ AC_MSG_NOTICE([summary of build options:
Libnghttp2_asio:${enable_asio_lib}
Examples: ${enable_examples}
Python bindings:${enable_python_bindings}
Threading: ${enable_threads}
])