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Define NOTHREADS if std:future is not available

This commit is contained in:
Tatsuhiro Tsujikawa 2014-10-08 23:36:55 +09:00
parent 402c262de5
commit ba92935f64
1 changed files with 20 additions and 1 deletions
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21
configure.ac
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@ -162,6 +162,23 @@ auto tp = std::chrono::steady_clock::now();
AC_MSG_RESULT([yes])], AC_MSG_RESULT([yes])],
[AC_MSG_RESULT([no])]) [AC_MSG_RESULT([no])])
# Check that std::future is available.
AC_MSG_CHECKING([whether std::future is available])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[
#include <vector>
#include <future>
]],
[[
std::vector<std::future<int>> v;
]])],
[AC_DEFINE([HAVE_STD_FUTURE], [1],
[Define to 1 if you have the `std::future`.])
have_std_future=yes
AC_MSG_RESULT([yes])],
[have_std_future=no
AC_MSG_RESULT([no])])
AC_LANG_POP() AC_LANG_POP()
# Checks for libraries. # Checks for libraries.
@ -509,7 +526,9 @@ if test "x$debug" != "xno"; then
AC_DEFINE([DEBUGBUILD], [1], [Define to 1 to enable debug output.]) AC_DEFINE([DEBUGBUILD], [1], [Define to 1 to enable debug output.])
fi fi
if test "x$threads" != "xyes"; then # 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
AC_DEFINE([NOTHREADS], [1], [Define to 1 if you want to disable threads.]) AC_DEFINE([NOTHREADS], [1], [Define to 1 if you want to disable threads.])
fi fi