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Diffstat (limited to 'gdb/gdbsupport/common.m4')
| -rw-r--r-- | gdb/gdbsupport/common.m4 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/gdb/gdbsupport/common.m4 b/gdb/gdbsupport/common.m4 index 471d705..f813c04 100644 --- a/gdb/gdbsupport/common.m4 +++ b/gdb/gdbsupport/common.m4 @@ -37,6 +37,32 @@ AC_DEFUN([GDB_AC_COMMON], [ AC_CHECK_DECLS([strerror, strstr]) + # Check for std::thread. This does not work on some platforms, like + # mingw and DJGPP. + AC_LANG_PUSH([C++]) + AX_PTHREAD([threads=yes], [threads=no]) + if test "$threads" = "yes"; then + save_LIBS="$LIBS" + LIBS="$PTHREAD_LIBS $LIBS" + save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="$PTHREAD_CFLAGS $save_CXXFLAGS" + AC_CACHE_CHECK([for std::thread], + gdb_cv_cxx_std_thread, + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM( + [[#include <thread> + void callback() { }]], + [[std::thread t(callback);]])], + gdb_cv_cxx_std_thread=yes, + gdb_cv_cxx_std_thread=no)]) + LIBS="$save_LIBS" + CXXFLAGS="$save_CXXFLAGS" + fi + if test $gdb_cv_cxx_std_thread = yes; then + AC_DEFINE(CXX_STD_THREAD, 1, + [Define to 1 if std::thread works.]) + fi + AC_LANG_POP + dnl Check if sigsetjmp is available. Using AC_CHECK_FUNCS won't dnl do since sigsetjmp might only be defined as a macro. AC_CACHE_CHECK([for sigsetjmp], gdb_cv_func_sigsetjmp, |