diff options
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 38 |
1 files changed, 37 insertions, 1 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 080a4fc..eb2d262 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -4511,7 +4511,7 @@ AC_DEFUN([GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK], [ [glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK=no]) ]) if test $glibcxx_cv_PTHREAD_MUTEX_CLOCKLOCK = yes; then - AC_DEFINE(_GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK, (_GLIBCXX_TSAN==0), [Define if pthread_mutex_clocklock is available in <pthread.h>.]) + AC_DEFINE(_GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK, 1, [Define if pthread_mutex_clocklock is available in <pthread.h>.]) fi CXXFLAGS="$ac_save_CXXFLAGS" @@ -5769,6 +5769,42 @@ AC_LANG_SAVE AC_LANG_RESTORE ]) +dnl +dnl Check whether the dependencies for std::is_debugger_present are available. +dnl +dnl Defines: +dnl _GLIBCXX_USE_PTRACE if ptrace(int, pid_t, int, int) is in <sys/ptrace.h>. +dnl _GLIBCXX_USE_PROC_SELF_STATUS if /proc/self/status should be used. +dnl +AC_DEFUN([GLIBCXX_CHECK_DEBUGGING], [ + AC_LANG_SAVE + AC_LANG_CPLUSPLUS + + AC_CHECK_HEADERS([sys/ptrace.h debugapi.h]) + + case "$target_os" in + linux*) + AC_DEFINE([_GLIBCXX_USE_PROC_SELF_STATUS],1, + [Define if /proc/self/status should be used for <debugging>.]) + ;; + esac + + AC_MSG_CHECKING([whether ptrace(int, pid_t, int, int) is in <sys/ptrace.h>]) + AC_TRY_COMPILE([ + #include <sys/ptrace.h> + ],[ + int i = ptrace(PTRACE_TRACEME, (pid_t)0, 1, 0); + ], [ac_ptrace=yes], [ac_ptrace=no]) + AC_MSG_RESULT($ac_ptrace) + if test "$ac_ptrace" = yes; then + AC_DEFINE_UNQUOTED(_GLIBCXX_USE_PTRACE, 1, + [Define if ptrace should be used for std::is_debugger_present.]) + fi + + AC_LANG_RESTORE +]) + + # Macros from the top-level gcc directory. m4_include([../config/gc++filt.m4]) m4_include([../config/tls.m4]) |