diff options
Diffstat (limited to 'aclocal.m4')
| -rw-r--r-- | aclocal.m4 | 40 |
1 files changed, 38 insertions, 2 deletions
@@ -1,5 +1,32 @@ dnl ** Additional Autoconf tests for BIRD configure script dnl ** (c) 1999 Martin Mares <mj@ucw.cz> +dnl ** (c) 2021 Maria Matejka <mq@jmq.cz> + +AC_DEFUN([BIRD_CHECK_POINTER_ALIGNMENT], +[ + AC_CACHE_CHECK( + [how pointers are aligned], + [bird_cv_pointer_alignment], + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM( + [ + _Static_assert(_Alignof(void *) == 8, "bad"); + ], [] + ) + ], + [bird_cv_pointer_alignment=8], + AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM( + [ + _Static_assert(_Alignof(void *) == 4, "bad"); + ], [] + ) + ], + [bird_cv_pointer_alignment=4], + [bird_cv_pointer_alignment=unknown] + )) + ) +]) AC_DEFUN([BIRD_CHECK_THREAD_LOCAL], [ @@ -9,14 +36,23 @@ AC_DEFUN([BIRD_CHECK_THREAD_LOCAL], AC_COMPILE_IFELSE([ AC_LANG_PROGRAM( [ - _Thread_local static int x = 42; + static _Thread_local int x = 42; ], [] ) ], [bird_cv_thread_local=yes], + [AC_COMPILE_IFELSE([ + AC_LANG_PROGRAM( + [ + static __thread int x = 42; + ], + [] + ) + ], + [bird_cv_thread_local=__thread], [bird_cv_thread_local=no] - ) + )]) ) ]) |