diff options
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 1b836ccbd..ed537d0bd 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -335,6 +335,26 @@ AC_DEFUN([GUILE_GNU_LD_RELRO], [ AC_SUBST([GNU_LD_FLAGS]) ]) +dnl GUILE_THREAD_LOCAL_STORAGE +dnl +dnl Check for compiler thread-local storage (TLS) support. +AC_DEFUN([GUILE_THREAD_LOCAL_STORAGE], [ + AC_CACHE_CHECK([whether the `__thread' storage class is available], + [ac_cv_have_thread_storage_class], + [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([__thread int tls_integer;], + [tls_integer = 123;])], + [ac_cv_have_thread_storage_class="yes"], + [ac_cv_have_thread_storage_class="no"])]) + + if test "x$ac_cv_have_thread_storage_class" = "xyes"; then + SCM_I_GSC_HAVE_THREAD_STORAGE_CLASS=1 + else + SCM_I_GSC_HAVE_THREAD_STORAGE_CLASS=0 + fi + + AC_SUBST([SCM_I_GSC_HAVE_THREAD_STORAGE_CLASS]) +]) + dnl GUILE_READLINE dnl dnl Check all the things needed by `guile-readline', the Readline |