diff options
Diffstat (limited to 'nptl/sysdeps/pthread/configure.in')
| -rw-r--r-- | nptl/sysdeps/pthread/configure.in | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/nptl/sysdeps/pthread/configure.in b/nptl/sysdeps/pthread/configure.in index 8350f86dc0..e4ea6830d6 100644 --- a/nptl/sysdeps/pthread/configure.in +++ b/nptl/sysdeps/pthread/configure.in @@ -4,3 +4,16 @@ GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. if test "x$libc_cv_gcc___thread" != xyes; then AC_MSG_ERROR(compiler support for __thread is required) fi + +dnl Iff <unwind.h> is available, make sure it is the right one and it +dnl contains struct _Unwind_Exception. +AC_CACHE_CHECK(dnl +for forced unwind support, libc_cv_forced_unwind, [dnl +AC_TRY_LINK([#include <unwind.h>], [ +struct _Unwind_Exception exc; +struct _Unwind_Context *context; +_Unwind_GetCFA (context)], +libc_cv_forced_unwind=yes, libc_cv_forced_unwind=no)]) +if test $libc_cv_forced_unwind = yes; then + AC_DEFINE(HAVE_FORCED_UNWIND) +fi |