diff options
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 953c460..8f74811 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -2162,6 +2162,23 @@ AC_DEFUN(GLIBCXX_CHECK_POLL, [ fi ]) +dnl +dnl Check whether writev is available in <sys/uio.h>. +dnl + +AC_DEFUN(GLIBCXX_CHECK_WRITEV, [ + AC_CACHE_VAL(glibcxx_cv_WRITEV, [ + AC_TRY_COMPILE([#include <sys/uio.h>], + [struct iovec iov[2]; writev(0, iov, 0); ], + [glibcxx_cv_WRITEV=yes], + [glibcxx_cv_WRITEV=no]) + ]) + if test x$glibcxx_cv_WRITEV = xyes; then + AC_DEFINE(HAVE_WRITEV) + fi +]) + + # Check whether LC_MESSAGES is available in <locale.h>. # Ulrich Drepper <drepper@cygnus.com>, 1995. # |