| # Check for support for nanosleep. It's defined in <time.h>, but on |
| # some systems, such as solaris, you need to link in a library to use it. |
| # We set acx_nanosleep_ok if nanosleep is supported; in that case, |
| # NANOSLEEP_LIBS is set to whatever libraries are needed to support |
| # nanosleep. |
| |
| AC_DEFUN([ACX_NANOSLEEP], |
| [AC_MSG_CHECKING(if nanosleep requires any libraries) |
| AC_LANG_SAVE |
| AC_LANG_C |
| acx_nanosleep_ok="no" |
| NANOSLEEP_LIBS= |
| # For most folks, this should just work |
| AC_TRY_LINK([#include <time.h>], |
| [static struct timespec ts; nanosleep(&ts, NULL);], |
| [acx_nanosleep_ok=yes]) |
| # For solaris, we may need -lrt |
| if test "x$acx_nanosleep_ok" != "xyes"; then |
| OLD_LIBS="$LIBS" |
| LIBS="-lrt $LIBS" |
| AC_TRY_LINK([#include <time.h>], |
| [static struct timespec ts; nanosleep(&ts, NULL);], |
| [acx_nanosleep_ok=yes]) |
| if test "x$acx_nanosleep_ok" = "xyes"; then |
| NANOSLEEP_LIBS="-lrt" |
| fi |
| LIBS="$OLD_LIBS" |
| fi |
| if test "x$acx_nanosleep_ok" != "xyes"; then |
| AC_MSG_ERROR([cannot find the nanosleep function]) |
| else |
| AC_MSG_RESULT(${NANOSLEEP_LIBS:-no}) |
| fi |
| AC_LANG_RESTORE |
| ]) |
