diff options
Diffstat (limited to 'src/third_party/gperftools-2.7/dist/m4/acx_nanosleep.m4')
| -rw-r--r-- | src/third_party/gperftools-2.7/dist/m4/acx_nanosleep.m4 | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/third_party/gperftools-2.7/dist/m4/acx_nanosleep.m4 b/src/third_party/gperftools-2.7/dist/m4/acx_nanosleep.m4 new file mode 100644 index 00000000000..1d443926fa2 --- /dev/null +++ b/src/third_party/gperftools-2.7/dist/m4/acx_nanosleep.m4 @@ -0,0 +1,35 @@ +# 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 +]) |