Add rt lib linkage to enable use of clock_nanosleep functions with older glibc.
diff --git a/Makefile.am b/Makefile.am
index c53738a..5e17365 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -25,7 +25,7 @@ bin_SCRIPTS = $(top_srcdir)/*.cl
cgminer_LDFLAGS = $(PTHREAD_FLAGS)
cgminer_LDADD = $(DLOPEN_FLAGS) @LIBCURL_LIBS@ @JANSSON_LIBS@ @PTHREAD_LIBS@ \
@OPENCL_LIBS@ @NCURSES_LIBS@ @PDCURSES_LIBS@ @WS2_LIBS@ \
- @LIBUSB_LIBS@ @MM_LIBS@ \
+ @LIBUSB_LIBS@ @MM_LIBS@ @RT_LIBS@ \
@MATH_LIBS@ lib/libgnu.a ccan/libccan.a
if HAVE_WINDOWS
diff --git a/configure.ac b/configure.ac
index 82bda76..ddf5cae 100644
--- a/configure.ac
+++ b/configure.ac
@@ -67,6 +67,7 @@ OPENCL_LIBS="-lOpenCL"
WS2_LIBS=""
MM_LIBS=""
MATH_LIBS="-lm"
+RT_LIBS="-lrt"
case $target in
amd64-*)
@@ -421,6 +422,7 @@ AC_SUBST(PDCURSES_LIBS)
AC_SUBST(WS2_LIBS)
AC_SUBST(MM_LIBS)
AC_SUBST(MATH_LIBS)
+AC_SUBST(RT_LIBS)
AC_SUBST(ADL_CPPFLAGS)
AC_CONFIG_FILES([