X-Git-Url: https://git.distorted.org.uk/~mdw/catacomb/blobdiff_plain/baf5b59c8aad82395688f0a96efcfba4e16b8fc2..c0f640586df9e46a95d2aeb71ce39c934d17a3dc:/configure.ac

diff --git a/configure.ac b/configure.ac
index 631f7838..3c8cb375 100644
--- a/configure.ac
+++ b/configure.ac
@@ -139,6 +139,8 @@ AC_CHECK_FUNCS([getauxval])
 dnl--------------------------------------------------------------------------
 dnl C programming environment.
 
+CATACOMB_LIBS=
+
 dnl Find out if we're cross-compiling.
 AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
 
@@ -222,6 +224,14 @@ AC_SUBST([limits])
 dnl Functions used for noise-gathering.
 AC_CHECK_FUNCS([setgroups])
 AC_CHECK_HEADERS([linux/random.h])
+mdw_ORIG_LIBS=$LIBS LIBS=$CATACOMB_LIBS
+AC_SEARCH_LIBS([clock_gettime], [rt])
+CATACOMB_LIBS=$LIBS LIBS=$mdw_ORIG_LIBS
+if test $ac_cv_search_clock_gettime != no; then
+  AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
+	    [Define if you have the \`clock_gettime' function.])
+fi
+AC_CHECK_FUNCS([getentropy])
 AC_CACHE_CHECK([whether the freewheel noise generator will work],
 	[catacomb_cv_freewheel],
 [AC_TRY_LINK(
@@ -249,6 +259,9 @@ LIBS=$mdw_ORIG_LIBS
 dnl Memory locking support.
 AC_CHECK_FUNCS([mlock])
 
+dnl Set the master libraries we need.
+AC_SUBST([CATACOMB_LIBS])
+
 dnl Necessary support libraries.
 PKG_CHECK_MODULES([mLib], [mLib >= 2.2.2.1])
 AM_CFLAGS="$AM_CFLAGS $mLib_CFLAGS"