+# Check if clock_gettime, timer_create, timer_settime, and timer_delete are available in lib rt, and if so,
+# add -lrt to LIBS
+AC_CHECK_LIB([rt], [clock_gettime, timer_create, timer_settime, timer_delete])
+
+# Checks for dl.
+AC_CHECK_LIB([dl], [dlopen], [
+ have_libdl=yes
+ libdl_name=dl
+], [
+ # libdl not found, check for dlopen in libc.
+ AC_CHECK_LIB([c], [dlopen], [
+ have_libc_dl=yes
+ libdl_name=c
+ ], [
+ AC_MSG_ERROR([Cannot find dlopen in libdl nor libc. Use [LDFLAGS]=-Ldir to specify their location.])
+ ])
+])
+
+# Check if libdl has dlmopen support.
+AH_TEMPLATE([HAVE_DLMOPEN], ["Define to 1 if dlmopen is available."])
+AC_CHECK_LIB([$libdl_name], [dlmopen], [
+ AC_DEFINE([HAVE_DLMOPEN], [1])
+ HAVE_DLMOPEN=1
+], [
+ HAVE_DLMOPEN=0
+])
+AC_SUBST(HAVE_DLMOPEN)
+