add more rigorous checks for presence of libkcompat and liburcu

diff --git a/configure.ac b/configure.ac
index 1f2d2c5de7012f78670924b95a168acc63cd3425..dbaa45b7b2f88d2843bb480879186388860e20a2 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -50,7 +50,9 @@ AC_FUNC_MALLOC
 AC_CHECK_FUNCS([gettimeofday munmap socket strerror strtol])
 
 AC_ARG_WITH(urcu, [  --with-urcu path  Path to userspace RCU source], URCU_PATH="$withval", AC_MSG_ERROR([Must specify urcu path.]))
+AC_CHECK_FILE("$URCU_PATH/urcu.h", , AC_MSG_ERROR([Cannot find urcu.h in urcu directory]))
 AC_ARG_WITH(kcompat, [  --with-kcompat path    Path to userspace kcompat source], KCOMPAT_PATH="$withval", AC_MSG_ERROR([Must specify kcompat path.]))
+AC_CHECK_FILE("$KCOMPAT_PATH/kcompat.h", , AC_MSG_ERROR([Cannot find kcompat.h in kcompat directory]))
 AC_SUBST(URCU_PATH)
 AC_SUBST(KCOMPAT_PATH)