m4/ax_lib_elfutils.m4: use m4_default() for optional args.

[babeltrace.git] / README

diff --git a/README b/README
index 95cc1fca9359c32d8250e95ad0b9bca8dac84087..c44b5e9892a0bd1f71186c6948e44f120378ad20 100644 (file)
--- a/README
+++ b/README
@@ -49,6 +49,9 @@ To compile Babeltrace, you will need:
        libpopt >= 1.13 development libraries
          (Debian : libpopt-dev)
          (Fedora : popt)
+       elfutils >= 0.154 development libraries (optional)
+         (Debian : libelf-dev, libdw-dev)
+         (Fedora : elfutils-devel, elfutils-libelf-devel)
        python headers (optional)
          (Debian/Ubuntu : python3-dev)
        swig >= 2.0 (optional)