Fix #193: move instructions for building from git to HACKING

INSTALL is not in git, so having HACKING refer to it was unhelpful. Thanks
to @asmeurer for the report.

1 files changed, 11 insertions, 1 deletions

diff --git a/HACKING b/HACKING
index bb06110..4b63c14 100644
--- a/HACKING
+++ b/HACKING
@@ -4,7 +4,17 @@
 Building from git
 -----------------
 
-See INSTALL.
+To build from git, or without relying on the generated files in a source
+release, automake, autoconf, libtool, pkg-config and git must be installed.
+Run
+
+./bootstrap && ./configure --enable-relocatable
+
+to set up and configure the source tree; optional configure arguments can be
+supplied as normal.
+
+See INSTALL (which is created by bootstrap) for instructions from this point
+on.
 
 
 Working in libenchant