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-rw-r--r--INSTALL7
1 files changed, 7 insertions, 0 deletions
diff --git a/INSTALL b/INSTALL
index c41bdd9f7cd..5c6bc0b97dd 100644
--- a/INSTALL
+++ b/INSTALL
@@ -323,6 +323,13 @@ and is useful with GNU-compatible compilers. On a recent GNU system
there should be no warnings; on older and on non-GNU systems the
generated warnings may still be useful.
+Use --enable-link-time-optimization to enable link-time optimizer, which
+is available in GNU compiler since version 4.5.0. If your compiler is not
+GNU or older than version 4.5.0, this option does nothing. If `configure'
+can determine number of online CPUS on your system, final link-time
+optimization and code generation is executed in parallel using one job
+per each available online CPU.
+
The `--prefix=PREFIXDIR' option specifies where the installation process
should put emacs and its data files. This defaults to `/usr/local'.
- Emacs (and the other utilities users run) go in PREFIXDIR/bin