t/README: document --root option

[git.git] / t / README

diff --git a/t/README b/t/README
index dcd3ebb5f2dcdbf15ca0e4a043b45cd2fc36cbb5..0e4e8d8862c96383a6f6f22a1b6bb01044925620 100644 (file)
--- a/t/README
+++ b/t/README
@@ -84,6 +84,12 @@ appropriately before running "make".
        implied by other options like --valgrind and
        GIT_TEST_INSTALLED.
 
        implied by other options like --valgrind and
        GIT_TEST_INSTALLED.
 

+--root=<directory>::
+       Create "trash" directories used to store all temporary data during
+       testing under <directory>, instead of the t/ directory.
+       Using this option with a RAM-based filesystem (such as tmpfs)
+       can massively speed up the test suite.
+

 You can also set the GIT_TEST_INSTALLED environment variable to
 the bindir of an existing git installation to test that installation.
 You still need to have built this git sandbox, from which various
 You can also set the GIT_TEST_INSTALLED environment variable to
 the bindir of an existing git installation to test that installation.
 You still need to have built this git sandbox, from which various