[LTP] [PATCH] README: Add missing configure in openposix step

[Yang Xu]

Since 8071ba7("openposix: Setup autoconf and fix installation layout")
, we need to use configure firstly.

Signed-off-by: Yang Xu <xuyang2018.jy@fujitsu.com>
---
 README.md | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index d45d1ee44..d0ca5f4d4 100644
--- a/README.md
+++ b/README.md
@@ -79,11 +79,13 @@ $ cd ../commands/foo
 $ PATH=$PATH:$PWD:$PWD/../../lib/ ./foo01.sh
 ```
 
-Open Posix Testsuite has it's own build system which needs Makefiles to be
-generated first, then compilation should work in subdirectories as well.
+Open Posix Testsuite has it's own configure and build system which needs
+Makefiles to be generated first, then compilation should work in subdirectories
+as well.
 
 ```
 $ cd testcases/open_posix_testsuite/
+$ ./configure
 $ make generate-makefiles
 $ cd conformance/interfaces/foo
 $ make
-- 
2.23.0