check for readline availability

dev/lckdclient.c includes headers from readline but configure.ac doesn't
make sure these headers are available. This commit makes sure
readline/readline.h is present and assumes readline is properly installed
if this header is present

[#59 state:resolved]

Signed-off-by: Matt Colyer <matt@colyer.name>

1 files changed, 4 insertions, 0 deletions

diff --git a/configure.ac b/configure.ac
index 140d2fe..38795ab 100644
--- a/configure.ac
+++ b/configure.ac
@@ -51,6 +51,10 @@ AC_ARG_ENABLE([dev-tools],
             [build_dev_tools=false])
 if test "$build_dev_tools" = true; then
             DEV_SUB=dev
+            AC_CHECK_HEADERS([readline/readline.h],
+                             [],
+                             [AC_MSG_ERROR([Please install readline development headers])]
+            )
 else
             DEV_SUB=
 fi