Signal error if Xaw libs are missing in a Lucid build.

1 files changed, 7 insertions, 3 deletions

diff --git a/configure.in b/configure.in
index 108fa4f429d..4c64970fe0f 100644
--- a/configure.in
+++ b/configure.in
@@ -2206,7 +2206,7 @@ fi
 
 dnl Do not put whitespace before the #include statements below.
 dnl Older compilers (eg sunos4 cc) choke on it.
-if test x"${USE_X_TOOLKIT}" = xmaybe; then
+if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
   if test x"${HAVE_X11R5}" = xyes; then
     AC_MSG_CHECKING(X11 version 5 with Xaw)
     AC_CACHE_VAL(emacs_cv_x11_version_5_with_xaw,
@@ -2220,8 +2220,12 @@ if test x"${USE_X_TOOLKIT}" = xmaybe; then
       AC_MSG_RESULT([5 or newer, with Xaw; use toolkit by default])
       USE_X_TOOLKIT=LUCID
     else
-      AC_MSG_RESULT(before 5 or no Xaw; do not use toolkit by default)
-      USE_X_TOOLKIT=none
+      if test x"${USE_X_TOOLKIT}" = xLUCID; then
+        AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
+      else
+        AC_MSG_RESULT(before 5 or no Xaw; do not use toolkit by default)
+        USE_X_TOOLKIT=none
+      fi
     fi
   else
     USE_X_TOOLKIT=none