diff -r efe11fb1562e configure.ac
--- a/configure.ac	Thu Dec 28 18:08:02 2017 +0200
+++ b/configure.ac	Sun Apr 01 23:00:22 2018 -0600
@@ -374,7 +374,7 @@
    if test "x$with_caca" = "xyes" && test "x$have_caca" = "xno"; then
       AC_MSG_ERROR([CACA support requested, but libcaca 0.99 not found])
    fi
-   if test test "x$have_caca" = "xyes"; then
+   if test "x$have_caca" = "xyes"; then
      AM_DL()
    fi
    AC_COMPILE_IFELSE( [AC_LANG_PROGRAM([[#include <caca.h> 

--- a/configure 	Thu Dec 28 18:08:02 2017 +0200
+++ b/configure 	Sun Apr 01 23:00:22 2018 -0600
@@ -12651,7 +12651,7 @@
    if test "x$with_caca" = "xyes" && test "x$have_caca" = "xno"; then
       as_fn_error $? "CACA support requested, but libcaca 0.99 not found" "$LINENO" 5
    fi
-   if test test "x$have_caca" = "xyes"; then
+   if test "x$have_caca" = "xyes"; then

   { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lc" >&5
 $as_echo_n "checking for dlopen in -lc... " >&6; }