build: Bail if a selected hcache backend cannot be found

diff --git a/configure.ac b/configure.ac
index 03c49cac188023305d2f62f6ebdf45bc0aa0fb6c..7ce52aaa8e8938b19be2cb3e526ccc924e4f6498 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -1028,7 +1028,8 @@ if test -n "$hcache_tokyocabinet" && test "$hcache_tokyocabinet" != "no"; then
                ],[
                        CPPFLAGS="$OLDCPPFLAGS"
                        LDFLAGS="$OLDLDFLAGS"
-               ]))
+                       AC_MSG_ERROR(Unable to find TokyoCabinet)
+               ]),     AC_MSG_ERROR(Unable to find TokyoCabinet))
 fi
 
 dnl -- Kyoto Cabinet --
@@ -1050,7 +1051,8 @@ if test -n "$hcache_kyotocabinet" && test "$hcache_kyotocabinet" != "no"; then
                ],[
                        CPPFLAGS="$OLDCPPFLAGS"
                        LDFLAGS="$OLDLDFLAGS"
-               ]))
+                       AC_MSG_ERROR(Unable to find KyotoCabinet)
+               ]),     AC_MSG_ERROR(Unable to find KyotoCabinet))
 fi
 
 dnl -- GDBM --
@@ -1076,7 +1078,8 @@ if test -n "$hcache_gdbm" && test "$hcache_gdbm" != "no"; then
                ],[
                        CPPFLAGS="$OLDCPPFLAGS"
                        LDFLAGS="$OLDLDFLAGS"
-               ]))
+                       AC_MSG_ERROR(Unable to find GDBM)
+               ]),     AC_MSG_ERROR(Unable to find GDBM))
 fi
 
 dnl -- QDBM --
@@ -1106,7 +1109,8 @@ if test -n "$hcache_qdbm" && test "$hcache_qdbm" != "no"; then
                ],[
                        CPPFLAGS="$OLDCPPFLAGS"
                        LDFLAGS="$OLDLDFLAGS"
-               ]))
+                       AC_MSG_ERROR(Unable to find QDBM)
+               ]),     AC_MSG_ERROR(Unable to find QDBM))
 fi
 
 dnl -- BDB --
@@ -1156,6 +1160,9 @@ if test -n "$hcache_bdb" && test "$hcache_bdb" != "no"; then
                done
                test "$BDB_FOUND" = "yes" && break
        done
+       if test "$BDB_FOUND" != "yes"; then
+               AC_MSG_ERROR(Unable to find BDB)
+       fi
 fi
 
 dnl -- LMDB --
@@ -1176,7 +1183,8 @@ if test -n "$hcache_lmdb" && test "$hcache_lmdb" != "no"; then
                ],[
                        CPPFLAGS="$OLDCPPFLAGS"
                        LDFLAGS="$OLDLDFLAGS"
-               ]))
+                       AC_MSG_ERROR(Unable to find LMDB)
+               ]),     AC_MSG_ERROR(Unable to find LMDB))
 fi
 
 AM_CONDITIONAL(BUILD_HCACHE, test -n "$hcache_db_used")