autotools: Use AC_CANONICAL_HOST

We were calling AC_CANONICAL_TARGET in configure.ac under the
mistaken impression that this allowed setting the target
architecture for cross-compilation output.

However, in GNU terminology the system type that this the
target of cross-compilation is the "host" and "target"
is reserved for setting what the output of the compiled
application should itself target, when compiling a
cross-compiler. Finally "build" is the system type the
build system is itself running under.

So to cross-compile, one invokes `./configure --host ...`
not `--target`.

In any case, we only make use of the `host` variable,
so that is the macro we need to invoke to provide it.

Thanks to Maarten Bosmans for reporting the issue.

Signed-off-by: Marvin Scholz <epirat07@gmail.com>

diff --git a/configure.ac b/configure.ac
index 28b0a14..4e93459 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -11,7 +11,7 @@ AC_CONFIG_MACRO_DIR([m4])
 
 AC_CONFIG_SRCDIR([lib/mdct.c])
 
-AC_CANONICAL_TARGET([])
+AC_CANONICAL_HOST
 
 AM_INIT_AUTOMAKE
 AM_MAINTAINER_MODE