[librsvg: 1/2] Check for prefixed rust

[Federico Mena Quintero <federico src gnome org>]

commit a2cf04cd8d388f3867a3526f57ba0116430d5550
Author: Heiko Becker <heirecka exherbo org>
Date:   Wed Nov 18 23:30:17 2020 +0100

    Check for prefixed rust
    
    Sometimes with cross-compile toolchains, the tools are prefixed with the
    target arch. AC_CHECK_TOOL looks for such tools.

 configure.ac | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/configure.ac b/configure.ac
index 086da6fa..29318585 100644
--- a/configure.ac
+++ b/configure.ac
@@ -107,7 +107,7 @@ AC_CHECK_PROGS(CARGO, [cargo], [no])
 AS_IF(test x$CARGO = xno,
     AC_MSG_ERROR([cargo is required.  Please install the Rust toolchain from https://www.rust-lang.org/])
 )
-AC_CHECK_PROGS(RUSTC, [rustc], [no])
+AC_CHECK_TOOL(RUSTC, [rustc], [no])
 AS_IF(test x$RUSTC = xno,
     AC_MSG_ERROR([rustc is required.  Please install the Rust toolchain from https://www.rust-lang.org/])
 )