modules/rust: allow setting a version constraint on bindgen

This allows us to ensure that the bindgen we're using is suitable for
our purpose.

2 files changed, 8 insertions, 3 deletions

diff --git a/test cases/rust/12 bindgen/meson.build b/test cases/rust/12 bindgen/meson.build
index 0957581..a88ed81 100644
--- a/test cases/rust/12 bindgen/meson.build
+++ b/test cases/rust/12 bindgen/meson.build
@@ -32,13 +32,18 @@ if result.returncode() != 0
   error('MESON_SKIP_TEST bindgen does not seem to work')
 endif
 
+rust = import('unstable-rust')
+
+# Check version, this case is obviously impossible
+testcase expect_error('Program \'bindgen\' not found or not executable')
+  rust.bindgen(input : 'include/other.h', output : 'other.rs', bindgen_version : ['< 0.1', '> 10000'])
+endtestcase
+
 # This is to test the include_directories argument to bindgen
 inc = include_directories('include')
 
 c_lib = static_library('clib', 'src/source.c', include_directories : inc)
 
-rust = import('unstable-rust')
-
 gen = rust.bindgen(
   input : 'src/header.h',
   output : 'header.rs',
diff --git a/test cases/rust/12 bindgen/test.json b/test cases/rust/12 bindgen/test.json
index 25fafd2..a3b7e29 100644
--- a/test cases/rust/12 bindgen/test.json
+++ b/test cases/rust/12 bindgen/test.json
@@ -4,7 +4,7 @@
   },
   "stdout": [
     {
-      "line": "test cases/rust/12 bindgen/meson.build:42: WARNING: Project targets '>= 0.63' but uses feature introduced in '1.0.0': \"rust.bindgen\" keyword argument \"include_directories\" of type array[str]."
+      "line": "test cases/rust/12 bindgen/meson.build:47: WARNING: Project targets '>= 0.63' but uses feature introduced in '1.0.0': \"rust.bindgen\" keyword argument \"include_directories\" of type array[str]."
     }
   ]
 }