From 7dcc59d4ed6921e8e94ab5f0fbe712216050b1fc Mon Sep 17 00:00:00 2001
From: Andres Vahter <andres@vahter.me>
Date: Mon, 4 Sep 2023 15:21:47 +0300
Subject: expose all stm32-metapac chips as features

add more supported timers
---
 rtic-monotonics/build.rs | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)
 create mode 100644 rtic-monotonics/build.rs

(limited to 'rtic-monotonics/build.rs')

diff --git a/rtic-monotonics/build.rs b/rtic-monotonics/build.rs
new file mode 100644
index 0000000..a2ed570
--- /dev/null
+++ b/rtic-monotonics/build.rs
@@ -0,0 +1,22 @@
+fn main() {
+    // feature=["stm32g081kb"] etc.
+    let stm32_chip: Vec<_> = std::env::vars()
+        .map(|(a, _)| a)
+        .filter(|x| {
+            !x.starts_with("CARGO_FEATURE_STM32_METAPAC")
+                && !x.starts_with("CARGO_FEATURE_STM32_TIM")
+                && x.starts_with("CARGO_FEATURE_STM32")
+        })
+        .collect();
+
+    match stm32_chip.len() {
+        0 => {
+            // Not using stm32.
+        }
+        1 => {
+            // Allows to just use #[cfg(stm32)] if one of the stm32 chips is used.
+            println!("cargo:rustc-cfg=stm32");
+        }
+        _ => panic!("multiple stm32xx definitions {:?}", stm32_chip),
+    }
+}
-- 
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