Rewrite the build.rs to be more Rust idiomatic wrt features

Kerollmops · Kerollmops · commit 6a4fe85ff4bc · 2022-12-24T15:06:51.000+01:00
diff --git a/lmdb-master3-sys/build.rs b/lmdb-master3-sys/build.rs
@@ -42,13 +42,13 @@ fn main() {
             .flag_if_supported("-Wbad-function-cast")
             .flag_if_supported("-Wuninitialized");
 
-        if env::var("CARGO_FEATURE_WITH_ASAN").is_ok() {
+        if cfg!(feature = "with-asan") {
             builder.flag("-fsanitize=address");
         }
 
-        if env::var("CARGO_FEATURE_WITH_FUZZER").is_ok() {
+        if cfg!(feature = "with-fuzzer") {
             builder.flag("-fsanitize=fuzzer");
-        } else if env::var("CARGO_FEATURE_WITH_FUZZER_NO_LINK").is_ok() {
+        } else if cfg!(feature = "with-fuzzer-no-link") {
             builder.flag("-fsanitize=fuzzer-no-link");
         }
 

Original file line number	Diff line number	Diff line change
`@@ -42,13 +42,13 @@ fn main() {`
`42`	`42`	`.flag_if_supported("-Wbad-function-cast")`
`43`	`43`	`.flag_if_supported("-Wuninitialized");`
`44`	`44`
`45`		`- if env::var("CARGO_FEATURE_WITH_ASAN").is_ok() {`
	`45`	`+ if cfg!(feature = "with-asan") {`
`46`	`46`	`builder.flag("-fsanitize=address");`
`47`	`47`	`}`
`48`	`48`
`49`		`- if env::var("CARGO_FEATURE_WITH_FUZZER").is_ok() {`
	`49`	`+ if cfg!(feature = "with-fuzzer") {`
`50`	`50`	`builder.flag("-fsanitize=fuzzer");`
`51`		`- } else if env::var("CARGO_FEATURE_WITH_FUZZER_NO_LINK").is_ok() {`
	`51`	`+ } else if cfg!(feature = "with-fuzzer-no-link") {`
`52`	`52`	`builder.flag("-fsanitize=fuzzer-no-link");`
`53`	`53`	`}`
`54`	`54`