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Add LIB_SYS_TRY_SHARED ENV var to try to link with shared library #206

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Add LIB_SYS_TRY_SHARED ENV var to try to link with shared library #206

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4 changes: 3 additions & 1 deletion build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -82,10 +82,12 @@ fn main() {
// Apple platforms have libz.1.dylib, and it's usually available even when
// cross compiling (via fat binary or in the target's Xcode SDK)
let cross_compiling = target != host;
let try_link_with_shared =
env::var("LIB_SYS_TRY_SHARED").unwrap_or(String::new()) == "1";
if target.contains("msvc")
|| target.contains("pc-windows-gnu")
|| want_static
|| (cross_compiling && !target.contains("-apple-"))
|| !try_link_with_shared && (cross_compiling && !target.contains("-apple-"))
{
return build_zlib(&mut cfg, &target);
}
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