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specify windows-msvc compiler flags #34

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specify windows-msvc compiler flags #34

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4 changes: 2 additions & 2 deletions Cargo.lock
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31 changes: 29 additions & 2 deletions turbojpeg-sys/build.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -153,6 +153,35 @@ fn build_vendor(link_kind: LinkKind) -> Result<Library> {
cmake.configure_arg("-DREQUIRE_SIMD=ON");
}

let is_msvc = env("CARGO_CFG_TARGET_ENV").unwrap() == "msvc";

#[cfg(target_os = "windows")] {
// add missing msvc-specific flags
if is_msvc {
let opt_level = env("OPT_LEVEL")
.map(|s| s
.to_string_lossy()
.chars()
.nth(0)
.unwrap()
)
.unwrap();

let compiler_flags: &[&str] = match opt_level {
's' => &["/O1", "/Ob1"], // min size + no opt + min inlining
'z' => &["/O1", "/Ob0"], // min size + no opt + no inlining
'1' | '2' => &["/O1"], // min opt
'3' => &["/O2", "/Ob3"], // max opt + max inlining
'0' => &["/Od"], // no opt
_ => panic!("unknown optimization level: '{opt_level}'")
};

for flag in compiler_flags {
cmake.cflag(flag);
}
}
}

let target_os = env::var("CARGO_CFG_TARGET_OS").unwrap();
if target_os == "android" {
let target_arch = env::var("CARGO_CFG_TARGET_ARCH").unwrap();
Expand All @@ -171,8 +200,6 @@ fn build_vendor(link_kind: LinkKind) -> Result<Library> {
let lib_path = dst_path.join("lib");
let include_path = dst_path.join("include");

let is_msvc = env("CARGO_CFG_TARGET_ENV").unwrap() == "msvc";

println!("cargo:rustc-link-search=native={}", lib_path.display());
println!("cargo:rustc-link-lib={}=turbojpeg{}", match link_kind {
LinkKind::Static | LinkKind::Default => "static",
Expand Down