7     println!("cargo:rerun-if-env-changed=LIBZ_SYS_STATIC");  in main()
8     println!("cargo:rerun-if-changed=build.rs");  in main()
14     let want_ng = cfg!(feature = "zlib-ng") && !cfg!(feature = "stock-zlib");  in main()
16     if want_ng && target != "wasm32-unknown-unknown" {  in main()
20     // Don't run pkg-config if we're linking statically (we'll build below) and  in main()
21     // also don't run pkg-config on macOS/FreeBSD/DragonFly. That'll end up printing  in main()
22     // `-L /usr/lib` which wreaks havoc with linking to an OpenSSL in /usr/local/lib  in main()
27        !target.contains("msvc") && // pkg-config just never works here  in main()
33         // packages adding non-system search paths to link against libraries  in main()
34         // that are also found in a system-wide lib dir.  in main()
35         let zlib = pkg_config::Config::new()  in main()  localVariable
38             .probe("zlib");  in main()
39         match zlib {  in main()
42                 println!("cargo-warning={}", e.to_string())  in main()
55     // link to it even when cross-compiling.  in main()
57         println!("cargo:rustc-link-lib=z");  in main()
72     let apple_to_apple = host.contains("-apple-") && target.contains("-apple-");  in main()
74         || target.contains("pc-windows-gnu")  in main()
83     // pkg-config files that we would find above.  in main()
85     // In any case test if zlib is actually installed and if so we link to it,  in main()
88         println!("cargo:rustc-link-lib=z");  in main()
99     cfg.warnings(false).out_dir(&lib).include("src/zlib");  in build_zlib()
101     cfg.file("src/zlib/adler32.c")  in build_zlib()
102         .file("src/zlib/compress.c")  in build_zlib()
103         .file("src/zlib/crc32.c")  in build_zlib()
104         .file("src/zlib/deflate.c")  in build_zlib()
105         .file("src/zlib/infback.c")  in build_zlib()
106         .file("src/zlib/inffast.c")  in build_zlib()
107         .file("src/zlib/inflate.c")  in build_zlib()
108         .file("src/zlib/inftrees.c")  in build_zlib()
109         .file("src/zlib/trees.c")  in build_zlib()
110         .file("src/zlib/uncompr.c")  in build_zlib()
111         .file("src/zlib/zutil.c");  in build_zlib()
116         cfg.file("src/zlib/gzclose.c")  in build_zlib()
117             .file("src/zlib/gzlib.c")  in build_zlib()
118             .file("src/zlib/gzread.c")  in build_zlib()
119             .file("src/zlib/gzwrite.c");  in build_zlib()
126         cfg.flag("-fvisibility=hidden");  in build_zlib()
138     fs::copy("src/zlib/zlib.h", dst.join("include/zlib.h")).unwrap();  in build_zlib()
139     fs::copy("src/zlib/zconf.h", dst.join("include/zconf.h")).unwrap();  in build_zlib()
143         lib.join("pkgconfig/zlib.pc"),  in build_zlib()
144         fs::read_to_string("src/zlib/zlib.pc.in")  in build_zlib()
151     println!("cargo:rustc-link-search=native={}", lib.to_str().unwrap());  in build_zlib()
155 #[cfg(not(feature = "zlib-ng"))]
158 #[cfg(feature = "zlib-ng")]
160 #[cfg(feature = "zlib-ng")]
164 fn try_vcpkg() -> bool {  in try_vcpkg()
169 fn try_vcpkg() -> bool {  in try_vcpkg()
170     // see if there is a vcpkg tree with zlib installed  in try_vcpkg()
173         .lib_names("zlib", "zlib1")  in try_vcpkg()
174         .probe("zlib")  in try_vcpkg()
178             println!("note, vcpkg did not find zlib: {}", e);  in try_vcpkg()
184 fn zlib_installed(cfg: &mut cc::Build) -> bool {  in zlib_installed()
187     cmd.arg("src/smoke.c").arg("-o").arg("/dev/null").arg("-lz");  in zlib_installed()