browser-window-ffi 0.4.0

FFI bindings for the browser-window crate.
Documentation 
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extern crate cc;
extern crate pkg_config;

use std::env;



fn main() {

	// If this is being build by docs.rs, don't do anything.
	// docs.rs is not able to compile the C/C++ source files because it doesn't have the win32 and cef3 header files available.
	if let Ok(_) = env::var("DOCS_RS") {
		return
	}

	let mut build = cc::Build::new();

	let target = env::var("TARGET").unwrap();

	let mut std_flag = "-std=c11";

	/**************************************
	 *	The Platform source files
	 **************************************/
	if target.contains("windows") {
		std_flag = "/std:c++17";

		// Win32 API
		build
			.file("src/win32.c")
			.file("src/application/win32.c")
			.file("src/window/win32.c")
			.define("BW_WIN32", None)
			.define("_CRT_SECURE_NO_WARNINGS", None);	// Disable sprintf_s warnings. sprintf_s tends to cause segfaults.
	}
	// Non-Windows platforms:
	else {
		match pkg_config::Config::new().atleast_version("3.0").arg("--cflags").probe("gtk+-3.0") {
			Err(e) => panic!("Unable to find GTK 3 development files: {}", e),
			Ok( lib ) => {

				// Manually add GTK includes to compiler
				for inc in &lib.include_paths {
					build.include( inc );
				}

				build
					.file("src/application/gtk.c")
					.file("src/window/gtk.c")
					.define("BW_GTK", None);
			}
		}
	}

	/**************************************
	 *	The Browser Engine source files
	 **************************************/
	if cfg!(feature = "edge") {

		// Egde WebView
		if !target.contains("windows") {
			panic!("The Edge WebView API only works on Windows!");
		}

		build
			.file("src/application/edge.cpp")
			.file("src/browser_window/edge.cpp")
			.define("BW_EDGE", None)
			.cpp(true);
	}
	// CEF 3
	else {
		if target.contains("windows") {
			std_flag = "/std:c++17";
		}
		else {
			std_flag = "-std=c++17";
		}

		// Make sure CEF_PATH is set
		match env::var("CEF_PATH") {
			Err(e) => {
				match e {
					env::VarError::NotPresent => panic!("Environment variable CEF_PATH is not set! This is needed by Browser Window to find CEF's development files. See https://github.com/bamilab/browser-window/tree/master/docs/getting-started for more information."),
					other => panic!("Unable to use CEF_PATH: {}", other)
				}
			},
			Ok( cef_path ) => {
				build.include( &cef_path );
				println!("cargo:rustc-link-search={}/libcef_dll_wrapper", &cef_path );
				println!("cargo:rustc-link-search={}/Release", &cef_path );
				if target.contains("msvc") {
					println!("cargo:rustc-link-lib=static={}", "libcef_dll_wrapper");
					println!("cargo:rustc-link-lib=dylib={}", "libcef");
				}
				else {
					println!("cargo:rustc-link-lib=static={}", "cef_dll_wrapper");
					println!("cargo:rustc-link-lib=dylib={}", "cef");
				}
			}
		}

		// Source files
		build
			.file("src/application/cef.cpp")
			.file("src/browser_window/cef.cpp")
			.file("src/cef/bw_handle_map.cpp")
			.file("src/cef/client_handler.cpp")
			.file("src/cef/exception.cpp")
			.define("BW_CEF", None)
			.cpp(true);
	}

	/**************************************
	 *	All other source files
	 **************************************/
	build
		.file("src/application/common.c")
		.file("src/browser_window/common.c")
		.file("src/err.c")
		.file("src/string.c")
		.file("src/window/common.c")
		.flag( std_flag )
		.compile("browser_window");
}