Add support for MacOsX

bin/README.txt

@@ -4,7 +4,8 @@ The same way you can use 'java.library.path' option as well.
 By default binding expects 'imgui-java' ('imgui-java64' for x64 arch) file name.
 You can change that by using 'imgui.library.name' VM option (ex: -Dimgui.library.name=custom-lib-name).
 
-- imgui-java.dll     << win32
+- imgui-java.dll        << win32
-- imgui-java64.dll   << win64
+- imgui-java64.dll      << win64
-- libimgui-java.so   << linux32
+- libimgui-java.so      << linux32
-- libimgui-java64.so << linux64
+- libimgui-java64.so    << linux64
+- libimgui-java64.dylib << MacOs64

buildSrc/src/main/groovy/imgui/generate/GenerateLibs.groovy

@@ -38,6 +38,11 @@ class GenerateLibs extends DefaultTask {
         def linux32 = BuildTarget.newDefaultTarget(BuildTarget.TargetOs.Linux, false)
         def linux64 = BuildTarget.newDefaultTarget(BuildTarget.TargetOs.Linux, true)
 
+        def mac64 = BuildTarget.newDefaultTarget(BuildTarget.TargetOs.MacOsX, true)
+        mac64.cppFlags += " -stdlib=libc++"
+        mac64.cppFlags = mac64.cppFlags.replaceAll("10.5", "10.9")
+        mac64.linkerFlags = mac64.linkerFlags.replaceAll("10.5", "10.9")
+
         // Freetype Deps Config
         win32.cppFlags += " -fstack-protector -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include"
         win32.libraries += "-lfreetype -lbz2 -lssp"
@@ -47,6 +52,8 @@ class GenerateLibs extends DefaultTask {
         linux32.linkerFlags += " -lfreetype"
         linux64.cppFlags += " -I/usr/include/freetype2 -I/usr/include/libpng16 -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include"
         linux64.linkerFlags += " -lfreetype"
+        mac64.cppFlags += " -I/usr/local/include/freetype2 -I/usr/local/include/libpng16 -I/usr/local/include/harfbuzz -I/usr/local/include/glib-2.0 -I/usr/local/lib/glib-2.0/include"
+        mac64.linkerFlags += " -lfreetype"
         // End
 
         new AntScriptGenerator().generate(buildConfig, win32, win64, linux32, linux64)
@@ -58,6 +65,7 @@ class GenerateLibs extends DefaultTask {
         BuildExecutor.executeAnt(jniDir + '/build-windows64.xml', '-v', '-Dhas-compiler=true', '-Drelease=true', 'clean', 'postcompile')
         BuildExecutor.executeAnt(jniDir + '/build-linux32.xml', '-v', '-Dhas-compiler=true', '-Drelease=true', 'clean', 'postcompile')
         BuildExecutor.executeAnt(jniDir + '/build-linux64.xml', '-v', '-Dhas-compiler=true', '-Drelease=true', 'clean', 'postcompile')
+        BuildExecutor.executeAnt(jniDir + '/build-macosx64.xml', '-v', '-Dhas-compiler=true', '-Drelease=true', 'clean', 'postcompile')
         BuildExecutor.executeAnt(jniDir + '/build.xml', '-v', 'pack-natives')
     }
 }

imgui-binding-natives/build.gradle

@@ -24,6 +24,9 @@ if (System.getProperty('deployWin32')) {
 } else if (System.getProperty('deployLinux64')) {
     packageName = 'natives-linux'
     libName = 'libimgui-java64.so'
+} else if (System.getProperty('deployMacOs64')) {
+    packageName = 'natives-macos'
+    libName = 'libimgui-java64.dylib'
 }
 
 jar {

imgui-binding/src/main/java/imgui/ImGui.java

@@ -56,13 +56,17 @@ public final class ImGui {
 
     private static String resolveFullLibName() {
         final boolean isWin = System.getProperty("os.name").toLowerCase().contains("win");
+        final boolean isMac = System.getProperty("os.name").toLowerCase().contains("mac");
         final String libPrefix;
         final String libSuffix;
 
         if (isWin) {
             libPrefix = "";
             libSuffix = ".dll";
-        } else { // Only linux as an alternative OS
+        } else if (isMac) {
+            libPrefix = "lib";
+            libSuffix = ".dylib";
+        } else {
             libPrefix = "lib";
             libSuffix = ".so";
         }

imgui-lwjgl3/build.gradle

@@ -16,6 +16,9 @@ switch (OperatingSystem.current()) {
     case OperatingSystem.WINDOWS:
         project.ext.lwjglNatives = 'natives-windows'
         break
+    case OperatingSystem.MAC_OS:
+        project.ext.lwjglNatives = 'natives-macos'
+        break
 }
 
 dependencies {
@@ -36,6 +39,10 @@ task startExample(type: JavaExec, dependsOn: build) {
     main = 'ImGuiGlfwExample'
     classpath = sourceSets.test.runtimeClasspath
     jvmArgs = ['-Djava.library.path=../bin']
+
+    if (OperatingSystem.current().isMacOsX()) {
+        jvmArgs += ['-XstartOnFirstThread', '-Djava.awt.headless=true']
+    }
 }
 
 task sourcesJar(type: Jar, dependsOn: classes) {