Fix handling of header-only projects when publishing HDVL sources archives

src/functTest/groovy/com/verificationgentleman/gradle/hdvl/systemverilog/SystemVerilogPluginSpec.groovy

@@ -1175,4 +1175,67 @@ class SystemVerilogPluginSpec extends Specification {
             line.contains('-incdir') && line.endsWith('src/main/sv_headers')
         }
     }
+
+    def "can consume source archive with only exported header directory"() {
+        File dependencyProjectBuildFile = newStandardProject('dependency-project')
+        dependencyProjectBuildFile << """
+            plugins {
+                id 'maven-publish'
+            }
+
+            group = "org.example"
+            version = "1.0.0"
+
+            publishing {
+                repositories {
+                    maven {
+                        name = 'dummy'
+                        url = layout.buildDirectory.dir('dummy-repo')
+                    }
+                }
+            }
+        """
+
+        File dependencyProjectSvDir = new File(dependencyProjectBuildFile.parentFile, 'src/main/sv')
+        dependencyProjectSvDir.deleteDir()
+
+        File dependencyProjectExportedHeaderDir = new File(dependencyProjectBuildFile.parentFile, 'src/main/sv_headers')
+        dependencyProjectExportedHeaderDir.mkdir()
+        File dependencyProjectPrivateHeader = new File(dependencyProjectExportedHeaderDir, 'dependency-project-exported-header.svh')
+        dependencyProjectPrivateHeader.text = "dummy"
+
+        GradleRunner.create()
+            .withProjectDir(dependencyProjectBuildFile.parentFile)
+            .withPluginClasspath()
+            .withArguments(':publish')
+            .build()
+
+        File mainProjectBuildFile = newStandardProject('main-project')
+        mainProjectBuildFile << """
+            dependencies {
+                compile 'org.example:dependency-project:1.0.0'
+            }
+
+            repositories {
+                maven {
+                    url = layout.projectDirectory.dir('../dependency-project/build/dummy-repo')
+                }
+            }
+        """
+
+        when:
+        def result = GradleRunner.create()
+            .withProjectDir(mainProjectBuildFile.parentFile)
+            .withPluginClasspath()
+            .withDebug(true)
+            .withArguments(':genFullXrunArgsFile')
+            .build()
+
+        then:
+        def lines = new File(mainProjectBuildFile.parentFile, 'build/full_xrun_args.f').text.split("\n")
+        def xrunArgsForDependencyProject = new File(lines[0].split(/\s+/)[1])
+        Files.lines(xrunArgsForDependencyProject.toPath()).anyMatch { line ->
+            line.contains('-incdir') && line.endsWith('src/main/sv_headers')
+        }
+    }
 }

src/main/java/com/verificationgentleman/gradle/hdvl/internal/WriteCompileSpecFile.java

@@ -12,14 +12,14 @@ public class WriteCompileSpecFile extends DefaultTask {
     private final RegularFileProperty destination;
 
     private final ConfigurableFileCollection svSourceFiles;
-    private final ConfigurableFileCollection svSPrivateIncludeDirs;
+    private final ConfigurableFileCollection svPrivateIncludeDirs;
     private final ConfigurableFileCollection svExportedHeaderDirs;
 
 
     public WriteCompileSpecFile() {
         destination = getProject().getObjects().fileProperty();
         svSourceFiles = getProject().getObjects().fileCollection();
-        svSPrivateIncludeDirs = getProject().getObjects().fileCollection();
+        svPrivateIncludeDirs = getProject().getObjects().fileCollection();
         svExportedHeaderDirs = getProject().getObjects().fileCollection();
     }
 
@@ -38,8 +38,8 @@ public ConfigurableFileCollection getSvSource() {
     @InputFiles
     @SkipWhenEmpty
     @PathSensitive(PathSensitivity.ABSOLUTE)
-    public ConfigurableFileCollection getSvSPrivateIncludeDirs() {
-        return svSPrivateIncludeDirs;
+    public ConfigurableFileCollection getSvPrivateIncludeDirs() {
+        return svPrivateIncludeDirs;
     }
 
     @InputFiles
@@ -52,7 +52,7 @@ public ConfigurableFileCollection getSvExportedHeaderDirs() {
     @TaskAction
     protected void generate() {
         DefaultHDVLCompileSpec compileSpec = new DefaultHDVLCompileSpec(getSvSource().getFiles(),
-                svSPrivateIncludeDirs.getFiles(), svExportedHeaderDirs.getFiles());
+                svPrivateIncludeDirs.getFiles(), svExportedHeaderDirs.getFiles());
         try {
             JAXBContext jaxbContext = JAXBContext.newInstance(DefaultHDVLCompileSpec.class);
             Marshaller marshaller = jaxbContext.createMarshaller();

src/main/java/com/verificationgentleman/gradle/hdvl/systemverilog/SystemVerilogPlugin.java

@@ -54,7 +54,7 @@ public void execute(SourceSet sourceSet) {
                 if (sourceSet.getName() == "main") {
                     project.getTasks().withType(WriteCompileSpecFile.class, task -> {
                         task.getSvSource().from(svSourceSet.getSv());
-                        task.getSvSPrivateIncludeDirs().from(svSourceSet.getSv().getSourceDirectories());
+                        task.getSvPrivateIncludeDirs().from(svSourceSet.getSv().getSourceDirectories().filter(File::exists));
                         task.getSvExportedHeaderDirs().from(svSourceSet.getSvHeaders().getSourceDirectories().filter(File::exists));
                     });
                     project.getTasks().getByName("hdvlSourcesArchive", task -> {