diff --git a/doc/xschem_man/xschem_man.html b/doc/xschem_man/xschem_man.html
index 8350a83d..26a717e6 100644
--- a/doc/xschem_man/xschem_man.html
+++ b/doc/xschem_man/xschem_man.html
@@ -53,6 +53,7 @@
  <li><a href="tutorial_ngspice_backannotation.html">Backannotation of Ngspice simulation data into xschem</a></li>
  <li><a href="tutorial_symgen.html">Use symgen.awk to create symbols from 'djboxsym' compatible text files</a></li>
  <li><a href="https://xschem.sourceforge.io/stefan/xschem_man/video_tutorials/install_xschem_sky130_and_ngspice.mp4">[Video] Install Xschem, Xschem_sky130, skywater-pdk and ngspice: step by step instructions</a></li>
+ <li><a href="https://xschem.sourceforge.io/stefan/xschem_man/video_tutorials/install_xschem_and_open_pdks.mp4">[Video] Second version, Install Xschem and open_pdks for skywater 130 design</a></li>
  <li><a href="https://xschem.sourceforge.io/stefan/xschem_man/video_tutorials/editing_and_sim.mp4">[Video] Editing commands and simulation</a></li>
  <li><a href="https://xschem.sourceforge.io/stefan/xschem_man/video_tutorials/edit_attributes.mp4">[Video] Editing component attributes</a></li>
  <li><a href="https://xschem.sourceforge.io/stefan/xschem_man/video_tutorials/copy_from_window_to_window.mp4">[Video] Copying objects across xschem windows</a></li>
diff --git a/scconfig/src/default/deps_default.c b/scconfig/src/default/deps_default.c
index ad9a2acb..15bdd909 100644
--- a/scconfig/src/default/deps_default.c
+++ b/scconfig/src/default/deps_default.c
@@ -50,6 +50,11 @@ void deps_default_init(void)
 	dep_add("cc/ldflags_dll",           find_ldflags_dll);
 	dep_add("cc/ldflags_so",            find_ldflags_so);
 	dep_add("cc/func_attr/unused/*",    find_fattr_unused);
+	dep_add("cc/func_attr/noreturn/*",  find_fattr_noreturn);
+	dep_add("cc/func_attr/deprecated/*", find_fattr_deprecated);
+	dep_add("cc/func_attr/weak/*",      find_fattr_weak);
+	dep_add("cc/func_attr/visibility_hidden/*", find_fattr_visibility_hidden);
+	dep_add("cc/func_attr/visibility_default/*", find_fattr_visibility_default);
 	dep_add("cc/declspec/dllimport/*",  find_declspec_dllimport);
 	dep_add("cc/declspec/dllexport/*",  find_declspec_dllexport);
 	dep_add("cc/argmachine/*",          find_cc_argmachine);
diff --git a/scconfig/src/default/find.h b/scconfig/src/default/find.h
index 05013d59..49adf960 100644
--- a/scconfig/src/default/find.h
+++ b/scconfig/src/default/find.h
@@ -11,6 +11,11 @@ int find_funcmacro(const char *name, int logdepth, int fatal);
 int find_constructor(const char *name, int logdepth, int fatal);
 int find_destructor(const char *name, int logdepth, int fatal);
 int find_fattr_unused(const char *name, int logdepth, int fatal);
+int find_fattr_noreturn(const char *name, int logdepth, int fatal);
+int find_fattr_deprecated(const char *name, int logdepth, int fatal);
+int find_fattr_weak(const char *name, int logdepth, int fatal);
+int find_fattr_visibility_hidden(const char *name, int logdepth, int fatal);
+int find_fattr_visibility_default(const char *name, int logdepth, int fatal);
 int find_declspec_dllimport(const char *name, int logdepth, int fatal);
 int find_declspec_dllexport(const char *name, int logdepth, int fatal);
 int find_rdynamic(const char *name, int logdepth, int fatal);
diff --git a/scconfig/src/default/find_cc.c b/scconfig/src/default/find_cc.c
index 83adf40d..5522c18c 100644
--- a/scconfig/src/default/find_cc.c
+++ b/scconfig/src/default/find_cc.c
@@ -399,27 +399,29 @@ int find_destructor(const char *name, int logdepth, int fatal)
 	return 1;
 }
 
-static int test_fattr(const char *name, int logdepth, int fatal, const char *fattr)
+static int test_fattr(const char *name, int logdepth, int fatal,
+	const char *key, const char *fattr, const char *f_spec, int call_testfunc)
 {
 	char path[64];
-	char test_c[256];
+	char test_c[512];
 	const char *test_c_tmp =
 		NL "#include <stdio.h>"
-		NL "static void test1() __attribute__ ((%s));"
-		NL "static void test1()"
+		NL "%s void test1() __attribute__ ((%s));"
+		NL "%s void test1()"
 		NL "{"
 		NL "	puts(\"OK\");"
 		NL "}"
 		NL "int main() {"
-		NL "	puts(\"OK\");"
+		NL "	%s;"
 		NL "	return 0;"
 		NL "}"
 		NL ;
 
 	require("cc/cc", logdepth, fatal);
 
-	sprintf(test_c, test_c_tmp, fattr);
-	sprintf(path, "cc/func_attr/%s/presents", fattr);
+	sprintf(test_c, test_c_tmp, f_spec, fattr, f_spec,
+		(call_testfunc ? "test1()" : "puts(\"OK\")"));
+	sprintf(path, "cc/func_attr/%s/presents", key);
 
 	report("Checking for function attribute %s... ", fattr);
 	logprintf(logdepth, "test_fattr: trying to find %s...\n", fattr);
@@ -436,7 +438,34 @@ static int test_fattr(const char *name, int logdepth, int fatal, const char *fat
 
 int find_fattr_unused(const char *name, int logdepth, int fatal)
 {
-	return test_fattr(name, logdepth, fatal, "unused");
+	return test_fattr(name, logdepth, fatal, "unused", "unused", "static", 0);
+}
+
+int find_fattr_noreturn(const char *name, int logdepth, int fatal)
+{
+	return test_fattr(name, logdepth, fatal, "noreturn", "noreturn", "", 1);
+}
+
+int find_fattr_deprecated(const char *name, int logdepth, int fatal)
+{
+	return test_fattr(name, logdepth, fatal, "deprecated", "depreated", "", 1);
+}
+
+int find_fattr_weak(const char *name, int logdepth, int fatal)
+{
+	return test_fattr(name, logdepth, fatal, "weak", "weak", "", 1);
+}
+
+int find_fattr_visibility_hidden(const char *name, int logdepth, int fatal)
+{
+	return test_fattr(name, logdepth, fatal, "visibility_hidden",
+		"visibility(\"hidden\")", "", 0);
+}
+
+int find_fattr_visibility_default(const char *name, int logdepth, int fatal)
+{
+	return test_fattr(name, logdepth, fatal, "visibility_default",
+		"visibility(\"default\")", "", 1);
 }
 
 static int test_declspec(const char *name, int logdepth, int fatal, const char *dspec)