diff --git a/passes/techmap/liberty_cache.h b/passes/techmap/liberty_cache.h
index 2197f9125..8ae89947f 100644
--- a/passes/techmap/liberty_cache.h
+++ b/passes/techmap/liberty_cache.h
@@ -2,10 +2,12 @@
 #define LIBERTY_CACHE_H
 
 #include "kernel/yosys.h"
-#include <vector>
-#include <string>
-#include <algorithm>
-#include <sys/stat.h>
+
+#ifdef YOSYS_LINK_ABC
+namespace abc {
+	int Abc_RealMain(int argc, char *argv[]);
+}
+#endif
 
 YOSYS_NAMESPACE_BEGIN
 
@@ -17,14 +19,18 @@ YOSYS_NAMESPACE_BEGIN
  *
  * Return: Path to merged SCL cache file, or empty string if conversion fails
  */
-#if defined(YOSYS_LINK_ABC)
-inline std::string convert_liberty_files_to_merged_scl(const std::vector<std::string> &, const std::string &, const std::string &) { return ""; }
-#else
 inline std::string convert_liberty_files_to_merged_scl(const std::vector<std::string> &liberty_files, const std::string &dont_use_args, const std::string &abc_exe)
 {
 	if (liberty_files.empty())
 		return "";
 
+	std::string cache_dir = get_base_tmpdir() + "/yosys-liberty-scl-cache";
+
+	if (!create_directory(cache_dir)) {
+		log_warning("ABC: cannot create cache directory %s, falling back to liberty format\n", cache_dir.c_str());
+		return "";
+	}
+
 	// Sort to ensure consistent hash regardless of order
 	std::vector<std::string> sorted_files = liberty_files;
 	std::sort(sorted_files.begin(), sorted_files.end());
@@ -34,7 +40,7 @@ inline std::string convert_liberty_files_to_merged_scl(const std::vector<std::st
 	for (const std::string &liberty_file : sorted_files) {
 		struct stat liberty_stat;
 		if (stat(liberty_file.c_str(), &liberty_stat) != 0) {
-			log_error("Cannot stat Liberty file: %s\n", liberty_file.c_str());
+			log_error("ABC: cannot stat liberty file: %s\n", liberty_file.c_str());
 			return "";
 		}
 		hash_input += liberty_file + "|";
@@ -43,35 +49,65 @@ inline std::string convert_liberty_files_to_merged_scl(const std::vector<std::st
 	}
 
 	hash_input += dont_use_args;
-
-	// SCL filename
-	std::string first_dir;
-	size_t last_slash = liberty_files[0].find_last_of("/\\");
 	unsigned int hash = 0;
 
-	if (last_slash == std::string::npos) {
-		first_dir = ".";
-	} else {
-		first_dir = liberty_files[0].substr(0, last_slash);
-	}
-
 	for (char c : hash_input)
 		hash = hash * 31 + c;
 
-	std::string merged_scl = stringf("%s/.yosys_merged_%08x.scl", first_dir.c_str(), hash);
+	std::string merged_scl = stringf("%s/yosys_merged_%08x.scl", cache_dir.c_str(), hash);
 	bool need_convert = true;
 	struct stat scl_stat;
 
 	// Check if merged SCL exists and is newer than all liberty files
 	if (stat(merged_scl.c_str(), &scl_stat) == 0) {
 		if (scl_stat.st_mtime >= newest_mtime) {
-			log("ABC: Using cached merged SCL: %s (%zu files)\n", merged_scl.c_str(), liberty_files.size());
+			log("ABC: using cached merged SCL: %s (%zu files)\n", merged_scl.c_str(), liberty_files.size());
 			need_convert = false;
 		}
 	}
 
 	if (need_convert) {
 		// read_lib -X cell1 -X cell2 file1 ; read_lib -X cell1 -X cell2 -m file2 ; ... ; write_scl merged.scl
+		std::string temp_scl = merged_scl + ".tmp";
+
+#ifdef YOSYS_LINK_ABC
+		std::string script_path = stringf("%s/yosys_merged_scl_convert_%08x.script", cache_dir.c_str(), hash);
+		FILE *f = fopen(script_path.c_str(), "w");
+
+		if (f == NULL) {
+			log_warning("ABC: cannot open %s for writing, falling back to liberty format\n", script_path.c_str());
+			return "";
+		}
+
+		bool first = true;
+
+		for (const std::string &liberty_file : liberty_files) {
+			fprintf(f, "read_lib %s%s-w \"%s\"\n", dont_use_args.c_str(), first ? "" : "-m ", liberty_file.c_str());
+			first = false;
+		}
+
+		fprintf(f, "write_scl \"%s\"\n", temp_scl.c_str());
+		fclose(f);
+
+		char *abc_argv[5];
+		abc_argv[0] = strdup(abc_exe.empty() ? "yosys-abc" : abc_exe.c_str());
+		abc_argv[1] = strdup("-s");
+		abc_argv[2] = strdup("-f");
+		abc_argv[3] = strdup(script_path.c_str());
+		abc_argv[4] = 0;
+		int ret = abc::Abc_RealMain(4, abc_argv);
+		free(abc_argv[0]);
+		free(abc_argv[1]);
+		free(abc_argv[2]);
+		free(abc_argv[3]);
+		remove(script_path.c_str());
+
+		if (ret != 0) {
+			log_warning("ABC: merged SCL conversion failed (ret=%d), falling back to liberty format\n", ret);
+			remove(temp_scl.c_str());
+			return "";
+		}
+#else
 		std::string abc_script;
 		bool first = true;
 
@@ -80,23 +116,22 @@ inline std::string convert_liberty_files_to_merged_scl(const std::vector<std::st
 			first = false;
 		}
 
-		std::string temp_scl = merged_scl + ".tmp";
 		abc_script += stringf("write_scl \\\"%s\\\"", temp_scl.c_str());
 		std::string cmd = stringf("\"%s\" -c \"%s\" 2>&1", abc_exe.c_str(), abc_script.c_str());
 		std::string abc_output;
 		int ret = run_command(cmd, [&abc_output](const std::string &line) { abc_output += line + "\n"; });
 
 		if (ret != 0) {
-			log_warning("ABC: Merged SCL conversion failed, falling back to liberty format\n");
+			log_warning("ABC: merged SCL conversion failed, falling back to liberty format\n");
 			if (!abc_output.empty()) {
-				log("ABC conversion output:\n%s", abc_output.c_str());
+				log("ABC: conversion output:\n%s", abc_output.c_str());
 			}
 			remove(temp_scl.c_str());
 			return "";
 		}
-
+#endif
 		if (rename(temp_scl.c_str(), merged_scl.c_str()) != 0) {
-			log_warning("ABC: Failed to rename %s to %s, falling back to liberty format\n", temp_scl.c_str(), merged_scl.c_str());
+			log_warning("ABC: failed to rename %s to %s, falling back to liberty format\n", temp_scl.c_str(), merged_scl.c_str());
 			remove(temp_scl.c_str());
 			return "";
 		}
@@ -104,8 +139,7 @@ inline std::string convert_liberty_files_to_merged_scl(const std::vector<std::st
 
 	return merged_scl;
 }
-#endif
 
 YOSYS_NAMESPACE_END
 
-#endif // LIBERTY_CACHE_H
+#endif // LIBERTY_CACHE_H
\ No newline at end of file