From 09b3b8618035fdc6ffb2e11bfa0efd1fcce2cb48 Mon Sep 17 00:00:00 2001
From: servostar <sven.vogel123@web.de>
Date: Thu, 18 Jul 2024 23:05:41 +0200
Subject: [PATCH] added configuration options for driver

---
 src/cfg/opt.c       | 12 ++++++++++++
 src/cfg/opt.h       |  2 ++
 src/link/driver.h   |  2 ++
 src/llvm/link/lld.c |  2 +-
 4 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/cfg/opt.c b/src/cfg/opt.c
index f5f47aa..eb0ab8e 100644
--- a/src/cfg/opt.c
+++ b/src/cfg/opt.c
@@ -9,6 +9,7 @@
 #include <assert.h>
 #include <toml.h>
 #include <mem/cache.h>
+#include <link/driver.h>
 
 static GHashTable* args = NULL;
 
@@ -98,6 +99,7 @@ TargetConfig* default_target_config() {
     config->print_ast = false;
     config->print_asm = false;
     config->print_ir = false;
+    config->driver = DEFAULT_DRIVER;
     config->mode = Application;
     config->archive_directory = mem_strdup(MemoryNamespaceOpt, "archive");
     config->output_directory = mem_strdup(MemoryNamespaceOpt, "bin");
@@ -160,6 +162,14 @@ TargetConfig* default_target_config_from_args() {
         }
     }
 
+    if (is_option_set("driver")) {
+        const Option* opt = get_option("driver");
+
+        if (opt->value != NULL) {
+            config->driver = mem_strdup(MemoryNamespaceOpt, (char*) opt->value);
+        }
+    }
+
     // TODO: free vvvvvvvvvvvvv
     char* cwd = g_get_current_dir();
     g_array_append_val(config->link_search_paths, cwd);
@@ -259,6 +269,7 @@ void print_help(void) {
         "    --print-ir            print resulting LLVM-IR to a file",
         "    --mode=[app|lib]      set the compilation mode to either application or library",
         "    --output=name         name of output files without extension",
+        "    --driver              set binary driver to use",
         "    --link-paths=[paths,] set a list of directories to for libraries in",
         "    --all-fatal-warnings  treat all warnings as errors",
         "    --lld-fatal-warnings  treat linker warnings as errors",
@@ -389,6 +400,7 @@ static int parse_target(const ProjectConfig *config, const toml_table_t *target_
     get_bool(&target_config->print_asm, target_table, "print_asm");
     get_bool(&target_config->print_ir, target_table, "print_ir");
 
+    get_str(&target_config->driver, target_table, "driver");
     get_str(&target_config->root_module, target_table, "root");
     get_str(&target_config->output_directory, target_table, "output");
     get_str(&target_config->archive_directory, target_table, "archive");
diff --git a/src/cfg/opt.h b/src/cfg/opt.h
index e80f91f..5699145 100644
--- a/src/cfg/opt.h
+++ b/src/cfg/opt.h
@@ -51,6 +51,8 @@ typedef struct TargetConfig_t {
     char* output_directory;
     // output directory for intermediate representations (LLVM-IR, Assembly, ...)
     char* archive_directory;
+    // binary driver for executable generation
+    char* driver;
     // mode of compilation
     TargetCompilationMode mode;
     // number between 1 and 3
diff --git a/src/link/driver.h b/src/link/driver.h
index f797778..9eba996 100644
--- a/src/link/driver.h
+++ b/src/link/driver.h
@@ -7,6 +7,8 @@
 
 #include <cfg/opt.h>
 
+#define DEFAULT_DRIVER "clang"
+
 //! @brief Function a binary driver used to link files
 typedef bool (*driver_link)(TargetLinkConfig*);
 
diff --git a/src/llvm/link/lld.c b/src/llvm/link/lld.c
index 012c924..5d596c2 100644
--- a/src/llvm/link/lld.c
+++ b/src/llvm/link/lld.c
@@ -46,7 +46,7 @@ TargetLinkConfig* lld_create_link_config(__attribute__((unused)) const Target* t
     config->fatal_warnings = target_config->lld_fatal_warnings;
     config->object_file_names = g_array_new(FALSE, FALSE, sizeof(char*));
     config->colorize = stdout_supports_ansi_esc();
-    config->driver = mem_strdup(MemoryNamespaceLld, "clang");
+    config->driver = target_config->driver;
 
     // append build object file
     char* basename = g_strjoin(".", target_config->name, "o", NULL);