From 3cba603e7c9ee4b137f71635a4e66868d88691c0 Mon Sep 17 00:00:00 2001
From: 0x221E <ozdemir.demir@protonmail.com>
Date: Sun, 18 Jan 2026 18:24:00 +0100
Subject: [PATCH] Fix: Build phase for C.

---
 src/build.c  | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 src/build.h  | 36 ++++++++++++++++++++++
 src/common.h | 12 ++++++++
 3 files changed, 135 insertions(+)
 create mode 100644 src/build.c
 create mode 100644 src/build.h
 create mode 100644 src/common.h

diff --git a/src/build.c b/src/build.c
new file mode 100644
index 0000000..0e495e9
--- /dev/null
+++ b/src/build.c
@@ -0,0 +1,87 @@
+#include "build.h"
+
+#include <stddef.h>
+#include <assert.h>
+
+#include "memory.h"
+#include "string.h"
+#include "discovery.h"
+#include "command.h"
+#include "io.h"
+#include "utils.h"
+
+// Only supports C and multiple files
+
+void build(BuildContext* bc)
+{
+  assert(bc != NULL);
+  assert(bc->sp != NULL);
+  
+  int sc = build_c_to_o(bc);
+  if(sc != 0) DIE("Compilation failed!");
+  link(bc);
+}
+
+void link(BuildContext* bc)
+{
+  assert(bc != NULL);
+
+  if(bc->obj_files == NULL) DIE("Linking process was triggered, however there are no object files.");
+
+  Command cmd;
+  cmd.a = bc->a;
+  cmd.app = bc->d->cc;
+
+  size_t len = bc->d->c_count + 2;
+  
+  const char** args = (const char**)arena_alloc(bc->a, sizeof(const char*) * len);
+
+  args[0] = bc->d->cc.buf;
+  
+  for(size_t i = 0; i < bc->d->c_count; i++)
+  {
+    args[i + 1] = bc->obj_files[i]->buf;
+  }
+
+  args[len - 1] = NULL;
+  cmd.args = args;
+
+  int status = command_run(&cmd);
+  if(status != 0)
+    DIE("Linking failed with status code: %d");
+
+  LOG_DEBUG("Linking completed!");
+}
+
+int build_c_to_o(BuildContext* bc)
+{
+  assert(bc != NULL);
+  if(bc->d->c_count == 0)
+    return 1;
+  
+  CommandOptions co;
+  co.a = bc->a;
+  co.sp = bc->sp;
+  co.bp = bc->build_profile;
+  co.c = bc->c;
+  co.app = bc->d->cc;
+
+  StringView* arr = (StringView*)arena_alloc(bc->a, sizeof(StringView) * 1);
+  co.files = arr;
+
+  StringView** obj_files = (StringView**)arena_alloc(bc->a, sizeof(StringView*) * bc->d->c_count);
+  bc->obj_files = obj_files;
+  
+  for(size_t i = 0; i < bc->d->c_count; i++)
+  {
+    co.files[0] = bc->d->c_files[i]->path;
+    Command cmd = command_create_f_to_o(&co);
+    int status = command_run(&cmd);
+    if(status != 0)
+      DIE("Failed to compile %s, compiler exited with status code: %d", bc->d->c_files[i]->path.buf, status);
+    bc->obj_files[i] = &bc->d->c_files[i]->path;
+    LOG_DEBUG("Compiling %s", bc->d->c_files[i]->path.buf);
+    
+  }
+  return 0;
+}
diff --git a/src/build.h b/src/build.h
new file mode 100644
index 0000000..360de4f
--- /dev/null
+++ b/src/build.h
@@ -0,0 +1,36 @@
+#ifndef BUILD_H
+#define BUILD_H
+
+#include "common.h"
+
+typedef struct Configuration Configuration;
+typedef struct Discovery Discovery;
+typedef struct Arena Arena;
+typedef struct StringPool StringPool;
+typedef struct StringView StringView;
+typedef struct Command Command;
+
+struct BuildContext
+{
+  // Memory
+  Arena* a;
+  StringPool* sp;
+
+  // Build Params
+  enum BuildProfile build_profile;
+  Configuration* c;
+  Discovery* d;
+  
+  StringView** obj_files;
+};
+
+typedef enum BuildProfile BuildProfile;
+typedef struct BuildContext BuildContext;
+
+void build(BuildContext* bc);
+
+void link(BuildContext* bc);
+
+int build_c_to_o(BuildContext* bc);
+
+#endif
diff --git a/src/common.h b/src/common.h
new file mode 100644
index 0000000..4b060e1
--- /dev/null
+++ b/src/common.h
@@ -0,0 +1,12 @@
+#ifndef COMMON_H
+#define COMMON_H
+
+enum BuildProfile
+{
+  B_DEBUG,
+  B_PROD
+};
+
+typedef enum BuildProfile BuildProfile;
+
+#endif