From 3895e252f90c38e835fc2b64185940f4e4d6f4b3 Mon Sep 17 00:00:00 2001
From: jacob <jacob@cagori.com>
Date: Wed, 18 Jun 2025 15:08:53 -0500
Subject: [PATCH] retrieve tracy path from environment variable during build

---
 build.c      | 13 ++++++++++++-
 src/arena.h  |  7 +++++--
 src/common.h |  2 +-
 3 files changed, 18 insertions(+), 4 deletions(-)

diff --git a/build.c b/build.c
index fadd0167..05e2dcb1 100644
--- a/build.c
+++ b/build.c
@@ -327,6 +327,10 @@ void OnBuild(StringList cli_args)
      * Read args
      * ========================== */
 
+    String tracy_env_var_name = Lit("TRACY_SRC_PATH");
+    String tracy_src_dir_path = OS_GetEnvVar(&perm, tracy_env_var_name);
+    String tracy_public_dir_path = StringF(&perm, Lit("%F%F"), FmtStr(tracy_src_dir_path), FmtStr(Lit("/public")));
+    String tracy_include_path = StringF(&perm, Lit("%F%F"), FmtStr(tracy_public_dir_path), FmtStr(Lit("/tracy/TracyC.h")));
     {
         typedef enum ArgState {
             ArgState_None,
@@ -583,6 +587,13 @@ void OnBuild(StringList cli_args)
             }
             StringListAppend(&perm, &compile_args, Lit("-DPROFILING=1"));
 
+            /* Tracy include path */
+            if (tracy_src_dir_path.len == 0 || !OS_DirExists(tracy_src_dir_path)) {
+                Error(StringF(&perm, Lit("Profiling is enabled but tracy directory \"%F\" does not exist (set by environment variable \"%F\")"), FmtStr(tracy_src_dir_path), FmtStr(tracy_env_var_name)));
+                OS_Exit(1);
+            }
+            StringListAppend(&perm, &compile_args, StringF(&perm, Lit("-DTRACY_INCLUDE_PATH=\"%F\""), FmtStr(tracy_include_path)));
+
             /* Tracy flags */
             StringListAppend(&perm, &compile_args, Lit("-DTRACY_ENABLE=1"));
             if (!arg_profiler_sampling) {
@@ -836,7 +847,7 @@ void OnBuild(StringList cli_args)
             D_TagList src_files = D_GetDirContents(&perm, src_dir, false);
 
             if (arg_profiling) {
-                D_Tag tracy_src_dir = D_TagFromPath(&perm, Lit("src/third_party/tracy"), D_TagKind_Dir);
+                D_Tag tracy_src_dir = D_TagFromPath(&perm, tracy_public_dir_path, D_TagKind_Dir);
                 D_TagList tracy_src_files = D_GetDirContents(&perm, tracy_src_dir, true);
                 for (D_TagListNode *n = tracy_src_files.first; n; n = n->next) {
                     D_TagListAppend(&perm, &src_files, n->tag);
diff --git a/src/arena.h b/src/arena.h
index c5e97514..62993e5a 100644
--- a/src/arena.h
+++ b/src/arena.h
@@ -15,8 +15,6 @@
 #define arena_pop(a, type, dst) arena_pop_struct((a), sizeof(type), dst)
 #define arena_pop_array(a, type, n, dst) arena_pop_struct((a), sizeof(type) * (n), dst)
 
-#define arena_base(a) ((u8 *)(a) + ARENA_HEADER_SIZE)
-
 /* Returns a pointer to where the next allocation would be (at alignment of type).
  * Equivalent to arena_push but without actually allocating anything or modifying the arena. */
 #define arena_push_dry(a, type) (type *)(_arena_push_dry((a), alignof(type)))
@@ -38,6 +36,11 @@ void arena_decommit_unused_blocks(struct arena *arena);
 void arena_set_readonly(struct arena *arena);
 void arena_set_readwrite(struct arena *arena);
 
+INLINE u8 *arena_base(struct arena *arena)
+{
+    return (u8 *)arena + ARENA_HEADER_SIZE;
+}
+
 INLINE void *arena_push_bytes(struct arena *arena, u64 size, u64 align)
 {
     void *p = arena_push_bytes_no_zero(arena, size, align);
diff --git a/src/common.h b/src/common.h
index c50e4a39..c0cb4e4b 100644
--- a/src/common.h
+++ b/src/common.h
@@ -632,7 +632,7 @@ INLINE f64 clamp_f64(f64 v, f64 min, f64 max) { return v < min ? min : v > max ?
 
 #if PROFILING
 
-#include "third_party/tracy/tracy/TracyC.h"
+#include STRINGIZE(TRACY_INCLUDE_PATH)
 
 #define PROFILING_CAPTURE_FRAME_IMAGE 1