From a667b53fcb2cb3cda14f67a47286a4b4198f704d Mon Sep 17 00:00:00 2001
From: "Avi Halachmi (:avih)" <avihpit@yahoo.com>
Date: Tue, 14 Jul 2026 09:22:07 +0300
Subject: [PATCH] win32: allow self-host with tcc 0.9.27 - part 1 of 2

Commit 03d58b0 ("arm64-win32 support : runtime", 2026-04-04) added
IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE to winnt.h, and it was later
used in tccpe.c, but older tcc like 0.9.27 don't have it.

So define IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE is missing.
---
 tccpe.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tccpe.c b/tccpe.c
index 2148517d..6f622dd3 100644
--- a/tccpe.c
+++ b/tccpe.c
@@ -292,6 +292,11 @@ typedef struct _IMAGE_BASE_RELOCATION {
 #endif /* ndef IMAGE_NT_SIGNATURE */
 /* ----------------------------------------------------------- */
 
+#ifndef IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE
+  /* allow self-host build with tcc 0.97 - doesn't have this in winnt.h */
+  #define IMAGE_DLLCHARACTERISTICS_DYNAMIC_BASE 0x0040
+#endif
+
 #pragma pack(push, 1)
 struct pe_header
 {