From ff98d2c5c21ebad975f30174f393b4b3ca9f49de Mon Sep 17 00:00:00 2001
From: FeralChild64 <you@example.com>
Date: Sun, 27 Sep 2020 16:57:39 +0200
Subject: [PATCH] protected against distributing file with non-LGPL3 content

---
 src/basic/assets/str_nolgpl3_warn.s | 15 +++++++++++++++
 src/basic/init/initmsg_m65.s        | 13 -------------
 src/basic/init/initmsg_real.s       |  2 +-
 tools/release.cc                    | 13 ++++++++++++-
 4 files changed, 28 insertions(+), 15 deletions(-)
 create mode 100644 src/basic/assets/str_nolgpl3_warn.s

diff --git a/src/basic/assets/str_nolgpl3_warn.s b/src/basic/assets/str_nolgpl3_warn.s
new file mode 100644
index 00000000..88bf8fa9
--- /dev/null
+++ b/src/basic/assets/str_nolgpl3_warn.s
@@ -0,0 +1,15 @@
+;; #LAYOUT# M65 BASIC_1 #TAKE
+;; #LAYOUT# *   *       #IGNORE
+
+
+
+!ifdef HAS_NOLGPL3_WARN {
+
+str_nonlgpl3_warn:
+
+	!byte $0D, $0D, $0D, $0D
+	!pet "build contains non-lgpl3 code"
+	!byte $0D
+	!pet "  *** do not distribute ***"
+	!byte $0D, $0D, $00
+}
diff --git a/src/basic/init/initmsg_m65.s b/src/basic/init/initmsg_m65.s
index 40d9a782..f0fa4b64 100644
--- a/src/basic/init/initmsg_m65.s
+++ b/src/basic/init/initmsg_m65.s
@@ -108,16 +108,3 @@ INITMSG_revision:
 	lda #<rom_revision_basic_string
 	ldy #>rom_revision_basic_string
 	jmp STROUT
-
-
-
-!ifdef HAS_NOLGPL3_WARN {
-
-str_nonlgpl3_warn:
-
-	!byte $0D, $0D, $0D, $0D
-	!pet "build contains non-lgpl3 code"
-	!byte $0D
-	!pet "  *** do not distribute ***"
-	!byte $0D, $0D, $00
-}
diff --git a/src/basic/init/initmsg_real.s b/src/basic/init/initmsg_real.s
index 2fea1804..d3f53ac8 100644
--- a/src/basic/init/initmsg_real.s
+++ b/src/basic/init/initmsg_real.s
@@ -107,4 +107,4 @@ initmsg_real:
 
 }
 
-!ifdef HAS_NOLGPL3_WARN { !error "HAS_NOLGPL3_WARN not implemented" 
+!ifdef HAS_NOLGPL3_WARN { !error "HAS_NOLGPL3_WARN not implemented" }
diff --git a/tools/release.cc b/tools/release.cc
index 76fdd1e0..3bf52b82 100644
--- a/tools/release.cc
+++ b/tools/release.cc
@@ -70,7 +70,8 @@ const std::vector<uint8_t> STR_SNAPSHOT = { 0x28, 0x44, 0x45, 0x56, 0x45, 0x4C,
                                             0x00 };
 const std::vector<uint8_t> STR_DOSDATE  = { 0x4F, 0x58, 0x58, 0x58, 0x58, 0x58, 0x58, 0x58, 0x58 };
 
-const std::string STR_DEV = "DEV.";
+const std::string STR_DEV   = "DEV.";
+const std::string STR_BLOCK = "DO NOT DISTRIBUTE";
 
 //
 // Command and enviroment line settings
@@ -357,6 +358,16 @@ void ROMFile::readSrcFile()
 
     if (!srcFile.good()) ERROR(std::string("unable to read ROM file '") + srcFileNamePath + "'");
     srcFile.close();   
+
+    // Check if it is OK to distribute the file
+
+    for (size_t idx = 0; idx < srcFileContent.size() - STR_BLOCK.size(); idx++)
+    {
+        if (memcmp(&srcFileContent[idx], STR_BLOCK.c_str(), STR_BLOCK.size()) == 0)
+        {
+            ERROR(std::string("not allowed to distribute ROM file '") + srcFileNamePath + "'");
+        }
+    }
 }
 
 void ROMFile::readDstFile()