From 05e70f4b0904604353af176a7e46a1efa06f6152 Mon Sep 17 00:00:00 2001
From: Walter Bright <walter@walterbright.com>
Date: Sun, 2 Jun 2024 22:49:15 -0700
Subject: [PATCH] backend_init() gets const ref parameters

---
 compiler/src/dmd/dmsc.d   | 17 ++++++++++-------
 compiler/src/dmd/main.d   |  2 +-
 compiler/src/dmd/mars.d   |  8 ++++----
 compiler/src/dmd/target.d |  4 ++--
 4 files changed, 17 insertions(+), 14 deletions(-)

diff --git a/compiler/src/dmd/dmsc.d b/compiler/src/dmd/dmsc.d
index af037bb19a23..d7abe8f84810 100644
--- a/compiler/src/dmd/dmsc.d
+++ b/compiler/src/dmd/dmsc.d
@@ -32,19 +32,22 @@ import dmd.backend.type;
 import dmd.backend.backconfig;
 
 /**************************************
- * Initialize config variables.
+ * Initialize backend config variables.
+ * Params:
+ *      params = command line parameters
+ *      driverParams = more command line parameters
+ *      target = target machine info
  */
 
-void backend_init()
+void backend_init(const ref Param params, const ref DMDparams driverParams, const ref Target target)
 {
-    //printf("out_config_init()\n");
-    Param *params = &global.params;
+    //printf("backend_init()\n");
     exefmt_t exfmt;
     switch (target.os)
     {
-        case Target.OS.Windows: exfmt = target.isX86_64 ? EX_WIN64 : EX_WIN32;       break;
-        case Target.OS.linux:   exfmt = target.isX86_64 ? EX_LINUX64 : EX_LINUX;     break;
-        case Target.OS.OSX:     exfmt = target.isX86_64 ? EX_OSX64 : EX_OSX;         break;
+        case Target.OS.Windows: exfmt = target.isX86_64 ? EX_WIN64     : EX_WIN32;   break;
+        case Target.OS.linux:   exfmt = target.isX86_64 ? EX_LINUX64   : EX_LINUX;   break;
+        case Target.OS.OSX:     exfmt = target.isX86_64 ? EX_OSX64     : EX_OSX;     break;
         case Target.OS.FreeBSD: exfmt = target.isX86_64 ? EX_FREEBSD64 : EX_FREEBSD; break;
         case Target.OS.OpenBSD: exfmt = target.isX86_64 ? EX_OPENBSD64 : EX_OPENBSD; break;
         case Target.OS.Solaris: exfmt = target.isX86_64 ? EX_SOLARIS64 : EX_SOLARIS; break;
diff --git a/compiler/src/dmd/main.d b/compiler/src/dmd/main.d
index 224b2c380908..a5e53ee18bd6 100644
--- a/compiler/src/dmd/main.d
+++ b/compiler/src/dmd/main.d
@@ -522,7 +522,7 @@ private int tryMain(size_t argc, const(char)** argv, ref Param params)
     if (global.errors)
         removeHdrFilesAndFail(params, modules);
 
-    backend_init();
+    backend_init(params, driverParams, target);
 
     // Do semantic analysis
     foreach (m; modules)
diff --git a/compiler/src/dmd/mars.d b/compiler/src/dmd/mars.d
index 891169472e3d..6a6ede5f97f4 100644
--- a/compiler/src/dmd/mars.d
+++ b/compiler/src/dmd/mars.d
@@ -344,9 +344,9 @@ const(char)[] parse_conf_arg(Strings* args)
  * Note that if `-defaultlib=` or `-debuglib=` was used,
  * we don't override that either.
  * Params:
- *	target = parameters set by user
- *	defaultlibname = set based on `target`
- *	debuglibname = set based on `target`
+ *      target = parameters set by user
+ *      defaultlibname = set based on `target`
+ *      debuglibname = set based on `target`
  */
 pure @safe
 void setDefaultLibraries(const ref Target target, ref const(char)[] defaultlibname, ref const(char)[] debuglibname)
@@ -456,7 +456,7 @@ extern(C) void flushMixins()
  *      params = set to result of parsing `arguments`
  *      files = set to files pulled from `arguments`
  *      target = more things set to result of parsing `arguments`
- *	driverParams = even more things to set
+ *      driverParams = even more things to set
  * Returns:
  *      true if errors in command line
  */
diff --git a/compiler/src/dmd/target.d b/compiler/src/dmd/target.d
index e53291f8ec9f..c471b7a09eb0 100644
--- a/compiler/src/dmd/target.d
+++ b/compiler/src/dmd/target.d
@@ -406,7 +406,7 @@ extern (C++) struct Target
     extern (C++) void _init(ref const Param params)
     {
         // isX86_64 and cpu are initialized in parseCommandLine
-	isX86 = !isX86_64;
+        isX86 = !isX86_64;
 
         this.params = &params;
 
@@ -499,7 +499,7 @@ extern (C++) struct Target
     /**
      Determine the object format to be used
      */
-    extern(D) Target.ObjectFormat objectFormat() @safe
+    extern(D) Target.ObjectFormat objectFormat() const @safe
     {
         if (os == Target.OS.OSX)
             return Target.ObjectFormat.macho;