From 2908a4cca54a1e241a8f5516d4454acf5c211d41 Mon Sep 17 00:00:00 2001
From: git-bruh <prathamIN@proton.me>
Date: Tue, 20 Jan 2026 00:20:02 +0530
Subject: [PATCH] fix: disable remote preprocessing if -imacros is passed

---
 client/arg.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/client/arg.cpp b/client/arg.cpp
index 8f685799..3aeaa12e 100644
--- a/client/arg.cpp
+++ b/client/arg.cpp
@@ -312,6 +312,7 @@ int analyse_argv(const char * const *argv, CompileJob &job, bool icerun, list<st
     bool wunused_macros = false;
     bool seen_arch = false;
     bool seen_pedantic = false;
+    bool seen_imacros = false;
     bool seen_march_native = false;
     bool seen_mcpu_native = false;
     bool seen_mtune_native = false;
@@ -554,6 +555,9 @@ int analyse_argv(const char * const *argv, CompileJob &job, bool icerun, list<st
                        || str_equal("-iwithprefixbefore", a)
                        || str_equal("--include-with-prefix-before", a)
                        || str_equal("-iwithsysroot", a)) {
+                if (str_equal("-imacros", a)) {
+                    seen_imacros = true;
+                }
                 args.append(a, Arg_Local);
 
                 assert( is_argument_with_space( a ));
@@ -888,6 +892,12 @@ int analyse_argv(const char * const *argv, CompileJob &job, bool icerun, list<st
         job.setBlockRewriteIncludes(true);
     }
 
+    // -imacros doesn't define any macros when used with remote preprocessing
+    if ( seen_imacros ) {
+        log_warning() << "argument -imacros, forcing local preprocessing" << endl;
+        job.setBlockRewriteIncludes(true);
+    }
+
     // -pedantic doesn't work with remote preprocessing, if extensions to a named standard
     // are allowed.  GCC allows GNU extensions by default, so let's check if a standard
     // other than eg gnu11 or gnu++14 was specified.