From fbc3b3618d43c1581fa98f98fff4fe899036a359 Mon Sep 17 00:00:00 2001
From: Eunseo Song <162149585+eunseo9311@users.noreply.github.com>
Date: Fri, 27 Mar 2026 00:52:21 +0900
Subject: [PATCH] Fix Apple clang PCH compile error with -o flag (#7251)
 (#7327)

Apple clang rejects `-o` when a precompiled header (.gch) is involved,
reporting "cannot specify -o when generating multiple output files".
Remove the unnecessary `-o $@` from the two PCH build rules; the
`%.o: %.cpp` pattern already implies the correct output name.
---
 docs/CONTRIBUTORS       | 1 +
 include/verilated.mk.in | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/docs/CONTRIBUTORS b/docs/CONTRIBUTORS
index ab4f4526b..89e5ca44c 100644
--- a/docs/CONTRIBUTORS
+++ b/docs/CONTRIBUTORS
@@ -60,6 +60,7 @@ Driss Hafdi
 Edgar E. Iglesias
 Eric Müller
 Eric Rippey
+Eunseo Song
 Ethan Sifferman
 Eyck Jentzsch
 Fabian Keßler-Schulz
diff --git a/include/verilated.mk.in b/include/verilated.mk.in
index 4e71a5ac1..68fb5db5b 100644
--- a/include/verilated.mk.in
+++ b/include/verilated.mk.in
@@ -280,10 +280,10 @@ ifneq ($(VM_DEFAULT_RULES),0)
 	$(OBJCACHE) $(CXX) $(OPT_FAST) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<
 
   $(VK_OBJS_FAST): %.o: %.cpp $(VK_PCH_H).fast.gch
-	$(OBJCACHE) $(CXX) $(OPT_FAST) $(CXXFLAGS) $(CPPFLAGS) $(VK_PCH_I_FAST) -c -o $@ $<
+	$(OBJCACHE) $(CXX) $(OPT_FAST) $(CXXFLAGS) $(CPPFLAGS) $(VK_PCH_I_FAST) -c $<
 
   $(VK_OBJS_SLOW): %.o: %.cpp $(VK_PCH_H).slow.gch
-	$(OBJCACHE) $(CXX) $(OPT_SLOW) $(CXXFLAGS) $(CPPFLAGS) $(VK_PCH_I_SLOW) -c -o $@ $<
+	$(OBJCACHE) $(CXX) $(OPT_SLOW) $(CXXFLAGS) $(CPPFLAGS) $(VK_PCH_I_SLOW) -c $<
 
   $(VK_GLOBAL_OBJS): %.o: %.cpp
 	$(OBJCACHE) $(CXX) $(OPT_GLOBAL) $(CXXFLAGS) $(CPPFLAGS) -c -o $@ $<