[FFmpeg-devel] [PATCH 1/2] ffbuild: compose linker response files in a loop

From: Gyan Doshi <ffmpeg@gyani.pro>
To: ffmpeg-devel@ffmpeg.org
Subject: [FFmpeg-devel] [PATCH 1/2] ffbuild: compose linker response files in a loop
Date: Fri, 21 Mar 2025 16:10:44 +0530
Message-ID: <20250321104136.54347-1-ffmpeg@gyani.pro> (raw)

Avoids echo failing due to the same ARG_MAX limit that prompted
response files to be used with the linker.
---
 ffbuild/library.mak | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/ffbuild/library.mak b/ffbuild/library.mak
index 7e1871b74c..15302852ec 100644
--- a/ffbuild/library.mak
+++ b/ffbuild/library.mak
@@ -36,7 +36,8 @@ endif
 $(SUBDIR)$(LIBNAME): $(OBJS) $(STLIBOBJS)
 	$(RM) $@
 ifeq ($(AR_OBJS),true)
-	$(Q)echo $^ > $@.objs
+	-$(RM) $@.objs
+	$(Q)$(foreach ARG,$^,echo -n "$(ARG) " >> $@.objs;)
 	$(AR) $(ARFLAGS) $(AR_O) @$@.objs
 else
 	$(AR) $(ARFLAGS) $(AR_O) $^
@@ -73,7 +74,9 @@ $(SUBDIR)$(SLIBNAME): $(SUBDIR)$(SLIBNAME_WITH_MAJOR)
 $(SUBDIR)$(SLIBNAME_WITH_MAJOR): $(OBJS) $(SHLIBOBJS) $(SLIBOBJS) $(SUBDIR)lib$(NAME).ver
 	$(SLIB_CREATE_DEF_CMD)
 ifeq ($(AR_OBJS),true)
-	$(Q)echo $$(filter %.o,$$^) > $$@.objs
+	-$(RM) $$@.objs
+	$(Q)$(eval LDARGS=$$(filter %.o,$$^))
+	$(Q)$(foreach ARG,$$(LDARGS),echo -n "$(ARG) " >> $$@.objs;)
 	$$(LD) $(SHFLAGS) $(LDFLAGS) $(LDSOFLAGS) $$(LD_O) @$$@.objs $(FFEXTRALIBS)
 else
 	$$(LD) $(SHFLAGS) $(LDFLAGS) $(LDSOFLAGS) $$(LD_O) $$(filter %.o,$$^) $(FFEXTRALIBS)
-- 
2.46.1

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