[FFmpeg-devel] [PATCH] ffbuild: use response files only if ar accepts them

[Gyan Doshi]

On 2025-03-17 09:44 pm, Zhao Zhili wrote:
>
>> On Mar 17, 2025, at 23:16, Gyan Doshi <ffmpeg at gyani.pro> wrote:
>>
>> This is to not break linking with toolchains that don't support reading
>> args from a 'response file'.
>> ---
>> I've assumed that ld on a system will have same support as ar.
>>
>> configure           | 7 +++++++
>> ffbuild/library.mak | 8 ++++++++
>> 2 files changed, 15 insertions(+)
>>
>> diff --git a/configure b/configure
>> index f6964c4ee1..d84e32196d 100755
>> --- a/configure
>> +++ b/configure
>> @@ -5230,6 +5230,12 @@ else
>>      ar_o='$@'
>> fi
>>
>> +if $ar 2>&1 | grep -qi  "@.*file"; then
>> +    ar_objs="true"
>> +else
>> +    ar_objs=""
>> +fi
> Works for me.

Good. Let's wait for another report.

Regards,
Gyan



>
>> +
>> add_cflags $extra_cflags
>> add_cxxflags $extra_cxxflags
>> add_objcflags $extra_objcflags
>> @@ -8133,6 +8139,7 @@ DEPX86ASM=$x86asmexe
>> DEPX86ASMFLAGS=\$(X86ASMFLAGS)
>> AR=$ar
>> ARFLAGS=$arflags
>> +AR_OBJS=$ar_objs
>> AR_O=$ar_o
>> AR_CMD=$ar
>> NM_CMD=$nm
>> diff --git a/ffbuild/library.mak b/ffbuild/library.mak
>> index 72e3872157..7e1871b74c 100644
>> --- a/ffbuild/library.mak
>> +++ b/ffbuild/library.mak
>> @@ -35,8 +35,12 @@ OBJS += $(SHLIBOBJS)
>> endif
>> $(SUBDIR)$(LIBNAME): $(OBJS) $(STLIBOBJS)
>> 	$(RM) $@
>> +ifeq ($(AR_OBJS),true)
>> 	$(Q)echo $^ > $@.objs
>> 	$(AR) $(ARFLAGS) $(AR_O) @$@.objs
>> +else
>> +	$(AR) $(ARFLAGS) $(AR_O) $^
>> +endif
>> 	$(RANLIB) $@
>> 	-$(RM) $@.objs
>>
>> @@ -68,8 +72,12 @@ $(SUBDIR)$(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 $$(filter %.o,$$^) > $$@.objs
>> 	$$(LD) $(SHFLAGS) $(LDFLAGS) $(LDSOFLAGS) $$(LD_O) @$$@.objs $(FFEXTRALIBS)
>> +else
>> +	$$(LD) $(SHFLAGS) $(LDFLAGS) $(LDSOFLAGS) $$(LD_O) $$(filter %.o,$$^) $(FFEXTRALIBS)
>> +endif
>> 	$(SLIB_EXTRA_CMD)
>> 	-$(RM) $$@.objs
>>
>> -- 
>> 2.46.1
>>
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