Re: Confusion on: all: all-yes

[Budi]

Sorry
Kaz Kylheku is correct, it's time to unveil everything blatantly
Download: wget https://ffmpeg.org/releases/ffmpeg-snapshot.tar.bz2

Then Imho this is the most complex, complicated Makefile I've ever
found, known and examined.

On 11/18/20, Kaz Kylheku (gmake) <729-670-0061@kylheku.com> wrote:
> On 2020-11-17 14:40, Budi wrote:
>> not found on included files, please help me out explain of the attached
>> one
>
> Hi Budi,
>
> I found it here:
>
> http://git.videolan.org/?p=ffmpeg.git;a=tree
>
> You could just have pointed everyone to that!
>
> Grep is disabled on that giweb, but in ffbuild/library.mak, I manually
> found these lines:
>
>    14 all-$(CONFIG_STATIC): $(SUBDIR)$(LIBNAME)
> $(SUBDIR)lib$(FULLNAME).pc
>    15 all-$(CONFIG_SHARED): $(SUBDIR)$(SLIBNAME)
> $(SUBDIR)lib$(FULLNAME).pc
>
> and
>
>    27 install-libs-$(CONFIG_STATIC): install-lib$(NAME)-static
>    28 install-libs-$(CONFIG_SHARED): install-lib$(NAME)-shared
>
> These are what make the all-yes and install-libs-yes targets work. The
> idea
> seems to be that either CONFIG_STATIC is "yes", and CONFIG_SHARED is
> something
> else (likely blank), or else vice versa. So one of these two sets of
> rules
> becomes all-yes and install-libs-yes, hooking it into the dependency
> tree,
> and he other becomes a dead/unused branch.
>
> Thus the correct "flavor" of the rule is selected based on the static or
> shared
> configuration.
>