Bugs item #2021648, was opened at 2008-07-18 19:05 Message generated for change (Comment added) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=478070&aid=2021648...
Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: externals Group: None
Status: Pending Resolution: Accepted
Priority: 5 Private: No Submitted By: Federico Ferri (federico__) Assigned to: IOhannes m zmlnig (zmoelnig) Summary: zexy: configure.ac: $LDFLAGS in wrong place
Initial Comment: line 425 of configure.ac:
LFLAGS=${LDFLAGS}
is wrong. LDFLAGS are passed to gcc, not to ld.
I have in my LDFLAGS -Wl,-O1, which make ld fail. ld should only see the -O1 option
make output:
i686-pc-linux-gnu-ld -shared --export-dynamic -Wl,-O1 -o zexy.pd_linux *.o -lm -lc i686-pc-linux-gnu-ld: unrecognized option '-Wl,-O1' i686-pc-linux-gnu-ld: use the --help option for usage information make: *** [zexy] Error 1
please fix. (you can fix it by making an empty LFLAGS)
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Comment By: IOhannes m zmlnig (zmoelnig)
Date: 2008-07-23 09:10
Message: Logged In: YES user_id=564396 Originator: NO
good that you have found a solution.
2 remarks: - i kind of started to migrate the build-system from zexy/src/ to zexy/build/autoconf/ and incorporated your changes there. i suggest you just use this build-system from now on.
- i am not so sure whether using $(CC) as linker is truely portable; not every compiler might be able to implicitely run a linker, like gcc.
if you feel unhappy with this solution (using build/autoconf/), just re-open this ticket.
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Comment By: Federico Ferri (federico__) Date: 2008-07-22 21:47
Message: Logged In: YES user_id=1628983 Originator: YES
so, finally, I managed to fix your problem. replace $(LD) with $(CC) in Makefile and you are okay, there's no need of transforming variables or such. here's the one-liner fix I use in the Gentoo Ebuild:
sed -i -e 's/$(LD)/$(CC)/g' Makefile
you can always check here [1] how do I build externals. please notify me when you commit this little fix, so I remove the fix from the ebuild.
[1] http://pd-overlay.svn.sourceforge.net/viewvc/pd-overlay/pd-overlay/media-plu... (actually Sf's ViewVC is down)
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Comment By: Federico Ferri (federico__) Date: 2008-07-21 19:08
Message: Logged In: YES user_id=1628983 Originator: YES
hi IOhannes, I'm not sure what you should do; the 'GNU Coding Standards' document doesn't make mention of this (I generally look-up there things when I'm in doubt).
As I explained, the $(LDFLAGS) has to be passed to gcc, not to ld. For example, if you have -Wl,--as-needed in $LDFLAGS, the ld program only wants to see --as-needed.
There are two options:
1) [PROBABLY BAD] if you want to pass $LDFLAGS directly to linker, you have to turn the "-Wl,--flag1,--flag2" option into "--flag1 --flag2". I don't see a handy way to do it.
2) use gcc to do the linking. please read this excerpt from `man ld`:
------------------------------------------------------------------------------ Note---if the linker is being invoked indirectly, via a compiler driver (e.g. gcc) then all the linker command line options should be prefixed by -Wl, (or whatever is appropriate for the particular compiler driver) like this:
gcc -Wl,--startgroup foo.o bar.o -Wl,--endgroup
This is important, because otherwise the compiler driver program may silently drop the linker options, resulting in a bad link. ------------------------------------------------------------------------------
also, beware that using a LFLAGS in Makefile could give you weird results, since LFLAGS are the Lex-flags (that's not your case, since configure is just a shell script, but just to inform you ;)
so, in my opinion, you should use $(CC) to link objects. now I'm asking to some people on IRC but still didn't get a reply. if I'll eventually get a better answer I'll add a comment here.
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Comment By: IOhannes m zmlnig (zmoelnig) Date: 2008-07-21 15:29
Message: Logged In: YES user_id=564396 Originator: NO
do you have any reference tpo the correct use of LFLAGS vs LDFLAGS?
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