On Thu, Jul 4, 2013 at 3:12 PM, Igor Živković <[email protected] > wrote:
> On 07/04/2013 01:02 PM, Mykyta Iziumtsev wrote: > > > > I'm currently intensively working with libmad, and incidentally came > across > > libmad build instructions in BLFS/CLFS. There is a problem with x86-64 > > compilation which is not properly addressed. > > > > libmad -- is (considerably) old project (last commit around year 2004). > So, > > configure.ac grew old, and don't support x86-64. As a result, if you run > > ./configure on x86-64 system -- it will complete without errors, but then > > compilation will fail with gcc complaining about "-fforce-mem". This is > > because ./configure incorrectly "guesses" target triplet. > > > > In BLFS this issue is not addressed at all (if I get it correctly), and > in > > CLFS issue is addresses, but incorrectly. The later uses straight > approach > > -- remove "-fforce-mem". That will make libmad compile -- but at the > > expense of significant quality degradation. > > > > > > The proper fix is to update configure.ac (and configure.in, of course, > by > > running autoconf). This patch is "elaborated" from Ubuntu package: > > > > diff --git a/configure.ac b/configure.ac > > index 0541425..c7151b6 100644 > > --- a/configure.ac > > +++ b/configure.ac > > @@ -294,6 +230,7 @@ if test -z "$FPM" && test "$GCC" = yes > > then > > case "$host" in > > i?86-*) FPM="INTEL" ;; > > + x86_64*) FPM="64BIT" ;; > > arm*-*) FPM="ARM" ;; > > mips*-*) FPM="MIPS" ;; > > sparc*-*) FPM="SPARC" ;; > > The compilaton still fails after autoconf && ./configure if you don't > remove -fforce-mem. > Yes, I somehow overlooked that :( So compilation and sound quality not correlate with each other. optimize.diff<https://projects.archlinux.org/svntogit/packages.git/tree/trunk/optimize.diff?h=packages/libmad>from post by Armin addresses compilation issue. I have found that many distributions (except big ones, like Debian, Fedora) have issue with libmad x86_64 accuracy. I'm trying to convince author to adopt the patch and make a new release. Then, maybe issue will be fixed in more distros. > > -- > Igor Živković > http://www.slashtime.net/ > -- > http://linuxfromscratch.org/mailman/listinfo/blfs-support > FAQ: http://www.linuxfromscratch.org/blfs/faq.html > Unsubscribe: See the above information page >
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