On Fri, 05 Jan 2018 07:18:36 +0100, John Frankish wrote: > > > > Using gcc-7.2.0 and alsa-lib-1.1.5 > > > > > > Is there a way to compile alsa-lib with lto (the method below works with alsa-plugins and alsa-utils)? > > > > > > Compiling alsa-lib like this works fine: > > > > > > CC="gcc -mtune=generic -Os -pipe" CXX="g++ -mtune=generic -Os -pipe > > > -fno-exceptions -fno-rtti" ./configure --prefix=/usr/local > > > --disable-static --localstatedir=/var > > > --with-configdir=/usr/local/etc/alsa > > > > > > ..but compiling with lto like this fails as per below: > > > > > > CC=" gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe" CXX="g++ > > > -flto -fuse-linker-plugin -mtune=generic -Os -pipe -fno-exceptions > > > -fno-rtti" ./configure --prefix=/usr/local --disable-static > > > --localstatedir=/var --with-configdir=/usr/local/etc/alsa > > > > > > libtool: link: gcc -flto -fuse-linker-plugin -mtune=generic -Os -pipe > > > -o .libs/aserver aserver.o ../src/.libs/libasound.so -lm -ldl > > > -lpthread -lrt > > > /tmp/ccoTf6DH.ltrans0.ltrans.o: In function `pcm_shm_cmd': > > > <artificial>:(.text+0xe7a): undefined reference to `snd_pcm_forward' > > > ../src/.libs/libasound.so: undefined reference to `snd_timer_params_set_filter' > > > ../src/.libs/libasound.so: undefined reference to `snd_ctl_elem_info_get_dimension' > > > ../src/.libs/libasound.so: undefined reference to `snd_ctl_elem_info_get_dimensions' > > > collect2: error: ld returned 1 exit status > > > make[1]: *** [Makefile:333: aserver] Error 1 > > > make[1]: Leaving directory '/usr/src/alsa-lib-1.1.5/aserver' > > > make: *** [Makefile:338: all-recursive] Error 1 Command exited with > > > non-zero status 2 > > > > That's interesting. These are basically fallouts of the internal function calls, > > and they should have been called with INTERNAL() wrapper for covering > > the versioned symbols. > > > > I fixed the latest git tree, but still something doesn't work with linkage > > in aserver. I guess Makefile.am in aserver needs to be fixed somehow, > > but I leave it as is for now, as you can work around it by disabling via the > > configure option. > > > Thanks - I'm not sure though what you mean by "configure option" - there is no "--disable-aserver"? It can be done by specifying --with-pcm-plugins without shm. But it'd be good to have --disable-aserver option for the easiness (or at best fix the aserver build :) > In any case, libasound is built before "make" halts and is 29kb smaller (stripped) with lto :) And does everything still work, hopefully? Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
