On Thu, 04 Jan 2018 14:29:42 +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, Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
