[alsa-devel] Compiling alsa-lib fails with lto
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
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
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"?
In any case, libasound is built before "make" halts and is 29kb smaller (stripped) with lto :)
John
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
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?
Oops - spoke too soon :(
Using libasound from alsa-lib-1.1.5 compiled with lto, but without your update from alsa git:
$ speaker-test -Ddefault:1 -c2 -t wav -l1
speaker-test 1.1.5
Playback device is default:1 Stream parameters are 48000Hz, S16_LE, 2 channels WAV file(s) Rate set to 48000Hz (requested 48000Hz) speaker-test: relocation error: speaker-test: symbol snd_pcm_hw_params_get_buffer_size_min, version ALSA_0.9.0rc4 not defined in file libasound.so.2 with link time reference
Dne 5.1.2018 v 12:00 John Frankish napsal(a):
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?
Oops - spoke too soon :(
Using libasound from alsa-lib-1.1.5 compiled with lto, but without your update from alsa git:
$ speaker-test -Ddefault:1 -c2 -t wav -l1
speaker-test 1.1.5
Playback device is default:1 Stream parameters are 48000Hz, S16_LE, 2 channels WAV file(s) Rate set to 48000Hz (requested 48000Hz) speaker-test: relocation error: speaker-test: symbol snd_pcm_hw_params_get_buffer_size_min, version ALSA_0.9.0rc4 not defined in file libasound.so.2 with link time reference
It looks like we should use 'externally_visible' flag for the versioned symbols, too. It was introduces for '-fwhole-program' but it seems that '-flto' sees this flag, too.
Jaroslav
participants (3)
-
Jaroslav Kysela -
John Frankish -
Takashi Iwai