1369 2011-08-15 07:18:54 +0000 [Multilib] On-target gcc enhancement 2014-06-27 05:25:55 +0000 1 1 5 Infrastructure Bugzilla bugzilla unspecified Other x86_64 VERIFIED FIXED 703b70c98a86771a891b46382f3ee20c4ef93f39 Medium+ critical Future 1 ke.yu mhalstead alexandru.damian atul.singh008 bogdan.a.marinescu corneliux.stoicescu infras.bug.watcher Infras.watcher jessica.zhang meta.mr.watcher meta.watcher mihai.lindner msm-oss nitin.a.kamble radu.moisan richard.purdie sgw song.liu --- Unknown (Hard to categorize) -- No (bug/feature does not impact docs) oldest_to_newest 15465 0 ke.yu 2011-08-15 07:18:54 +0000 GCC has internal multilib handling code but it assumes a very specific rigid directory layout. The build system implementation of multilib layout is very generic and allows complete customisation of the library directories. 64bithack.patch is a partial solution to allow any custom directories to be passed into gcc and handled correctly. It forces gcc to use the base_libdir (which is the current +directory, "."). We need to do this for each multilib that is configured as we don't know which compiler options may be being passed into the compiler. Since we have a compiler per mulitlib at this point that isn't an issue. The one problem is the target compiler is only going to work for the default multlilib at this point. Ideally we'd figure out which multilibs were being enabled with which paths and be able to patch these entries with a complete set of correct paths but this we don't have such code at this point. This is something the target gcc recipe should do and override these platform defaults in its build config. 18056 1 nitin.a.kamble 2012-01-10 08:50:09 +0000 I am looking into this now. 18086 2 sgw 2012-01-11 15:21:12 +0000 *** Bug 1549 has been marked as a duplicate of this bug. *** 22125 3 nitin.a.kamble 2012-06-13 14:15:02 +0000 Here are my commits for this feature which I did for 1.2 release. I have ported the commits it to 1.3 in this branch, but they may not be working yet. http://git.yoctoproject.org/cgit/cgit.cgi/poky-contrib/log/?h=nitin/gcc-multilib-1.3 22128 4 nitin.a.kamble 2012-06-13 14:24:07 +0000 Bogdan, You can also work with Richard for this feature. 25056 5 nitin.a.kamble 2012-09-11 16:21:56 +0000 Bogdan, Radu, So what is the current status of this work now? The last I heard is that Bogdan rebased the previous code to gcc 4.7. but I did not see any code, or update after it. 25092 6 radu.moisan 2012-09-12 07:44:01 +0000 (In reply to comment #5) > Bogdan, Radu, > So what is the current status of this work now? The last I heard is that > Bogdan rebased the previous code to gcc 4.7. but I did not see any code, or > update after it. Bogdan switched to some other work, I'll be taking care of this, but for now I didn't had time to look over. I'll post updates soon as I'll start investigation (I'll probably need to gather some info anyway to get started with it). 25398 7 radu.moisan 2012-09-19 10:40:18 +0000 Agreed with Richard to move this to 1.4 27456 8 radu.moisan 2012-11-14 22:57:30 +0000 I will be takink care of this as soon as I finish with with systemd. My initial estimation is 10 days but this will probably change once I get into it and clean up my view over this feature. 29498 9 constantinx.musca 2013-02-04 15:19:08 +0000 Patch merged. (commit 703b70c98a86771a891b46382f3ee20c4ef93f39) Cheers, Constantin 31239 10 corneliux.stoicescu 2013-03-27 14:11:22 +0000 Hello, What should I add in local.conf in order to get a core-image-sato-sdk to test this? I added the following but got a "-sh: gcc: command not found" message: MACHINE = "qemux86-64" require conf/multilib.conf MULTILIBS = "multilib:lib32" DEFAULTTUNE_virtclass-multilib-lib32 = "x86" IMAGE_INSTALL_append = " lib32-gcc" NOTE: By adding the above lines in local.conf without the last one, I could not create 32 bit binaries on the x86-64 machine. Awaiting for input from Radu or Nitin. 31240 11 radu.moisan 2013-03-27 14:27:24 +0000 Constantin is the right person to ask. 31765 12 mihai.lindner 2013-04-09 13:51:17 +0000 Build Configuration: BB_VERSION = "1.17.1" BUILD_SYS = "x86_64-linux" NATIVELSBSTRING = "Unknown" TARGET_SYS = "x86_64-poky-linux" MACHINE = "qemux86-64" DISTRO = "poky" DISTRO_VERSION = "1.3+snapshot-20130409" TUNE_FEATURES = "m64" TARGET_FPU = "" meta meta-yocto meta-yocto-bsp = "master:02ae9b357676c904721d92a9c6f74ecc6b7a4476" Shell commands: root@qemux86-64:~# cat test.c #include <stdio.h> int main () { printf ("Hello World!\n"); } root@qemux86-64:~# gcc test.c -o test root@qemux86-64:~# file test test: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, BuildID[sha1]=af4a65fde9035710493b8dad3212f4095e660b9a, not stripped root@qemux86-64:~# gcc -m64 test.c -o test root@qemux86-64:~# file test test: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, BuildID[sha1]=af4a65fde9035710493b8dad3212f4095e660b9a, not stripped root@qemux86-64:~# gcc -m32 test.c -o test root@qemux86-64:~# file test test: ELF 32-bit LSB executable, Intel 80386, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.16, BuildID[sha1]=60066bf9f2ff17efcb7cb324df4c601bea0a57d1, not stripped 44219 13 atul.singh008 2014-06-27 05:25:55 +0000 Hi, I tried the above suggestion for multilib support on current head release of yocto for machine x86-64. But it only create lib64 folder. Also while compiling for m32 i am getting mention below: sysroots/i686-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64 -poky-linux/gcc/x86_64-poky-linux/4.9.0/ld: skipping incompatible /home/atulk/X86_multilib/sysroots /core2-64-poky-linux/usr/lib64/x86_64-poky-linux/4.9.0//libgcc.a when searching for -lgcc /home/atulk/X86_multilib/sysroots/i686-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64 -poky-linux/gcc/x86_64-poky-linux/4.9.0/ld: skipping incompatible /home/atulk/X86_multilib/sysroots /core2-64-poky-linux/usr/lib64/x86_64-poky-linux/4.9.0/libgcc.a when searching for -lgcc /home/atulk/X86_multilib/sysroots/i686-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64 -poky-linux/gcc/x86_64-poky-linux/4.9.0/ld: cannot find -lgcc Please help me with your valuable suggestion on the same. Thanks and regards, Atul