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* [Bug target/14895] New: soft float flags missings from libgcc.a (and others) @ 2004-04-08 19:55 droopycom at yahoo dot com 2004-04-08 23:25 ` [Bug target/14895] " pinskia at gcc dot gnu dot org ` (3 more replies) 0 siblings, 4 replies; 5+ messages in thread From: droopycom at yahoo dot com @ 2004-04-08 19:55 UTC (permalink / raw) To: gcc-bugs Hi, I experienced this trying to compile a uClinux arm kernel with arm-elf-gcc 3.3.3. The kernel link will complain that libgcc.a uses hard float while linux kernel uses soft-floats. arm-elf-objdump -p shows that the linux object files have the SOFTFLOAT flag while libgcc doesnt. Linux CFLAGS include "-msoft- float", but I believe libgcc was compiled without this flag but the default is soft float anyway. The problem is that gas doesnt receive the correct flags when called. The following simple patch to gcc solved my particular issue: ### soft float patch --- gcc-3.3-branch/gcc/config/arm/elf.h 2004-03-30 12:43:45.000000000 -0800 +++ gcc-3.3.3-fg/gcc/config/arm/elf.h 2004-04-07 21:42:05.000000000 -0700 @@ -46,7 +46,7 @@ Boston, MA 02111-1307, USA. */ #ifndef SUBTARGET_ASM_FLOAT_SPEC #define SUBTARGET_ASM_FLOAT_SPEC "\ -%{mapcs-float:-mfloat} %{msoft-float:-mno-fpu}" +%{mapcs-float:-mfloat} %{!mhard-float:-mfpu=softfpa} %{mhard-float:-mfpu=fpa}" #endif #ifndef ASM_SPEC ##### End patch However I found a more complete patch and analysis of the problem by Nick Clifton in the archives: http://gcc.gnu.org/ml/gcc-patches/2003-04/msg00593.html Apparently, theres no bug filed for this, nor the patch made it into the 3.3 branch. I also believe that one work around would be to remove the -msoft-float from the linux CFLAGS, although I patched my gcc first so I didnt really test. Thanks -- F.G. -- Summary: soft float flags missings from libgcc.a (and others) Product: gcc Version: 3.3.3 Status: UNCONFIRMED Severity: normal Priority: P2 Component: target AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: droopycom at yahoo dot com CC: gcc-bugs at gcc dot gnu dot org GCC build triplet: all GCC host triplet: all GCC target triplet: arm-elf http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14895 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/14895] soft float flags missings from libgcc.a (and others) 2004-04-08 19:55 [Bug target/14895] New: soft float flags missings from libgcc.a (and others) droopycom at yahoo dot com @ 2004-04-08 23:25 ` pinskia at gcc dot gnu dot org 2004-04-18 2:24 ` droopycom at yahoo dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-04-08 23:25 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-04-08 23:25 ------- Fixed in 3.5.0 (the current mainline) and on the csl-arm-branch which is based on 3.4.0 by: Merge from csl-arm-branch. 2004-01-30 Paul Brook <paul@codesourcery.com> ..... -- What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED Target Milestone|--- |3.5.0 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14895 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/14895] soft float flags missings from libgcc.a (and others) 2004-04-08 19:55 [Bug target/14895] New: soft float flags missings from libgcc.a (and others) droopycom at yahoo dot com 2004-04-08 23:25 ` [Bug target/14895] " pinskia at gcc dot gnu dot org @ 2004-04-18 2:24 ` droopycom at yahoo dot com 2004-04-18 3:21 ` pinskia at gcc dot gnu dot org 2004-06-18 21:28 ` droopycom at yahoo dot com 3 siblings, 0 replies; 5+ messages in thread From: droopycom at yahoo dot com @ 2004-04-18 2:24 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From droopycom at yahoo dot com 2004-04-17 23:43 ------- Is there any chance this could be fixed in 3.3.x or 3.4 branches ? Thanks -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14895 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/14895] soft float flags missings from libgcc.a (and others) 2004-04-08 19:55 [Bug target/14895] New: soft float flags missings from libgcc.a (and others) droopycom at yahoo dot com 2004-04-08 23:25 ` [Bug target/14895] " pinskia at gcc dot gnu dot org 2004-04-18 2:24 ` droopycom at yahoo dot com @ 2004-04-18 3:21 ` pinskia at gcc dot gnu dot org 2004-06-18 21:28 ` droopycom at yahoo dot com 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2004-04-18 3:21 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From pinskia at gcc dot gnu dot org 2004-04-18 02:24 ------- Most likely not as this is a merge in from a branch, just use the branch for a compiler based on 3.4.0 which is stable, codesourcery is the ones doing the branch and supports ARM in this case. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14895 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/14895] soft float flags missings from libgcc.a (and others) 2004-04-08 19:55 [Bug target/14895] New: soft float flags missings from libgcc.a (and others) droopycom at yahoo dot com ` (2 preceding siblings ...) 2004-04-18 3:21 ` pinskia at gcc dot gnu dot org @ 2004-06-18 21:28 ` droopycom at yahoo dot com 3 siblings, 0 replies; 5+ messages in thread From: droopycom at yahoo dot com @ 2004-06-18 21:28 UTC (permalink / raw) To: gcc-bugs ------- Additional Comments From droopycom at yahoo dot com 2004-06-18 21:28 ------- Just for the record: The GCC 3.4.0 release has this issue. -- Thanks -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=14895 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2004-06-18 21:28 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2004-04-08 19:55 [Bug target/14895] New: soft float flags missings from libgcc.a (and others) droopycom at yahoo dot com 2004-04-08 23:25 ` [Bug target/14895] " pinskia at gcc dot gnu dot org 2004-04-18 2:24 ` droopycom at yahoo dot com 2004-04-18 3:21 ` pinskia at gcc dot gnu dot org 2004-06-18 21:28 ` droopycom at yahoo dot com
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