| Summary: | Can't link in Linux object files on FreeBSD | ||
|---|---|---|---|
| Product: | binutils | Reporter: | H.J. Lu <hjl.tools> |
| Component: | ld | Assignee: | unassigned |
| Status: | RESOLVED FIXED | ||
| Severity: | normal | CC: | bug-binutils, uberlord |
| Priority: | P2 | ||
| Version: | 2.19 | ||
| Target Milestone: | --- | ||
| Host: | Target: | ||
| Build: | Last reconfirmed: | ||
| Attachments: | Link all sparc64 objects too | ||
A patch is posted at http://sourceware.org/ml/binutils/2007-04/msg00330.html An updated patch is at http://sourceware.org/ml/binutils/2007-04/msg00331.html An updated patch is posted at http://sourceware.org/ml/binutils/2007-08/msg00462.html An updated patch for i386/FreeBSD is posted at http://sourceware.org/ml/binutils/2007-10/msg00215.html *** Bug 5179 has been marked as a duplicate of this bug. *** Created attachment 2043 [details]
Link all sparc64 objects too
We need this for FreeBSD/Sparc64 as well. Thanks!
A new patch is posted at http://sourceware.org/ml/binutils/2007-10/msg00240.html The current patch is at http://sourceware.org/ml/binutils/2007-10/msg00257.html We missed a case of linking Linux .o against FreeBSD .so:
[hjl@gnu-6 weak-11]$ cat foo.c
extern void xxxx () __attribute__((weak));
void _start(void)
{
if (&xxxx != 0)
xxxx ();
}
[hjl@gnu-6 weak-11]$ cat bar.c
void
__attribute__((weak))
xxxx ()
{
}
[hjl@gnu-6 weak-11]$ make
gcc -O2 -fno-asynchronous-unwind-tables -c -o foo.o foo.c
gcc -O2 -fno-asynchronous-unwind-tables -fPIC -c -o bar.o bar.c
./ld -shared -o libbar.so bar.o
./ld -o foo foo.o libbar.so
readelf -s foo | grep xxxx
1: 00000000004002a0 2 FUNC GLOBAL DEFAULT UND xxxx
15: 00000000004002a0 2 FUNC GLOBAL DEFAULT UND xxxx
[hjl@gnu-6 weak-11]$ ./ld -V
GNU ld (GNU Binutils) 2.18.50.20080715
Supported emulations:
elf_x86_64_fbsd
elf_i386_fbsd
elf_x86_64
elf_i386
[hjl@gnu-6 weak-11]$
It should be
readelf -s foo | grep xxxx
1: 00000000004002a0 2 FUNC WEAK DEFAULT UND xxxx
15: 00000000004002a0 2 FUNC WEAK DEFAULT UND xxxx
A new patch is posted at http://sourceware.org/ml/binutils/2008-07/msg00207.html Patch was applied |
elf_link_add_object_symbols has if (! dynamic && is_elf_hash_table (htab) && htab->root.creator == abfd->xvec && bed->check_relocs != NULL) When you link Linux object files on FreeBSD, htab->root.creator != abfd->xvec. As the result, linker will fail later. We need a better way to check if input format is compatible with output format.