[Bug ld/21464] relocation truncated to fit: R_OR1K_GOT16 on OpenRISC, when linking libQtGui.so.4.8.7

[shorne at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=21464

--- Comment #18 from Stafford Horne <shorne at sourceware dot org> ---
I confirm, when building with libgeos as you described I also see the familiar
R_OR1K_GOT16 truncation issue.

I did some investigation, some points

  - In an earlier comment I mentioned the runtime PLT overflow, this is not
related to this R_OR1K_GOT16 relocation, sorry my mistake.  When creating the
PLT in or1k_elf_finish_dynamic_symbol the plt_reloc address may have a 16-bit
overflow in the l.ori instruction which is not checked. Similar but a different
issue.  Thats a different bug that I should raise.

  - This issue is an overflow in the 16-bit immediate in the l.lwz load
instruction generated for R_OR1K_GOT16 by GCC.  So the fix has to start with
GCC.  I will need to have a bit further look on how to handle this.

For the record some of the errors Errors:

linux-uclibc/9.3.0/crtbeginS.o: in function `__do_global_dtors_aux':
crtstuff.c:(.text+0x118): relocation truncated to fit: R_OR1K_GOT16 against
symbol `__cxa_finalize' defined in .text section in 
/home/shorne/work/openrisc/3eb9f9d0f6d8274b2d19753c006bd83f7d536e3c/output/host/or1k-buildroot-linux-uclibc/sysroot/lib/libc.so.
1
crtstuff.c:(.text+0x140): relocation truncated to fit: R_OR1K_GOT16 against
symbol `__deregister_frame_info@@GLIBC_2.0' defined 
in .text section in
/home/shorne/work/openrisc/3eb9f9d0f6d8274b2d19753c006bd83f7d536e3c/output/host/opt/ext-toolchain/bin/../lib
/gcc/or1k-buildroot-linux-uclibc/9.3.0/../../../../or1k-buildroot-linux-uclibc/lib/libgcc_s.so
/home/shorne/work/openrisc/3eb9f9d0f6d8274b2d19753c006bd83f7d536e3c/output/host/opt/ext-toolchain/bin/../lib/gcc/or1k-buildroot-
linux-uclibc/9.3.0/crtbeginS.o: in function `frame_dummy':
crtstuff.c:(.text+0x1a0): relocation truncated to fit: R_OR1K_GOT16 against
symbol `__register_frame_info@@GLIBC_2.0' defined in
 .text section in
/home/shorne/work/openrisc/3eb9f9d0f6d8274b2d19753c006bd83f7d536e3c/output/host/opt/ext-toolchain/bin/../lib/g
cc/or1k-buildroot-linux-uclibc/9.3.0/../../../../or1k-buildroot-linux-uclibc/lib/libgcc_s.so
CMakeFiles/geos.dir/src/algorithm/BoundaryNodeRule.cpp.o: in function
`geos::algorithm::BoundaryNodeRule::~BoundaryNodeRule()':
BoundaryNodeRule.cpp:(.text._ZN4geos9algorithm16BoundaryNodeRuleD2Ev[_ZN4geos9algorithm16BoundaryNodeRuleD5Ev]+0x24):
relocation
 truncated to fit: R_OR1K_GOT16 against symbol `vtable for
geos::algorithm::BoundaryNodeRule' defined in .data.rel.ro._ZTVN4geos
9algorithm16BoundaryNodeRuleE[_ZTVN4geos9algorithm16BoundaryNodeRuleE] section
in CMakeFiles/geos.dir/src/algorithm/BoundaryNode
Rule.cpp.o
CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o: in function
`geos::algorithm::CGAlgorithmsDD::orientationIndex(double, d
ouble, double, double, double, double)':
CGAlgorithmsDD.cpp:(.text+0x308): relocation truncated to fit: R_OR1K_GOT16
against symbol `geos::util::IllegalArgumentException
::~IllegalArgumentException()' defined in
.text._ZN4geos4util24IllegalArgumentExceptionD2Ev[_ZN4geos4util24IllegalArgumentExcept
ionD5Ev] section in CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o
CGAlgorithmsDD.cpp:(.text+0x310): relocation truncated to fit: R_OR1K_GOT16
against symbol `typeinfo for geos::util::IllegalArgu
mentException' defined in
.data.rel.ro._ZTIN4geos4util24IllegalArgumentExceptionE[_ZTIN4geos4util24IllegalArgumentExceptionE]
se
ction in CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o
CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o: in function
`geos::algorithm::CGAlgorithmsDD::signOfDet2x2(double, doubl
e, double, double)':
CGAlgorithmsDD.cpp:(.text+0xa34): relocation truncated to fit: R_OR1K_GOT16
against symbol `geos::util::IllegalArgumentException
::~IllegalArgumentException()' defined in
.text._ZN4geos4util24IllegalArgumentExceptionD2Ev[_ZN4geos4util24IllegalArgumentExcept
ionD5Ev] section in CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o
CGAlgorithmsDD.cpp:(.text+0xa3c): relocation truncated to fit: R_OR1K_GOT16
against symbol `typeinfo for geos::util::IllegalArgu
mentException' defined in
.data.rel.ro._ZTIN4geos4util24IllegalArgumentExceptionE[_ZTIN4geos4util24IllegalArgumentExceptionE]
se
ction in CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o
CMakeFiles/geos.dir/src/algorithm/CGAlgorithmsDD.cpp.o: in function
`geos::util::GEOSException::GEOSException(std::__cxx11::basi
c_string<char, std::char_traits<char>, std::allocator<char> > const&,
std::__cxx11::basic_string<char, std::char_traits<char>, s
td::allocator<char> > const&)':
CGAlgorithmsDD.cpp:(.text._ZN4geos4util13GEOSExceptionC2ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES9_[_ZN4geos4util
13GEOSExceptionC5ERKNSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEES9_]+0xc0):
additional relocation overflows omitted from
 the output
collect2: error: ld returned 1 exit status
make[4]: *** [CMakeFiles/geos.dir/build.make:5369: lib/libgeos.so.3.9.0] Error
1
make[3]: *** [CMakeFiles/Makefile2:359: CMakeFiles/geos.dir/all] Error 2
make[2]: *** [Makefile:172: all] Error 2
make[1]: *** [package/pkg-generic.mk:250:
/home/shorne/work/openrisc/3eb9f9d0f6d8274b2d19753c006bd83f7d536e3c/output/build/libge
os-3.9.0/.stamp_built] Error 2
make: *** [Makefile:23: _all] Error 2

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