Re: arm-elf cross compiler on cygwin - again

[andy at softbookpress dot com]

>> After a brief moment of happiness, the world  fell apart again :-))
>
>:-(
>
>> In function `operator new[](unsigned long)':
>> ../../../../gcc-3.0/libstdc++-v3/libsupc++/new_opv.cc:35: undefined
>> reference to `LLSDA1'
>
>> Can someone explain what's going on here ??
>
>Yep, the exception handling code in the C++ libraries is stuffed.  The
>full story is complex, but basically, the dwarf2 exception handling model
>was changed fairly late in the release process and the ARM back-end didn't
>catch up.  As a result, it fell back to using setjmp/longjmp unwinding,
>and the tables in this format trip a bug in the compiler when used with
>dwarf2 debug format (the default for the arm-elf back-end).
>
>I filed a PR about this earlier this week, but I'm hoping that 3.0.1 will
>revert back to having proper dwarf2 based unwinders by default.

>R

Aaargh!!
How does this affect the code size ?

In the meantime I found some instructions at
http://sources.redhat.com/ecos/tools/win-arm-elf.html
and rebuilt everything from scratch.
However the instructions there don't tell you that, in order to actually
build anything with your cross-compiler you need to build newlib..
I got the latest version (1.9.0) and built it
After that I was able to successfully compile and link a simple C app.
So far so good.
But I need c++ and stl
$cd build-gcc3;make all  install --
configures libiberty and libstdc++-v3, builds and installs it - no problems:
Now, build a simple c++ app:

#include <string>
void main()
{
	unsigned long* foo = new unsigned long[20];
	try{
	std::string s("hello");
	}
	catch(...){}
}

$arm-elf-gcc -v test.cpp -- a bunch of link errors - see below
Is there anything I can do to make it work ??
Thanks
Andy
PS
One thing that got me suspicious was that during configuration of
libstdc++-v3 it said
"Checking for Cygwin environment -- no
Checking for mingw environment -- no"
whereas when gcc config script ran it did say "yes" on Cygwin environment
-- For what it's worth

Here's the link errors I get building the simple code above:
************
$arm-elf-gcc -v test.cpp
Reading specs from /tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/specs
Configured with: ../gcc-3.0/configure --target=arm-elf --prefix=/tools3
--exec-prefix=/tools3/H-i686-pc-cygwin --with-gnu-as --with-gnu-ld
--with-new-lib --enable-languages=c,c++
Thread model: single
gcc version 3.0
 /tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/cc1plus.exe -v
-D__GNUC__=3 -D__GNUC_MINOR__=0 -D__GNUC_PATCHLEVEL__=0 -Acpu=arm
-Amachine=arm -D__CHAR_UNSIGNED__ -D__NO_INLINE__ -D__STDC_HOSTED__=1
-D__ARM_ARCH_4T__ -D__APCS_32__ -D__ARMEL__ -D__ELF__ -D__arm__ test.cpp
-D__GNUG__=3 -D__GXX_DEPRECATED -D__EXCEPTIONS -D__GXX_ABI_VERSION=100
-quiet -dumpbase test.cpp -version -o /cygdrive/c/TEMP/ccIpfpOE.s
GNU CPP version 3.0 (cpplib) (ARM/ELF non-Linux)
GNU C++ version 3.0 (arm-elf)
	compiled by GNU C version 2.95.3-5 (cygwin special).
ignoring nonexistent directory "/tools3/H-i686-pc-cygwin/arm-elf/sys-include"
#include "..." search starts here:
#include <...> search starts here:
 /tools3/include/g++-v3
 /tools3/include/g++-v3/arm-elf
 /tools3/include/g++-v3/backward
 /tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/include
 /tools3/H-i686-pc-cygwin/arm-elf/include
End of search list.
 /tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/../../../../arm-elf/bin/as.exe
-o /cygdrive/c/TEMP/ccevlBEc.o /cygdrive/c/TEMP/ccIpfpOE.s
 /tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/collect2.exe -X
/tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/crtbegin.o
/tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/../../../../arm-elf/lib/crt0.o
-L/tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0
-L/tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/../../../../arm-elf/lib
/cygdrive/c/TEMP/ccevlBEc.o -lgcc -lc -lgcc
/tools3/H-i686-pc-cygwin/lib/gcc-lib/arm-elf/3.0/crtend.o
/cygdrive/c/TEMP/ccevlBEc.o: In function `main':
/cygdrive/c/TEMP/ccevlBEc.o(.text+0x50): undefined reference to `operator
new[](unsigned long)'
/cygdrive/c/TEMP/ccevlBEc.o(.text+0xd0): undefined reference to
`__cxa_begin_catch'
/cygdrive/c/TEMP/ccevlBEc.o(.text+0xdc): undefined reference to
`__cxa_end_catch'
/cygdrive/c/TEMP/ccevlBEc.o(.text+0xf0): undefined reference to
`__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function `std::string::~string()':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSsD1Ev+0xec): undefined
reference to `__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function
`std::string::_Rep::_M_destroy(std::allocator<char> const&)':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs4_Rep10_M_destroyERKSaIcE+0xf4)
: undefined reference to `__cxa_call_unexpected'
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs4_Rep10_M_destroyERKSaIcE+0x104
): undefined reference to `__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function `char*
std::string::_S_construct<char const*>(char const*, char const*,
std::allocator<char> const&, std::forward_iterator_tag)':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs12_S_constructIPKcEEPcT_S3_RKSa
IcESt20forward_iterator_tag+0x178): undefined reference to
`__cxa_begin_catch'
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs12_S_constructIPKcEEPcT_S3_RKSa
IcESt20forward_iterator_tag+0x198): undefined reference to `__cxa_rethrow'
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs12_S_constructIPKcEEPcT_S3_RKSa
IcESt20forward_iterator_tag+0x1d8): undefined reference to `__cxa_end_catch'
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs12_S_constructIPKcEEPcT_S3_RKSa
IcESt20forward_iterator_tag+0x250): undefined reference to
`__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function `std::string::_Rep::_M_refcopy()':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs4_Rep10_M_refcopyEv+0xb0):
undefined reference to `__cxa_call_unexpected'
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs4_Rep10_M_refcopyEv+0xc4):
undefined reference to `__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function
`std::string::_Rep::_S_create(unsigned long, std::allocator<char> const&)':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs4_Rep9_S_createEmRKSaIcE+0x68):
undefined reference to `std::__throw_length_error(char const*)'
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSs4_Rep9_S_createEmRKSaIcE+0x140)
: undefined reference to `__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function
`std::__default_alloc_template<true, 0>::allocate(unsigned long)':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSt24__default_alloc_templateILb1E
Li0EE8allocateEm+0x17c): undefined reference to `__gxx_personality_sj0'
/cygdrive/c/TEMP/ccevlBEc.o: In function
`std::__malloc_alloc_template<0>::_S_oom_malloc(unsigned long)':
/cygdrive/c/TEMP/ccevlBEc.o(.gnu.linkonce.t._ZNSt23__malloc_alloc_templateILi0EE
13_S_oom_mallocEm+0x2c): undefined reference to `std::__throw_bad_alloc()'
collect2: ld returned 1 exit status






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