iostream et STL

[Excale]

Yes, I tried to compile your latest version without success.
J'avoue ne pas y connaître grand chose en C++, et je ne vois vraiment pas (entre autres) comment faire marcher <pair> (puisque je ne vois aucun fichier nommé "pair" à inclure sans ustl (il y a bien un upair.h, mais je ne suis allé nulle part avec ça)).

[Adriweb]

Maybe with using namespace ustl in files where it's used, but... I believe it's considered "bad" practice for portability reasons, so... not sure

[parisse]

Sorry for the delay, I did not look at the forum since a while because things seemed stalled.
It's not bad practice, as long as you do it in your implementation files and not in headers.
For the giac nspire port, I added a define in config.h so that std is the same as ustl. All implementation files of giac begin with using namespace std; hence ustl namespace should be exported.
If you have a problem compiling giac for nspire, can you report the precise error message?
Or did you try to compile your own program using giac?

[Excale]

I started the whole process again:
-DL giac ==> extract src/ to %ndlessprogs%/giac/
-Clean giac
-Build giac ==> tommath.h missing
-DL libtommath ==> extract to %ndlessprogs%/giac/libtommath/
-Clean libtommath
-Build libtommath ==> OK, put libtommath.a in %home%/.ndless/lib and tommath.h, tommath_class.h, tommath_superclass.h in %home%/.ndless/include
-Build giac ==>

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     gmp_replacements.h: In function 'double mpz_get_d(const mpz_t&)':
   gmp_replacements.h:130:20: error: 'Strtod' was not declared in this scope

• That's some non standard nspireio

-DL nspireIO ==> extract it to %ndlessprogs%/giac/nspireIO/
-Build nspireIO ==> OK, rename libnspireio.a to libnspireiogiac.a (to make sure it does not conflict with the "regular" one), change lnspireio to lnspireiogiac in giac makefile, put libnspireiogiac.a in %home%/.ndless/lib
-DL .ndless ==> extract nspireio/ in %home%/.ndless/include/nspireio/
-Build giac ==>

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  monomial.h:30:16: fatal error: pair: No such file or directory

-DL ustl ==> extract it to %ndlessprogs%/giac/ustl/
-Clean ustl
-Build ustl ==>

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  In file included from .../ndless-sdk/yagarto/lib/gcc/../../arm-none-eabi/sys-include/sys/_default_fcntl.h:180:0,
                 from .../ndless-sdk/yagarto/lib/gcc/../../arm-none-eabi/sys-include/sys/fcntl.h:3,
                 from .../ndless-sdk/yagarto/lib/gcc/../../arm-none-eabi/sys-include/fcntl.h:1,
                 from fstream.cc:9:
.../ndless-sdk/yagarto/lib/gcc/../../arm-none-eabi/sys-include/sys/stat.h: At global scope:
.../ndless-sdk/yagarto/lib/gcc/../../arm-none-eabi/sys-include/sys/stat.h:25:8: error: redefinition of 'struct stat'
.../Ndless-SDK/ndless/bin/../include/common.h:335:8: error: previous definition of 'struct stat'

-I'm stuck

[parisse]

Seems to be an incompatibility between the toolchain includes and common.h in the SDK. Try to comment line 180 (#include<sys/stat.h>) in ndless-sdk/yagarto/lib/gcc/../../arm-none-eabi/sys-include/sys/_default_fcntl.h
Or copy the compiled ustl library from .o/libustl.a that is in the archive to your .ndless/lib, and the headers *.h to .ndless/include (we don't really care about the ustl once it works, there is no reason to modify it).

[Excale]

I commented out all of theses conflicts. The linking part fails.

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Linking libustl.so.1.6 ...
ld (ld-elf2flt): -shared used without passing a shared library ID
collect2: ld returned 1 exit status
ln: creating symbolic link `libustl.so' to `libustl.so.1.6': No such file or directory

Anyway, I put your libustl.a in %home%/.ndless/lib, all the associated .h and .nothing (from the .ndless you uploaded) in %home%/.ndless/include.

-Build giac:

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  misc.cc: In function 'giac::gen giac::_pmin(const giac::gen&, const giac::context*)':
misc.cc:1183:68: error: 'dynamic_cast' not permitted with -fno-rtti

[parisse]

You can remove -fno-rtti in your nspire-g++ script (I don't see any valid reason to remove support for run-time type identification). If you don't want to change that script, you can add -DNO_RTTI to the options when compiling giac.

[Excale]

I thought it was already in the Makefile, but you put a # just before (I did not see it ).

Anyway, removed the #.
Build again. Same error but further (??).

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quater.cc: In constructor 'giac::quaternion::quaternion(const giac::gen&)':
quater.cc:68:73: error: 'dynamic_cast' not permitted with -fno-rtti

[parisse]

Remove quater.o from the Makefile.

[Excale]

OK.

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input_lexer.o: In function `builtin_lexer_functions_':
%ndlessprogs%\giac/static_lexer_at.h:201: undefined reference to `giac::at_galois_field'
collect2: ld returned 1 exit status

EDIT: I can't find "galois" in static_lexer_at.h nor input_lexer.cc