Newlib

Discussing libraries simplifying applications development
  • SoUrcerer
    Posts 2810
    Joined: Mon Sep 24, 2007 11:11 am

    esevece wrote:I don't understand how to use the newlib.
    I tried translating this thread to spanish and english but it's not accurate.

    I'll be grateful if someone can explain me in english what I have to do to use the newlib.
    Prepare 32 bit gcc which able to generate PE output; then download a-libs, ld-scripts and "include" headers. Then use "nostdinc", custom ld script and newlib a-files to generate static binaries.
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    Thank you Wildwest and SoUrcerer.

    SoUrcerer: I will try to follow your guide.
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    I'm compiling GCC and BINUTILS following this guide http://wiki.osdev.org/GCC_Cross-Compiler.
    Is right to use 'i586-mingw32' as --target?
  • SoUrcerer
    Posts 2810
    Joined: Mon Sep 24, 2007 11:11 am

    If you on linux, you can just install mingw32 package. Also, there's port of binutils for Kolibri on SVN
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    Ok. Thank you.
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    Do you mean that I don't have to compile GCC?
    I've compiled binutils with the patch from the SVN and installed mingw32-gcc. But when I run `make` in 'newlib/' I get:

    Code: Select all

    gcc -c -O2 -fomit-frame-pointer -DBUILD_DLL -D_IEEE_LIBM -I ./include -o crt/crtdll.o crt/crtdll.c
In file included from crt/crtdll.c:10:0:
./include/sys/kos_io.h:69:16: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘unpack’
 void __stdcall unpack(void* packed_data, void* unpacked_data);
                ^
make: *** [crt/crtdll.o] Error 1
  • SoUrcerer
    Posts 2810
    Joined: Mon Sep 24, 2007 11:11 am

    I suppose if you use binutils with i586-kos32 target, then you have to port gcc too. Otherwise you need to use i586-mingw32-gcc as compiler; check lua compile.sh/link.sh scripts: download/file.php?id=3748
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    Ok, now I understand. Thank you SoUrcerer.
    I will use that scripts as reference.
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    I modified the 'Makefile' in 'newlib/' to use mingw32.
    Now I have i486-mingw32-gcc, i486-mingw32-ld, etc. But I get an error because i486-mingw32-ld doesn't find 'libc.ver'.

    Code: Select all

    i486-mingw32-ld: cannot open linker script file libc.ver: No existe el fichero o el directorio (in english: the file or directory not exist)
  • Serge Kernel Developer
    Posts 3952
    Joined: Wed Mar 08, 2006 6:25 pm

    esevece
    fixed
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    Thank you Serge.
    I got an error about "-lgcc". So, after search I found the solution adding "-L/usr/lib/gcc/i486-mingw32/4.7.2" to the line that uses "-lgcc".

    Now I have newlib built. I will try to use newlib and if works I will create an article in the wiki.

    Thanks guys.
  • Serge Kernel Developer
    Posts 3952
    Joined: Wed Mar 08, 2006 6:25 pm

    Есть вопрос.
    Надо ли включать в SDK исходные коды пакетов (freetype ffmpeg cairo libpng, zlib etc) ?
  • stefano
    Posts 166
    Joined: Tue Feb 12, 2013 9:48 pm

    That question was to me?
  • punk_joker
    Posts 1284
    Joined: Tue Apr 12, 2011 11:19 pm

    esevece, no.
    to infinity and beyond
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