Installing & using the NetSurf SDK Cross-compiling for ☑ Atari, ☑ Amiga, ☑ RISC-OS… ☐ NeXT ? NeXT ? François Revol RMLL 2018

References ●

NetSurf website –

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Developer documentation

RMLL 2014 talk “Free your antiques”

NetSurf’s own toolchains ●

Based on others’ work

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Primarily used for release & continuous integration

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NetSurf’s own buildsystem is a bit complex –

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Many git repos including a ‘buildsystem’ one

SDK itself is self-contained –

⚠ If inside the NetSurf build env :

export -n PREFIX

“Use the Source, Luke!” ●

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sudo ${pkgman} install ${deps} –

⚠ Debian also need automake1.11 for atari at least

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Debian deps mentioned, please send a patch for others 😸

sudo mkdir /opt/netsurf && sudo chmod 777 /opt/netsurf –

Default, can be overridden

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Must be writable by user (yeah, I know…)

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git clone git://git.netsurf-browser.org/toolchains.git

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cd toolchains

Patch PendingⓅ ●

Some platforms currently broken in master…

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Atari –

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Amiga –

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git checkout mmu_man/m68k-try-003 git checkout mmu_man/m68k-amiga-fix001

“Allons-y!” ●

t={arm-unknown-riscos,m68k-…} # set target

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p=/opt/netsurf/$t # prefix shortcut

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cd $t

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make # build the cross-compiler itself…

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cd ../sdk

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GCCSDK_INSTALL_CROSSBIN=$p/cross/bin GCCSDK_INSTALL_ENV=$p/env make

A little extra… ●

The SDK only builds NetSurf’s dependencies

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But we want libtiff, ncurses, SDL, SDL{image,ttf}…

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git checkout mmu_man/sdk-extra

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cd ../extra

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GCCSDK_INSTALL_CROSSBIN=/opt/… GCCSDK_INSTALL_ENV=/opt/… make

Ok, C is great, what about $lang ? ●

GCC itself supports more (C++,ObjC…)

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But runtime libs are usually not ported

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In theory –

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sed -i 's/enable-languages=c /enablelanguages=c,c++ /' *-*/Makefile

In practice, not working yet for atari

Hello, World! ●

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#include int main(void) { printf("Hello World\n"); return 0; } $ export PATH=/opt/netsurf/m68k-atari-mint/cross/bin":$PATH" $ m68k-atari-mint-gcc -o hello.prg hello.c $ file hello.prg hello.prg: Atari ST M68K contiguous executable…

Minimal setup ●

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export PATH=/opt/netsurf/m68k-atari-mint/cross/bin":$PATH" export PKG_CONFIG_LIBDIR=/opt/netsurf/m68k-atarimint/env/lib/pkgconfig If autotools –

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./configure --host=m68k-atari-mint

Else –

YMMV

Let’s try it!

QEmacs ●

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Little Emacs-like (no lisp) editor by Fabrice Bellard (QEMU, FFmpeg…) export PATH=/opt/netsurf/m68k-atarimint/cross/bin":$PATH"

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./configure --enable-atari

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make

Grafx2 ●

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Some patches yet to be upstreamed make ATARICROSS=1 prefix=/opt/netsurf/m68k-atari-mint/e nv CFLAGS='-DMAX_PATH=1024 DPATH_MAX=1024 -I/opt/netsurf/m68katari-mint/cross/m68k-atari-mint/incl ude' NOLUA=1

Powermanga ●

./configure --host=m68k-atari-mint

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… --disable-sound --disable-pngexport

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… --with-sdl-prefix=/opt/netsurf/m68k-atari-mint/env

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error: SDL/SDL.h: No such file or directory –

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Official way is 😒

display.h:68:5: error: expected identifier before numeric constant –

already defines K_INSERT

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#undef …

Tada \o/

Kinda works…

SchismTracker ●

util.c:143: undefined reference to `_log10f' –

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“Bad memory protection” –

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Force to use the double version -Wl,--msuper-memory

CFLAGS='-Dlog10f=log10 -Dpowf=pow' LDFLAGS='Wl,--msuper-memory' ./configure --host=m68katari-mint --with-sdl-prefix=/opt/netsurf/m68katari-mint/env

Wow, it fails fast!

Atari MiNT specifics ●

Fixup default stack size –

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-Wl,--stack,8k or $t-stack …

Set Supervisor flag (for SDL) –

-Wl,--msuper-memory or $t-flags …

AmigaOS specifics ●

TODO

RISC-OS specifics ●

TODO

Future? ●

LLVM? –

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At least 2 failed attempts : llvm68k & llvm-m68k

Thanks! ●

Please send patches upstream!