Différences

Ci-dessous, les différences entre deux révisions de la page.

--- lokigames:creatures3 [2026/06/22 07:02] – créée twolife
+++ lokigames:creatures3 [2026/06/23 07:20] (Version actuelle) – [Adventures in the dark age of broken toolchain - Part 2] twolife
@@ Ligne 3: / Ligne 3: @@
 Nothing exciting to say about installing the game & running it with the bundled SDL-1.2.
-But things get really nasty if you want to use you system libraries & sdl12-compat in particular...
+But things get really nasty if you want to use your system libraries & sdl12-compat in particular...
-===== Adventures in the dark age of broken toolchain - Part 1 =====
 <code>
 mkdir libs_backup
@@ Ligne 11: / Ligne 9: @@
 </code>
+===== Adventures in the dark age of broken toolchain - Part 1 =====
 <code>
 $ creatures3
@@ Ligne 18: / Ligne 17: @@
 ''lc2e'' is a very old ELF binary, and unfortunately it is very broken by modern standards:
-  * it contains explicit symbol-version requirements against ''libdl.so.2 '' (''readelf -V lc2e'')
+  * it contains explicit symbol-version requirements against ''libdl.so.2'' (''readelf -V lc2e'')
-  * but it doesn't declare a dependency on ''libdl.so.2 '' (''readelf -d lc2e'')
+  * but it doesn't declare a dependency on ''libdl.so.2'' (''readelf -d lc2e'')
 You can use patchelf to fix this:
@@ Ligne 26: / Ligne 25: @@
 But why does it work with the bundled ''libSDL-1.2.so.0'' ?
-Because that library has a dependency on libdl (and that make the loader happy), while any modern versions (be it a real SDL-1.2 or sdl12-compat) won't. Again: why ?
+Because the bundled ''libSDL-1.2.so.0'' has a dependency on libdl (and that makes the loader happy), while any modern versions (be it a real SDL-1.2 or sdl12-compat) won't have it. Again: why ?
-Because with the release of GLIBC 2.34 in 2021, libpthread, libdl, libutil, libanl have all been integrated into libc; new build does not link with them anymore.
+Because with the release of GLIBC 2.34 in 2021, libpthread, libdl, libutil, libanl have all been integrated into libc; new build does not link with any of them anymore.
@@ Ligne 38: / Ligne 37: @@
 </code>
-This is a fun one. ''lc2elib.so'' use some private symbols that are not part of SDL-1.2’s public ABI, that are exported by the bundled ''libSDL-1.2.so.0'', but that aren't exposed in any build of SDL-1.2 made in the last 2 decades.
+This is a fun one. ''lc2elib.so'' use some private symbols that are not part of SDL-1.2’s public ABI, that are surprisingly exported by the bundled ''libSDL-1.2.so.0'' ; but that aren't exposed in any other build of SDL-1.2 made in the last 2 decades.
+Here is the list of symbols we need to provide:
+<code>
+void SDL_Convert16LSB(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_Convert16MSB(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_Convert8(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_ConvertEndian(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_ConvertMono(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_ConvertSign(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_ConvertStereo(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_RateDIV2(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_RateMUL2(SDL_AudioCVT *cvt, Uint16 format)
+void SDL_RateSLOW(SDL_AudioCVT *cvt, Uint16 format)
+</code>
+The solution I choose is simple: reuse the code from SDL-1.2 in [[https://github.com/libsdl-org/SDL-1.2/blob/main/src/audio/SDL_audiocvt.c|src/audio/SDL_audiocvt.c]] and make it available to the game.
+===== Solution =====
+Just compile the code from [[https://github.com/twolife/creatures3-linux-sdl]] and replace ''libSDLStretch.so'' in the game directory.
+<code>
+SDL_VIDEODRIVER=x11 creatures3
+Welcome to Creatures 3!
+[...]
+</code>