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179 :: linking to .so instead of default dl_ calls benefits

• exhu (orginal) [2013-07-08T21:20:56+02:00] view original

  I've added optional pkg-config support to x11 and cairo bindings (using -d:pkc_cairo, -d:pkc_xlib) in my branch so that you can link program in a traditional way under unix. I want to share some memory results here

  The default "dylib" pragma-enabled wrappers linked with my program produce a 216 kb hello world, while pkg-config and direct so libs (only importc, cdecl pragmas) produce 168K in debug mode, while the same 28K size for -d:release. Startup time differs by 0.001 s (dylib version being slower).

  I wonder if it'll reduce size and loading time of Aporia binary as a serious app.

  Is it ok If i make a convention on default "define" like "-d:use_pkg_config" for all wrappers? Without -d:use_pkg_config all wrappers work as before (dylib pragma).

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• Araq (orginal) [2013-07-09T09:45:47+02:00] view original

  -d:use_pkg_config is fine. However, there is also a --dynlibOverride switch that accomplishes the same.

  Is the startup time difference of 1ms reproducible? I don't believe it's statistically significant. ;-)

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• exhu (orginal) [2013-07-09T20:02:29+02:00] view original

  I've tested a simple 64-bit x11 app on linux, there's no noticeable difference in memory consumption between dylib and "static" versions. The only real benefits so far are:

  • ldd command enumerates the libraries that the program depends on
  • on macosx where macports are installed into /opt/local/lib/ and are not in dylib linker path by default and the app fails to load any library, using pkg-config solves the problem
  • mixing with C code when you want to access a library both from nimrod and c.
  • pkg-config is necessary for static linkage with libraries like allegro which depends on libpng, zlib, freetype and so on and so forth.

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• exhu (orginal) [2013-07-09T20:08:21+02:00] view original

  maybe i'm wrong with all this stuff, if someone wants to link against static libraries then --static option is needed for pkg-config and this complicates the things.

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• exhu (orginal) [2013-07-10T09:26:07+02:00] view original

  introduced use_pkg_config, use_pkg_config_static conditionals, linked hello world statically, got a 5,4 mb binary -)

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