On Friday 13 June 2008 04:06:18 Alexander Neundorf wrote: > > And the above are not really a big problem - > > "checking if something builds" is no problem, this just works. Running > something is a problem, as in "it doesn't just work" (...because you cannot > run it). Noticing 2 weeks after deployment that signal handling in the mips version of perl is using the x86 signal numbers and they're not the same: priceless. > > The only simple solution so far (without diving into the implementation > > and searching for root causes) were AFAICS: > > - do not use libtool for linking (as the link line as such without > > libtool works as expected) > > Yes, libtool sucks, it's the wrong solution to the problem. > (and CMake doesn't use it). Nothing on Linux really _uses_ libtool. It's supposed to act as a NOP wrapper around the linker on any Linux target. (It's there for things like Sparc and HPUX). The fact that libtool manages to do its nothing _wrong_ so often would be hilarious if it wasn't such a pain. Just uninstall libtool before trying to build for a Linux target, this should never cause any problems and will save you lots of headaches. > > Why on earth does someone need this explicitly during the build? > > If you have portable software, all of that should be hidden in the code > > and use "sizeof(int)". According to the LP64 standard which pretty much all modern Unixes adhere to (including both Linux and MacOS X) sizeof(int) is always 4. Guaranteed. The LP64 standard: http://www.unix.org/whitepapers/64bit.html The LP64 rationale: http://www.unix.org/version2/whatsnew/lp64_wp.html The insane legacy reasons windows doesn't do this, but in fact sizeof(int) will still be 4 there anyway: http://blogs.msdn.com/oldnewthing/archive/2005/01/31/363790.aspx Just FYI. :) > But this was not the point. My point was: testing something by running an > executable can be _a lot_ easier than testing the same without running > something. I think building natively under qemu is the easy way, yes. :) > Alex > -- > To unsubscribe from this list: send the line "unsubscribe linux-embedded" > in the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- "One of my most productive days was throwing away 1000 lines of code." - Ken Thompson. -- To unsubscribe from this list: send the line "unsubscribe linux-embedded" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
