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POHow to configure a library so it runs in the Xcode iOS Simulator?
 

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  1. POHow to configure a library so it runs in the Xcode iOS Simulator?
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    <p>I've got an iPhone app that runs on the device. Now I need to run it in the Simulator.</p> <p>It uses an open source project (<a href="http://site.icu-project.org/" rel="nofollow noreferrer">http://site.icu-project.org/</a>), which I build from the command line to create arm-compatible <code>.a</code> files. I can link these with my iPhone project, and it runs on the device.</p> <p>If I switch the target to Simulator, the build fails, as I expected:</p> <blockquote> <p>ld: warning: in libicudata.a, file was built for unsupported file format which is not the architecture being linked (i386)</p> </blockquote> <p>But if I use libs compiled for local use (x86_64), I get the <em>same error</em>, which has got be baffled. Do I have to specify a third architecture for the Simulator? Which one? How do I set the configuration?</p> <p>For reference, this is how I configured the icu project for the two different targets: <a href="https://stackoverflow.com/questions/8126233">How to build ICU so I can use it in an iPhone app?</a></p> <p><strong>Edited to add:</strong></p> <p>As Guillaume suggested (and <a href="https://stackoverflow.com/questions/1678381">Connect iPhone App to PostgreSQL Using Libpq</a> confirmed), I now see that the emulator needs a 32-bit build. So that's the last part: <em>how do I set the configuration</em>?</p> <p>The library has a standard <code>configure</code> script, as far as I know, but I'm still pretty new at this.</p> <p><strong>Edited to add:</strong></p> <p>I've gotten this far, but the references to i686 are obviously wrong.</p> <p>I don't know if i386 is considered a cross-compile, if it is I need "host" and "target" options, too.</p> <pre><code>ICU_PATH=/Users/eric.grunin/Documents/dev/icu2 DEVROOT=/Developer/Platforms/iPhoneSimulator.platform/Developer SDKROOT=$DEVROOT/SDKs/iPhoneSimulator4.3.sdk SYSROOT=$SDKROOT ICU_FLAGS="-I$ICU_PATH/source/common/ -I$ICU_PATH/source/tools/tzcode/ " export CXXPP= export CXXPPFLAGS= export CPPFLAGS="-I$SDKROOT/usr/lib/gcc/i686-apple-darwin10/4.2.1/include/ -I$SDKROOT/usr/llvm-gcc-4.2/lib/gcc/i686-apple-darwin10/4.2.1/include/ -I$SDKROOT/usr/include/ -I$SDKROOT/usr/include/c++/4.2.1/armv7-apple-darwin10/ -I./include/ -miphoneos-version-min=2.2 $ICU_FLAGS" export CFLAGS="$CPPFLAGS -pipe -no-cpp-precomp -isysroot $SDKROOT" export CPP="$DEVROOT/usr/bin/cpp $CPPFLAGS" export CXXFLAGS="$CFLAGS" export CC="$DEVROOT/usr/llvm-gcc-4.2/bin/i686-apple-darwin10-llvm-gcc-4.2" export CXX="$DEVROOT/usr/llvm-gcc-4.2/bin/i686-apple-darwin10-llvm-g++-4.2" export LDFLAGS="-L$SDKROOT/usr/lib/ -isysroot $SDKROOT -Wl,-dead_strip -miphoneos-version-min=2.0" cd $ICU_PATH mkdir simbuild cd simbuild $ICU_PATH/source/configure --enable-static --disable-shared gnumake </code></pre>
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