This is a followup to a previous question on cross-compiling for the iPhone:
http://stackoverflow.com/questions/1602182/cross-compile-autotools-based-libraries-for-official-iphone-sdk
Basically, I am trying to compile the Apache Portable Runtime (APR) version 1.3.8 (latest) for the iPhone. I am currently running into the following error during the configuration step:
checking for working PROCESS_SHARED locks... configure: error: in `/Users/michaelsafyan/Downloads/apr-1.3.8': configure: error: cannot run test program while cross compiling See `config.log' for more details.
I am invoking the "configure" script via "iphone3.1-configure --disable-dso --enable-threads", where "iphone3.1-configure" is the following script that I've cooked-up to invoke the "configure" script:
#! /bin/bash # # Program : iphone3.1-configure # Authors : Michael Aaron Safyan ([email protected]) # Synopsis : # This program runs the "configure" script generated by the # GNU Autotools in order to cross-compile thirdparty libraries # for the iPhone 3.1 SDK. Run this script while in a directory # containing an autotools "configure" script. Once you run this, # you can use "make" and "sudo make install" to build the library. # An install prefix of "/opt/iphone-3.1/" is used. # unset CPATH unset C_INCLUDE_PATH unset CPLUS_INCLUDE_PATH unset OBJC_INCLUDE_PATH unset LIBS unset DYLD_FALLBACK_LIBRARY_PATH unset DYLD_FALLBACK_FRAMEWORK_PATH export BUILD_DARWIN_VER=`uname -r` export SDKVER="3.1" export DEVROOT="/Developer/Platforms/iPhoneOS.platform/Developer" export SDKROOT="$DEVROOT/SDKs/iPhoneOS$SDKVER.sdk" export PKG_CONFIG_PATH=/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS$SDKVER.sdk/usr/lib/pkgconfig:/Developer/Platforms/iPhoneOS.platform/Developer/usr/lib/pkgconfig:/opt/iphone-$SDKVER/lib/pkgconfig:/usr/local/iphone-$SDKVER/lib/pkgconfig export PREFIX="/opt/iphone-$SDKVER" export AS="$DEVROOT/usr/bin/as" export ASCPP="$DEVROOT/usr/bin/as" export AR="$DEVROOT/usr/bin/ar" export RANLIB="$DEVROOT/usr/bin/ranlib" export CPPFLAGS="-pipe -no-cpp-precomp -I$SDKROOT/usr/lib/gcc/arm-apple-darwin9/4.2.1/include/ -I$SDKROOT/usr/include -I$DEVROOT/usr/include -I/opt/iphone-$SDKVER/include -I/usr/local/iphone-$SDKVER/include" export CFLAGS="-std=c99 -arch armv6 -pipe -no-cpp-precomp --sysroot='$SDKROOT' -isystem $SDKROOT/usr/lib/gcc/arm-apple-darwin9/4.2.1/include/ -isystem $SDKROOT/usr/include -isystem $DEVROOT/usr/include -isystem /opt/iphone-$SDKVER/include -isystem /usr/local/iphone-$SDKVER/include" export CXXFLAGS="-std=c99 -arch armv6 -pipe -no-cpp-precomp --sysroot='$SDKROOT' -isystem $SDKROOT/usr/lib/gcc/arm-apple-darwin9/4.2.1/include/ -isystem $SDKROOT/usr/include -isystem $DEVROOT/usr/include -isystem /opt/iphone-$SDKVER/include -isystem /usr/local/iphone-$SDKVER/include" export LDFLAGS="-arch armv6 --sysroot='$SDKROOT' -L$SDKROOT/usr/lib -L$DEVROOT/usr/lib -L/opt/iphone-$SDKVER/lib -L/usr/local/iphone-$SDKVER/lib" export CPP="$DEVROOT/usr/bin/cpp" export CXXCPP="$DEVROOT/usr/bin/cpp" export CC="$DEVROOT/usr/bin/gcc-4.2" export CXX="$DEVROOT/usr/bin/g++-4.2" export LD="$DEVROOT/usr/bin/ld" export STRIP="$DEVROOT/usr/bin/strip" if [ ! \( -d "$DEVROOT" \) ] ; then echo "The iPhone SDK could not be found. Folder \"$DEVROOT\" does not exist." exit 1 fi if [ ! \( -d "$SDKROOT" \) ] ; then echo "The iPhone SDK could not be found. Folder \"$SDKROOT\" does not exist." exit 1 fi ./configure --prefix="$PREFIX" --build="i386-apple-darwin$BUILD_DARWIN_VER" --host="arm-apple-darwin9" --enable-static --disable-shared ac_cv_file__dev_zero=no ac_cv_func_setpgrp_void=yes $@
The error that configure is giving me is not the first time I have received a message along the lines of "cannot run test program while cross compiling". In fact, the "ac_cv_file__dev_zero=no" and "ac_cv_func_setpgrp_void=yes" elements in the "iphone3.1-configure" script cause two similarly failing tests to be bypassed. The problem I am having is that I do not know how to bypass this check -- that is, I don't know what variable(s) to set to bypass this test and any additional tests that try to run executables built for the target platform. I was able to bypass the earlier two similar tests simply because I was able to locate the workaround on Google... does anyone know what variables to set or another way to bypass this check?
If anyone knows a way to suppress all tests that cannot be executed when cross-compiling, or if you just know how to suppress this specific check, I would be greatly appreciative. Thank you very much.