将Apache Portable Runtime交叉编译到iPhone

Cross-compile Autotools-based Libraries for Official iPhone SDK

基本上,我正在尝试为iPhone编译ApachePortableRuntime(APR)版本1.3.8(最新版本)。我当前在配置步骤中遇到以下错误:

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.

我通过“iphone3.1-configure--disable dso--enable threads”调用“configure”脚本,其中“iphone3.1-configure”是我为调用“configure”脚本而编写的以下脚本:

#! /bin/bash

#
# Program  : iphone3.1-configure
# Authors  : Michael Aaron Safyan (michaelsafyan@gmail.com)
# 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 $@

configure给我的错误不是我第一次收到类似“交叉编译时无法运行测试程序”的消息。事实上,“iphone3.1-configure”脚本中的“ac_cv_file_dev_zero=no”和“ac_cv_func_setpgrp_void=yes”元素会导致绕过两个类似的失败测试。我遇到的问题是,我不知道如何绕过此检查——也就是说,我不知道要设置什么变量来绕过此测试以及尝试运行为目标平台构建的可执行文件的任何其他测试。我之所以能够绕过前两个类似的测试,仅仅是因为我能够在谷歌上找到解决方案。。。有人知道要设置哪些变量或以其他方式绕过此检查吗?

如果有人知道如何抑制交叉编译时无法执行的所有测试,或者您知道如何抑制这种特定检查,我将不胜感激。非常感谢你。