为官方 iPhone SDK 交叉编译基于 Autotools 的库

Question

背景

我正在编写一个针对多种不同手机（包括 iPhone）的程序。该程序依赖于几个第三方库。我在为 iPhone 和 iPhone 模拟器交叉编译这些第三方库时遇到困难。这些库包括 Apache Portable Runtime 和 GNUTLS 及其依赖项。我希望构建的库以前缀“/opt/iphone-3.1”、“/opt/iphone-3.0”、“/opt/iphone-2.2.1”、“/opt/iphone-simulator-3.1”结束”和“/opt/iphone-simulator-3.0”。

为了使交叉编译过程易于重复，我正在创建脚本来调用每个目标平台的“配置”脚本（“iphone3.1-configure”，“iphone3.0-configure”，“iphone2.2.1 -configure”、“iphonesim3.1-configure”和“iphonesim3.0-configure”）。这就是我遇到麻烦的地方。

我使用的是 Mac OS X 10.6 Snow Leopard 计算机以及官方 Xcode 3.2 + iPhone SDK 3.1。

状态

我目前有以下“iphone3.1-configure”脚本：

#! /bin/bash

#
# Program  : iphone3.1-configure
# Author   : Michael Aaron Safyan
# 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 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="-std=c99 -arch armv6 -pipe -no-cpp-precomp --sysroot='$SDKROOT' -isystem $SDKROOT/usr/include -isystem $DEVROOT/usr/include -isystem /opt/iphone-$SDKVER/include -isystem /usr/local/iphone-$SDKVER/include"
export CFLAGS="-std=c99 -arch armv6 -pipe -no-cpp-precomp --sysroot='$SDKROOT' -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/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="$DEVROOT/usr/bin/cpp-4.2"
export CC="$DEVROOT/usr/bin/gcc-4.2"
export CXX="$DEVROOT/usr/bin/g++-4.2"
export LD="$DEVROOT/usr/bin/ld"

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 $@

并且得到：

checking build system type... i386-apple-darwin10.0.0
checking host system type... arm-apple-darwin9
checking target system type... arm-apple-darwin9
Configuring APR library
Platform: arm-apple-darwin9
checking for working mkdir -p... yes
APR Version: 1.3.8
checking for chosen layout... apr
checking for arm-apple-darwin9-gcc... /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... yes
checking for suffix of executables... 
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 accepts -g... yes
checking for /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc-4.2 option to accept ISO C89... unsupported
Applying APR hints file rules for arm-apple-darwin9
  adding "-DDARWIN" to CPPFLAGS
  adding "-DSIGPROCMASK_SETS_THREAD_MASK" to CPPFLAGS
  setting apr_posixsem_is_global to "yes"
  setting ac_cv_func_kqueue to "no"
  setting ac_cv_func_poll to "no"
(Default will be unix)
checking whether make sets $(MAKE)... yes
checking how to run the C preprocessor... /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/cpp-4.2
configure: error: in `/Users/michaelsafyan/Downloads/apr-1.3.8':
configure: error: C preprocessor "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/cpp-4.2" fails sanity check
See `config.log' for more details.

在“apr-1.3.8”文件夹中，我正在运行“iphone3.1-configure --disable-dso” ， “config.log”是：

configure:7710: checking how to run the C preprocessor
configure:7828: result: /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/cpp-4.2
configure:7857: /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/cpp-4.2 -std=c99 -arch armv6 -pipe -no-cpp-precomp --sysroot='/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk' -isystem /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk/usr/include -isystem /Developer/Platforms/iPhoneOS.platform/Developer/usr/include -isystem /opt/iphone-3.1/include -isystem /usr/local/iphone-3.1/include -DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK conftest.c
cpp-4.2: error trying to exec 'cc1': execvp: No such file or directory
configure:7864: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #ifdef __STDC__
| # include 
| #else
| # include 
| #endif
|            Syntax error
configure:7857: /Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/cpp-4.2 -std=c99 -arch armv6 -pipe -no-cpp-precomp --sysroot='/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk' -isystem /Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS3.1.sdk/usr/include -isystem /Developer/Platforms/iPhoneOS.platform/Developer/usr/include -isystem /opt/iphone-3.1/include -isystem /usr/local/iphone-3.1/include -DDARWIN -DSIGPROCMASK_SETS_THREAD_MASK conftest.c
cpp-4.2: error trying to exec 'cc1': execvp: No such file or directory
configure:7864: $? = 1
configure: failed program was:
| /* confdefs.h.  */
| #define PACKAGE_NAME ""
| #define PACKAGE_TARNAME ""
| #define PACKAGE_VERSION ""
| #define PACKAGE_STRING ""
| #define PACKAGE_BUGREPORT ""
| /* end confdefs.h.  */
| #ifdef __STDC__
| # include 
| #else
| # include 
| #endif
|            Syntax error
configure:7926: error: in `/Users/michaelsafyan/Downloads/apr-1.3.8':
configure:7929: error: C preprocessor "/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/cpp-4.2" fails sanity check
See `config.log' for more details.

问题

如何修复“iphone3.1-configure”脚本？谢谢。

Answer 1

好的。这仍然无法构建，但它更进一步......

1. C 预处理器无法采用架构。
2. C 预处理器不接受 --sysroot 或 -isystem（仅使用“-I”）。
3. 使用“cpp”而不是“cpp-4.2”（4.2 版本有缺陷，而且由于它是预处理器，因此使用哪个版本并不重要，所以您最好使用有效的版本。

） iphone3.1-configure 脚本的更新版本是：

#! /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 $@

另外，我使用“--enable-threads --disable-dso”调用，而不仅仅是“--disable-dso”。这仍然不起作用...它失败了：

checking for PTHREAD_PROCESS_SHARED in pthread.h... yes
checking for pthread_mutexattr_setpshared... yes
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.

但是，这可能是 APR 的特定测试的问题。我在链接中发布了后续问题。

编辑

我在 为 iPhone 交叉编译 Apache Portable Runtime。

Answer 2

谢谢你的剧本。它确实对我有很大帮助。尽管我必须做一些更改，以便我构建的库的架构是 arm 而不是 i386。

首先，我必须更改编译器：

# export CC="$DEVROOT/usr/bin/gcc-4.2"
export CC="$DEVROOT/usr/bin/arm-apple-darwin10-gcc-4.2.1"

然后我从 CFLAGS、CXXFLAGS、LDFLAGS 中删除了 -arch armv6 选项，因为该编译器不理解它。

更新了 SDKVER和 gcc 版本并且它有效！