交叉编译 iOS 字体配置

Question

如何交叉编译 fontconfig for iOS.
http://freedesktop.org/software/fontconfig/release

我试试这个：

./configure
CC="/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang"
CFLAGS="-isysroot /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk -arch armv7"
--sysconfdir=/Users/bluefish625/Desktop/fontconfig/sysconfdir/
--prefix=/Users/bluefish625/Desktop/fontconfig/prefix/
--mandir=/Users/bluefish625/Desktop/fontconfig/mandir
--disable-shared
--host=armv7-apple-darwin
--with-freetype-config=$PREFIX/bin/freetype-config

错误信息为：

configure: error: in `/Users/bluefish625/Downloads/fontconfig-2.9.0':
configure: error: The pkg-config script could not be found or is too old.
Make sure it is in your PATH or set the PKG_CONFIG environment variable to the full path to pkg-config.
Alternatively, you may set the environment variables LIBXML2_CFLAGS
and LIBXML2_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.
To get pkg-config, see <http://pkg-config.freedesktop.org/>.
See `config.log' for more details

而且，我不知道这个--with-freetype-config是什么意思？
有人可以帮助我吗？谢谢。

Answer 1

试试这个：

export IOS_PLATFORMDIR="/Developer/Platforms/iPhoneOS.platform"
export IOS_SYSROOT="$IOS_PLATFORMDIR/Developer/SDKs/iPhoneOS5.0.sdk"
export IOS_GCC="$IOS_PLATFORMDIR/Developer/usr/bin/arm-apple-darwin10-llvm-gcc-4.2"
export IOS_CFLAGS="-march=armv6 -mcpu=arm1176jzf-s -mfpu=vfp"
./configure --host arm-apple-darwin10 --disable-docs --enable-shared=no 
           --with-expat="/Users/meox/PODOFO/expat" 
           --with-expat-includes="/Users/meox/PODOFO/expat/include" 
           --with-expat-lib="/Users/meox/PODOFO/expat" 
CC="$IOS_GCC" LD="$IOS_GCC" 
CFLAGS="-mfloat-abi=softfp -isysroot $IOS_SYSROOT -O3 $IOS_CFLAGS" 
LDFLAGS="-mfloat-abi=softfp -isysroot $IOS_SYSROOT $IOS_CFLAGS
-L/Users/meox/PODOFO/freetype2 -L/Users/meox/PODOFO/expat
-L/Users/meox/PODOFO/zlib -L/Users/meox/PODOFO/libiconv
-L/Users/meox/PODOFO/bzip2" 
CPPFLAGS="-I/Users/meox/PODOFO/freetype2/include
-I/Users/meox/PODOFO/zlib/include -I/Users/meox/PODOFO/expat/include"

你必须设置正确的路径。