Runtime error/s with iOS

Question

I've followed the build instructions for iOS in your documentation but I get an error at runtime with the following output:
Detected an attempt to call a symbol in system libraries that is not present on the iPhone:
stat$INODE64 called from function __os_exists in image Berkeley.
An Apple forum member suggested that I'm not building BDB against the iPhone Simulator system libraries. I have a few questions:
In your build instructions for iOS you refer to an $SDKROOT variable. What should this be set to for Simulator and device builds respectively?
I found a SO post from someone who suggests that I'd need quite extensive modification of my build script to set environment variables not mentioned in your build instructions. You can see his build script in the second answer in the following link to SO:
objective c - How can I use the Berkeley DB within an iOS application? - Stack Overflow
If I make use of his script, I get an error that tells me gcc isn't working correctly. His post is quite old, so I'm really hoping you can elaborate on your existing guidance for iOS builds that will help me get BDB working at runtime. Just to note, following your build instructions does lead to a successful build of BDB but it fails at runtime.
Any help at all would be great, thanks.

Answer 1

Hi Ray,
Could you try building the BDB library using the following configuration:
export DEVROOT=/Applications/Xcode.app/Contents/Developer
export SDKROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk
export SIMROOT=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator7.1.sdk
export CC=$DEVROOT/usr/bin/gcc
export LD=$DEVROOT/usr/bin/ld
export CXX=$DEVROOT/usr/bin/g++
export LDFLAGS="-L$SDKROOT/usr/lib"
export CFLAGS="-arch i386 -pipe -no-cpp-precomp -isysroot $SDKROOT -mios-simulator-version-min=7.1"
export CXXFLAGS="-arch i386 -pipe -no-cpp-precomp -isysroot $SDKROOT -mios-simulator-version-min=7.1"
export CPPFLAGS="-arch i386 -pipe -no-cpp-precomp -isysroot $SDKROOT -mios-simulator-version-min=7.1"
../dist/configure --host=arm-apple-darwin9 --prefix=$SDKROOT \
  --enable-sql --enable-debug --enable-cxx --enable-sql_compat
With the BDB library built with this configuration, we couldn't reproduce the runtime error you mentioned in your original post on iOS simulator 7.1.